DC-DC Converters
Products (207)
LM5176 - 55V Wide VIN 4-Switch Buck-Boost Controller | TI
The Texas Instruments LM5176 is a synchronous four-switch buck-boost DC/DC controller that regulates output voltage at, above, or below the input voltage. It operates over a wide input voltage range of 4.2 V to 55 V (60-V absolute maximum), making it suitable for a variety of applications including automotive, industrial, and power supply designs. The controller integrates four N-channel MOSFET drivers, eliminating the need for external drivers or floating bias supplies. A buck-boost controller is a type of switching regulator that can step up or step down an input voltage to produce a regulated output. Unlike a buck or boost converter alone, a four-switch buck-boost topology uses four switches (two high-side and two low-side) to achieve seamless transition between buck and boost modes, maintaining regulation across a wide input range. This makes it ideal for battery-powered systems where the input voltage can vary above and below the desired output. Key features of the LM5176 include a wide input voltage range, integrated high-side and low-side drivers, programmable switching frequency, and comprehensive protection features such as overvoltage protection (OVP) and undervoltage lockout (UVLO). The device also supports constant current regulation with an external sense resistor, enabling applications like LED drivers and battery chargers. The LM5176 uses a current-mode control architecture with a precision reference, providing excellent line and load regulation. The integrated VCC regulator powers the internal bias rails and gate drivers, simplifying the design. The device is available in a 28-pin HTSSOP package (PWPR), which offers good thermal performance for high-power applications. Typical applications include USB Power Delivery (PD) adapters, automotive infotainment systems, industrial power supplies, and battery-powered equipment. The wide input range and high efficiency make it a versatile choice for designs requiring a regulated output from varying input sources. When designing with the LM5176, ensure proper PCB layout with adequate copper area for thermal dissipation, and place the input and output capacitors close to the IC. The switching frequency can be programmed with an external resistor, allowing optimization between efficiency and component size.
LM5176QPWPRQ1 - 55V 4-Switch Buck-Boost Controller | TI
The Texas Instruments LM5176QPWPRQ1 is an AEC-Q100 qualified synchronous four-switch buck-boost DC/DC controller capable of regulating the output voltage at, above, or below the input voltage. It operates from a 4.2 V to 55 V input (60 V absolute maximum) with a programmable switching frequency of 100 kHz to 600 kHz, in a 28-pin HTSSOP (PWP) package with PowerPAD. A buck-boost controller is a type of switching regulator that steps voltage up or down as needed. The four-switch buck-boost topology uses four external MOSFETs to transition seamlessly between buck and boost operation, making it ideal where input voltage varies above and below the output, as in automotive 12 V buses during cranking and load-dump. In the power management hierarchy: buck-boost controller -> DC-DC controller -> switching regulator -> power management IC. Key features include current-mode control in both buck and boost modes for superior load and line regulation, integrated cycle-by-cycle current limiting, output overvoltage protection, thermal shutdown, and PWM/PFM operation for improved light-load efficiency. AEC-Q100 qualification with -40C to +125C ambient operation (junction up to +150C) targets harsh automotive environments. Architecturally, the LM5176-Q1 drives external N-channel MOSFETs, allowing designers to scale output power freely. The proprietary current-mode scheme simplifies loop compensation and delivers fast transient response, while the four-switch topology maintains high efficiency across wide input-to-output ratios. Typical applications include automotive USB power delivery, battery-backup and holdup power supplies, industrial 12 V/24 V bus systems, LED drivers, and renewable energy interfaces. Its transient immunity keeps output regulation during automotive input disturbances. Design with care: keep MOSFET gate-drive loops short, place high-frequency decoupling close to the IC, and select the switching frequency to balance efficiency versus component size. Tune the compensation network for stable operation across buck, boost, and buck-boost transition regions.
LM61440 - 4A 36V Low EMI Sync Buck Converter | TI
The Texas Instruments LM61440 is a high-performance, synchronous step-down DC-DC converter with integrated high-side and low-side MOSFETs, delivering up to 4 A of output current over a wide input voltage range of 3.0 V to 36 V with 42 V transient tolerance, easing input surge protection design. It is available in a 14-pin PowerVFQFN (RJR) package with exposed pad. A synchronous buck converter is a DC-DC step-down regulator that uses both high-side and low-side switches to efficiently convert a higher input voltage to a lower output voltage. Unlike asynchronous converters that use a diode for the low-side path, synchronous converters replace the diode with a low-resistance MOSFET, reducing conduction losses and improving efficiency at high output currents. Synchronous buck converters are a cornerstone of power management ICs, enabling compact, high-efficiency point-of-load power supplies across automotive, industrial, and networking systems. Key features of the LM61440 include soft recovery from dropout, which eliminates output overshoot when the input voltage dips close to the regulated output, ensuring stable behavior during cold-crank and sag conditions. The device incorporates pseudo-random spread spectrum to reduce peak EMI, adjustable SW node rise time to optimize the efficiency-versus-EMI trade-off, and a low-EMI VQFN-HR package with minimized switch node ringing. Technically, the LM61440 uses current-mode control with integrated compensation, providing fast transient response and stability across a wide range of output capacitors. The adjustable output goes down to 1 V, suiting modern low-voltage digital cores. The integrated MOSFETs eliminate external FETs, reducing board space and BOM complexity, while the PowerVFQFN exposed pad enables high power density designs. Typical applications include automotive power supplies, industrial control, telecom and networking equipment, and general-purpose point-of-load conversion from 12 V or 24 V rails. The wide input range and 42 V tolerance make it ideal where input spikes are common, and the low EMI features benefit automotive and communications designs with strict CISPR-class requirements. When designing with the LM61440, select input and output capacitors per the TI datasheet recommendations to maintain stability and low ripple; the adjustable SW slew rate lets you trade efficiency for EMI margin.
