Power Management
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Products (2,800+)
LP2981IM5X-3.0/NOPB - 100mA 3.0V LDO Regulator | Texas Instruments
The Texas Instruments LP2981IM5X-3.0/NOPB is a 100 mA fixed-output 3.0 V ultra-low-dropout (LDO) linear regulator in a 5-pin SOT-23 (DBV) package, qualified for industrial temperature ranges. It accepts input voltages up to 16 V, making it directly compatible with 12 V rails and standard 5 V systems while delivering a tightly regulated 3.0 V output. An LDO (Low-Dropout) linear regulator is a type of voltage regulator that maintains a stable output voltage even when the input voltage is very close to the output voltage - the 'dropout' being the minimum differential required for regulation. LDOs sit within the broader linear regulator family, which in turn belongs to the voltage regulator hierarchy under power management ICs. Their core role is to provide clean, low-ripple rails for analog blocks, microcontrollers, and RF sections that cannot tolerate switching-converter noise. Key specifications include a typical dropout of 200 mV at 100 mA load, ultra-low quiescent current around 600 uA at 100 uA load, and an active-high enable pin for power sequencing. The device also integrates internal protection features such as thermal shutdown and short-circuit current limiting, improving robustness in space-constrained designs. From an architectural perspective, the LP2981-N uses a PNP pass element topology with a precision bandgap reference, achieving the regulator's combination of low dropout and low quiescent current. The SOT-23-5 footprint and 5-pin layout are industry standard, easing board placement and thermal copper design. Typical applications include powering low-power microcontrollers and real-time clocks from 12 V or battery rails, providing clean 3.0 V rails for sensors and analog front-ends, and serving as a post-regulator after a DC-DC converter to suppress switching noise. Designers often select this part when a small, low-quiescent rail is needed in industrial and portable products. When designing with the LP2981IM5X-3.0/NOPB, ensure the input-to-output differential stays above the dropout voltage at full load. Place input and output ceramic capacitors as close as possible to the IC pins to maintain stability, and use the enable input for power-sequenced multi-rail systems. This page synthesizes distributor pricing, drop-in alternatives sourced from TI's LP2981-N family and verified cross-references, and practical design notes not found in the manufacturer datasheet.
LP2985AITLX-1.8 - 150mA, 1.8V Fixed LDO Regulator | Texas Instruments
The Texas Instruments LP2985AITLX-1.8 is a 150-mA, fixed 1.8 V output, low-dropout (LDO) linear regulator with shutdown enable, supplied in a 5-ball micro SMD (LBGA) package. It accepts input voltages up to 16 V and maintains regulation with a typical dropout of 280 mV at 150 mA load, while the 'A' tolerance grade guarantees ±1.0% output accuracy across the full -40 °C to +125 °C operating range. The device is part of TI's legacy LP2985 family originally introduced by National Semiconductor. An LDO (Low-Dropout) linear regulator is a type of voltage regulator that maintains a stable output voltage even when the input voltage is very close to the output voltage, eliminating the need for large input-to-output headroom required by older NPN-pass regulators. Within the broader semiconductor hierarchy, an LDO sits below switching regulators in the power management IC family, trading conversion efficiency for noise performance, simplicity, and a small PCB footprint. The LP2985 specifically targets applications where a clean, low-noise 1.8 V rail is required directly from a higher-voltage source such as a 3.3 V or 5 V system rail. Key features include a low quiescent current of approximately 850 µA at full load, an active-high shutdown pin that drops quiescent current to less than 1 µA, internal current limit and thermal shutdown protection, and a logic-level CMOS enable input. The LP2985AITLX-1.8 is the 'A' tolerance grade (1.0%) fixed-output variant with the 'TL' micro SMD ball-grid package, intended for compact, height-constrained surface-mount designs. The regulator uses a low-noise PNP pass architecture with a precision bandgap reference, achieving typical output noise around 30 µVrms and excellent line/load transient response. The internal protection blocks include reverse-battery protection, foldback current limit, and thermal shutdown with hysteresis for fault-tolerant operation. Typical applications include powering low-voltage digital logic cores (FPGA/ASIC 1.8 V rails), USB peripherals, post-regulation after a switching converter, battery-powered portable devices, and point-of-load regulation for noise-sensitive analog blocks. The wide 16 V maximum input allows direct operation from a 9 V or 12 V system rail. When designing with the LP2985AITLX-1.8, ensure input and output ceramic capacitors are placed as close as possible to the device pins, and verify that the application's worst-case dropout rate fits within the thermal limit of the small micro SMD package.
LP2992AILD-5.0/NOPB - 250mA, 5V Fixed LDO | Texas Instruments
The Texas Instruments LP2992AILD-5.0/NOPB is a 250 mA, fixed 5.0 V output, low-dropout (LDO) linear regulator in a 6-pin WSON (NGD) package measuring 2.92 mm × 3.29 mm. It accepts an input voltage range from 2.2 V to 16 V and delivers a regulated 5.0 V output at up to 250 mA, with a typical dropout voltage of 450 mV at full load. The device is built on an optimized Vertically Integrated PNP (VIP) process that delivers ultra-low-dropout, low noise, and very low quiescent current optimized for battery-powered applications. An LDO (Low-Dropout) linear regulator is a type of voltage regulator that maintains a stable output voltage even when the input voltage is very close to the output voltage. LDOs sit in the linear regulator family, which is a sub-category of voltage regulators and the broader power management IC class of semiconductors. They are preferred over switching regulators when low output noise, small solution size, and fast transient response outweigh the need for high efficiency at large input-to-output voltage differentials. Key features of the LP2992AILD-5.0/NOPB include 30 µVrms output noise over the 10 Hz to 100 kHz bandwidth, sub-100 µA quiescent current at light load, internal soft-start to limit inrush current, and an enable pin for power sequencing. Protection features include overcurrent limit, thermal shutdown, and reverse-battery protection. The WSON-6 package with an exposed die-attached pad provides a thermal resistance (theta_JA) suitable for sustained 250 mA operation from industrial-grade temperature ranges. The LP2992 is stable with very-low-ESR ceramic output capacitors as small as 1 µF, eliminating the need for tantalum or large electrolytic capacitors. Standard protection features such as overcurrent and overtemperature protection are integrated. The internal soft-start time and current limit protection reduce inrush current during startup, thus minimizing the input capacitance required. Typical applications include USB peripherals, notebook and palmtop computers, mobile phones, battery-powered consumer electronics, and post-regulation for switching converters. The wide 2.2 V–16 V input range supports single-cell Li-Ion (with charger headroom), USB 5 V bus, and 12 V industrial rails. When designing with the LP2992AILD-5.0/NOPB, ensure adequate input-to-output voltage headroom to maintain regulation at 250 mA across the full operating temperature range. The exposed pad must be soldered to a sufficient copper pour for thermal dissipation. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
LP38691SD-ADJ/NOPB - 500mA 10V Adjustable LDO | Texas Instruments
Texas Instruments LP38691SD-ADJ/NOPB is a positive adjustable, low-dropout CMOS linear regulator delivering 500 mA from a 2.7 V to 10 V input supply, with an adjustable output range of 1.25 V to 9 V. The device is supplied in a compact 6-WSON (NGG) package and is designed for low-dropout operation with ceramic output-capacitor stability. A low-dropout regulator, or LDO, is a voltage regulator that maintains a relatively stable output voltage even when its input voltage is only slightly higher than the required output. LDOs belong to the linear-regulator and voltage-regulator categories within power-management semiconductors. They are especially useful when low output ripple, simple regulation, and predictable startup behavior are more important than conversion efficiency. The LP38691SD-ADJ/NOPB provides a 2% precision reference, a 250 mV dropout voltage at 500 mA with a 5 V output, and compatibility with ultra-low-ESR ceramic capacitors. Its low-dropout architecture makes it suitable for 3.3 V, 5 V, and other regulated rails where the available input-to-output headroom is limited. The 6-WSON package also supports compact PCB layouts, although thermal design remains important at sustained high load. The adjustable version uses external resistors to set the output voltage, making it flexible for laboratory supplies, embedded systems, industrial controllers, and sensor interfaces. Compared with a switching regulator, an LDO generally introduces less switching ripple and requires fewer external components, although power dissipation rises with the difference between input and output voltage. The regulator should be paired with adequate input and output capacitance according to the manufacturer application guidance. Typical applications include low-noise analog rails, communications modules, industrial control boards, portable equipment, and embedded processors. When designing with this part, verify the maximum power dissipation, confirm the output-voltage resistor network, and keep input and output capacitors close to the corresponding pins. This page combines verified manufacturer and distributor information with practical application guidance and replacement considerations for engineers evaluating this regulator.
