Power Management
Subcategories
Products (2,800+)
LM74910H-Q1 - 65V Automotive Ideal Diode Controller | TI
The Texas Instruments LM74910H-Q1 is an automotive ideal diode controller with integrated circuit breaker, undervoltage and overvoltage protection, and fault output, operating from a 3V to 65V input range in a 24-pin VQFN (4x4 mm) package. It drives external back-to-back N-channel MOSFETs in common-drain configuration and is AEC-Q100 qualified for -40C to +125C operation. An ideal diode controller is a power-management IC that replaces a physical diode in power path protection (PPP) and power ORing circuits. Instead of a silicon diode's fixed ~0.7V forward drop, the controller senses current direction and adjusts the gate of an external MOSFET to regulate the forward voltage to millivolts, dramatically reducing conduction loss and heat. Within the power management hierarchy, ideal diode controllers sit alongside hot-swap and eFuse controllers as front-end protection devices guarding automotive ECUs, industrial modules, and server power rails against reverse polarity, load dump, overcurrent, and faults. Key features of the LM74910H-Q1 include 74V absolute maximum rating, reverse input protection down to -65V, and 10.5mV anode-to-cathode forward voltage regulation for near-zero conduction loss. The low -10.5mV reverse detection threshold with fast 0.5us turn-off response blocks reverse current before it can flow. A 20mA peak DGATE drive enables fast MOSFET turn-on, and a 200-kHz analog current sense (ACS) output provides continuous current monitoring. An adjustable overcurrent threshold triggers the integrated circuit breaker, and a low-quiescent-current SLEEP mode conserves battery in always-connected modules. Technically, the LM74910H-Q1 uses a common-drain back-to-back MOSFET topology: one FET blocks reverse current in normal operation, while the pair isolates the load during faults or when input falls outside the programmed UV/OV window. The H-suffix variant offers extended protection headroom suited to 12V and 24V automotive battery rails exposed to ISO load-dump type transients. Fast comparator-based reverse detection minimizes body-diode conduction time, keeping power dissipation low during voltage transients between supplies. Typical applications include automotive reverse-battery and load-dump protection modules, N+1 redundant power ORing in ECUs and domain controllers, and front-end protection for infotainment, ADAS, and telematics units. The fault output simplifies diagnostics reporting to the vehicle host processor. Design consideration: keep the EN pin supply-conditioned rather than tied directly to a raw 12V battery rail if ISO 16750-2 transient immunity must be demonstrated - TI E2E discussions highlight this exact use case, and resistor conditioning with clamping preserves the device through reverse polarity tests. This page synthesizes distributor availability, drop-in alternatives within the LM749x0-Q1 and LM749xx-Q1 families, and practical design notes not consolidated in the manufacturer datasheet.
LM76005RNPR - 60V 5A Sync Step-Down Converter | Texas Instruments
The Texas Instruments LM76005RNPR is a 3.5-V to 60-V, 5-A synchronous step-down DC-DC converter housed in a 30-pin WQFN (RNP) package with exposed thermal pad. It integrates peak-current-mode control, dual MOSFET switches, and a seamless transition between PWM and PFM modes, delivering up to 5 A of continuous output current from input rails as high as 60 V (65 V tolerant for input surge events). A buck (step-down) converter is a switched-mode DC-DC topology that efficiently reduces a higher input voltage to a lower regulated output voltage by periodically storing and releasing energy through an LC filter. The LM76005RNPR belongs to the buck converter family within the broader switch-mode power supply (SMPS) hierarchy, which itself sits under DC-DC converters and the power management IC category. Synchronous variants replace the external Schottky rectifier with an integrated low-side MOSFET, improving efficiency and shrinking board area versus asynchronous designs. Key features include a wide 3.5 V to 60 V input range (with 65 V transient tolerance for automotive load-dump survival), 15 µA quiescent current in regulation, 95% efficiency at 400 kHz (12 V IN, 5 V OUT, 2 A), 92% PFM efficiency at 10 mA load, external clock synchronization, pin-selectable FPWM mode for low-EMI operation, and an adjustable soft-start of 6.3 ms default. Functional safety documentation is available for systems targeting ISO 26262 compliance. The device uses peak-current-mode control with internal compensation, minimizing external component count. Internal MOSFETs are optimized for low RDS(on) across the load spectrum, enabling high efficiency at both light and full loads. A precision reference provides ±1% output voltage accuracy, and seamless PWM-to-PFM transitions extend battery life in always-on applications by dropping quiescent losses. Typical applications include industrial 24 V rail conversion, automotive infotainment and ADAS power, factory automation PLC I/O, battery-powered e-mobility systems, point-of-load regulation downstream of a higher-voltage bus, and ruggedized field equipment. The wide input range makes it especially attractive for systems exposed to wide transients such as 24 V industrial busses and 12 V automotive rails. When designing with this part, ensure the input capacitor is sized to absorb the worst-case load-step ripple while keeping loop bandwidth stable. The exposed pad must be soldered to a continuous ground plane with thermal vias to handle up to 5 A continuous loads. This page synthesizes distributor pricing, drop-in alternative cross-references, and practical design notes not found in the manufacturer datasheet alone, supporting engineers making sourcing and second-source decisions.
