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TL594INSR - 40V 0.2A 300kHz PWM Controller | Texas Instruments
The Texas Instruments TL594INSR is a 40 V, 0.2 A, 300 kHz pulse-width-modulation (PWM) controller with integrated undervoltage lockout (UVLO), housed in a 16-pin Small-Outline (SOP/NS) package supplied on tape and reel. The device integrates a precision reference, two error amplifiers, an adjustable oscillator, a dead-time control comparator, and uncommitted output transistors capable of sinking or sourcing up to 200 mA each for driving power stages directly. What is a PWM controller? A PWM controller is a power-management integrated circuit that generates switching signals whose duty cycle is modulated to regulate voltage or current in switching power supplies. The TL594 belongs to the voltage-mode PWM controller category, which sits in the hierarchy of PWM controller -> switching controller -> DC-DC controller -> power management IC -> semiconductor. Voltage-mode controllers regulate by comparing an error-amplifier output to a sawtooth waveform, making them robust, well-understood, and tolerant of noisy measurement environments. The TL594INSR supports buck, boost, flyback, forward, full-bridge, half-bridge, and push-pull topologies, giving designers a single IC for multiple converter architectures. Key features include 5 V (±5%) internal reference output, programmable dead-time control (DTC), programmable oscillator frequency up to 300 kHz via external RT and CT, and uncommitted 200 mA open-collector outputs that can be configured in common-emitter or emitter-follower mode for either single-ended or push-pull operation. At the architecture level, the TL594 uses a bandgap-derived 5 V reference feeding two identical error amplifiers with uncommitted inputs and outputs, allowing flexible feedback loop design. The oscillator section generates a sawtooth whose rise time is set by RT-CT and whose maximum frequency is 300 kHz, with internal circuitry that prevents simultaneous conduction of the output stages during transitions (dead-time control). Protection features include UVLO with typical 6 V turn-on threshold and thermal considerations for the SOP-16 (NS) thermal pad. Typical applications include DC-DC converters in industrial power systems, SMPS for telecom and networking equipment, battery chargers using buck or boost topologies, and motor-drive forward converters. Designers favor the TL594 for its topology flexibility and proven architecture in long-lifecycle designs. When designing with this part, ensure RT and CT values are selected to keep oscillator frequency below 300 kHz under all temperature and tolerance conditions, and add adequate bulk capacitance on VCC to prevent UVLO retriggering during start-up.
TL750M05CKCSE3 - 750mA 5V LDO Regulator, TO-220 | Texas Instruments
The Texas Instruments TL750M05CKCSE3 is a 750-mA, 5V fixed-output, low-dropout positive voltage regulator housed in a 3-pin TO-220 (KCS) package with tab. Designed specifically for battery-powered and automotive systems, it delivers a regulated 5V output at up to 750 mA from a wide input range up to 26 V, with very low dropout voltage and extremely low quiescent current. The device is fully protected against 60-V load-dump transients, reverse-battery conditions, overvoltage, and includes internal thermal-overload and overcurrent-limiting protection. What is an LDO (Low-Dropout) linear regulator? An LDO is a type of linear voltage regulator that maintains a stable output voltage even when the input voltage is only slightly higher than the output - the 'dropout' voltage. Compared to standard regulators, LDOs offer tighter regulation, faster transient response, and very low quiescent current, making them ideal for post-regulation after a switching converter or for direct battery-powered applications. In the broader taxonomy, the TL750M05 belongs to linear regulators, a subset of voltage regulators, which sit under power management ICs in the semiconductor hierarchy. Key features include very low dropout voltage (less than 750 mV at full load), 60-V load-dump protection, internal current limiting, thermal shutdown, and reverse-battery protection. The fixed 5V output eliminates external resistor dividers, simplifying the BOM. The TO-220 package with metal tab enables direct PCB mounting or heatsink attachment for high-power dissipation. The TL750M05CKCSE3 uses a bipolar pass-element architecture optimized for very low quiescent current draw, which extends battery life in standby conditions. It is specifically engineered to survive the harsh electrical environment of automotive 12V systems, including jump-start, load-dump, and reverse-battery events. Typical applications include automotive infotainment and instrument clusters, body control modules, post-regulation after switching converters, battery-powered industrial equipment, and any 12V/24V system that requires a regulated 5V rail with robust transient protection. The TL751M series variant adds an enable pin for power sequencing. When designing with this device, ensure input and output capacitors are placed close to the IC, and use a sufficient copper pour or external heatsink when VIN-VOUT differential is high. The tab is electrically connected to ground or output depending on the version - always verify against the datasheet before mounting. This page synthesizes distributor pricing, drop-in alternatives from the same TL750M family, and practical design notes not found in the manufacturer datasheet alone.
TLC5947DAPR - 24-Ch 12-Bit PWM LED Driver | Texas Instruments
The Texas Instruments TLC5947DAPR is a 24-channel, 12-bit constant-current sink LED driver with an internal oscillator, housed in a 32-pin HTSSOP (DAP) package with PowerPAD. Each of the 24 channels is individually adjustable with 4096 PWM grayscale steps, and the current of all 24 outputs is set by a single external resistor. Per-channel output current is rated at 30 mA. What is a constant-current LED driver? A constant-current LED driver is a specialized power management IC that regulates the current flowing through each LED string to a precise setpoint, regardless of variations in forward voltage, temperature, or supply voltage. Compared to a simple current-limiting resistor, it improves brightness uniformity, extends LED lifetime, and enables per-channel grayscale dimming. Constant-current sinks sit hierarchically inside LED drivers, which themselves are a sub-category of power management ICs alongside voltage regulators and battery management devices. The TLC5947DAPR further extends this role by adding 12-bit PWM grayscale control, dimming that circuit apart from any discrete MOSFET dimmer or boost-converter driver. Key differentiating features include 30 mA per-channel constant-current sinking, 12-bit (4096-step) PWM grayscale resolution, an internal oscillator that removes the need for an external PWM clock, a serial shift-register interface for cascaded multi-device chains, and integrated thermal shutdown. The wide VCC supply range supports battery and bus-powered designs, while 24 channels per IC minimize driver count in large LED matrices and signage. Architecturally, the TLC5947DAPR uses a serial-in/parallel-out shift register feeding 24 internal PWM counters that are clocked by the internal oscillator. Gray scale (GS) data is latched into the device via the serial interface and automatically replayed each PWM cycle, freeing the host microcontroller from continuous refresh. A single external IREF resistor sets the global current for all 24 channels, simplifying BOM while preserving per-pixel dimming accuracy. Typical applications include full-color LED video displays, RGB signage, architectural lighting, decorative and stage lighting, and large LED matrix backlighting. The cascading serial interface also makes it well suited to daisy-chained WS2812x-style "NeoPixel" replacement designs where deterministic, hardware-refreshed grayscale is required without MCU overhead. When designing with this device, place the IREF resistor close to the IREF pin to minimize noise pickup, and ensure the PowerPAD is soldered to a sufficient copper area (typically 1 square inch) to keep junction temperature within the 150 C thermal-shutdown limit under full 24-channel load. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
TLC5955RTQR - 48-Ch 16-Bit PWM LED Driver w/ DC, BC | TI