LM61440-Q1 - 36V, 4A Automotive Low-Noise Buck | Texas Instruments
The Texas Instruments LM61440-Q1 is an automotive-focused, high-performance DC-DC synchronous step-down converter delivering up to 4 A of output current over a wide input range of 3 V to 36 V, tolerant of 42 V transients to ease input surge protection design. It integrates high-side and low-side MOSFETs in a 14-pin HotRod VQFN-HR (RJR, PowerVFQFN) package, minimizing switch-node ringing and parasitic inductance through a parallel input path. A synchronous buck converter (also called a step-down switching regulator) is a type of DC-DC converter within the power management IC hierarchy that uses two internal switches plus an inductor to efficiently convert a higher input voltage to a regulated lower output voltage. Compared to linear regulators, synchronous buck converters achieve efficiency typically above 90%, making them the default choice for automotive and industrial point-of-load power rails. Key features include low EMI optimization for CISPR-class automotive requirements, a pin-selectable light-load mode trading efficiency versus ripple, adjustable switching frequency, and functional-safety-capable documentation to support ISO 26262 system designs. The HotRod package eliminates bond wires, reducing parasitic inductance and switch-node overshoot, which directly lowers radiated emissions. Architecturally, the LM61440-Q1 uses a current-mode control topology with integrated FETs, achieving fast transient response and simplified external component selection. The 42 V transient tolerance protects against automotive load-dump and cold-crank conditions without expensive front-end suppression circuitry. Typical applications include ADAS domain controllers, infotainment power trees, automotive body electronics, gateway modules, and industrial 24 V bus point-of-load conversion. Its wide 3 V to 36 V range covers 12 V and 24 V battery systems directly. Design tip: keep the input capacitor loop as tight as possible to the VIN and PGND pins to fully exploit the HotRod parallel input path and minimize EMI; use spread-spectrum or adjustable frequency settings to avoid sensitive radio bands. Pin-compatible family members (LM61460, 6 A) allow current-scaling without PCB redesign.
LMG5126QRXRQ1 - 42V 2.5MHz GaN Boost Converter | TI
The Texas Instruments LMG5126QRXRQ1 is an automotive-grade (AEC-Q100) wide-input synchronous GaN boost converter that operates from a 6.5V to 42V input (minimum 2.5V for VBIAS >= 6.5V or VOUT >= 6V) with a switching frequency of up to 2.5MHz. The device integrates GaN power stages and output voltage tracking, delivered in the QXR surface-mount package with Q1 automotive qualification. A boost converter is a type of switching DC-DC voltage regulator, belonging to the broader power management IC hierarchy. A boost (step-up) regulator converts a lower input voltage into a higher regulated output voltage by storing energy in an inductor during the switch on-time and transferring it to the output during the off-time. Synchronous boost converters replace the output rectifier diode with a controlled switch to improve efficiency, while GaN (gallium nitride) power technology enables the very high 2.5MHz switching frequency that shrinks inductor and capacitor sizes. Key features include the wide 6.5V to 42V input range supporting automotive cold-crank and load-dump environments, 2.5MHz operation allowing very small magnetics, and output voltage tracking for controlled power-up and power-down sequencing. TI's integrated GaN power stage approach eliminates external gate-driver complexity compared to discrete GaN solutions, improving EMI and layout robustness in automotive power supplies. Technically, the LMG5126 family pairs a wide-input boost controller with internal power switches, achieving high power density for pre-boost and regulated high-voltage rail applications. The high switching frequency reduces the energy storage requirement per cycle, enabling compact inductors, and the synchronous topology improves light-load and full-load efficiency versus diode-rectified designs. Typical applications include automotive pre-boost regulators for audio amplifiers, headlight and display LED rail supplies, 48V-derived auxiliary rails, and communication equipment requiring a regulated rail from an automotive 12V or 24V battery bus. When designing with the LMG5126QRXRQ1, keep the switching loop and compensation network per the TI datasheet layout guidelines to control EMI at 2.5MHz, and verify the input range margin against transient requirements such as cold crank.
