Drivers de LED
Produtos (130)
TPS92510DGQR - 1.5A 60V Buck LED Driver | Texas Instruments
The Texas Instruments TPS92510DGQR is a 1.5-A constant-current, step-down (buck) LED driver IC with an integrated 200-mΩ high-side MOSFET, packaged in a 10-pin HVSSOP (DGQ) PowerPAD. It accepts input voltages from 3.5 V to 60 V and uses peak current-mode control with a tight-tolerance, 200-mV internal reference voltage for accurate LED current sensing while minimizing power dissipation in the current-sense resistor. An LED driver IC is a specialized power-management device that regulates current rather than voltage to a string of light-emitting diodes. LED drivers typically belong to the broader category of switching converters (DC-DC regulators), where buck (step-down) topology is preferred for high-brightness LEDs when the input bus voltage exceeds the forward-voltage stack. Inside the TPS92510 family, the part supports analog and PWM dimming via a dedicated PWMIN pin, plus an integrated LED thermal foldback function that automatically reduces current as the LED array temperature rises, protecting the load without external thermistor circuits. Key features include ±3% LED current accuracy over the operating range, 100-kHz to 2.5-MHz adjustable switching frequency, dedicated PWM dimming input, and thermal-foldback input for direct NTC/PWM interface. Internal protections include cycle-by-cycle current limit, overtemperature shutdown, and undervoltage lockout. The exposed thermal pad (PowerPAD) keeps θJA low for a small-footprint MSOP package, simplifying single-layer PCB layouts. The TPS92510 uses peak current-mode control with an internal 200-mV reference, allowing a small external sense resistor that keeps conduction loss below 5% in typical 350-mA to 700-mA strings. The integrated 200-mΩ high-side MOSFET handles up to 1.5 A of peak switch current and supports continuous conduction mode at high duty cycles. A high-side sense scheme rejects ground-borne noise that would otherwise degrade current accuracy in long LED cables. Typical applications include architectural and commercial LED lighting, MR16/AR111 retrofit lamps, automotive interior/exterior lighting, signage and display backlighting, and emergency/portable lighting. The wide 60-V input tolerance also supports industrial 24-V/48-V nominal rails directly. When designing with this device, choose the inductor so that the converter operates in continuous conduction at the minimum expected LED current, and route the thermal pad to a 1-square-inch copper pour to keep junction temperature well below the 150 °C thermal shutdown threshold. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
TPS92513HVDGQR - 65V 1.5A Buck LED Driver HVSSOP-10 | TI
The Texas Instruments TPS92513HVDGQR is a 65-V, 1.5-A step-down (buck) LED driver with an integrated N-channel MOSFET, housed in a 10-pin HVSSOP (DGQ) PowerPAD package. It uses analog current adjustment via an external sense resistor and supports both analog and PWM dimming for high-current LED strings. The wide 4.5 V to 65 V input range allows direct connection to 12 V and 24 V nominal buses as well as industrial 48 V rails, while the integrated 200 mOhm MOSFET simplifies the BOM and enables high step-down ratios in compact PCB areas. A buck LED driver is a switch-mode DC-DC converter that regulates the current through an LED string rather than the voltage across it, which provides uniform brightness regardless of forward-voltage variation between LEDs. Within the broader power-management IC (PMIC) hierarchy, the TPS92513HV sits in the LED-driver category, which is itself a subset of switching regulators alongside buck, boost, and buck-boost converters optimized for light-load efficiency. Key features include cycle-by-cycle overcurrent protection, thermal shutdown, an enable/shutdown pin, an analog adjust (ADJ) input for current programming, and a PWM dim input. The peak-current-mode control topology yields good line and load regulation and supports user-selectable switching frequencies via an external resistor. The HVSSOP-10 PowerPAD package exposes the die ground pad for low thermal resistance (about 45 C/W on a standard 2 oz. 4-layer board), which keeps junction temperatures in check at full 1.5 A output. Designers can also synchronize the device to an external clock for EMI-sensitive applications. Typical applications include architectural and commercial LED lighting, automotive interior and exterior LED drivers, industrial signage, emergency lighting, and 24 V track-lighting fixtures. The 65-V rating gives substantial transient headroom on 24 V industrial buses where load-dump-style surges are common. The wide VIN range also supports daisy-chained LED luminaires powered from a single high-voltage rail. When laying out the PCB, place the input ceramic bypass, the bootstrap capacitor, and the freewheeling Schottky diode as close to the IC as possible to minimize parasitic loop inductance. The exposed pad must be soldered to a copper pour spanning multiple thermal vias to keep junction temperatures within the 150 C thermal-shutdown limit during continuous 1.5 A operation.