The Texas Instruments TLC5955RTQR is a 48-channel, constant-current sink LED driver with 16-bit (65,536-step) PWM grayscale control, 7-bit (128-step) dot correction, and 8-bit brightness control, housed in a 56-pin QFN (RTQ) 8x8 mm package. It supports per-channel sink current up to 23.9 mA when VCC ≤ 3.6 V (MC = 5) and 31.9 mA when VCC > 3.6 V (MC = 7), with on-chip open/short LED detection. An LED driver is a specialized power-management IC that translates low-voltage digital brightness data into precisely regulated constant currents, allowing each LED in a matrix to be set to an exact luminance level. The TLC5955 belongs to the constant-current LED driver sub-category within Power Management ICs, sitting between generic GPIO expanders and high-voltage LED matrix drivers. It is typically used in displays where uniform brightness and fine grayscale steps matter more than raw current capability. Key features include 48 individually-controllable constant-current sink outputs, 16-bit Enhanced Spectrum or Conventional PWM grayscale, 7-bit dot correction that compensates brightness mismatch between LED channels, 8-bit global brightness control, on-chip circuitry that detects open or shorted LEDs failures in real time, an internal current setting register eliminating many external resistors, and a 30 MHz cascadable serial interface. The serial shift register design lets multiple TLC5955s share one SPI/QSPI bus for very large panels. Internally, the device uses a precision bandgap reference and matched current-mirror sinks. A global 8-bit brightness register scales all 48 channels simultaneously for overall panel brightness, while the 7-bit DC register fine-tunes each channel's bias current to mask LED forward-voltage variation. The 16-bit PWM counter is clocked from an external GS reference clock, and Enhanced Spectrum PWM spreads the switching edges across multiple sub-frames to reduce EMI peak energy. Open/short detection compares each output voltage against programmable thresholds between successive PWM refresh cycles without disturbing the panel image. Typical applications include full-color RGB LED video displays, indoor/outdoor LED signs, LED billboard panels, decorative architectural lighting, and stage lighting fixtures. The TLC5955 is especially well suited to high-channel-count panels where a single MCU cannot provide enough PWM pins and where uniform brightness across thousands of LEDs is critical. When designing with this part, route the GSCLK and SCLK lines as controlled-impedance traces and keep them away from the constant-current outputs to avoid coupling. Place the 0.1 µF VCC decoupling capacitor within 3 mm of the supply pin and follow the datasheet ground-plane recommendations. Note that VCC must be in the 3 V to 5.5 V range while the LED supply (VLED) can be higher, and the sink outputs can withstand up to 17 V per channel. This page consolidates distributor pricing, true drop-in alternatives, and practical design notes that go beyond the bare datasheet, giving an engineer a single reference for selecting and sourcing the TLC5955RTQR.
TLC6C5712QPWPRQ1 - 12-Ch AEC-Q100 LED Driver | Texas Instruments
The Texas Instruments TLC6C5712QPWPRQ1 is an automotive-grade 12-channel constant-current-sink LED driver with full diagnostics and PWM dimming, delivering up to 75 mA per channel from a 3 V to 5.5 V supply in a 28-pin HTSSOP (PWP) package. Per the TI product page, the device is qualified to AEC-Q100 for -40C to +125C operation. A constant-current-sink LED driver is a type of linear LED driver IC that regulates the current flowing through each LED string by sinking a precisely controlled current to ground. Within the power-management hierarchy, it sits under LED drivers -> linear current regulators -> power management ICs. Unlike simple resistive ballast or open-drain switches, a constant-current sink holds LED brightness constant despite forward-voltage variation, supply drift, and temperature change, which is essential for color and brightness consistency. Key features include 12 independent current-sink outputs rated at 75 mA each, PWM-based dimming for precise brightness control, and a comprehensive diagnostic suite that detects open-circuit, short-circuit, and other fault scenarios. TI designed this device specifically for safety-critical automotive cluster lighting, where system-level functional-safety considerations demand per-channel fault detection to maintain brightness and color-temperature consistency across many LEDs. Technically, the device uses a 12-bit architecture with internal current-setting registers and serial control, allowing the microcontroller to program per-channel current and read back diagnostic status. The current-sink topology is linear, adding no switching noise to the LED rails, while PWM dimming achieves wide-range average brightness without color shift. Output voltage rating of 7 V provides headroom for LED stack variation. Typical applications include automotive instrument-cluster backlighting, indicator and telltale LEDs, and other safety-critical multi-channel LED lighting in vehicles. The 12-channel density reduces BOM count versus discrete transistor solutions while adding diagnostics unavailable in discrete designs. A key design consideration is thermal dissipation: at 75 mA per channel with a large LED-headroom voltage, package power dissipation must be checked against the HTSSOP PowerPAD thermal capability, using copper pour under the pad. This page adds value beyond the datasheet by synthesizing distributor pricing, availability, drop-in alternative analysis, and practical design notes in one place.
TLC6C5724QPWPRQ1 - 24-Channel 50mA LED Driver, AEC-Q100 | TI
The Texas Instruments TLC6C5724QPWPRQ1 is an automotive-grade 24-channel constant-current RGB LED driver with full LED diagnostics, delivering up to 50 mA per output channel in a 38-pin HTSSOP (PWP) package with exposed pad. It features 7-bit dot correction with two ranges per output, 8-bit group intensity control per color group, and 12-, 10-, or 8-bit PWM dimming resolution. A constant-current LED driver is a type of power management IC that regulates current (rather than voltage) through LED strings. Because LED brightness and color depend directly on forward current, constant-current drivers eliminate the brightness variation that plagues simple resistive ballast designs. Within the power management hierarchy, the TLC6C5724-Q1 belongs to the linear LED driver family with integrated PWM dimming and dot correction, positioned as a system-level solution for matrix and string LED lighting control. Key differentiating features include the per-channel 7-bit dot correction with two selectable current ranges, which lets a single design compensate for LED forward-voltage binning across red, green, and blue dies; group-level 8-bit intensity control that simplifies color calibration; and a selectable 12-bit PWM engine supporting dimming ratios suited to automotive interior and exterior lighting. The full-diagnostics subsystem detects open-circuit and short-circuit LED faults, output shorts to GND, and provides fault reporting for functional-safety-oriented designs. Architecturally, the TLC6C5724-Q1 combines a constant-current sink per channel with an external resistor that sets the full-scale 50 mA maximum output current, a serial data interface for configuration, and an on-chip diagnostic engine that scans LED health during operation. Grayscale and dot-correction data are latched internally, allowing PWM dimming to continue glitch-free while new data shifts in, an important behavior for seamless brightness transitions. Typical applications include automotive RGB ambient interior lighting, rear combination lamps and turn indicators, architectural and accent lighting, and RGB status or backlighting in industrial displays. Its AEC-Q100 qualification and full diagnostics make it especially suitable for safety-relevant exterior lighting where fault reporting is required. When designing, set the external current-setting resistor so the 50 mA absolute maximum per-channel current is respected across temperature, and budget thermal dissipation for the worst-case channel currents in the exposed-pad HTSSOP package with an adequate copper pour. This page synthesizes verified distributor data, drop-in same-family alternatives, AEO-optimized FAQs, and practical design notes not found in the manufacturer datasheet.