LMG5126RXR - 2.5MHz Wide-Input Boost Converter | Texas Instruments
The Texas Instruments LMG5126RXR is a wide-input, 2.5MHz synchronous boost converter designed for high-density power conversion in space-constrained applications. It operates from a wide input voltage range and delivers an adjustable output voltage set via the ATRK pin, integrating both low-side and high-side power MOSFETs to maximize efficiency and minimize external component count. The 2.5MHz fixed switching frequency permits the use of very small inductors and capacitors, shrinking the total solution footprint for portable and automotive designs. A boost converter, also called a step-up converter, is a switching regulator that produces an output voltage higher than its input. It sits within the power management IC (PMIC) hierarchy, which spans linear regulators, DC-DC converters, and battery management ICs. Boost topologies are essential wherever a source voltage is lower than the required rail, such as single-cell battery systems, USB Power Delivery, and LED backlighting. Synchronous rectification replaces the freewheeling diode with a MOSFET, cutting conduction losses and improving efficiency at load. Key features of the LMG5126RXR include the high 2.5MHz switching frequency, integrated power switches, and an ATRK output-voltage tracking pin that enables precise voltage sequencing and dynamic voltage scaling for processors and FPGAs. Protection features include overcurrent protection, thermal shutdown, and undervoltage lockout (UVLO), ensuring robust operation in demanding environments such as automotive infotainment and industrial systems. Architecturally, the device employs fixed-frequency pulse-width modulation (PWM), which simplifies EMI filtering at known harmonics and provides predictable transient behavior. The integrated low on-resistance MOSFETs reduce conduction losses, while the compact surface-mount package supports high-power-density layouts. Typical applications include battery-powered portable devices, point-of-load boost rails, LED backlight drivers, automotive infotainment systems, and USB PD power stages. Pricing as of 2026-08-30 should be confirmed with authorized distributors. Design tip: select the inductor and output capacitor per the datasheet equations for the target output voltage and load, and configure the ATRK pin voltage to program the desired output level; keep high-current loops short with solid ground planes to control parasitic inductance and EMI.
LMG708B0QRXRQ1 - 80V 20A GaN Buck Converter | Texas Instruments
The Texas Instruments LMG708B0QRXRQ1 is an automotive-grade (Q1) GaN synchronous step-down DC/DC converter delivering up to 20A of output current from a wide 5V to 80V input range. It integrates low RDS(on) gallium-nitride power FETs with near-zero deadtime switching, enabling ultra-high power density and excellent conversion efficiency. The adjustable output voltage spans 1V to 55V, with fixed output options of 5V or 12V, and the maximum junction temperature is rated at 125C. A synchronous buck converter (also called a step-down switching regulator) is a power management IC that uses switching elements and an inductor to efficiently convert a higher input voltage to a lower output voltage. Within the power supply hierarchy - semiconductor, power management IC, DC/DC converter, buck regulator - synchronous buck converters achieve the highest efficiency by replacing the freewheeling diode with a second actively controlled FET. Integrated GaN FETs push this efficiency further: gallium nitride transistors switch faster and exhibit near-zero reverse-recovery losses compared to silicon MOSFETs, dramatically reducing both switching losses and deadtime requirements. Key features of the LMG708B0QRXRQ1 include the 20A output capability, the 80V maximum input for industrial and automotive 48V-class rails, low-RDS(on) integrated GaN power stages, and an operating envelope that supports outputs up to 55V. The Q1 suffix indicates Texas Instruments AEC-Q100 automotive qualification discipline, supporting deployment in vehicle power architectures such as 48V-to-12V point-of-load conversion. Technical strengths center on power density: by combining controller, gate drivers, and GaN FETs in one package, the device eliminates external power stage layout parasitics, minimizes switching-node ringing, and simplifies EMI management. Near-zero deadtime operation avoids the body-diode conduction period that dominates silicon designs, cutting losses at high frequency and high current simultaneously. Typical applications include 48V automotive and industrial power distribution, high-current point-of-load conversion, telecom and server power stages, and robotics/automation drive supplies where high efficiency and compact size are mandatory. Design consideration: with 20A of output current, PCB thermal design and inductor selection dominate system performance - follow the TI datasheet layout guidance closely, and as of 2026-08-29 confirm current pricing and stock via authorized distributors.
LMG708B0RXR - 20A GaN Synchronous Buck 80VIN | Texas Instruments
The Texas Instruments LMG708B0RXR is a high-power-density GaN synchronous buck DC/DC converter integrating low-RDS(on) gallium-nitride power FETs with near-zero deadtime switching, delivering up to 20A of output current across a wide 5V to 80V input voltage range. It is offered in the compact VQFN-28 (RXR) surface-mount package, supporting adjustable output voltages from 1V to 55V plus fixed 5V and 12V output options, with a maximum junction temperature rating of 125C. A GaN synchronous buck converter is a step-down DC-DC switching regulator that uses gallium-nitride FETs as the power switches. In the power-management hierarchy it sits within the DC-DC converter subsystem, converting higher-voltage distribution rails to lower point-of-load voltages for processors, logic, and mixed-signal loads. GaN transistors exhibit very low gate charge and output capacitance, enabling faster switching transitions and dramatically lower switching losses than silicon MOSFETs, which is especially valuable at high step-down ratios such as 48V-to-12V and 48V-to-5V. Key features include the fully integrated controller-plus-GaN power-stage architecture, 20A continuous output current, and near-zero deadtime that minimizes body-diode conduction loss. The integrated approach eliminates external high-side/low-side FET selection and simplifies gate-drive PCB layout. Low RDS(on) reduces conduction loss at full load, yielding high efficiency across a broad load range, while high-frequency capability permits smaller inductors and output capacitors for maximum power density. The 80V maximum input rating provides substantial headroom for 48V industrial distribution buses, telecom -48V infrastructures, and automotive load-dump transients. Output configuration flexibility - resistor-divider adjustable or fixed 5V/12V - allows one footprint to serve multiple rail requirements. Typical applications include 48V industrial bus converters, telecom line cards, server power shelves, 48V automotive subsystems, and high-current LED lighting drivers. The wide input and output ranges make it an effective front-end point-of-load solution for 12V, 5V, or lower core rails at currents up to 20A. Design tip: place low-ESR ceramic input capacitors close to VIN and PGND to handle steep high-frequency current steps, and use thermal vias under the exposed pad to hold junction temperature below 125C. Follow the TI datasheet layout guidelines for optimum switching performance and EMI behavior.