TPS92515HVQDGQRQ1 - 65V 2A Buck LED Driver, AEC-Q100 | Texas Instruments
The Texas Instruments TPS92515HVQDGQRQ1 is a 65-V automotive 2-A shunt-PWM dimmable LED driver integrating an N-channel MOSFET, high-side current sense, and shunt PWM dimming circuitry, housed in a thermally-enhanced 10-pin HVSSOP (DGQ) PowerPAD package. It is designed for high-brightness LED lighting applications where efficiency, high bandwidth, PWM and/or analog dimming, and small PCB area are important. An LED driver is a power-management integrated circuit that regulates current through one or more LED strings to maintain consistent luminance regardless of input voltage, LED forward-voltage variation, or temperature. LED drivers sit hierarchically between DC-DC converters (broader switching-power category) and discrete linear current regulators; the buck (step-down) topology used in the TPS92515HV-Q1 family is the most common for high-current, moderate-to-high input-voltage strings because it delivers high efficiency (typically >90 percent) without the heat dissipation of linear regulators. Key features include a 4.5-V to 65-V operational input range, integrated 200-mOhm N-channel FET, constant-off-time peak-current control, analog and shunt-PWM dimming capability, and AEC-Q100 Grade 1 qualification (operating from -40C to +125C). The HVSSOP-10 PowerPAD package exposes a thermal pad that lowers junction-to-ambient resistance (theta_JA approximately 50 C/W on a 4-layer JEDEC board), enabling 2-A continuous LED current without an external heatsink in properly laid-out designs. The high-side current-sense scheme eliminates the need for a ground-side shunt and avoids ground-loop noise coupling in long LED-cable harnesses. The device uses constant-off-time peak-current control with a simple external RC network to program switching frequency, and the integrated FET removes a major source of layout-dependent ringing and EMI. Current calibration trims the nominal LED current at a single reference point, reducing string-to-string brightness mismatch that would otherwise require hand-binning. Typical applications include automotive headlamps, daytime running lights, rear combination lamps, and turn signals, plus industrial high-bay lighting and architectural fixtures operating from 12-V or 24-V buses. Industrial LED signage, machine-vision illumination, and emergency-vehicle light bars are additional high-volume use cases. When VIN is above the LED string forward voltage by only a few volts, the driver remains efficient; when VIN is significantly higher, the duty cycle shrinks and switching losses dominate, so thermal layout becomes critical.