TLD11141EPXUMA1 - 180mA 40V LITIX Basic+ LED Driver | Infineon
The Infineon TLD11141EPXUMA1 is a single-channel high-side LED driver IC from the LITIX Basic+ family, delivering up to 180 mA of regulated constant current to a high-side connected LED load from a 40 V supply rail, housed in a 14-pin PG-TSDSO-14 surface-mount package with exposed thermal pad. It integrates an output stage and a single-channel driver, supporting both DC operation and PWM dimming for accurate brightness control across automotive and industrial lighting. Background Knowledge: An LED driver IC is a specialized constant-current source that regulates the current through a high-brightness LED (HB-LED), protecting it from supply transients and thermal runaway while enabling brightness control. The category hierarchy is: LED driver -> lighting driver -> power management IC -> semiconductor. High-side drivers, like the TLD1114-1EP, place the current source between the supply rail and the LED anode, leaving the LED cathode at ground, which simplifies wiring in chassis-grounded systems and avoids ground-shift issues. This makes them ideal for automotive body and tail-light applications where one terminal is chassis-referenced. The TLD11141EPXUMA1 delivers up to 180 mA per channel, supports a wide 5.5 V to 40 V supply range (load-dump tolerant), and provides PWM dimming capability for variable brightness. Its integrated output stage minimizes external component count, while built-in protection features include over-temperature shutdown, short-circuit protection, and reverse-polarity robustness typical of Infineon's LITIX Basic+ family. The PG-TSDSO-14 exposed-pad package provides low thermal resistance, allowing reliable operation at the device's rated current. Internally, the device uses a precision bandgap reference and a current-sense architecture that regulates output current independent of LED forward voltage variations across temperature. The high-side drive topology simplifies PCB routing and supports parallel-channel configurations via multiple TLD1114-1EP devices for higher-current LED strings or multi-channel lighting systems. Typical applications include automotive tail lights, brake lights, daytime running lights (DRL), interior ambient lighting, status indicators, and industrial signage. The PWM dimming interface allows direct connection to a microcontroller for dynamic brightness adjustment, supporting safety features such as dynamic turn signals. When designing with this device, observe the maximum junction temperature rating and use adequate PCB copper area on the exposed pad to maintain thermal performance. Always verify the output current setting resistor value against the LED manufacturer's recommended forward current, and add an input capacitor close to the supply pin for load-dump and EMI robustness. This page synthesizes distributor stock data, drop-in alternative MPNs from the LITIX Basic+ family, and practical thermal/design guidance that goes beyond the manufacturer datasheet excerpts.
TLD1124ELXUMA1 - 360mA 1-Ch Linear LED Driver | Infineon LITIX
The Infineon TLD1124ELXUMA1 is a one-channel high-side linear LED driver IC from the LITIX™ Basic family, delivering up to 360 mA continuous output current to drive high-power LEDs in automotive lighting systems. Housed in a 14-pin PG-SSOP-14-EP (exposed pad) package, it integrates the output stage, current sense, and protection circuitry to provide a compact, robust solution for constant-current LED strings fed from a 5 V to 40 V supply rail. A linear LED driver (also called an LED controller or linear current regulator) is a power-management IC that maintains a constant, programmed current through an LED or LED string rather than a constant voltage. Within the broader power hierarchy, linear LED drivers sit beneath switching DC-DC LED drivers and above simple ballast resistors; they trade conversion efficiency for ultra-low EMI, fast PWM dimming response, and minimal external component count — making them the preferred topology for noise-sensitive or cost-sensitive automotive lamp modules. Key features of the TLD1124ELXUMA1 include an adjustable constant output current up to 360 mA set by a single external sense resistor, a wide supply range suited to automotive 12 V and 24 V bus systems, integrated PWM dimming via an enable/dimming input, and comprehensive protection including open-LED, short-to-GND, short-to-battery, over-temperature, and over-current diagnostics. The exposed thermal pad of the PG-SSOP-14-EP package provides a low θJA path to the PCB copper, which is essential when dissipating several watts in a linear topology. The device is qualified to AEC-Q100 for automotive use and is targeted at rear lamps, daytime running lights, interior mood lighting, and instrument-panel backlighting. Typical design tips: choose a sense resistor of roughly 0.5 Ω to 1.5 Ω to program the 360 mA nominal current, keep the input bypass capacitor within 5 mm of the VS pin, and connect the exposed pad to a copper area of at least 1 cm². This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
TLD1125ELXUMA1 - 1-Ch 360mA Linear LED Driver | Infineon LITIX
The Infineon TLD1125ELXUMA1 is a one-channel high-side constant-current LED driver IC from the LITIX Basic family, delivering up to 360 mA of regulated output current in a 14-pin PG-SSOP-14-EP package with exposed thermal pad. It is designed for linear driving of low- to medium-power LEDs in automotive and industrial lighting applications, with PWM dimming support for brightness control. What is a linear LED driver? A linear LED driver is a semiconductor device that regulates the current flowing through an LED string by dissipating excess voltage as heat across an internal pass element, instead of switching the inductor as a DC-DC converter does. Linear LED drivers sit within the broader power-management IC hierarchy: linear LED driver -> constant-current driver -> LED driver -> power management IC -> semiconductor. They are valued for low EMI, no inductor requirement, and very small PCB footprint, at the cost of reduced electrical efficiency compared to switching topologies. The TLD1125EL integrates an output stage that sustains load currents up to 360 mA, supports PWM dimming for precise brightness modulation, and includes protection features such as over-temperature shutdown, open-LED detection, and short-to-ground protection. Its 14-pin SSOP with exposed pad enables efficient heat removal on the PCB copper, which is essential because the linear topology converts the VIN-VLED drop into thermal energy. Automotive qualification per AEC-Q100 makes it directly suitable for tail lamps, daytime running lights (DRL), turn indicators, and interior ambient lighting. The output stage architecture combines a reference, error amplifier, and power transistor monolithically, achieving tight output-current accuracy and stable behavior across temperature. The exposed thermal pad (EP) on the bottom of the package provides a low thermal-resistance path to the PCB copper, enabling sustained high-current operation without external heatsinking. Typical applications include automotive rear combination lamps, turn signal indicators, daytime running lights, interior ambient lighting, and industrial signage or status indicators. Its footprint compatibility with other Infineon LITIX Basic family members allows platform reuse across lighting variants with different current ratings. When designing with this part, size the PCB copper pour beneath the exposed pad to keep the junction temperature below 150 C, and ensure that VIN does not exceed the absolute maximum rating even during load-dump transients. Place the decoupling capacitor close to the supply pin to stabilize the internal reference. This page synthesizes distributor pricing, pin-to-pin compatible alternatives, and practical design notes that supplement the manufacturer datasheet for faster engineering decisions.