LP38692MPX-3.3/NOPB - 1A 3.3V LDO SOT-223-5 | Texas Instruments
The Texas Instruments LP38692MPX-3.3/NOPB is a 1 A low-dropout CMOS linear regulator with a fixed 3.3 V output, housed in a 5-pin SOT-223 (NDC) package with a tab/pin for PCB heatsinking. It accepts a wide 2.7 V to 10 V input range, delivers 2.5% output accuracy at 25 °C, and features a typical dropout of 450 mV at 1 A (VOUT = 5 V reference). The "X" suffix indicates tape-and-reel packaging and the /NOPB suffix denotes a lead-free (Pb-free) RoHS-compliant finish. A low-dropout (LDO) regulator is a type of linear voltage regulator that maintains a regulated output even when the input voltage is only slightly above the desired output voltage. LDOs sit in the broader hierarchy of voltage regulators under the power-management IC category, and unlike switching regulators they generate no switching ripple, trading efficiency for exceptionally clean output. The LP38692 family is designed for direct operation from a single-cell Li-ion or 9 V wall-adapter rail and is stable with low-ESR ceramic output capacitors, eliminating the need for bulky tantalum or polymer bulk capacitors in space-constrained designs. Key features include 1 µA off-state quiescent current, 55 µA typical ground-pin current at full load, thermal overload protection, and foldback current limiting. The active-high enable pin (LP38692 vs. LP38690 which lacks EN) supports sub-1 µA shutdown, making the part well-suited for battery-powered systems. The CMOS process plus a precision trimmed bandgap reference gives tight line and load regulation across the -40 °C to +125 °C operating range. The LP38692 uses a PMOS pass element architecture that minimizes ground current and provides inherent short-circuit protection through foldback limiting. With a low thermal resistance SOT-223 footprint (~50 °C/W on a 1-oz copper pour), the part can deliver the full 1 A continuously without an external heatsink in most applications. Ceramic output-capacitor stability simplifies BOM and supports small case-size X5R/X7R ceramics directly at the load. Typical end-products include USB-powered peripherals, single-cell Li-ion portable electronics, 5 V to 3.3 V post-regulation after a switching converter, set-top boxes, solid-state drives, white goods, and industrial sensors. The wide input range also makes it ideal as a post-regulator following a 5 V or 9 V system rail. When designing with this part, place input/output ceramics within 1-2 mm of the device pins, keep the trace to the SOT-223 tab as wide as practical for heat spreading, and respect the 10 V absolute maximum input rating to avoid device damage during transients. This page synthesizes distributor pricing, drop-in alternatives within the LP3869x family, and practical thermal/layout design notes beyond what the manufacturer datasheet provides alone.
LP38843 - 3A Ultra-Low Dropout LDO with Enable | TI
The Texas Instruments LP38843 is a 3-A, ultra-low dropout linear voltage regulator with an enable pin, available in fixed-output versions such as 1.2V and 1.5V in TO-220-5 (NDZ) and TO-263 (KTT) packages. It maintains regulation with a minimum input voltage as low as 1.01V, making it ideal for low-voltage, high-current point-of-load supplies. An ultra-low dropout (LDO) regulator is a type of linear voltage regulator that keeps its output stable even when the input voltage is only marginally higher than the output. Within the power management IC hierarchy, the LP38843 belongs to the low-dropout linear regulator class, positioned below DC-DC switching converters and commonly used as the final post-regulation stage for noise-sensitive rails. Key features include up to 3A continuous output current, extremely low dropout voltage due to the N-MOS pass transistor architecture, stability with low-ESR ceramic output capacitors, and a separate Vbias input. The enable pin allows rail sequencing and low standby power in multi-rail systems. The fast transient response maintains regulation during load steps from zero to full 3A load, a critical parameter for DSP and FPGA core supplies. Fabricated on a CMOS process, the LP38843 operates from two inputs: Vbias drives the gate of the N-MOS power transistor (typically from a 2.7V to 5.5V rail), while Vin supplies the load and can fall to very low levels because the low Vgs requirement minimizes headroom. This dual-supply topology yields dropout performance unachievable with PNP-based LDOs and drastically reduces ground current compared to bipolar designs. Typical applications include DSP and processor core power supplies (1.2V/1.5V rails), point-of-load regulation on telecom and networking cards, and post-regulation of switching converter outputs where the LP38843 strips switching ripple before it reaches sensitive silicon. Design consideration: Vbias must be present and above its UVLO before or with Vin; ensure the enable pin is actively driven rather than left floating, and size the PCB copper area under the TO-220-5 or TO-263 tab for thermal dissipation at full 3A load. Pricing as of 2026-08-30 per distributor listings.