LMQ61460AASQRJRRQ1 - 36V 6A Automotive Buck Converter | TI
The Texas Instruments LMQ61460AASQRJRRQ1 is an automotive-grade (AEC-Q100 qualified) 6 A synchronous step-down DC-DC buck converter with an input voltage range of 3 V to 36 V and 42 V transient tolerance for 400 ms load dump, housed in a 14-pin VQFN-HR (RJR) package with integrated bypass capacitors. A synchronous buck converter is a type of switching voltage regulator that uses two integrated MOSFETs (high-side and low-side) plus an inductor to efficiently step a higher DC voltage down to a lower one. Within the power-management hierarchy, it sits between a controller (which needs external FETs) and a fully integrated power module, offering high power density in a small footprint. Key differentiating features include the MINT (Mitigated Interference and Noise Technology) architecture for inherently low EMI, integrated input bypass capacitors that shrink the solution size and reduce input loop parasitics, soft recovery from dropout that eliminates output overshoot when the input collapses, and a wide output range up to 34.2 V with 6 A continuous output current. Technically, the device integrates the power MOSFETs and key bypass capacitance, minimizing the hot loop area - the dominant radiated-EMI source in buck designs. The AAS suffix denotes the higher switching-frequency option, allowing smaller inductors, while the spread-spectrum-capable MINT operation eases CISPR 25 conduction and radiation compliance in automotive environments. Typical applications include automotive body electronics and ADAS camera or radar modules, 12 V and 24 V industrial bus point-of-load conversion, and USB/infotainment front-end supplies stepping 12 V or 24 V down to 5 V or 3.3 V rails. Design consideration: at 36 V input and 6 A load, verify inductor saturation current and thermal performance; the exposed pad of the VQFN-HR package must be soldered to a substantial copper pour for heat dissipation. This page synthesizes verified distributor pricing, drop-in alternatives, and practical design guidance beyond what the manufacturer datasheet provides.
LMQ61480AASQRJRRQ1 - 8A, 36V Automotive Buck | Texas Instruments
The Texas Instruments LMQ61480AASQRJRRQ1 is an automotive-grade 8 A synchronous buck DC/DC converter operating from a 3 V to 36 V input with 42 V transient tolerance, delivered in a 16-pin VQFN (RJR) package. The Ultra-series LMQ61480-Q1 is optimized for power density and low EMI in automotive power rails. A buck converter (step-down regulator) is a switching voltage regulator that converts a higher input voltage to a lower output voltage using a high-side and low-side power stage switched by a PWM control loop. Within the power management IC hierarchy, the LMQ61480-Q1 sits in the family of point-of-load DC/DC converters feeding microcontrollers, SoCs, and ADAS processors from 12 V or 48 V automotive batteries. Key features include the wide 3 V to 36 V operating input range with transient tolerance up to 42 V, an adjustable output from 1 V to 95% of the input voltage, and pin-selectable light-load mode for efficiency optimization. The device incorporates pin-selectable spread spectrum to reduce EMI peaks, a design intent explicitly stated by TI for the LM6x4xx-Q1 family. The LMQ61480-Q1 belongs to a pin-compatible 6 A/8 A/10 A automotive family (LM62460-Q1, LM61480-Q1, LM61495-Q1 per the TI datasheet), allowing current-rating changes without PCB respin. Synchronous rectification integrates the power FETs, minimizing external components and improving efficiency at 8 A loads, while internal compensation and protection (current limit, thermal shutdown per family datasheet) simplify design-in. Typical applications include automotive infotainment SoC rails, ADAS camera and radar power supplies, body electronics and gateway modules stepping 12 V down to 5 V or 3.3 V, and industrial clusters sharing the same 24 V-class rails. The 8 A rating directly supports multi-core processors and FPGA core rails. Design-wise, keep the switch-node and input capacitor loops tight to exploit the low-EMI layout, and use the pin-selectable spread spectrum when CISPR 25 compliance is required; note the trade-off that forced-PWM or light-load selection affects standby quiescent power. This page synthesizes distributor availability data, drop-in family alternatives, and design notes beyond what the manufacturer datasheet provides.