TLD11731ETXUMA1 - 400mA Linear LED Driver | Infineon LITIX
The Infineon TLD11731ETXUMA1 is a single-channel low-side LED driver IC with 400 mA output current, packaged in a 16-pin PG-TFDSO-16-1 (TSSOP-16 exposed pad) surface-mount package. The device integrates a 1-channel linear current sink with PWM dimming support and Infineon's proprietary power shift feature for improved thermal performance in space-constrained automotive lighting modules. It is qualified to AEC-Q100 for automotive applications. A linear LED driver (constant-current sink) is a type of LED driver IC that regulates current through an LED string by dissipating excess voltage as heat, rather than switching it. Linear drivers sit within the broader LED driver IC category, alongside switching buck/boost LED drivers; they are preferred for applications where low EMI, no audible noise, and minimal external component count are priorities, at the cost of lower efficiency when VIN approaches VLED. They belong to the power management semiconductor family. Key features of the TLD11731ETXUMA1 include a wide input voltage range of 4.5 V to 40 V, an output voltage tolerance rated up to 36 V, 400 mA maximum output current per channel, integrated PWM dimming input, and the LITIX power shift feature that redistributes power dissipation for better thermal spreading. The exposed thermal pad enables direct PCB heatsinking without external heatsinks in typical automotive rear-light and interior-lighting layouts. The device uses a bipolar-based linear regulator architecture with internal control logic, current sense, and thermal protection circuitry. An internal reference and sense resistor set the output current; the device regulates the drop across its OUT pin to keep current constant regardless of LED forward-voltage variations. Thermal shutdown and load-disconnect protection improve system robustness against short-to-ground and open-load faults on the LED string. Typical applications include automotive rear combination lamps (tail, brake, turn), interior ambient lighting, dashboard backlighting, side-marker lights, daytime running light segments, and general-purpose industrial LED strips. The AEC-Q100 qualification plus wide 4.5 V–40 V input range also suits 12 V/24 V commercial-vehicle lighting. In power-rail systems, the TLD11731ETXUMA1 typically replaces discrete resistor-current-limit networks with a single IC, reducing PCB area and improving LED brightness uniformity. When designing with the TLD11731ETXUMA1, calculate worst-case power dissipation as PD = (VIN - VLED) x ILED and ensure the PCB copper area tied to the exposed pad keeps junction temperature below the thermal-shutdown threshold. The PWM dimming input accepts logic-level signals; for analog dimming, the device must be operated within its PWM duty-cycle range. This page synthesizes distributor pricing, drop-in alternatives from the Infineon LITIX family, and practical thermal/layout design notes not found in the manufacturer datasheet.
TLD1310ELXUMA1 - 3-Ch 120mA LED Driver LITIX Basic | Infineon
The Infineon TLD1310ELXUMA1 is a three-channel high-side LED driver IC from the LITIX Basic family, capable of driving up to 120 mA per channel with integrated output stages. Housed in a 14-pin PG-SSOP-14-5 package with exposed thermal pad, it is designed to control LEDs in automotive and industrial lighting applications where linear current regulation is preferred over switching topologies. What is an LED driver IC? An LED driver IC is a specialized power management integrated circuit that regulates the current flowing through one or more LED strings, maintaining constant brightness despite variations in supply voltage, temperature, and forward voltage. LED drivers are a subcategory of PMIC (Power Management IC) within the broader semiconductor hierarchy. High-side linear drivers like the TLD1310EL place the regulator between the supply and the LED load, providing accurate current control without the EMI emissions of switching converters. Key features of the TLD1310ELXUMA1 include three independently controlled constant-current output channels rated at up to 120 mA per channel, an operating supply voltage range compatible with 9V/12V/15V/18V/24V automotive systems, and an analog/digital dimming interface. The LITIX Basic architecture combines low dropout voltage with high current accuracy across the full automotive temperature range. The device also integrates protection features including open-load detection, short-to-ground detection, and over-temperature shutdown. The TLD1310EL uses bipolar transistor-based output stages with a precision bandgap reference, delivering stable current regulation even with large supply variations typical of automotive cranking and load-dump transients. The exposed pad PG-SSOP-14-5 package provides a low thermal resistance path, enabling sustained operation at high ambient temperatures. Built-in diagnostic outputs enable fault reporting to a host microcontroller. Typical applications include automotive rear combination lamps, turn indicators, daytime running lights (DRL), interior ambient lighting, and industrial signage. It is particularly suited for applications requiring AEC-Q100 qualification where multiple LED channels must be driven with precise current matching. When designing with this device, ensure that the supply voltage provides adequate headroom above the LED string forward voltage at full current. Use a low-ESR decoupling capacitor near the supply pin to suppress voltage transients on the automotive bus. The exposed pad must be soldered to a sufficient copper pour to dissipate heat at maximum load.
TLD21313EPXUMA1 - 3-Ch 60mA LED Driver, 40V LITIX Linear | Infineon
The Infineon TLD21313EPXUMA1 is a 3-channel linear current source LED driver from the LITIX family, delivering up to 60 mA per channel across an input voltage range of 5.5 V to 40 V, housed in a 14-pin PG-TSDSO-14 exposed-pad (TSSOP-14-EP) package. AEC-Q100 qualified, it is purpose-built for automotive exterior and interior lighting where a stable, regulated current is required to drive high-brightness LEDs from a fluctuating automotive supply rail. Each of the three outputs is independently PWM-dimmable, enabling precise brightness control for tail lamps, daytime running lights, and indicator functions. An LED driver IC is a specialized power management device that regulates the current flowing through an LED string, rather than simply setting the voltage. By forcing a constant current, the driver eliminates the brightness variation that would otherwise occur with temperature drift, supply fluctuation, or LED forward-voltage binning spread. Within the broader semiconductor taxonomy, the TLD21313EPXUMA1 belongs to the LITIX Linear family, which sits inside the Power Management IC (PMIC) category of linear LED drivers - a sub-class of voltage regulators that are optimized for low-noise, low-EMI current regulation rather than high-efficiency conversion. Key features include a 5% output current accuracy, integrated reverse-polarity protection, an enable/diagnostic pin, and built-in thermal shutdown with auto-recovery. The exposed thermal pad on the TSSOP-14-EP package keeps junction temperatures manageable even when all three channels are active at full 60 mA load, while the wide 5.5 V to 40 V input range tolerates load-dump transients common in 12 V and 24 V automotive systems. Typical applications include automotive rear combination lamps, turn indicators, brake lights, and interior ambient lighting, where the TLD21313EPXUMA1's combination of three independently dimmable channels in a single compact package reduces BOM cost and PCB area. Each output is driven by a constant-current sink, so the same board design can be reused across vehicle programs simply by changing the external sense resistor. When designing with this part, ensure the exposed pad is soldered to a sufficiently large copper pour to keep junction temperature below the thermal shutdown threshold. The PWM dimming input accepts logic-level signals, but a small RC filter on the PWMI pin reduces EMI. Designers should also leave adequate headroom above the LED string's total forward voltage to maintain constant-current regulation across the full dimming range. This page synthesizes distributor pricing, automotive-grade drop-in alternatives, and practical PCB layout guidance not collected in any single datasheet.