TPS92515QDGQRQ1 - 42V 2A Automotive LED Driver | Texas Instruments
The Texas Instruments TPS92515QDGQRQ1 is a 42-V, 2-A automotive-grade buck LED driver with an integrated N-channel MOSFET, high-side current sense, and shunt FET PWM dimming capability, packaged in a 10-pin HVSSOP (DGQ) with PowerPAD. It is qualified to AEC-Q100 Grade 1 and supports analog plus PWM dimming for precise brightness control in headlamp, daytime running light, and interior lighting systems. What is a buck LED driver? A buck (step-down) LED driver is a switching DC-DC converter that regulates current through a string of LEDs by chopping the input voltage down to the LED forward voltage plus headroom. Buck LED drivers sit inside the broader hierarchy: LED driver -> lighting IC -> power management IC -> semiconductor. Compared with linear LED drivers they achieve much higher efficiency at large VIN-VOUT deltas, which is critical for automotive 12-V/24-V battery rails. Key features include a 42-V absolute maximum input (4.5-V to 42-V operating range), 2-A continuous switch current, integrated 250-mOhm N-channel FET, high-side current sensing for ground-referenced LED cathodes, 100:1 analog dimming range, and 1000:1 PWM dimming range via an external shunt FET. Cycle-by-cycle current limit and thermal shutdown provide fault protection. According to TI's product page, the HVSSOP-10 PowerPAD delivers a junction-to-ambient thermal resistance of approximately 47 C/W on a standard JEDEC 4-layer board. The TPS92515QDGQRQ1 uses peak-current-mode control with internal slope compensation to maintain stability across the full duty-cycle range. The high-side sense scheme eliminates the need for a ground-side shunt, simplifying PCB routing and improving efficiency by 2-5% versus low-side sense designs. The shunt-FET PWM dimming input permits >1 kHz dimming frequencies without audible noise. Typical applications include automotive LED headlights, fog lamps, daytime running lights, rear combination lamps, and architectural or industrial lighting that requires AEC-Q100 reliability. The wide VIN range also supports industrial 24-V nominal bus systems. When designing with this device, allocate at least 1 square cm of copper pour under the PowerPAD and use low-ESR ceramic input capacitors to handle the buck-switching ripple. Verify that the LED string forward voltage leaves sufficient headroom (typically >1.5 V) for current-sense accuracy at minimum VIN. This page synthesizes distributor pricing, AEC-Q100 cross-references, and drop-in alternatives compiled from TI's part details page and authorized distributor listings - context you will not find in the standalone datasheet.
TPS92630QPWPRQ1 - 3-Ch 150mA Linear LED Driver, AEC-Q100 | TI
The Texas Instruments TPS92630QPWPRQ1 is an automotive-grade, three-channel linear LED driver with analog and PWM dimming, delivering up to 150 mA per channel in a 16-pin HTSSOP (PWP) package with PowerPAD exposed pad. It operates across 9 V to 18 V nominal supply (with transient tolerance to 40 V) and integrates full diagnostics and protection features, including open-LED, short-to-GND, short-to-VBAT, and thermal shutdown. What is a linear LED driver? A linear LED driver is a constant-current regulator that places the LED string in series with a pass transistor whose conduction is modulated to maintain a programmed current. Unlike switching drivers, linear regulators introduce no EMI and no switching ripple, which makes them ideal for noise-sensitive analog lighting and for meeting CISPR 25 EMI limits in automotive modules. The TPS92630-Q1 belongs to the broader power management IC family (LED driver -> constant-current driver -> lighting driver -> PMIC) and is optimized for medium-power automotive lighting subsystems. Key features include a 150 mA per-channel current set by a single external sense resistor, 1000:1 analog dimming range, 1000:1 PWM dimming at 200 Hz, individual channel enable/diagnostic pins, and a fault output (FAULT) that asserts on any protection event. The HTSSOP-16 PowerPAD package achieves a theta_JA near 38 C/W on a 4-layer JEDEC JESD51 board, enabling compact PCB layouts without an external heatsink at typical 60-100 mA operating currents. The TPS92630-Q1 uses three independent linear current sinks, each with its own diagnostic comparator and PWM latch. A shared reference and bias block minimize channel-to-channel mismatch. Internal slope compensation on the analog dimming input ensures monotonic response across the 1000:1 range and prevents current crowding in multi-string arrays. Typical applications include automotive rear combination lamps, daytime running lights, interior ambient lighting, and ADAS indicator LEDs. The wide 4.5 V to 40 V transient tolerance also makes it robust against load-dump events on 12 V automotive buses. When designing with this part, place the 1 uF VIN bypass capacitor close to the IC and route the PowerPAD copper pour to a low-impedance ground plane. Verify thermal performance under worst-case VIN and full-current operation, and use the FAULT pin for system-level diagnostics in compliance with ISO 26262 functional-safety requirements. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