LMQ66420MA3RXBRQ1 - 2A, 36V Automotive Low-EMI Buck Converter | Texas Instruments
The LMQ66420MA3RXBRQ1 is an automotive-grade, ultra-small synchronous step-down converter from Texas Instruments, designed for 36-V systems delivering up to 2 A. It features integrated VIN bypass and bootstrap capacitors, reducing external component count and PCB area. The device operates over a junction temperature range of -40°C to 150°C and comes in a 14-pin PowerTFQFN (VQFN-FCRLF RXB) package. With a quiescent current of 1.5 µA, it supports always-on automotive applications. This is a buck converter, a type of DC-DC switching regulator that steps down a higher input voltage to a lower output voltage with high efficiency. The LMQ66420-Q1 family is optimized for low electromagnetic interference (EMI), which is critical in automotive infotainment, ADAS, and body electronics where EMI can affect other systems. The LMQ66420MA3RXBRQ1 provides a fixed 3.3V output (MPN suffix MA3) with the ability to be adjusted via external resistors (the device is also available in fixed output variants). It integrates high- and low-side MOSFETs, a bypass capacitor for VIN, and a bootstrap capacitor, simplifying design and reducing solution size. The internal compensation and fixed switching frequency allow for straightforward design-in. Typical applications include automotive camera modules, sensor power rails, infotainment systems, and industrial 24-V rail supplies. Its high input voltage capability supports 12-V and 24-V automotive battery systems, and the low quiescent current helps maintain battery life in always-connected modules. Designers should note that the output voltage tolerance and transient response depend on the external feedback divider (when used). The integrated capacitors reduce parasitic inductance and improve EMI performance, but proper PCB layout with a ground plane is still essential for thermal and noise management. Always verify the complete datasheet specifications for any design.
LMQ66420MC3RXBRQ1 - 36V 2A Low-EMI Automotive Buck | TI
LMQ66420MC3RXBRQ1 is an AEC-Q100 qualified synchronous buck switching regulator from the Texas Instruments LMQ664x0-Q1 family. It accepts an input voltage from 3V to 36V and delivers up to 2A output current in a 14-pin VQFN-FCRLF (RXB) package. The device supports positive adjustable or fixed 1V/3.3V outputs and integrates VIN bypass and CBOOT capacitors, enabling small automotive power solutions with low external component count. A synchronous step-down converter (buck regulator) is a DC-DC switch-mode converter that steps down a higher input voltage to a lower output voltage using high-side and low-side MOSFET switches. In the power management IC hierarchy, a synchronous buck converter is a key building block in power management units for automotive processors, FPGAs, and MCUs. It provides higher efficiency than LDOs when the input-to-output differential is large, at the cost of switching noise. This converter's ZEN 2 technology targets ultra-low EMI for noise-sensitive automotive systems. Key features of the LMQ66420MC3RXBRQ1 include 1.5µA quiescent current, integrated VIN bypass and bootstrap capacitors, MODE/SYNC pin for frequency adjustment and synchronization, AEC-Q100 qualification, and a -40°C to 150°C operating temperature range. The low EMI ZEN 2 architecture reduces the need for external filtering and shielding. The 14-pin VQFN-FCRLF (RXB) package supports compact layouts for camera modules and ADAS sensors. The device is built as an ultra-small synchronous automotive step-down converter. The MODE/SYNC pin can set the frequency or synchronize it to avoid noise-sensitive frequency bands, an important feature for EMI-sensitive applications. NC pins between critical high-voltage pins reduce potential failures and improve pin FMEA, according to TI product information. This converter is ideal for automotive ADAS domain controllers, infotainment systems, gateways, telematics units, camera module power, industrial 24V distributed power, and processor core rails. It efficiently powers SoCs, FPGAs and MCUs from a 12V or 24V bus. Designers should follow TI's layout guidance for low-EMI buck converters: place the input capacitor near the VIN pin, use the exposed thermal pad, and select a shielded inductor sized for 2A output. The integrated VIN bypass capacitor reduces high-frequency loop inductance but does not replace the required external bulk input capacitance.
LMR14030SDDA - 40V 3.5A 2.2MHz Buck Converter | TI
The Texas Instruments LMR14030SDDA is a SIMPLE SWITCHER 40 V, 3.5 A, 2.2 MHz step-down (buck) converter with an integrated high-side MOSFET and just 40 uA quiescent current, housed in an 8-pin HSOIC (DDA) PowerPAD package. A step-down (buck) regulator is a switching DC-DC power converter that transforms a higher input voltage into a lower, regulated output voltage using an internal switch, an inductor, and a diode or synchronous switch. Within the power management IC hierarchy, the LMR14030 sits in the non-synchronous buck converter family, part of TI's SIMPLE SWITCHER line of easy-to-design-in regulators, which itself belongs to the broader category of switching voltage regulators used after upstream AC-DC or unregulated DC sources. Key features include a wide 4 V to 40 V input range that tolerates industrial 24 V rails and automotive load-dump transients, an adjustable output from 0.8 V up to 36 V (30 V on the Q1 variant), and 3.5 A of continuous output current. The 40 uA sleep-mode quiescent current and ultra-low 1 uA shutdown current make it well suited to battery-powered and always-on systems, while the adjustable switching frequency from 200 kHz to 2.5 MHz lets designers trade efficiency against inductor size. Technically, the internally compensated current-mode architecture minimizes external component count and simplifies loop design, a hallmark of the SIMPLE SWITCHER family. The integrated 40 V high-side MOSFET eliminates an external transistor, and the PowerPAD (DDA) package provides a low thermal impedance path to the PCB copper for reliable dissipation at 3.5 A. Typical applications include 24 V industrial automation power conditioning, 12 V/24 V automotive auxiliary rails, and point-of-load conversion from unregulated wall adapters. The wide input range and low IQ directly address these use cases. Design consideration: the switching frequency setting controls inductor ripple current - at 2.2 MHz a compact 4.7 uH inductor works well, but verify thermal performance at high VIN-VOUT differentials. This page synthesizes verified distributor data, drop-in family alternatives, and practical design notes not found in the manufacturer datasheet.