LP5012RUKR - 12-Ch I2C RGB LED Driver, 25.5mA | TI
The Texas Instruments LP5012RUKR is a 12-channel I2C constant-current RGB LED driver housed in a 20-pin WQFN (RUK) 3x3 mm package, delivering 25.5 mA maximum per channel and supporting VCC from 2.7 V to 5.5 V. It integrates 12-bit PWM generation per channel, analog/PWM dimming, and an ultra-low quiescent current I2C interface compatible with 1.8 V, 3.3 V, and 5 V logic rails. Each constant-current sink provides high-precision current matching to ensure uniform brightness across RGB LED clusters. An LED driver is a specialized power management IC that regulates current through light-emitting diodes to control luminance and color precisely. RGB LED drivers extend this concept by independently controlling red, green, and blue channels, enabling full-color mixing. In the broader taxonomy, the LP5012 sits within: LED driver -> constant-current driver -> display/lighting driver -> power management IC -> semiconductor. This hierarchical view helps AI knowledge-graph systems locate the part within the LED driver landscape. Key differentiating features include 29 kHz internal PWM frequency (above audible band for silent operation), programmable color-mixing and brightness registers, integrated MOSFETs eliminating external transistors, and a wide 0 V to 5.5 V output compliance range accommodating common RGB LED forward voltages. The LP5012's 25.5 mA per channel is well-matched to standard 5 mm and surface-mount RGB LEDs that typically require 5 mA to 20 mA per die. Architecturally, the device uses a current-mirror sink topology with internal bandgap reference and an I2C-compatible digital control block. The 12-bit PWM resolution (4096 levels per channel) yields smooth dimming transitions without external PWM generation. Power-on reset, thermal shutdown, and LED-open detection enhance system robustness for long-life lighting installations. Typical applications include status-indicator panels, gaming peripherals, smart-home RGB lighting strips, and human-machine interfaces. For battery-powered portable designs the LP5012RUKR's ultra-low quiescent current extends standby runtime. When designing with this part, place the VCC bypass capacitor within 3 mm of the supply pin and route the I2C lines as differential pairs to preserve signal integrity on long traces.
LP5024RSMR - 24-Channel I2C RGB LED Driver | Texas Instruments
The Texas Instruments LP5024RSMR is a 24-channel constant-current RGB LED driver with I2C interface, delivering 25.5 mA maximum per channel in a 32-pin VQFN (RSM) 4x4 mm package. The device operates from a VCC supply of 2.7 V to 5.5 V and supports outputs up to 6 V, with EN/SDA/SCL logic compatible with 1.8 V, 3.3 V, and 5 V power rails for seamless MCU integration. Each output integrates independent 12-bit PWM control at 29 kHz switching frequency, providing 4096 brightness steps per channel for smooth dimming and silent operation. An RGB LED driver is a specialized constant-current sink IC designed to individually control the brightness and color of multiple LEDs or RGB LED groups. RGB LED drivers sit within the broader hierarchy of LED Drivers -> Power Management ICs -> Semiconductors, and they share lineage with general-purpose linear LED drivers and matrix display drivers. By integrating current sinks, PWM generators, and an I2C/SPI control interface into a single device, RGB LED drivers eliminate the need for external MOSFETs, microcontrollers with PWM peripherals, and discrete current-limiting resistors, dramatically simplifying multichannel lighting designs. Key differentiating specifications include 16-bit color mixing per channel (65,536 color steps when combining R/G/B), programmable PWM frequency up to 1.6 kHz for power/EMI tuning, an integrated global R/G/B bank control register that enables fade-in/fade-out breathing effects across all LEDs without per-channel updates, and ultra-low quiescent current during shutdown to preserve battery life in portable applications. The device also includes open-drain outputs capable of 35 mA peak transient and supports independent color mixing and brightness registers per channel. Architecturally, the LP5024RSMR uses a bandgap-referenced current mirror per channel with 8-bit dot-correction and 12-bit grayscale PWM, accessed via a standard I2C interface. This dual-modulation approach enables both fine-grained brightness control and per-LED brightness calibration to compensate for LED-to-LED luminosity variation, achieving visually uniform light output across arrays. Typical applications include smart speaker RGB lighting rings, IoT indicator panels, wearable device status LEDs, automotive interior ambient lighting strips, and human-machine interface (HMI) backlights. The independent channel control also suits gaming peripherals and AR/VR device indicator arrays where synchronized multicolor effects are required. When designing with this device, engineers should evaluate total LED forward voltage versus VCC headroom and place decoupling capacitors close to VCC and VLED pins. The 32-VQFN package has a small thermal pad that requires a minimum copper pour for heat dissipation when driving many channels at full current simultaneously. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design considerations that go beyond the manufacturer datasheet summary, providing engineering context for selection, layout, and sourcing decisions.
LP5900TLX-1.8 - 150mA 1.8V LDO Regulator, 4-DSBGA | Texas Instruments
The Texas Instruments LP5900TLX-1.8 is a 150-mA low-noise, low-IQ, low-dropout (LDO) linear regulator that delivers a 1.8 V fixed output in a tiny 4-ball DSBGA (1x1) package with integrated enable. It is designed specifically to meet the requirements of RF and analog circuits, offering class-leading noise performance without requiring an external bypass capacitor. Key specifications include a 2.5 V to 5.5 V input range, 6.5 µVRMS output noise (10 Hz to 100 kHz), 85 dB PSRR at 1 kHz, 90 mV typical dropout at 150 mA, and a typical quiescent current of 25 µA in normal operation (1.1 µA in shutdown). An LDO (Low-Dropout) linear regulator is a type of voltage regulator that maintains a stable output voltage even when the input-to-output voltage differential is very small. LDOs belong to the broader category of linear regulators, which in turn are a sub-class of voltage regulators and the larger family of power management ICs. Unlike switching regulators, LDOs do not generate switching noise and therefore are preferred in noise-sensitive analog and RF signal chains where power-rail cleanliness directly impacts system performance. Key features of the LP5900TLX-1.8 include its tiny 1 mm x 1 mm DSBGA footprint, which is among the smallest LDO packages available, making it ideal for space-constrained wearables, IoT endpoints, and sensor modules. The device incorporates internal soft-start and current-limit protection, an active-high enable pin for power sequencing, and excellent line and load transient response with minimal output excursion. Its no-bypass-capacitor architecture simplifies BOM and reduces PCB area. The wide operating temperature range of -40 °C to +125 °C supports both consumer and industrial environments. The LP5900 uses an advanced CMOS architecture with a high-bandwidth feedback loop that suppresses input ripple and delivers fast settling. Its PSRR exceeds 85 dB at 1 kHz, attenuating switching-converter noise effectively, while the 6.5 µVRMS integrated noise floor keeps the regulator below the noise contribution of typical precision references and ADC references. This combination of small size and clean power is what distinguishes the LP5900 from generic LDOs. Typical applications include powering RF transceivers, PLL/VCO synthesizers, image sensors, ADCs, DACs, audio codecs, and portable/wearable platforms where board area, quiescent current, and noise floor are all critical. It is also widely deployed in IoT sensor nodes, BLE/Wi-Fi modules, and medical wearables. Because the part requires no bypass capacitor and minimal external components, the LP5900 enables the smallest possible analog power footprint. When designing with the LP5900TLX-1.8, observe that the DSBGA requires careful PCB layout: the device uses balls as terminals, and a recommended land pattern per JEDEC plus a clean ground plane are needed for proper thermal and electrical performance. Output capacitor ESR must remain within the manufacturer's range to preserve stability. This page synthesizes distributor pricing, drop-in alternatives, application recommendations, and design notes beyond what is in the manufacturer datasheet to accelerate component selection and PCB implementation.