TLD21413EPXUMA1 - Triple 80mA LED Driver IC | Infineon
The Infineon TLD21413EPXUMA1 is a triple-channel high-side LED driver IC from the LITIX Basic+ family, providing three independent constant-current outputs of up to 80 mA per channel in a 14-pin PG-TSDSO-14 package with exposed thermal pad. It operates from a wide 5.5 V to 40 V supply range and supports PWM dimming via a dedicated DIM pin, with each output stage integrating a power transistor and current-setting reference for tight channel-to-channel matching. A high-side LED driver is a semiconductor device that sources current through an LED string from the positive supply rail while the LEDs sit between the driver output and ground. The high-side topology simplifies PCB routing by allowing multiple LED strings to share a common ground, eliminates ground-loop concerns, and enables per-string diagnostics. As a member of the LITIX Basic+ family, the TLD21413EPXUMA1 targets cost-sensitive automotive and industrial lighting where moderate current, fault detection, and small PCB area are critical requirements. Key features include 80 mA per channel continuous output current (60 mA per the typical-application range), built-in PWM dimming capability down to low duty cycles, three independently controlled constant-current outputs, integrated reverse-polarity protection, and an exposed-pad TSSOP-14 package providing low thermal resistance for sustained high-current operation. Each output stage is trimmed to deliver accurate, channel-matched current without external ballast resistors, which simplifies BOM and improves reliability. The TLD21413EPXUMA1 uses a precision bandgap reference and matched output transistors to achieve tight current regulation across load, supply, and temperature variations. The high-side current source architecture allows the device to drive LEDs connected to chassis ground, simplifying harness design in automotive rear-combination lamps, signal light modules, and interior RGB ambient lighting strips where channel independence and low EMI are mandatory. Typical applications include automotive rear lighting (tail, brake, turn signal), RGB ambient interior lighting, status indicator clusters, decorative LED strips, and general industrial signage. The wide 5.5 V to 40 V input range also supports 12 V and 24 V vehicle buses directly without additional pre-regulation. When designing with the TLD21413EPXUMA1, observe the thermal limits of the PG-TSDSO-14 exposed pad and place sufficient copper pour on the PCB to dissipate up to 1 W per channel. The DIM pin accepts a PWM signal at logic levels; ensure the dimming frequency is below the device's specified maximum to avoid output-stage ringing. This page consolidates distributor pricing, drop-in compatible LITIX Basic+ alternatives, and practical PCB/thermal design notes - engineering content that goes beyond what is summarized in the manufacturer datasheet.
TLD21421EPXUMA1 - 180mA Linear LED Driver AEC-Q100 | Infineon
The Infineon TLD21421EPXUMA1 is a high-output-current linear LED driver with 180 mA per output channel, designed for automotive exterior and interior lighting, in a 14-pin PG-TSDSO-14 (TSSOP-14 with exposed pad) package. It features a wide 5.5 V to 40 V supply range, supports PWM dimming down to very low duty cycles, and meets the AEC-Q100 automotive qualification standard. The device belongs to Infineon's LITIX Basic+ family of constant-current LED controllers. A linear LED driver is a type of constant-current source that regulates LED brightness by dissipating excess input voltage as heat across an internal pass element, as opposed to a switching driver that stores energy in an inductor. Linear drivers are simpler, EMI-quiet, and free of inductive ringing, making them ideal for safety-relevant automotive lighting and small-form-factor lamp modules where the VIN-VLED differential is modest. Key features of the TLD21421EPXUMA1 include 180 mA programmable output current via an external sense resistor, integrated reverse-polarity protection, load-dump robustness up to 40 V on the supply pin, overtemperature shutdown with auto-recovery, and a single-channel topology that drives one LED string. The exposed thermal pad of the PG-TSDSO-14 package enables efficient heat removal, which is critical for linear drivers that absorb the full input-to-LED voltage difference. The device also provides a status/diagnostic output for fault feedback to the ECU. The TLD21421EPXUMA1 uses a current-control loop referenced to an internal bandgap, with a sense resistor on a dedicated pin setting the regulated output current. Output current accuracy is typically within +/-3% across temperature, ensuring uniform brightness between LED modules. The integrated protection block includes open-LED detection, short-to-ground detection, and thermal derating, all critical for ISO 26262 functional-safety analysis in body and lighting ECUs. Typical applications include automotive tail-light and brake-light clusters, turn signals, daytime running lights (DRL), interior ambient lighting, and two-wheeler rear lamps. The 5.5 V to 40 V input range covers 12 V and 24 V vehicle buses directly, eliminating the need for a pre-regulator. The PWM dimming input allows flicker-free brightness control for both headlamp leveling and animated indicator functions. When designing with this device, calculate power dissipation as (VIN - VLED) x ILED and confirm that the exposed pad receives adequate copper area to keep junction temperature below 150 C. The 14-pin TSSOP exposed-pad footprint also requires that the PCB land pattern uses thermally enhanced vias under the e-pad to conduct heat into inner copper planes. This page synthesizes distributor pricing, AEC-Q100 qualification details, drop-in compatible LITIX family variants, and practical PCB thermal design notes not consolidated on any single distributor or manufacturer page.
TLD22522EPXUMA1 - Dual 120mA LED Driver, PG-TSDSO-14 | Infineon
The Infineon TLD22522EPXUMA1 (LITIX™ Basic+ TLD2252-2EP) is a dual-channel high-side LED driver IC with integrated output stages, rated to 120 mA per channel, housed in a PG-TSDSO-14 exposed-pad package. It supports switched-capacitor (charge pump) DC-DC controller topologies and pulse-width modulation (PWM) dimming with high accuracy. According to the manufacturer datasheet, the device is qualified to AEC-Q100 and is intended for automotive LED lighting subsystems. An LED driver IC is a power-management semiconductor that regulates the current flowing through one or more light-emitting diodes. Within the system taxonomy, an LED driver belongs to the power-management IC family, which itself sits inside the broader category of mixed-signal and analog semiconductors. High-side drivers specifically place the switch between the load and the positive supply, allowing the load (typically an LED string) to share a common ground with the controller - simplifying wiring and fault detection. Key features of the TLD22522EPXUMA1 include a per-channel constant-current output programmable via an external reference resistor, an integrated PWM engine for digital dimming, and built-in protection functions for load-dump transients and over-temperature events. The exposed thermal pad (PG-TSDSO-14) reduces junction-to-ambient thermal resistance, enabling sustained 120 mA output per channel without external heatsinking in most automotive body-lighting applications. The device uses a bipolar-DMOS mixed process that combines precise analog reference circuitry with robust DMOS output stages, allowing accurate current regulation over wide supply variations. Internal charge-pump support means that designers can implement a compact switched-capacitor boost or buck-boost topology with minimal external components, reducing PCB area compared to inductor-based solutions. Typical applications include automotive tail-light and brake-light LED chains, turn-indicator and side-mirror lighting modules, interior ambient lighting strips, and two-channel status indicators in industrial HMIs. The dual-channel architecture makes it well suited to symmetric lighting loads such as left/right or top/bottom pairs. When designing with this part, observe the maximum supply voltage and ensure the output current setting resistor is within the supported range. Proper PCB layout is critical: route the high-current LED returns on a wide copper pour and tie the exposed pad to a thermal island to keep junction temperature within the AEC-Q100 envelope. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
TLD2311ELXUMA1 - 3-Ch 120mA LED Driver | Infineon LITIX Basic