LMR14050SDDA - 40V 5A 2.2MHz Buck Converter | Texas Instruments
The Texas Instruments LMR14050SDDA is a SIMPLE SWITCHER 40 V, 5 A, 2.2 MHz step-down (buck) DC-DC converter with an integrated high-side MOSFET, housed in an 8-pin HSOIC (DDA / SO-PowerPAD-8) package. It accepts a wide 4 V to 40 V input and delivers an adjustable output from 0.8 V to 28 V at up to 5 A. A step-down converter (buck regulator) is a switching voltage regulator that converts a higher input voltage to a lower output voltage using a switching element, inductor, and capacitors. Buck regulators sit within the power management IC hierarchy and offer far higher efficiency than linear regulators, making them the default choice for wide-input industrial and automotive power conditioning. Key features include the 40 uA quiescent sleep-mode current and 1 uA shutdown current for battery-powered designs, an adjustable switching frequency up to 2.2 MHz (RT/SYNC pin) allowing operation above the AM band, internal loop compensation that minimizes external component count, and pulse-skipping eco-mode at light loads for high efficiency across the load range. Technically, the LMR14050 integrates a high-side MOSFET rated for the full 40 V input transient environment, with cycle-by-cycle current limiting, thermal shutdown, and a power-good output flag for rail supervision. The constant-on-time control topology delivers fast transient response and eases compensation across a wide range of output capacitance values. Typical applications include 12 V and 24 V industrial bus power conditioning, automotive battery-front-end pre-regulators feeding downstream point-of-load converters, and battery-powered instrumentation where 40 uA standby current preserves battery life. Design consideration: at 2.2 MHz switching frequency, inductor and capacitor values shrink, but the input voltage ripple and switching losses rise; choose the RT resistor per the datasheet equations and verify thermal performance on the PowerPAD copper pour. This page synthesizes verified distributor data, same-family drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
LMR64010XMFX/NOPB - 40V 1A Boost Converter SOT-23 | TI
The Texas Instruments LMR64010XMFX/NOPB is a current-mode boost switching regulator from the SIMPLE SWITCHER family. It operates from a 2.7V to 14V input and generates an adjustable output from 3V to 40V using an internal 1A power switch, all within a compact 5-pin SOT-23 (DBV/SC-74A) package. A boost converter, also called a step-up regulator, is a type of DC-DC converter that produces an output voltage higher than its input. Within the power management hierarchy (boost converter -> DC-DC converter -> switching regulator -> power management IC -> semiconductor), it is a fundamental building block for generating higher voltage rails from battery or low-voltage bus inputs. Key features include a fixed 1.6 MHz switching frequency that allows very small external inductors and capacitors, an internal 40V-rated switch supporting outputs of 16V or greater, and current-mode control providing fast transient response and simple loop compensation. The minimal power loss of the internal switch enables SOT-23 packaging, delivering industry-leading power density without heatsinking. Technically, the current-mode architecture senses switch current cycle-by-cycle, simplifying compensation and enabling robust enable-based shutdown. Thermal shutdown and switch current-limit protection guard against fault conditions. The high 1.6 MHz operating frequency keeps switching ripple above sensitive audio and analog bands, easing output filtering. Typical applications include OLED display bias supplies, portable battery-powered devices, LCD bias and backlight rails, and general-purpose step-up regulation to 16V-40V rails for sensors, photodiode bias, and RF circuits. Pricing is referenced as of 2026-08-29. Design tip: keep the switch node, output diode, and output capacitor loops short to minimize EMI, use a Schottky diode rated above 40V, and select an inductor with saturation current above the 1A peak switch current.
LMR64010XMFX/NOPB-Q1 - 40V Boost Regulator 1.6MHz | TI
The Texas Instruments LMR64010XMFX/NOPB-Q1 is a SIMPLE SWITCHER high-voltage boost (step-up) switching regulator in a 5-pin SOT-23 (SC-74A/SOT-753) package. It operates from a 2.7V to 14V input and generates adjustable outputs up to 40V using an internal 1A power switch, switching at a fixed 1.6 MHz frequency. The -Q1 suffix denotes an AEC-Q100-qualified variant for automotive applications. A boost converter is a type of switching regulator (DC-DC converter) in the broader power management IC family that steps an input voltage up to a higher regulated output by storing energy in an inductor during the switch on-time and releasing it to the output during the off-time. Boost converters complement LDO linear regulators, which can only step down; the LMR64010 fills the step-up role with far higher efficiency than charge pumps. Key features include the 40V internal switch rating, enabling output rails of 16V or higher from low-voltage inputs; a 1.6 MHz fixed-frequency current-mode control topology that allows small inductors and ceramic capacitors, yielding high power density in the tiny SOT-23 footprint; and minimal internal switch power loss that eliminates the need for a heatsink. The adjustable feedback reference allows any output within range via an external resistor divider. Technically, current-mode control provides fast transient response and straightforward loop compensation, while the 1.6 MHz switching frequency keeps ripple components above sensitive analog bands. Internal cycle-by-cycle current limiting and thermal shutdown protect the device during faults. Typical applications include LCD/LED bias supplies for automotive displays, sensor and amplifier high-voltage rails, white LED backlight drivers, and general-purpose 5V-to-20V+ point loads where a discrete controller would be too complex. The low 2.7V startup floor suits single-cell Li-ion and 3.3V industrial buses. Design tip: keep the switch node, inductor, and output diode loop as short as possible; verify output diode reverse-voltage rating exceeds 40V, and check thermal rise because SOT-23 dissipation is limited.