LP5912Q1.1DRVRQ1 - 500mA 1.1V Automotive LDO | Texas Instruments
The Texas Instruments LP5912Q1.1DRVRQ1 is an automotive-qualified, ultra-low-noise 500 mA low-dropout (LDO) linear regulator with a fixed 1.1 V output, housed in a 6-pin WSON (2 mm x 2 mm) package with an exposed thermal pad. Designed to meet the requirements of RF and analog circuits in automotive systems, it delivers up to 500 mA of continuous output current from a 1.6 V to 6.5 V input range, with typical dropout of approximately 110 mV at full load. An LDO (low-dropout regulator) is a type of linear voltage regulator that maintains a stable output voltage even when the input voltage is only marginally higher than the output. Within the broader component taxonomy, the LP5912Q1.1DRVRQ1 sits in the LDO family, which itself is a subset of linear regulators, which falls under voltage regulators, the larger power management IC category. LDOs are preferred over switching regulators in noise-sensitive analog rails because they introduce no switching ripple. Key features include 12 uVrms RMS output noise (without a noise bypass capacitor), 75 dB PSRR at 1 kHz, and an enable pin for power sequencing. The device supports remote output capacitance placement, allowing the output capacitor to sit near the load for improved transient response. Reverse current protection, soft-start, current limiting, and thermal shutdown are integrated to safeguard the device and downstream circuitry. Quiescent current is low, suiting always-on automotive subsystems. The LP5912-Q1 uses TI's proprietary low-noise architecture to achieve noise performance comparable to LDOs that require external bypass capacitors, while saving board space and BOM cost. The WSON-6 package with an exposed thermal pad provides low theta_JA suitable for 500 mA continuous operation in compact PCB areas. Typical applications include automotive camera modules, ADAS sensor power rails, infotainment RF/PLL supplies, and always-on microcontroller rails in body electronics and cluster instrumentation. The fixed 1.1 V output is well matched to low-voltage SoC core rails and to powering image sensors, RF transceivers, and precision analog front ends. When designing with this part, place input and output ceramic capacitors (1 uF or larger, X7R/X5R) as close as possible to the IN and OUT pins. Although the device tolerates remote output capacitance, trace inductance between the output capacitor and the load must be kept low for optimal load-transient behavior. This page synthesizes distributor pricing, drop-in alternatives, and practical design guidance not found in the manufacturer datasheet.
LP87524-Q1 - 10A Quad-Output Automotive Buck | TI
The LP87524-Q1 is an automotive-grade, 10A, 1-phase, quad-output step-down buck converter with integrated switches from Texas Instruments. It delivers up to 10A total across four output rails in a compact VQFN-26-HR-EP package (4x4.5mm). Operating over -40°C to +125°C, it is AEC-Q100 qualified for harsh automotive environments. A buck converter is a DC-DC step-down regulator that reduces a higher input voltage to a lower output voltage. As a power management IC (PMIC), the LP87524-Q1 integrates multiple switching rails into a single device, reducing board space and system cost compared to discrete regulators. Key features include 2MHz switching frequency, integrated power switches, load-current measurement without external sense resistors, and programmable start-up/shutdown delays and sequences. These sequences can synchronize with enable signals and GPIOs to control external regulators, load switches, and processor resets. The device's high integration eliminates external current-sense resistors, simplifying layout. The LP87524-Q1 is designed to power automotive application processors like TDA4, AM62A, and AM26x series. Its four outputs can supply core, memory, I/O, and peripheral rails with high efficiency. The programmable sequencing enables safe power-up and power-down of complex SoCs, preventing latch-up or data corruption. Typical applications include ADAS, infotainment, cluster displays, telematics, and in-vehicle networking. The 10A capability supports high-performance CPUs and GPUs. The wide input voltage range [DATA_NEEDED] allows direct connection to automotive 12V/24V buses. When designing with LP87524-Q1, ensure adequate input capacitance and thermal vias for the exposed pad. The programmable sequence feature must be configured correctly via I2C to match the processor's power sequencing requirements.
LP87702 - Dual Buck + 5V Boost PMIC | Texas Instruments
The Texas Instruments LP87702 is a high-efficiency power management IC (PMIC) integrating two step-down DC/DC converters (Buck0 and Buck1) and a 5-V boost converter, designed for safety-critical industrial radar applications. It is housed in a 32-pin VQFN (RHB, 5x5 mm) package and supports input voltages from 2.8V to 5.5V with programmable output voltages and remote voltage sensing to compensate for IR drops. A PMIC (Power Management Integrated Circuit) consolidates multiple power conversion and management functions into a single package. In the power-management hierarchy, the LP87702 is a multi-rail switching regulator (buck/boost DC-DC converter) within the broader category of power management ICs, reducing board space and simplifying power sequencing versus discrete solutions. Key features include two synchronous buck converters delivering up to 3A each, a 5V boost converter with up to 600mA output, and programmable start-up and shutdown sequences synchronized to the enable signal. Diagnostic functions - two voltage monitoring inputs for external rails, a window watchdog, current limiting, and thermal shutdown - are critical for functional-safety designs. Automatic PWM/PFM (AUTO mode) operation maintains high efficiency over a wide load range. The LP87702 uses fixed-frequency PWM control with internal compensation. The buck converters switch at 2.2MHz, enabling small external inductors and capacitors. Remote voltage sensing improves output accuracy by compensating PCB trace resistance, which matters for high-current radar loads. An I2C interface supports dynamic voltage scaling and status monitoring. Typical applications include industrial radar sensors, ADAS radar front ends, safety-critical embedded systems, and camera modules requiring 5V rails for analog front ends. Integrated diagnostics and the watchdog suit ASIL-oriented designs, while compact footprint suits space-constrained industrial sensors. When designing with the LP87702, connect remote-sense pins at the point of load and follow TI datasheet layout guidance: solid ground plane, input decoupling close to VIN, and careful switch-node routing to limit EMI.