LM7805ACT - 5V 1A Fixed LDO Regulator, TO-220 | onsemi
The onsemi LM7805ACT is a monolithic fixed-output positive linear voltage regulator delivering a regulated 5.0 V at up to 1 A of output current, housed in a 3-pin TO-220-3 (TO-220AB) through-hole package with an industry-standard pinout of Input, Ground, and Output (left-to-right when viewed from the front with the tab up). It belongs to the LM78xx family of three-terminal regulators, offers ±2% output tolerance, and operates from a 10 V to 35 V input range with typical 2 V dropout, internal thermal shutdown, internal current limiting, and safe-area compensation that lets it deliver its full rated output when adequately heat-sunk. A linear regulator (LDO - Low-Dropout) is a type of voltage regulator that maintains a stable, low-ripple DC output even as the input voltage varies, by dissipating the excess voltage as heat across a pass element. Within the broader system hierarchy, the LM7805ACT sits in the linear-regulator branch of the power-management IC family, and is favored over switching regulators whenever the application values noise-free output, simplicity, low BOM cost, and fast transient response over efficiency. The 78xx series is the de-facto industry baseline for 5 V, 12 V, and 15 V analog rails. Key features include a 1 A continuous output rating (with peak inrush capability higher for short transients), ±2% output voltage tolerance (the "A" grade, versus ±4% on the non-A version), 2.0 V typical dropout at full load, internal short-circuit current limit, thermal-overload protection, and a TO-220 tab that doubles as the thermal pad. No external components are required beyond input and output bypass capacitors (typically 0.33 µF and 0.1 µF). The device uses a vertical NPN pass transistor architecture with a bandgap reference, Zener-based trimming, and on-chip safe-operating-area compensation. The architecture is intentionally simple - it has no enable pin, no soft-start, and no power-good flag - because the 7805 was designed as a "set-and-forget" rail for analog and digital subsystems where it can be left always-on behind a master switch. Its primary limitation is dropout (cannot produce 5 V from a 5 V rail) and efficiency (Pdiss = (VIN − 5 V) × IOUT, all of which becomes heat). Typical applications include 5 V digital logic supplies, microcontroller and sensor power, hobby/Arduino/Maker boards, USB device supplies, op-amp and ADC reference rails, replacement of legacy linear rails, and any application where a clean, low-noise, fixed 5 V rail is needed from a higher-voltage DC bus. Design consideration: at 1 A load the LM7805ACT dissipates approximately 7 W when dropping 12 V to 5 V, which demands a heatsink rated for at least 10 °C/W or larger copper area on the TO-220 tab. Always place input/output ceramic bypass capacitors close to the pins and respect the SOA of the internal pass transistor at high VIN. This page synthesizes live distributor pricing, parametric drop-in alternatives across onsemi, STMicroelectronics, Microchip, and TI, and practical thermal/layout design notes that go beyond what is in the manufacturer datasheet.