TPS92691 - Multi-Topology LED Driver | Texas Instruments
The Texas Instruments TPS92691 is a versatile multi-topology LED driver controller designed for step-up (boost), step-down (buck), SEPIC, and flyback topologies. It integrates a rail-to-rail current sense amplifier, enabling accurate LED current regulation across a wide range of applications. The device operates with a fixed-frequency peak current mode control scheme, with programmable switching frequency, slope compensation, and soft-start timing. It supports both analog and PWM dimming, making it suitable for automotive, industrial, and general lighting systems. An LED driver is a power management IC that regulates the current flowing through one or more LEDs, ensuring consistent brightness and protecting the LEDs from current surges. The TPS92691 belongs to the family of switching LED drivers, which use inductive or capacitive energy storage to efficiently convert input voltage to the required LED current. This controller sits between the power source and the LED string, providing closed-loop regulation and dimming capabilities. Key features of the TPS92691 include a wide input voltage range, programmable switching frequency up to 1 MHz, and a rail-to-rail current sense amplifier that allows low-side or high-side sensing. The device also features an internal 10-µA soft-start current source, an external soft-start capacitor for controlled startup, and a COMP pin that is clamped to the SS pin until LED current nears regulation. These features enable smooth startup and stable operation across varying load conditions. The TPS92691 is available in a 16-pin HTSSOP (PWP) package, which provides a compact footprint with exposed thermal pad for improved heat dissipation. The device is designed for high-efficiency operation, with typical efficiencies above 90% in boost and buck configurations. It also includes protection features such as thermal shutdown and overcurrent protection, enhancing system reliability. Typical applications include automotive LED headlights, daytime running lights, industrial LED lighting, and backlighting for displays. The device's flexibility in topology and dimming methods makes it a preferred choice for designers seeking a single controller for multiple LED driver designs. When designing with the TPS92691, it is important to select appropriate external components such as the inductor, MOSFET, and sense resistor to meet the desired output current and efficiency. Proper PCB layout, including minimizing parasitic inductance and ensuring adequate thermal management, is critical for optimal performance.
TPS92691-Q1 - 65V AEC-Q100 LED Driver Controller | TI
The Texas Instruments TPS92691-Q1 (TPS92691QPWPTQ1) is an automotive-qualified multi-topology LED driver controller supporting boost, buck, buck-boost, SEPIC, Cuk, and flyback topologies. It operates from a wide 4.5 V to 65 V input and integrates a 65-V rail-to-rail current sense amplifier with better than ±3% LED current accuracy over a junction temperature range of +25°C to +140°C and a 0 V to 60 V output common-mode range, enabling both high-side and low-side current sensing. The device is supplied in a 16-pin HTSSOP (PWP) package. An LED driver controller is a power management IC that regulates current through LED strings using a switching regulator architecture. Within the power management IC hierarchy, it sits between generic DC-DC controllers and dedicated constant-current LED drivers, adding dimming control, fault protection, and LED-specific features. Peak current mode control is a control technique in which the switch current is sensed and compared against an error-amplifier-derived threshold on a cycle-by-cycle basis, giving inherent cycle limiting and simple loop compensation. Key features include fixed-frequency peak current mode control with programmable switching frequency, programmable slope compensation for stable operation at duty cycles above 50%, programmable soft-start timing to limit inrush current, and a dedicated PWM dimming input that linearly varies LED brightness by modulating the duty cycle of the voltage applied to the PWM pin. Analog dimming is also supported, allowing flexible brightness control in automotive lighting systems. Architecturally, the integrated high-voltage current sense amplifier is the differentiating block: by tolerating a 60 V common-mode input, it removes the need for a dedicated low-side sense resistor path in high-rail strings and simplifies short-circuit diagnostics. The controller generates gate drive for an external MOSFET, so output power is set by external components rather than IC limits. Typical applications include automotive headlights, daytime running lights (DRL), fog lamps, LED backlighting, and industrial lighting driven from 12 V, 24 V, or 48 V automotive and industrial buses. Design consideration: choose the switching frequency and slope compensation together - higher frequency shrinks the inductor but increases switching loss; slope compensation must be set based on the sensed inductor current downslope to avoid subharmonic oscillation at duty cycles above 50%.