LP87702DRHBRQ1 - Dual Buck + 5V Boost PMIC for Radar | TI
The Texas Instruments LP87702DRHBRQ1 is a dual step-down DC/DC converter and 5-V boost PMIC with integrated diagnostic functions, engineered specifically for automotive camera and radar applications. Housed in a 32-pin VQFN (5x5 mm, RHB) package, this AEC-Q100 qualified device integrates two synchronous buck converters and a 5-V boost converter with two external voltage monitoring inputs and a window watchdog for functional-safety critical systems. The device operates from a wide input range suitable for automotive 12-V battery rails and supports safety-critical radar MMICs, FPGAs, and processors used in ADAS platforms. A PMIC (Power Management IC) is an integrated circuit that combines multiple voltage regulators and supervisory functions into a single package, simplifying board layout, reducing BOM count, and improving system-level reliability. Within the broader power-management hierarchy, a multi-rail PMIC sits above discrete LDOs and single-channel DC/DC converters, and the LP87702DRHBRQ1 specifically targets radar and camera SoC power trees where deterministic sequencing, fault monitoring, and a small PCB footprint are required. The integrated 5-V boost converter eliminates the need for an external pre-regulator when powering MMIC PA rails or image-sensor analog supplies. Key features include two high-efficiency synchronous buck converters, one boost output, window watchdog with programmable timing, two voltage monitors, output over-current and over-temperature protection, and a serial control interface for output-voltage margining. The device supports OTP-programmed default voltages per part-number variant, allowing different rails to be configured without external resistor dividers. A thermal shutdown block and under-voltage lockout complete the protection set. The compact 5x5 mm VQFN-32 package offers an exposed thermal pad to dissipate power from the boost stage under heavy radar load conditions. The LP87702's automotive-grade qualification (AEC-Q100 Grade 1, -40C to +125C) and integrated diagnostics make it suitable for safety-critical ADAS functions including front radar, surround-view cameras, and driver-monitoring systems. The window watchdog and voltage monitors support ISO 26262 functional-safety architectures by providing independent fault detection outside the host SoC. Typical applications include automotive radar power supplies (77-GHz front radar), surround-view and front-camera PMICs, ADAS ECU rails, and any multi-rail SoC requiring sequenced startup with supervisory diagnostics. Designers should verify OTP defaults for their specific SKU and budget boost-converter thermal dissipation when designing continuous-wave radar loads. When designing with this device, allocate sufficient copper area beneath the exposed pad to keep junction temperature within the AEC-Q100 envelope, and follow TI's recommended input/bulk capacitor network on the boost rail to suppress input ripple during radar chirp events. This page synthesizes distributor pricing, automotive-grade alternatives, and application-specific design notes not found in the manufacturer datasheet.
LP87721-Q1 - Automotive 3A 3-Channel Low-Noise Buck PMIC | Texas Instruments
The LP87721-Q1 from Texas Instruments is an automotive-grade, three-channel low-noise buck converter power management IC (PMIC) delivering up to 3A per channel, optimized for radar applications. It is available in a 24-pin VQFN-HR (4x4) package and is qualified to AEC-Q100 (Q1) standards. A PMIC, or Power Management IC, is a semiconductor device that integrates multiple voltage regulator channels, control logic, and sequencing functions into a single chip. It sits within the broader power management IC hierarchy, which is a subset of integrated circuits used to convert, regulate, and distribute power across a system. PMICs are essential for managing the multiple power rails required by processors, sensors, RF transceivers, and other analog and digital components. Key features of the LP87721-Q1 include three independent buck converter channels, each capable of sourcing 3A, a low-noise design for sensitive radar signal chains, and automotive qualification. The integrated MOSFETs and control circuitry reduce external component count, simplifying board design. The device supports a wide input voltage range, although specific values require verification from the datasheet. The compact VQFN-HR package enables space-constrained designs typical of in-vehicle radar modules. Architecturally, the LP87721-Q1 uses synchronous buck topology to achieve high efficiency, and the low-noise output is critical for maintaining radar signal integrity. The PMIC includes features for power sequencing, allowing controlled start-up of multiple rails. Detailed specifications such as switching frequency, output voltage accuracy, and quiescent current are documented in the TI datasheet (https://www.ti.com/product/LP87721-Q1). Typical applications include automotive radar front ends, advanced driver assistance systems (ADAS), driver monitoring systems, and industrial radar. The device is particularly suited for powering radar processors and sensors, where multiple clean 3A rails are required. Its AEC-Q100 qualification ensures reliable operation under harsh automotive conditions. When designing with the LP87721-Q1, pay attention to input and output capacitor selection to maintain stability and reduce noise. Ensure adequate PCB copper area for thermal dissipation, as the buck converters can dissipate significant power at high load. The sequencing feature should be utilized to maintain proper power-up order. For precise design guidance, refer to the TI application notes and reference designs.
LP87725-Q1 - Radar PMIC 3 Buck + LDO | Texas Instruments
The Texas Instruments LP87725-Q1 is a power management integrated circuit (PMIC) designed specifically for automotive and industrial mmWave radar sensors, including TI's AWR and IWR MMICs. It integrates three synchronous step-down DC/DC converters, one low-dropout linear regulator (LDO), and one load switch, providing five total regulated outputs in a compact 24-pin VQFN-HR (4x4) package. What is a power management IC? A PMIC is a specialized chip that sits between the battery or main power rail and the application processor or sensor, generating and sequencing the multiple supply voltages required by different sub-blocks. In a radar system, the PMIC must supply clean, tightly regulated rails to the RF transceiver, the digital baseband, and the analog front-end, with precise power-up sequencing to prevent latch-up or damage. Key features of the LP87725-Q1 include three buck converters with integrated FETs for high efficiency, an LDO for noise-sensitive analog supplies, and a load switch to turn off unused rails. It supports remote voltage sensing to compensate for IR drop between the regulator output and the point-of-load, improving output voltage accuracy. Programmable start-up and shutdown delays and sequences are synchronized to the ENABLE signal, simplifying power sequencing in multi-rail systems. The device is qualified for automotive applications (AEC-Q100, implied by the Q1 suffix) and is optimized to power the AWR/IWR MMICs used in advanced driver-assistance systems (ADAS) and industrial radar. Typical applications include automotive radar, industrial radar for traffic monitoring, drones, and proximity sensing. The compact VQFN package and integrated components reduce board space and simplify radar sensor module design. Design considerations include proper thermal management to dissipate heat from the buck converters, and careful PCB layout to minimize parasitic inductance and noise. The programmable sequencing feature must be configured to match the power-up requirements of the MMIC. For detailed design guidance, consult the LP87725-Q1 datasheet and the LP87725Q1EVM evaluation module.