LM7805CT/NOPB - 5V 1.5A Linear Regulator TO-220 | Texas Instruments
The Texas Instruments LM7805CT/NOPB is a 1.5-A, 30-V linear voltage regulator with a fixed +5 V output in a 3-pin TO-220 (NDE) package. It is part of the industry-standard LM78xx family, employing internal current limiting, thermal shutdown, and safe-area compensation that make it essentially indestructible under normal overload conditions. This NOPB suffix variant is lead-free and RoHS compliant, qualifying it for modern manufacturing lines. What is a linear voltage regulator? A linear voltage regulator (also called an LDO when dropout voltage is low, or simply a three-terminal regulator in the LM78xx case) is a power management IC that maintains a constant DC output voltage from a higher, possibly variable DC input. Unlike a switching DC-DC converter, a linear regulator dissipates the difference between VIN and VOUT as heat, so efficiency equals VOUT/VIN. The taxonomy: three-terminal regulator -> linear regulator -> voltage regulator -> power management IC -> semiconductor. The LM78xx family is the most widely used fixed-output linear regulator series in history, with billions of units shipped across industrial, consumer, and hobby markets. Key features include 1.5 A peak output current, 5 V fixed output with typical +/-2% accuracy, 35 V maximum input voltage (per Mouser catalog listing), 2 V typical dropout, and internal thermal overload protection. The TO-220 package provides excellent thermal performance with a tab that can be soldered or screwed to a heatsink for continuous high-current operation. The LM7805CT/NOPB uses a bipolar Darlington pass element with bandgap reference and on-chip resistor dividers. Its safe-area compensation allows momentary output shorts without damage, and the thermal shutdown circuit typically trips around 170 C junction temperature. Quiescent current is typically 5 mA and rises only slightly with load. Typical applications include local 5 V regulation for digital logic (Arduino, microcontroller rails), USB charger / power-bank subsystems, hobby electronics, retrofit 5 V supplies in automotive 12 V systems, and as a quiet post-regulator after a switching converter to clean up ripple. When designing, always check worst-case dissipation (P = (VIN(max) - 5 V) x IOUT(max)) and select a heatsink accordingly. A heatsink is required whenever P exceeds about 1.5 W in free air at 25 C ambient. This page synthesizes distributor pricing, drop-in alternatives, and design notes not found in the manufacturer datasheet alone.
LM7805L-TA3-T - 5V 1A Fixed Positive LDO Regulator | UTC TO-220
The Unisonic Technologies LM7805L-TA3-T is a monolithic fixed positive voltage regulator delivering a fixed 5V output at up to 1A in a TO-220 through-hole package. It belongs to the UTC LM78XX family of 3-terminal regulators and provides the standard 7805 pinout (IN, GND, OUT) with a typical dropout voltage of 2V and a maximum input voltage rating of 35V. Output ripple rejection is specified at 80 dB at 120 Hz and output noise is 40 uV typical across the audio band, making the LM7805L-TA3-T well-suited for powering analog circuitry on a 5V rail. What is a linear voltage regulator? A linear voltage regulator is a power management integrated circuit that maintains a constant output voltage by varying its internal pass-element resistance. Within the broader taxonomy, the LM7805L-TA3-T is a fixed-output LDO/standard linear regulator -> linear regulator -> voltage regulator -> power management IC -> semiconductor. Compared to switching regulators, linear regulators add no switching noise to the output rail and require minimal external components, at the cost of lower efficiency when VIN-VOUT is large. Key features include built-in over-current protection (OCP) and over-temperature protection (OTP), fixed 5V ±4% output tolerance, an operating junction temperature range of -20C to +125C, and a quiescent current of approximately 8 mA. The bipolar pass transistor architecture provides robust short-circuit immunity and predictable thermal behavior under sustained load. Technically, the LM7805L-TA3-T uses a bandgap reference and error amplifier to drive an NPN Darlington pass element, with the dropout determined by the Vce(sat) of the Darlington plus base-drive headroom. The 80 dB PSRR at 120 Hz is more than sufficient to reject the dominant ripple component from a 50/60 Hz transformer-rectifier input stage. Typical applications include 5V logic supply rails for microcontrollers and TTL/CMOS logic, USB device power from a 12V or 24V bus, hobbyist and educational electronics, and as a post-regulator following a switching converter to clean up residual switching noise. When designing with this part, calculate worst-case power dissipation PD = (VIN - 5V) × IOUT and verify junction temperature using θJA = 100 °C/W (free-air) or with an attached heatsink; at 12V/1A the regulator must dissipate 7W and requires a heatsink. This page consolidates distributor pricing for the LM7805L-TA3-T, qualified drop-in 5V/1A TO-220 alternatives, and practical PCB layout notes beyond what the manufacturer datasheet alone provides.