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.
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.
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.
LT1076CQ#TRPBF - 2A Buck/Boost/Flyback Regulator | Analog Devices
The LT1076CQ#TRPBF is a monolithic bipolar switching regulator from Analog Devices, rated for 2A switch current and designed for buck, boost, and flyback topologies. It operates from input voltages up to 45V and provides an adjustable output from 2.5V to 50V. 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. Housed in a TO-263-6 (D2PAK) package with 5 leads plus tab, it is suitable for surface-mount designs. A switching regulator is a voltage regulator that uses a series element that switches between on and off states to maintain a constant output voltage. Unlike linear regulators, switching regulators achieve high efficiency by storing energy in inductors and capacitors, making them ideal for applications where power dissipation and battery life are critical. The LT1076 belongs to the family of monolithic switching regulators, which integrate the control circuitry and power switch into a single IC, simplifying design and reducing component count. Key features of the LT1076CQ#TRPBF include a 2A switch current rating, a wide input voltage range of 7.3V to 45V, and an adjustable output voltage from 2.5V to 50V. The device operates at a switching frequency of 100kHz, balancing efficiency and component size. It also includes an output monitor and current limit protection, enhancing reliability in demanding applications. The TO-263 package provides excellent thermal performance, with a low thermal resistance that supports continuous operation at high load currents. Technically, the LT1076 uses a classic positive buck topology but includes design innovations that allow it to be configured as a positive-to-negative converter or a flyback converter. The internal oscillator and control circuitry are designed for stable operation across a wide range of input and output conditions. The device's bipolar process technology ensures robust performance and long-term reliability, making it a trusted choice for industrial and automotive power supplies. Typical applications include distributed power systems, battery chargers, and point-of-load converters. The LT1076 is particularly well-suited for industrial control systems, telecom equipment, and automotive electronics where a rugged, high-efficiency switching regulator is required. Its ability to handle both step-down and step-up configurations adds versatility to power supply designs. When designing with the LT1076CQ#TRPBF, ensure proper input and output capacitor selection to minimize ripple and maintain stability. The inductor value should be chosen based on the desired ripple current and switching frequency. Adequate PCB copper area is essential for thermal management, especially at high output currents.
LTC3112EFE#PBF - 15V, 2.5A Sync Buck-Boost DC/DC | Analog Devices
The LTC3112EFE#PBF is a fixed frequency synchronous buck-boost DC/DC converter from Analog Devices (formerly Linear Technology) that delivers up to 2.5A output current from a wide 2.7V to 15V input range. Housed in a 20-pin TSSOP (0.173", 4.40mm width) with exposed pad, this converter uses a unique 4-switch, single inductor architecture to provide low noise and seamless operation whether the input voltage is above, below, or equal to the output voltage. The output is positive adjustable from 2.5V up to 14V, making it highly versatile for battery-powered and multi-rail systems. A buck-boost converter is a type of DC-DC switching regulator that can step up or step down an input voltage to produce a regulated output. It is essential in applications where the input voltage can vary above and below the desired output, such as with batteries that discharge over time. The LTC3112 belongs to the family of switching regulators, which are more efficient than linear regulators for large voltage differences, and it is a key component in power management ICs for portable and industrial devices. Key features include a 2.5A continuous output current, a wide 2.7V to 15V input range, and an adjustable output from 2.5V to 14V. The device operates at a fixed frequency (typically 1.2MHz) and offers high efficiency across a broad load range. It includes internal synchronous switches, eliminating the need for external Schottky diodes, and provides low output ripple for noise-sensitive applications. The LTC3112 also features a shutdown mode that reduces quiescent current to microamperes, extending battery life in portable devices. Technically, the LTC3112 uses a 4-switch architecture with a single inductor, which allows seamless transitions between buck, boost, and buck-boost modes. This design minimizes output voltage glitches during mode transitions, a common issue in traditional buck-boost converters. The device includes soft-start to limit inrush current, current mode control for fast transient response, and thermal shutdown protection. The exposed pad on the TSSOP package aids in heat dissipation, allowing the converter to deliver full 2.5A output without excessive junction temperature rise. Typical applications include generating 3.3V or 5V rails from 1, 2, or 3 Li-Ion cells, backup capacitor stacks, handheld inventory terminals, RF transmitters, 12V synchronous boost converters, multiple power input systems, LED lighting with current regulation, and 12V lead-acid battery to 12V conversion. The wide input range and high output current make it ideal for industrial, automotive, and portable electronics where input voltage varies significantly. When designing with the LTC3112, ensure proper inductor selection (typically 2.2µH to 10µH) and adequate input/output capacitance to maintain stability and low ripple. The exposed pad must be soldered to a copper pour for thermal management. Also, consider the trade-off between efficiency and output ripple when choosing the operating mode.