TPS92692QPWPRQ1 - AEC-Q100 Boost/Step-Down LED Controller | TI
The Texas Instruments TPS92692QPWPRQ1 is a high-accuracy, peak-current-mode LED controller designed to support step-up (boost) and step-down (buck) LED driver topologies in automotive lighting applications. Housed in a 20-pin HTSSOP (PWP) package with PowerPAD exposed thermal pad, the device integrates a rail-to-rail current sense amplifier, an internal PWM dimming generator, and spread-spectrum frequency modulation for improved EMI compliance. According to the TI datasheet, the switching frequency is programmable from 80 kHz to 800 kHz and the output voltage range extends from 3 V to 65 V, enabling both low-voltage battery-fed and high-voltage multi-LED-string architectures. A peak-current-mode LED controller is a power-supply control IC that regulates inductor current on a cycle-by-cycle basis to maintain a precisely measured LED load current. This controller class sits within the broader hierarchy of DC-DC switching controllers -> LED drivers -> power management ICs -> automotive-qualified analog semiconductors. Peak-current-mode control offers inherent cycle-by-cycle overcurrent protection and simplified loop compensation compared to voltage-mode control, making it well suited to the variable LED loads seen in adaptive driving beam and matrix-LED headlamp systems. Key features of the TPS92692QPWPRQ1 include analog and PWM dimming capability, high-side current sensing up to ±700 mV full-scale, an internal PWM generator that allows dimming without an external MCU, and spread-spectrum frequency modulation that reduces peak EMI emissions to ease CISPR 25 Class 5 compliance. The device supports both boost (step-up) and buck (step-down) operation from the same controller, allowing a single BOM to cover high-beam, low-beam, daytime running lights, and rear-lighting topologies. The HTSSOP-20 PowerPad package reduces theta_JA and supports sustained operation at high switching currents in space-constrained underhood environments. Architecturally, the device combines a precision transconductance error amplifier, a high-side current sense input (HI-SNS/LO-SNS), a programmable oscillator with spread-spectrum dithering, a PWM dimming latch, and a gate driver capable of driving external MOSFETs. This partitioning enables a designer to size the inductor, MOSFETs, and sense resistor for the specific string voltage and current without controller-side limitations. The internal soft-start and fault timer (with thermal shutdown, LED open/short detection, and fault output) simplify ASIL-relevant safety analysis for OEM headlamp modules. Typical applications include automotive front lighting (high beam, low beam, DRL), matrix-LED adaptive driving beam modules, rear lighting (tail, brake, turn), and high-current industrial LED strings. The AEC-Q100 Grade 1 rating makes it suitable for underhood operation across -40 °C to +125 °C ambient. When designing with this device, pay attention to PCB layout of the current-sense traces (Kelvin connection required to the sense resistor) and to thermal management of the PowerPAD - sustained boost operation at high duty cycle can dissipate several watts.
XDPL8105XUMA1 - Digital Flyback LED Driver IC | Infineon
The Infineon XDPL8105XUMA1 is a digital single-stage flyback controller IC with high power factor and primary-side regulation designed for cost-effective constant-current LED drivers. It operates from 100-277 VAC input with >90% efficiency, supports a switching frequency range of 3 kHz to 180 kHz, and is housed in an 8-pin PG-DSO-8 (SOIC-8) surface-mount package. The XDP digital platform combines primary-side regulation with active PFC, eliminating the need for an optocoupler and secondary-side feedback components. A flyback controller is a switch-mode power supply (SMPS) topology regulator that stores energy in the primary winding of a coupled inductor during the ON-time of the switch and delivers it to the secondary winding during the OFF-time. Flyback controllers fall under the broader category of AC-DC converters, which in turn belong to power management integrated circuits. Single-stage flyback topologies are widely used in LED lighting because they integrate power factor correction (PFC) and output current regulation into one power stage, reducing BOM cost and PCB area versus two-stage solutions. Key features of the XDPL8105 include integrated digital control state machine, primary-side constant-current regulation without optocoupler, >0.9 power factor at full load, adaptive dimming curve support (linear, quadratic, exponential), flicker-free operation, and built-in protection features (over-temperature, over-current, over-voltage, input under-voltage). The device supports both analog and digital dimming interfaces, making it compatible