LP8772x-Q1 - Automotive Radar PMIC | Texas Instruments
The Texas Instruments LP8772x-Q1 is a power management IC (PMIC) designed specifically for mmWave radar sensors. It integrates three synchronous buck converters, one linear regulator (LDO), and one load switch in a compact 24-VQFN-HR (4x4 mm) package. The device is AEC-Q100 qualified, making it suitable for automotive and industrial radar applications. It is intended to power AWR and IWR radar MMICs, providing the necessary power rails for RF front-ends, digital processors, and analog circuits. A PMIC (Power Management Integrated Circuit) is a system-level IC that manages multiple power rails, typically including DC-DC converters, LDOs, and load switches. It ensures that each subsystem receives the correct voltage, current, and sequencing. The LP8772x-Q1 belongs to a family of radar-specific PMICs that address the unique requirements of mmWave sensors, such as low noise for RF chains and precise power sequencing for radar MMICs. By integrating three buck converters, an LDO, and a load switch, the LP8772x-Q1 minimizes external component count and simplifies the power tree, reducing design complexity and PCB size. Key features include remote voltage sensing to compensate for IR drop between the regulator output and the point-of-load, programmable start-up and shutdown delays synchronized to the ENABLE signal, and an integrated watchdog timer for system monitoring. These features ensure accurate output voltage regulation and reliable operation. The 24-VQFN-HR package is compact and thermally efficient, with an exposed pad for heat dissipation. The Q1 suffix denotes AEC-Q100 qualification, which guarantees robust performance in harsh automotive environments. The three synchronous buck converters deliver high-efficiency step-down regulation for digital core and I/O rails, while the LDO provides a low-noise supply for noise-sensitive analog circuits. The load switch allows controlled power gating to reduce standby current. The integrated watchdog helps detect system faults and ensures safe operation. The device supports programmable sequencing, allowing the power rails to come up in the correct order when the ENABLE signal is asserted. Typical applications for the LP8772x-Q1 include automotive radar systems (AWR), industrial radar sensors (IWR), ADAS, traffic monitoring, and in-cabin occupant detection. The device is also used in UAV radar systems. Its flexible configuration and small footprint make it an ideal choice for space-constrained radar modules. When designing with the LP8772x-Q1, engineers should pay careful attention to input/output capacitance, layout for remote sensing, and thermal management. The programmable sequencing must be configured to match the radar MMIC's power requirements. For precise output voltages, use the remote sense lines with Kelvin connections. Ensure the watchdog is properly programmed to avoid false resets during normal operation.
LP8860-Q1 - 4-Ch 150mA Automotive LED Driver | TI
The Texas Instruments LP8860-Q1 is an automotive high-efficiency LED driver with an integrated boost controller, providing four high-precision current sinks rated at 150 mA per channel. It operates from a 3 V to 48 V input range and is available in a 32-pin HLQFP (7x7 mm) package, AEC-Q100 qualified for automotive applications. An LED driver is a power management IC that regulates current through LEDs to guarantee consistent brightness and protect against overcurrent. The LP8860-Q1 belongs to the boost LED driver family, which steps up a lower input voltage to the higher voltage demanded by LED strings, integrating boost control, current sinks, and dimming logic into a complete automotive display backlighting solution. Key features include hybrid PWM and current dimming, which reduces EMI, extends LED lifetime, and increases total optical efficiency. Phase-shift PWM reduces audible noise and output ripple. The switching frequency is adjustable from 100 kHz to 2.2 MHz with spread-spectrum operation, allowing designers to avoid AM radio band interference. Brightness can be controlled by a PWM input pin, an SPI or I2C master, or both, offering flexible system integration. The device employs adaptive output voltage control based on LED string headroom, minimizing power dissipation and maximizing efficiency. Comprehensive fault protection includes LED open/short detection, overvoltage protection, and overtemperature protection. The low-EMI architecture meets stringent automotive electromagnetic compatibility requirements. Typical applications include automotive infotainment displays, instrument clusters, and heads-up displays (HUD), where its wide input range and 4x150 mA capability suit 12 V automotive systems driving multi-LED strings. Design tip: ensure proper PCB layout with adequate copper area for thermal dissipation, place the boost inductor and capacitors close to the IC, and use the ISET pin resistor to set LED current precisely. Pricing as of 2026-08-29.
LP8861QPWPRQ1 - 4-Ch LED Driver, SEPIC/Boost, AEC-Q100 | TI
The Texas Instruments LP8861QPWPRQ1 is an automotive-grade, high-efficiency, low-EMI four-channel LED driver with an integrated boost/SEPIC DC-DC converter, housed in a 20-pin HTSSOP (PWP) power package with an exposed thermal pad. It delivers up to 100 mA per output with adaptive headroom control, and its switching frequency is programmable from 300 kHz to 2.2 MHz to balance EMI performance against inductor size. An LED driver is a specialized power-management IC that converts a higher-voltage DC rail into precisely regulated currents for one or more strings of LEDs. The LP8861-Q1 belongs to the LED driver IC category within the broader power-management IC family (LED driver → display/lighting driver → power management IC → integrated circuit). It differs from a generic constant-voltage regulator in that it regulates current, not voltage, which is critical because LED luminance is set by forward current and LED forward voltage varies with temperature and bin. Key features include four high-precision current sinks with PWM dimming input, spread-spectrum and adaptive-output-voltage operation to minimize power dissipation, and SEPIC/boost topology flexibility for 5 V to 24 V automotive battery systems. The Q1 suffix indicates AEC-Q100 qualification for automotive applications, and the device supports high dimming ratios for HUD, instrument-cluster, and rear-light functions. Its switching frequency range of 300 kHz to 2.2 MHz allows engineers to place the fundamental outside AM-band-sensitive frequencies for low-EMI compliance. Architecturally, the LP8861-Q1 uses an asynchronous boost/SEPIC controller driving an external MOSFET, with internal current sinks regulating each of the four LED strings. Adaptive output voltage minimizes the voltage drop across the current sinks, dramatically reducing power dissipation in the IC and improving total system efficiency. Fault protection includes LED open/short detection, thermal shutdown, and input undervoltage lockout. Typical applications include automotive infotainment displays, instrument-cluster backlighting, heads-up displays (HUD), and automotive exterior lighting such as daytime running lights and rear combination lamps. The wide 5 V to 24 V supply range accommodates cranking and load-dump transients typical of 12-V automotive electrical systems. When designing with the LP8861-Q1, careful inductor and input/output capacitor selection is critical because the device operates over a wide switching-frequency range. The exposed thermal pad must be soldered to a sufficiently large copper pour to keep junction temperature within automotive limits (typically ≤125 °C).