LTC3112EFE#TRPBF - 15V, 2.5A Sync Buck-Boost DC/DC | ADI
The LTC3112EFE#TRPBF from Analog Devices is a fixed frequency synchronous buck-boost DC/DC converter with an extended input and output range. It delivers up to 2.5A output current from a 20-TSSOP exposed pad package. The unique 4-switch, single inductor architecture provides low noise and seamless operation from input voltages above, below or equal to the output voltage. With an input range of 2.7V to 15V and an adjustable output from 2.5V to 14V, it is ideal for battery-powered and industrial applications. A buck-boost converter is a type of DC-DC converter that can step up or step down an input voltage to a regulated output voltage, regardless of whether the input is higher or lower than the output. This is achieved through a combination of buck and boost topologies, typically using four switches and a single inductor. The LTC3112 belongs to the family of switching regulators, which are power management ICs that convert one DC voltage to another with high efficiency. Unlike linear regulators, switching regulators use inductive energy storage to achieve high efficiency, making them suitable for battery-powered devices where power loss must be minimized. Key features of the LTC3112 include a 2.5A continuous output current, a wide 2.7V to 15V input range, and an adjustable output voltage from 2.5V to 14V. It operates at a fixed frequency of 1.2MHz, allowing the use of small, low-profile inductors and capacitors. The device offers high efficiency up to 95%, and its Burst Mode operation reduces quiescent current to 50uA, extending battery life in light-load conditions. The LTC3112 also includes a power-good indicator, soft-start, and current limit protection. Technically, the LTC3112 uses a 4-switch synchronous rectifier architecture with a single inductor, which minimizes component count and PCB area. The fixed 1.2MHz switching frequency enables a compact solution with low output ripple. The device is designed for low noise operation, making it suitable for noise-sensitive applications such as RF and audio systems. The exposed pad package (TSSOP-20) provides excellent thermal performance, with a thermal resistance of 38°C/W, allowing efficient heat dissipation in high-current applications. Typical applications include portable instruments, battery-powered equipment, industrial power supplies, and point-of-load regulation. The wide input range makes it ideal for systems powered by multi-cell batteries or unregulated wall adapters. The LTC3112's ability to seamlessly transition between buck and boost modes ensures a stable output even as the battery voltage drops below the regulated output. When designing with the LTC3112, it is important to select the inductor and capacitors according to the datasheet guidelines to achieve optimal efficiency and transient response. The exposed pad should be soldered to a large copper area for thermal management. Additionally, the Burst Mode feature can be disabled for applications requiring constant frequency operation.
LTC3112IDE#PBF - 15V, 2.5A Buck-Boost DC/DC | Analog Devices
The LTC3112IDE#PBF is a fixed frequency synchronous buck-boost DC/DC converter from Analog Devices, designed to deliver up to 2.5A output current from a wide input voltage range of 2.7V to 15V. Housed in a 16-pin DFN (4mm × 5mm × 0.75mm) package, this converter uses a unique 4-switch, single inductor architecture to provide low noise and seamless operation when the input voltage is above, below, or equal to the output voltage. This makes it ideal for battery-powered and multi-source systems where the input voltage can vary significantly. A buck-boost converter is a type of DC-DC converter that can step up or step down an input voltage to a regulated output voltage, regardless of whether the input is higher or lower than the output. It is a key component in power management ICs, enabling efficient power conversion in portable electronics, industrial equipment, and automotive systems. The LTC3112 belongs to the family of switching regulators, which are preferred over linear regulators for their high efficiency, especially when the input-to-output voltage difference is large. Key features of the LTC3112 include a programmable output voltage from 2.5V to 15V, a switching frequency that can be set from 300kHz to 2MHz via an external resistor, and a low quiescent current of 40uA in Burst Mode operation. The device also offers a power good indicator, soft-start, and current limit protection. Its high efficiency, up to 95%, minimizes power loss and heat generation, making it suitable for space-constrained designs. The LTC3112 uses a current-mode control architecture with a 4-switch topology, which allows for seamless transitions between buck, boost, and buck-boost modes. This architecture ensures low output voltage ripple and fast transient response, critical for powering sensitive loads such as RF transmitters and microprocessors. The device also includes a precision 0.6V reference and an internal compensation network, simplifying the external component count. Typical applications include generating 3.3V or 5V rails from 1, 2, or 3 Li-Ion cells, backup capacitor stacks, handheld inventory terminals, RF transmitters, 12V synchronous boost converters, multiple power input systems, LED lighting with current regulation, and 12V lead-acid battery to 12V conversion. The wide input range and high output current make it a versatile choice for many power supply designs. When designing with the LTC3112, it is important to select the inductor and capacitors according to the datasheet guidelines to ensure stability and optimal performance. The switching frequency should be chosen to balance efficiency and component size, and proper PCB layout with short, low-inductance paths is essential for minimizing noise and EMI.