The Infineon TLD2311ELXUMA1 is a 3-channel high-side linear LED driver IC from the LITIX™ Basic family, delivering up to 120 mA per channel with integrated output stages, housed in a PG-SSOP-14-5 power package. It is designed to drive low- to medium-power LEDs in automotive exterior and interior lighting systems, where each of the three constant-current outputs is independently controlled by a low-power microcontroller via PWM and analog dimming inputs. The device supports an LED supply voltage range suitable for 12V automotive battery systems with load-dump margin. A linear constant-current LED driver is a semiconductor device that regulates the forward current through one or more LED strings by dissipating excess voltage as heat on a high-side or low-side pass element. It belongs to the category hierarchy: LED driver -> power management IC -> semiconductor. Compared with switched-mode LED drivers, linear topologies eliminate EMI, simplify the BOM (no inductors, no output capacitors), and provide inherently flicker-free current - critical for safety lighting such as brake lights, tail lights, and daytime running lights (DRLs). Key features include three independent 120 mA current outputs, integrated power transistors with thermal protection, PWM dimming support, and an analog/digital dimming input for brightness control. The PG-SSOP-14-5 package with exposed pad provides a low thermal resistance path, allowing continuous operation at the rated current without an external heatsink in typical automotive lamp modules. Built-in diagnostic functions detect open-LED, short-LED, and overtemperature conditions and report them back to the microcontroller for fail-safe system behavior. The TLD2311EL architecture uses three parallel high-side current regulators, each trimmed to a precise reference. The LITIX™ Basic technology targets cost-sensitive automotive lighting applications that previously required discrete transistor solutions. Footprint compatibility across the LITIX™ Basic family allows designers to migrate from 2-channel to 3-channel parts, or to higher-current variants, without changing the PCB. Typical applications include automotive rear combination lamps (brake, tail, turn signal), daytime running lights, interior ambient lighting, and status indicator LED strings. The device is qualified for the harsh automotive environment, including extended temperature range and load-dump transient tolerance, making it well suited for body-electronics ECUs and lighting control modules. When designing with the TLD2311EL, ensure that the maximum voltage drop across each channel stays within the SOA of the integrated output transistor. For LED strings with long chains, calculate the worst-case voltage drop and provide sufficient headroom. The PG-SSOP-14-5 exposed pad must be soldered to a sufficient copper area to maintain junction temperature below the thermal shutdown threshold. This page synthesizes distributor pricing, LITIX™ Basic family drop-in alternatives, automotive lighting design notes, and PG-SSOP-14-5 thermal layout guidance that is not consolidated on the manufacturer product page.
TLD2314ELXUMA1 - 3-Ch 120mA LED Driver | Infineon LITIX
The Infineon TLD2314ELXUMA1 is a 3-channel high-side linear LED driver from the LITIX Basic family, delivering up to 120 mA per channel in a PG-SSOP-14-5 (exposed pad) package. It integrates three output stages that are optimized for controlling low- to medium-power LEDs in automotive front and rear lighting, with a wide operating voltage range suited to 12 V and 24 V vehicle bus systems. The device supports linear dimming via the SET pins, with an LED current programmed by an external sense resistor. A linear constant current LED driver is a semiconductor device that regulates the forward current of one or more LEDs by acting as a controlled series pass element. Unlike switching LED drivers, linear LED drivers introduce no switching noise into the supply rail, simplifying EMI compliance in sensitive automotive subsystems. Linear LED drivers sit within the broader power management IC hierarchy, alongside switching LED drivers, DC-DC converters, and voltage regulators, and are commonly used where simplicity, small PCB area, and clean analog behavior outweigh efficiency considerations. Key features of the TLD2314ELXUMA1 include three independently-controllable output channels with a typical output current of 120 mA, very low headroom voltage, integrated protection against over-temperature, open-LED, and short-to-ground faults, and a wide supply operating range. The device offers footprint compatibility with other members of the Infineon LITIX Linear family, allowing designers to scale current or channel count without redesigning the PCB. The TLD2314ELXUMA1 is built on a bipolar power process that integrates DMOS output stages, giving it robust current-handling capability with excellent thermal coupling to the exposed pad of the PG-SSOP-14-5 package. The exposed pad provides a low thermal resistance path to the PCB copper, enabling the part to dissipate the heat generated when driving multiple high-current LED strings without external heatsinking. Diagnostic feedback via status outputs allows the host microcontroller to detect fault conditions on each channel. Typical applications include automotive rear combination lamps, brake lights, turn indicators, daytime running lights, interior ambient lighting, and motorcycle or e-bike lighting. The combination of high-side drive, low dropout, and integrated diagnostics makes the TLD2314ELXUMA1 particularly well suited to Body Control Module (BCM) and lighting ECU designs where each channel must be independently fault-monitored. When designing with the TLD2314ELXUMA1, ensure that the PCB copper area on the exposed pad is sufficient to keep the junction temperature within the -40C to +150C operating range. Choose the SET resistor value to program the desired channel current, and use the diagnostic feedback to implement open-LED detection in the application firmware. Avoid using the TLD2314ELXUMA1 in applications where the supply-to-LED forward voltage differential would cause excessive dissipation; in those cases, a switching LED driver such as the TLD5097EPXUMA1 is a better fit. This page synthesizes distributor pricing, drop-in alternatives, application guidance, and practical design notes that go beyond the manufacturer datasheet to help engineers select and qualify the TLD2314ELXUMA1 for production.
TLD23313EPXUMA1 - 60mA Triple High-Side LED Driver | Infineon LITIX
The Infineon TLD23313EPXUMA1 is a 60 mA triple-channel high-side constant-current LED driver from the LITIX Basic+ family, housed in a 14-pin PG-TSDSO exposed-pad surface-mount package. It integrates three independently controllable output stages capable of driving LEDs at up to 80 mA per channel, with PWM dimming support through the dedicated input pin. The device operates from a 5.5 V to 40 V supply, making it well-suited to 12 V and 24 V automotive board-net rails. A high-side LED driver is a constant-current source placed between the supply rail and the LED load; it regulates the LED current by modulating the high-side switch rather than the low-side return. Compared to low-side drivers, high-side topologies eliminate the need for the LED cathode to be tied to chassis ground, which simplifies PCB layout, removes ground-shift issues, and provides protection against single-LED short-to-ground faults. The LITIX Basic+ TLD2331-3EP is purpose-built for cost-sensitive automotive exterior and interior lighting applications where PCB area and BOM cost are tightly constrained. Key features include three integrated output stages rated up to 80 mA per channel, digital PWM dimming capability, built-in over-temperature protection with thermal shutdown, and short-circuit / open-load detection. The PG-TSDSO-14 package offers an exposed thermal pad that keeps junction temperature manageable even when driving three parallel LED strings at full current, while the wide 5.5 V to 40 V input range tolerates load-dump transients common in 12 V automotive environments. Programmable output current is set by an external sense resistor on the IS pin. Typical applications include automotive rear combination lamps, daytime running lights (DRL), interior ambient lighting, instrument-cluster backlighting, and motorcycle / e-bike tail-light clusters. The triple-channel integration lets a single IC drive stop / tail / turn or position / DRL / indicator functions that previously required two or three discrete channels. Designers should note that adequate thermal copper under the exposed pad is essential: with three channels at 60 mA each from a 13 V supply, internal dissipation can approach 1 W and demands at least 1 square centimeter of copper pour for reliable operation. The PWM frequency should be selected above 100 Hz to avoid visible flicker in human-perception applications.