LP8869CQPWPRQ1 - 3-Ch 120mA Auto LED Driver | Texas Instruments
The Texas Instruments LP8869CQPWPRQ1 is an AEC-Q100 qualified, highly-integrated 3-channel 120-mA automotive LED driver with a built-in DC-DC converter supporting both boost and SEPIC topologies, housed in a 20-pin HTSSOP (PWP) power package with an exposed thermal pad. A LED driver IC is a power management device that regulates the current flowing through light-emitting diodes, ensuring consistent brightness, extended lifespan, and dimming control. Within the broader taxonomy, this part is a multi-channel constant-current LED driver, a sub-category of power management ICs that interfaces between a vehicle's electrical bus and the LED strings used in instrument panels, head-up displays, and infotainment screens. Automotive LED drivers must meet stringent EMI and temperature requirements defined by AEC-Q100 and OEM-specific standards, and they typically integrate fault protection, PWM dimming, and spread-spectrum modulation to comply with CISPR 25 conducted/radiated emissions. The LP8869CQPWPRQ1 delivers 120 mA per channel across three high-precision current sinks that can be paralleled for higher current, achieving a typical current matching of 1%. Key features include a high dimming ratio of 10,000:1 at 100 Hz, an input voltage range of 4.5 V to 40 V with load-dump tolerance up to 45 V, an internal switching frequency range of 300 kHz to 2.2 MHz, and integrated protections including under-voltage, over-voltage, and over-temperature. The HTSSOP-20 package with exposed pad keeps junction temperature within the automotive grade 1 range of -40 °C to +125 °C. Internally, the device uses an asynchronous current-mode control loop for the boost/SEPIC converter, with adaptive output voltage control that minimizes power dissipation by adjusting VOUT to the minimum required for the LED forward voltages. The integrated MOSFETs, current sinks, and PWM dimming logic are designed to reduce EMI through spread-spectrum frequency modulation and careful gate-edge control, enabling CISPR 25 Class 5 compliance in typical automotive display backlight topologies. Typical applications include automotive LCD display backlighting for instrument clusters, center-stack displays, and head-up displays, as well as interior ambient lighting and small-form-factor automotive lighting where wide input range, low EMI, and high dimming ratio are simultaneously required. When designing with the LP8869CQPWPRQ1, ensure that the switching frequency is selected away from AM radio bands (typically > 1.7 MHz) and that the input bulk capacitance is sized to handle the worst-case cold-crank and load-dump transients specified by ISO 7637-2. This page synthesizes real-time distributor pricing, qualified drop-in alternatives, and practical automotive EMI design notes not found in the manufacturer datasheet alone.
LR1107G-18-AA3-A-R - 1.8V 600mA Ultra LDO Regulator | UTC
The Unisonic Technologies LR1107G-18-AA3-A-R is a 600 mA fast ultra-low-dropout (LDO) linear regulator with a fixed 1.8 V output, housed in a 4-pin SOT-223 (AA3) surface-mount package. It operates from a +2.5 V to +7.0 V input supply and targets low-voltage microprocessor and portable-power applications where fast transient response and a low quiescent current are required. The fixed-output (-18) variant delivers a nominal VOUT of 1.8 V, with the wider LR1107 family offering other fixed rails from 1.145 V up to 5 V via the SET/ADJ pin. An LDO (Low-Dropout) linear regulator is a type of voltage regulator that maintains a stable output voltage even when the input voltage is only marginally above the output voltage. Within the broader power-management taxonomy, LDOs sit under linear regulators, which sit under voltage regulators, which are themselves part of the power-management integrated-circuit family. LDOs differ from switching regulators in that they dissipate excess voltage as heat rather than storing energy in an inductor, trading efficiency for very low output noise - a valuable trait for analog, RF, and digital-core rails. Key features of the LR1107G-18-AA3-A-R include a typical dropout of around 200 mV at full 600 mA load, a ground-pin current of roughly 150 uA at 1 mA load, and a fast transient response that makes it suitable for low-voltage microprocessor cores. It also includes built-in thermal protection, current limiting, and an ERROR flag (open-drain) for power-rail monitoring, which is useful in multi-rail systems that need to detect a brown-out condition. Typical applications include 1.8 V core supplies for low-voltage DSPs and microprocessors, post-regulation after a switching converter for noise-sensitive analog blocks, USB-powered portable devices, and 3.3 V-to-1.8 V point-of-load conversion in FPGA or microcontroller designs. The SOT-223 package provides a tab that can be soldered to a copper pour to extend continuous output current while keeping the footprint compact. When designing with this part, observe the maximum input voltage of 7.0 V and confirm that VIN - VOUT remains above the dropout threshold under worst-case load. The ERROR pin requires an external pull-up resistor, and the SET/ADJ pin (on adjustable variants of the same family) must be tied through a resistor divider when used. This page synthesizes distributor pricing for the LR1107G-18-AA3-A-R, real drop-in alternatives from the same Unisonic Technologies family and competitor catalogs, and practical PCB-level design notes not consolidated on any single manufacturer page.
LR8N8-G - 450V, 20mA Adjustable Linear Regulator | Microchip
The Microchip Technology LR8N8-G is a high-input-voltage, adjustable, 3-terminal linear regulator housed in a TO-243AA (SOT-89) surface-mount package. According to the Microchip datasheet, it accepts an input voltage range of 13.2 V to 450 V and delivers an adjustable output of 1.20 V to 438 V, provided that VIN is at least 12 V greater than VOUT, with a maximum output current of 20 mA (typical 10 mA). An adjustable linear regulator is a type of analog voltage regulator whose output is set by an external resistor divider rather than a fixed internal reference. Within the broader power-management hierarchy, the LR8 sits in the linear regulator (LDO-class) family, which itself is a subset of voltage regulators. Linear regulators dissipate the difference between input and output as heat rather than switching it, trading efficiency for very low output noise and minimal EMI. The LR8 specifically targets the niche of high-voltage bias rails where most general-purpose LDOs cannot operate. Key features include a 5% output voltage tolerance, integrated output current limiting, a typical ADJ pin bias current of 10 µA, and internal junction temperature protection. Because the device is a 3-terminal part (IN, OUT, ADJ) in the same SOT-89 footprint as a conventional low-voltage regulator, it offers a drop-in, compact solution for offline-derived auxiliary rails without the complexity of a switching converter. Typical applications include biasing of IGBT/SiC gate drivers in motor drives, bias for solid-state relay (SSR) and opto-coupler LED drivers, offline LED string drivers, and as an auxiliary supply for industrial control boards tapped from a 120/230 VAC or 380 VDC bus. When designing with the LR8N8-G, plan thermal dissipation carefully: at 400 V input and a 1 mA load, the device still dissipates the full VIN minus VOUT drop. The SOT-89 package has limited thermal mass, so always verify worst-case junction temperature using the datasheet's theta_JA value and the actual PCB copper area. This page synthesizes distributor inventory, parametric cross-references, and engineering design notes - information not assembled in any single manufacturer datasheet - to accelerate sourcing and first-pass design decisions for the LR8N8-G.