with industry-standard 0-10V and DALI control gear when paired with external interface circuitry. From an architecture standpoint, the XDPL8105 uses Infineon's XDP digital signal processor hardware engine, which executes parameter-set firmware that can be customized via the XDPL8105 graphical configuration tool. This digital core measures the primary-side current and auxiliary winding voltage to compute the secondary-side output current, achieving regulation accuracy typically within ±2% without secondary-side sensing. The 8-pin package exposes VIN, GND, CS (current sense), AUX (auxiliary winding), DRV (gate driver), DIM (dimming input), VCC, and NC pins. Typical applications for the XDPL8105 include cost-optimized LED downlights, LED panels, LED troffers, outdoor luminaires, and isolated offline LED drivers in the 5-100 W output power range. It is also suitable for flicker-free retrofit bulbs and smart-lighting front-end converters where high power factor compliance (EN 61000-3-2 Class C) is required. When designing with the XDPL8105, attention must be paid to the transformer design (leakage inductance, primary inductance, turns ratio), the snubber network selection, and the CS resistor value. The Infineon reference design RDR-704 is recommended as the starting point for any new LED driver layout. This page synthesizes distributor pricing, parametric alternatives, and practical design notes not found in the Infineon datasheet, helping engineers select, source, and implement the XDPL8105 in production LED luminaire designs.
XDPL8219XUMA1 - Flyback PFC LED Driver Controller | Infineon
The Infineon XDPL8219XUMA1 is a digital flyback controller IC with integrated Power Factor Correction (PFC), housed in a PG-DSO-8-41 package and designed for constant-voltage LED lighting and AC/DC supplies. It delivers <100 mW standby power consumption, PF >0.9 across the universal AC input range (90 Vrms to 305 Vrms), and THD <10% for enhanced harmonic compliance. The device targets Secondary-Side Regulated (SSR) constant-voltage LED driver topologies used in luminaires up to 100 mA output current capability with built-in no-dimming operation. A flyback controller is a switching power-supply control IC that regulates an isolated DC output by switching a primary-side MOSFET and using a transformer to galvanically isolate the load. Constant-voltage (CV) flyback LED drivers add an active PFC stage that shapes the input current to follow the line voltage, achieving high PF and low THD as mandated by regulatory standards such as IEC 61000-3-2. The XDPL8219 integrates PFC control directly into the flyback controller, eliminating a separate PFC stage and simplifying the BOM for cost-sensitive LED lighting designs. Key features of the XDPL8219 include an integrated 600 V high-voltage startup cell that removes the need for an external startup resistor network, secondary-side regulated constant-voltage output via digital control, and enhanced THD/PF correction algorithms that operate across a wide load range. A UART-based digital interface enables parameter tuning, in-system firmware updates, and telemetry, supporting rapid design iteration. The combination of digital control and analog PWM peripherals yields high efficiency, low standby power, and robust protection against abnormal line conditions. Technically, the controller uses Infineon's XDP (eXtremely Dense Platform) mixed-signal architecture with an embedded 8-bit core, on-chip digital compensation loops, and adaptive valley-skipping modulation for efficiency optimization at light loads. The device supports DC input voltages from 127 V to 431 V (post-rectified high-voltage DC bus), making it suitable for both AC mains-powered luminaires and DC-bus lighting such as solar or battery-fed installations. Built-in protections include over-temperature, over-current, over-voltage, and brown-out detection. Typical applications include indoor LED downlights, panel lights, ceiling luminaires, smart-home lighting fixtures, and constant-voltage AC/DC adapters where high PF, low THD, and low standby are required. The device is also used in DC-bus industrial lighting such as 24 V or 48 V architectural systems. For dimmable designs, a primary-side controlled dimming variant may be considered. When designing with the XDPL8219, pay close attention to the primary MOSFET voltage rating versus the reflected output voltage and the leakage inductance spike. The PG-DSO-8-41 package requires proper thermal copper-pour design to dissipate controller losses. Use Infineon's reference design files and the XDPL8219 design guide for transformer sizing, snubber selection, and feedback loop tuning. This page synthesizes distributor pricing, cross-brand availability, and practical design notes beyond the manufacturer datasheet.