TLD23623ETXUMA1 - 3-Ch 150mA LED Driver, AEC-Q100 | Infineon
The Infineon TLD23623ETXUMA1 is a three-channel low-side current driver IC from the LITIX family, integrating three independent output stages with 150 mA per channel in a 16-pin PG-TFDSO-16-1 (Tape & Reel) surface-mount package qualified to AEC-Q100. The device combines linear constant-current regulation with PWM dimming capability across three outputs, supporting up to 9 configurable LED segments per channel for matrix or sequential lighting systems. A linear LED driver is an integrated circuit that regulates the current through one or more strings of LEDs by placing a controlled current source in series with each LED string, typically on the low (cathode) side. Within the broader power-management hierarchy, linear LED drivers sit beneath voltage regulators and are specialized for current-controlled lighting loads, where the IC absorbs the voltage difference between the supply rail and the LED forward voltage as heat. Compared with switching LED drivers, linear drivers avoid inductors and switching noise, simplifying EMI compliance and PCB layout at the cost of lower efficiency when VIN is significantly higher than the LED forward voltage. They are commonly used in automotive tail, signal, and interior lighting where EMC constraints and PCB area are critical. Key features of the TLD23623ETXUMA1 include three independently controllable outputs with linear current regulation up to 150 mA per channel, an integrated PWM dimming input for brightness control, programmable output current via an external sense resistor, and integrated thermal protection with automatic current derating. The driver also supports diagnostic feedback such as open-load, short-to-ground, and over-temperature detection, which is essential for functional-safety aware automotive lighting designs. Technically, the TLD23623ETXUMA1 uses a low-side linear topology with three parallel driver channels, each containing an internal power transistor, a current-sense amplifier referenced to an external low-side resistor, and a logic block for PWM modulation and fault management. This architecture allows individual channel control and parallel connection for higher currents when the application demands it. Typical applications include automotive rear combination lamps, turn indicators, daytime running lights, sequential tail-light animations, and matrix-style signal lighting. The AEC-Q100 qualification, combined with its wide operating temperature range, makes it well suited for under-hood and exterior body lighting that must survive harsh thermal and electrical environments. When designing with this part, ensure adequate PCB copper area on the exposed pad to dissipate the heat generated by the linear regulator. A 4-layer board with a 1 square-inch thermal land is recommended for full-load operation in sealed lamp housings. This page consolidates distributor pricing, drop-in alternatives, and design notes that go beyond the manufacturer datasheet alone.
TLD23723ETXUMA1 - 3-Ch 150mA LED Driver w/ Power Shift | Infineon
The Infineon TLD23723ETXUMA1 is a 3-channel low-side constant-current LED driver from the LITIX Basic+ family, delivering up to 150 mA per channel in a 16-pin PG-TFDSO EP (TFDSO-16-1) exposed-pad package. It supports linear PWM dimming across three independent outputs and includes Infineon's Power Shift feature, which redistributes unused current headroom from inactive channels to active ones, allowing higher effective brightness in mixed-load LED clusters. The device is qualified to AEC-Q100 for automotive lighting applications. A low-side LED driver is an integrated circuit that controls current through an LED string by switching or regulating the path to ground on the cathode side, rather than to the positive supply. Low-side drivers sit within the broader power management IC hierarchy: LED driver -> constant-current driver -> power management IC -> semiconductor. Compared to high-side drivers, low-side topologies are simpler, less expensive, and tolerant of high output voltages, but require the LED string to be tied to a fixed positive rail. Key specifications of the TLD23723ETXUMA1 include three independent 150 mA output channels, integrated Power Shift current redistribution, wide supply voltage support typical for LITIX Basic+ parts, PWM dimming capability, and per-channel diagnostic feedback. The exposed thermal pad (PG-TFDSO EP) reduces junction-to-ambient thermal resistance, supporting continuous operation in thermally constrained lamp housings. The IC is designed for 12 V automotive buses and tolerates load-dump transients defined in ISO 7637. Architecturally, the device pairs three linear current sinks with shared diagnostic logic and a serial interface for PWM duty and fault reporting. Power Shift monitors voltage across each sink and recovers unused compliance headroom by steering surplus current to other channels - a key advantage over fixed 150 mA-per-channel competitors when one LED string draws less than its maximum. Typical applications include automotive tail-light clusters, daytime running lights (DRL), turn-indicator modules, and interior RGB ambient lighting. The AEC-Q100 qualification and 16-pin thermally enhanced package make it equally suited to motorcycle and commercial-vehicle lighting. When designing with this part, ensure PCB copper pour beneath the exposed pad is maximized to meet thermal targets; for PWM dimming below 1 kHz, place a small capacitor across each LED string to suppress line-side ringing.
TLD23923ETXUMA1 - 3-Ch 150mA LED Driver w/ Power Shift | Infineon
Infineon TLD23923ETXUMA1 is a three-channel low-side constant-current LED driver from the LITIX family, delivering up to 150 mA per channel in a 16-pin PG-TFDSO-16-1 (TFDSO EP) package with exposed thermal pad. The part integrates three linear current sinks with PWM dimming capability and a proprietary "power shift" feature that automatically redistributes load between channels to limit overall package dissipation. What is a low-side LED driver? A low-side LED driver is a type of LED driver IC placed in the return path of an LED string, sourcing current to ground instead of switching high-side high voltage. Low-side drivers belong to the LED driver category, which itself is part of power management ICs. Constant-current sinks regulate brightness independent of supply variations and LED forward-voltage spread, which is critical for automotive lighting where LEDs must maintain uniform luminance across hundreds of nodes on a vehicle. Key features include three independently controllable 150 mA current outputs, PWM dimming for brightness modulation, built-in thermal protection, and the Infineon "power shift" load-balancing function. The exposed-pad package keeps junction temperature under control when several channels operate near full scale, and the automotive AEC-Q100 qualification makes the part suitable for safety-relevant exterior lighting. The device is built on Infineon's bipolar/CMOS-DMOS mixed BCD process, which integrates analog regulation, digital logic, and power transistors on a single die. This integration enables per-channel diagnostics, low quiescent current, and short-circuit/over-temperature protection without external components. The TFDSO-16-1 footprint occupies roughly 5x6 mm of board area, allowing dense multi-channel headlamp PCB layouts. Typical applications include automotive rear combination lamps (tail/brake/turn), daytime running lights, interior RGB ambient lighting, and signal-light clusters where three independent PWM-dimmable channels simplify harness routing. The power shift function specifically helps in dynamic turn-indicator and brake-light scenarios where asymmetric channel loading would otherwise create thermal hot spots. When designing with TLD23923ETXUMA1, ensure the exposed pad has at least 1 cm² of continuous copper pour connected to a low-impedance ground plane. A small input decoupling capacitor (typically 100 nF) close to the supply pin is recommended. The power-shift behavior should be evaluated against worst-case channel combinations during thermal simulation. This page synthesizes distributor stock, cross-reference alternatives, and practical design notes not aggregated in the Infineon datasheet, helping engineers select, source, and qualify the part faster.