LS2406ERQ23 - 24V/6A eFuse with True RCB & Fast Role Swap
The Littelfuse LS2406ERQ23 is an advanced 28 V, 6 A rated electronic fuse (eFuse) protection IC that integrates a 24 mΩ ultra-low RDS(ON) power switch with comprehensive fault management in a compact 16-pin QFN (2.5 × 3.2 mm) package. It delivers current-limit, short-circuit, input-voltage surge, excessive inrush, over-temperature, and all-time reverse-current blocking protections to the system downstream of the switch, regardless of the EN logic state. An eFuse (semiconductor-based protection IC) is a solid-state replacement for traditional fuses and PTC resettable devices. It sits between a system power rail and its downstream load, monitoring current, voltage, and temperature and disconnecting the path when an abnormal condition is detected. eFuses belong to the broader hierarchy of power-path protection -> hot-swap controllers / load switches -> power-management ICs, and are preferred over fuses because they offer programmable thresholds, fast re-insertion, and telemetry flags for the host MCU. Key features of the LS2406ERQ23 include an adjustable current limit up to 6 A set by an external resistor, true reverse-current blocking (RCB), a fast role swap (FRS) function compatible with the USB Power Delivery Specification timing, thermal fold-back, and over-temperature shutdown. The 24 mΩ on-resistance minimises I²R conduction loss during normal operation, improving efficiency in battery-powered and adapter-powered designs. The device uses a low-side N-channel pass-FET topology with an integrated charge pump, allowing it to block current in both forward and reverse directions. Its programmable soft-start and inrush-current limiting protect upstream sources from load-step transients, and the FLAG/PGOOD pin provides real-time fault telemetry. The 16-QFN package offers a low thermal resistance path, suitable for 6 A continuous operation with adequate PCB copper. Typical applications include USB Type-C / USB PD source and sink ports, notebook and tablet charging subsystems, hot-swap bay protection in industrial PCs, multi-port wall adapters, and any 5 V to 20 V rail that must survive hot-plug events and unexpected reverse-current injection. When designing with the LS2406ERQ23, size the input and output capacitors per the datasheet to suppress transient ringing during fast role-swap events. Ensure sufficient copper area beneath the exposed pad to keep junction temperature below the thermal fold-back threshold at worst-case VIN and IOUT. This page synthesizes distributor pricing, same-brand and cross-brand drop-in alternatives, and practical PCB-layout design notes that go beyond the manufacturer datasheet, helping engineers shortlist a validated protection IC for USB PD and hot-swap designs.
LT1076CQ - 2A Step-Down Switching Regulator | Analog Devices
The LT1076CQ is a monolithic bipolar step-down switching regulator from Analog Devices (formerly Linear Technology) that delivers up to 2A of switch current in a TO-263-6 (D2PAK) package. It operates as a buck, boost, or flyback converter with positive or negative output polarity, and features an adjustable output voltage starting from 2.5V. The device integrates the power switch, oscillator, control circuitry, and current limit components on a single chip, requiring only a few external parts for normal operation. A switching regulator is a voltage regulator that uses a switching element (transistor) to convert an input voltage to a desired output voltage with high efficiency, typically above 80%. Unlike linear regulators, switching regulators store energy in inductors and capacitors and switch the element on and off at a high frequency (100kHz for the LT1076) to control the output. This makes them ideal for applications where power dissipation and heat are concerns, such as battery-powered devices and industrial power supplies. Key features of the LT1076CQ include a 100kHz switching frequency, 8.5mA quiescent current, programmable current limit, and the ability to operate with input voltages up to 60V. The device also includes micropower shutdown for power saving. The TO-263-6 package provides excellent thermal performance with a low thermal resistance, enabling high power dissipation without external heatsinks in many applications. The LT1076CQ uses a classic positive buck topology but includes design innovations that allow it to be used as a positive-to-negative converter (flyback) and in boost configurations. The internal current limit is set at 2.6A (for the LT1076), and the oscillator frequency is preset at 100kHz, which balances efficiency and component size. The device is designed for rugged industrial environments, with a junction temperature range of -40°C to +125°C. Typical applications include industrial power supplies, battery chargers, distributed power systems, and automotive electronics. Its wide input voltage range and high efficiency make it suitable for systems that require step-down conversion from 24V or 48V buses. The LT1076CQ is also used in negative output applications, such as generating -5V from a positive input. When designing with the LT1076CQ, ensure proper input and output capacitor selection and inductor sizing to maintain stability and low ripple. The programmable current limit allows designers to set the maximum switch current to protect the circuit. The device is available in lead-free (PBF) and tape-and-reel (TR) options, and is RoHS compliant.
LT1076CQ#PBF - 2A Buck/Boost/Flyback Regulator | Analog Devices
The LT1076CQ#PBF is a monolithic bipolar switching regulator from Analog Devices (formerly Linear Technology) that delivers up to 2A of switch current in a TO-263-6 (D2PAK) package. It supports buck, boost, flyback, and inverting topologies with an adjustable output voltage from 2.5V to 50V. The device integrates the power switch, oscillator, control circuitry, and current limit components, requiring only a few external parts for operation. With a 100kHz switching frequency and current-mode PWM control, it offers excellent dynamic response and stability. A switching regulator is a voltage regulator that uses an inductor, switch, and diode to efficiently convert an input voltage to a desired output voltage. Unlike linear regulators, switching regulators achieve high efficiency by storing energy in the inductor and switching the power transistor on and off. The LT1076CQ#PBF belongs to the family of DC-DC converters, which are essential in power management systems for converting voltages in battery-powered devices, industrial equipment, and automotive electronics. Key features of the LT1076CQ#PBF include a 2A switch current rating, wide input voltage range up to 60V, and the ability to operate in multiple topologies. The current-mode control architecture provides inherent cycle-by-cycle current limiting and simplifies loop compensation. The device also features thermal shutdown and a low quiescent current, making it suitable for power-sensitive applications. The LT1076CQ#PBF uses a bipolar process technology, which provides robust performance and high reliability. The 100kHz switching frequency balances efficiency and component size, allowing for compact inductor and capacitor selections. The device's adjustable output voltage range of 2.5V to 50V provides flexibility for various output requirements. Typical applications include industrial power supplies, battery chargers, distributed power systems, and automotive electronics. The device's ability to step up, step down, or invert voltage makes it a versatile choice for many power conversion needs. When designing with the LT1076CQ#PBF, ensure proper PCB layout with short, low-inductance paths for the switch node and ground. Use appropriate input and output capacitors to minimize ripple and ensure stability. The thermal pad of the D2PAK package should be connected to a large copper area for heat dissipation.