TLD40203ETXUMA2 - 3-Ch 51.5mA LIN RGB LED Driver | Infineon
The Infineon TLD40203ETXUMA2 is a programmable three-channel linear LED driver engineered for LIN-bus controlled RGB lighting modules, delivering up to 51.5 mA per channel with integrated protection and PWM dimming. Housed in a compact PG-TFDSO-16-1 exposed-pad package, it accepts a wide 5.5 V to 29 V supply range and drives each output stage as a constant-current sink with independent PWM dimming control, making it suitable for automotive interior ambient lighting and RGB status indicators. What is a linear LED driver? A linear LED driver is a class of solid-state lighting IC that regulates LED brightness by placing a controlled current-source or current-sink element in series with each LED string and modulating its on-resistance, rather than by switching the supply with an inductor. Within the broader taxonomy, a linear LED driver belongs to the LED driver category, which itself falls under power management ICs. Compared with switching (buck/boost) LED drivers, linear drivers offer lower EMI, smaller PCB footprint, and simpler BOMs at the cost of lower efficiency when the input-to-LED forward-voltage headroom is large. Key features include three independently programmable constant-current outputs of 51.5 mA each, integrated diagnostic functions such as open-load, short-to-GND, and short-to-VBAT detection, and PWM dimming support for color-mixing and brightness control. The PG-TFDSO-16-1 thermal-enhanced package with exposed die pad allows continuous operation at elevated ambient temperatures up to 125 °C (junction), which is critical for sealed automotive lamp modules. The device is built on Infineon's smart-power BCD process, integrating a LIN 2.x/2.2A/2.2B-compatible transceiver with three protected low-side current sinks. This architecture reduces external component count to a minimum: only bypass capacitors, LIN pull-up, and ESD protection are required externally, while color/brightness profiles are programmed over the LIN bus by a body-control module. Typical applications include LIN-controlled automotive RGB ambient lighting (roof consoles, door panels, footwells), multi-color status indicators, decorative LED strips, and architectural color-tunable fixtures. The integrated diagnostics meet automotive OEM requirements for fault reporting via the LIN bus, supporting ASIL-aware system architectures. When designing with this part, ensure the thermal pad is soldered to at least 50 mm² of copper pour to keep junction temperature below 150 °C at full 51.5 mA on all three channels simultaneously. Because the device is a linear current sink, the input supply must be sized so that the worst-case VLED + VSAT drop remains within the 5.5 V minimum supply. This page synthesizes distributor pricing, drop-in LIN-RGB-driver alternatives, and practical thermal/diagnostic design notes not consolidated in the manufacturer datasheet alone.
TLD5097EPXUMA1 - 45V Multi-Topology LED DC-DC Controller | Infineon
The Infineon TLD5097EPXUMA1 is a multi-topology DC-DC LED boost/buck controller IC with 4.5V to 45V input range, 100-500 kHz switching frequency, and 90 mA gate drive capability, housed in a 14-pin PG-TSDSO-14 exposed-pad package. It supports Boost, Buck, Buck-Boost, SEPIC, and Flyback converter topologies by external component selection. An LED driver controller is a current-regulating power management IC that drives an external MOSFET switch to deliver precisely controlled current to an LED string. It sits in the broader hierarchy of power management ICs, providing constant-current regulation that overcomes LED forward-voltage variation due to temperature and binning. Unlike fixed-mode regulators, the TLD5097EPXUMA1's adjustable topology enables both step-up (Boost) and step-down (Buck) operation from a single part. Key features include analog and PWM dimming inputs, integrated protection (over-current, over-voltage, over-temperature, short-circuit, open-LED detection), and 3.3% current tolerance. The 500 kHz maximum switching frequency allows small external inductors and capacitors, while the exposed thermal pad supports up to 1.5 W dissipation without a dedicated heatsink. The device uses a peak-current-mode control architecture with slope compensation, providing cycle-by-cycle current limiting and inherent input-voltage feed-forward. The wide 4.5-45V input range makes it suitable for automotive 12V/24V bus systems, industrial 24V supplies, and high-voltage LED strings. The LITIX Power family designation indicates compliance with Infineon's automotive-grade LED driver portfolio. Typical applications include automotive daytime running lights (DRL), front and rear lighting, industrial LED panel backlighting, signage, architectural lighting, and emergency lighting. The multi-topology flexibility allows one part number to serve multiple product variants. When designing with this part, pay attention to the gate-drive output current of 90 mA, which limits switching MOSFET selection to logic-level parts with low total gate charge. Use 1% tolerance sense resistors for accurate LED current regulation across temperature. This page synthesizes distributor pricing, drop-in same-family alternatives (TLD5097EL, TLD21313EPXUMA1), and practical design notes not aggregated in the manufacturer datasheet.
TLD5098EPXUMA1 - 45V Multi-Topology LED Controller | Infineon
The Infineon TLD5098EPXUMA1 is a DC-DC multi-topology LED controller IC from Infineon's LITIX Power family, supporting Boost, Buck, Buck-Boost, SEPIC, and Flyback configurations through external component changes. The device accepts a wide 4.5V to 45V input supply range, integrates one 90 mA DC-DC controller output channel, and supports both analog and PWM dimming for LED applications in the PG-TSDSO-14 (TSSOP-14 with exposed pad) package. According to the Infineon TLD5098EP product page, the controller operates at switching frequencies between 100 kHz and 500 kHz and is engineered for high-current LED strings in automotive exterior lighting. What is a multi-topology LED controller? A multi-topology LED controller is a power-management IC whose external MOSFET, inductor, diode, and capacitor selection determines which switching-converter topology (Boost, Buck, Buck-Boost, SEPIC, or Flyback) is realized on the PCB. By reconfiguring the passives around the same controller silicon, designers cover high-side LED driving, low-side LED driving, and battery-fed constant-current applications without changing ICs. The TLD5098EP belongs to the broader LITIX Power linear and switching LED-driver family from Infineon and sits inside the power-management IC category used in automotive and industrial solid-state lighting. Key features of the TLD5098EPXUMA1 include adjustable switching frequency from 100 kHz to 500 kHz, integrated protection features (open-LED, shorted-LED, over-temperature, and input undervoltage), 4.5V to 45V wide input supply, 5V internal reference, and support for both analog (variable current via VSET pin) and PWM dimming (digital duty cycle control). The exposed-pad PG-TSDSO-14 package improves thermal dissipation for sustained high-current LED drive stages in headlamp and daytime-running-light modules. The architecture combines a current-mode PWM controller, an internal 5V regulator, gate driver for an external N-channel MOSFET, and a comprehensive fault-detection block. Designers select the external MOSFET, inductor, and sense resistor to scale output current up to several amperes, while the IC handles closed-loop regulation, soft-start, and protection sequencing. Typical applications include automotive LED headlights, daytime running lights, turn indicators, fog lamps, signal and interior lighting, as well as industrial and architectural LED drivers and emergency lighting requiring a wide-input multi-topology constant-current source. When designing with the TLD5098EPXUMA1, choose the topology (Boost, Buck, Buck-Boost, SEPIC, Flyback) by selecting external components based on the LED string voltage vs battery/bus voltage, ensure the exposed pad is soldered to a sufficient copper pour for thermal relief, and validate protection thresholds against worst-case fault conditions. This page synthesizes distributor pricing, drop-in alternatives from the LITIX Power family, and practical design notes not found in the manufacturer datasheet.