LM7805MPX/NOPB - 1.5A, 30V Fixed 5V Linear Regulator | Texas Instruments
The Texas Instruments LM7805MPX/NOPB is a fixed-output positive linear regulator that delivers a stable 5.0 V at up to 1.5 A, packaged in a 4-pin SOT-223 (DCY) surface-mount format. It accepts input voltages from approximately 7 V to a maximum of 30 V and provides 1.5 A continuous output current, with internal thermal overload and short-circuit protection built into the silicon. A linear regulator is a type of voltage regulator that maintains a constant DC output voltage by dissipating excess input-to-output voltage as heat. Within the power management IC hierarchy, the LM7805 belongs to the linear regulator family, sitting above switching regulators in simplicity (no inductor needed) but below LDO regulators in dropout performance. This trade-off is why 7805-series regulators remain popular as simple, rugged 5 V rails. Key features include a fixed 5 V output (no external feedback resistors required), 1.5 A continuous output current, internal thermal shutdown and output short-circuit protection, and a wide 7 V to 30 V input operating range. The SOT-223 package offers a tab that doubles as a thermal pad, allowing direct soldering to PCB copper for heatsinking. Architecturally, the LM7805 uses a classic bipolar pass-transistor topology with a bandgap-derived reference. Unlike an LDO, it requires at least 2 V of input-to-output headroom to maintain regulation, which means it dissipates significant power at high VIN. The output impedance is low and line/load regulation are tight, giving clean DC for digital and analog loads. Typical applications include microcontroller 5 V rails, sensor signal protection, hobby electronics, and any 5 V supply where simplicity, robustness, and low cost outweigh efficiency. A practical design consideration is thermal dissipation. At VIN = 12 V and 1 A load, the part dissipates 7 W, so the SOT-223 tab MUST be soldered to a sufficient copper area (typically >=1 square inch) to keep Tj within safe limits. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
LM7812CT - 12V 1A Positive Fixed LDO Regulator TO-220 | onsemi
The onsemi LM7812CT is a 12V positive fixed-output linear voltage regulator (LDO) delivering up to 1A of load current in a 3-pin TO-220 through-hole package. It accepts input voltages up to 35V (typical operating range 14.5V to 27V), provides a regulated 12V output with ±4% tolerance, and includes internal thermal overload protection, safe-area (SOA) current limiting, and output transistor safe-area compensation. What is a linear voltage regulator? A linear voltage regulator is a semiconductor device that maintains a constant DC output voltage by dissipating the difference between input and output as heat. The LDO (Low Dropout) variant can regulate with very small VIN-VOUT headroom. The LM7812 belongs to the 78xx positive fixed regulator family — a class of regulators characterized by three pins (Input, Ground, Output), fixed output voltages in the 78xx series (5V, 6V, 8V, 9V, 12V, 15V, 18V, 24V), and integrated protection. This family sits within the broader hierarchy of linear regulators → voltage regulators → power management ICs. Key features include 1A continuous output, internal thermal shutdown, and a typical output impedance of 0.01 Ω at 1 kHz. The device requires no external components beyond input and output bypass capacitors, simplifying PCB layout for legacy through-hole designs. Ripple rejection is typically 55 to 72 dB depending on output voltage and capacitor selection. The LM7812CT uses a bipolar pass-transistor architecture with a bandgap-derived voltage reference and on-chip error amplifier. Thermal performance is governed by TO-220 package thermal resistance (~50 °C/W junction-to-ambient free-air, or ~5 °C/W with a proper heatsink). The device is specified for 0 °C to +125 °C junction temperature operation. Typical applications include ATX peripheral power rails, hobby electronics, industrial 24V-to-12V step-down rails, motor driver auxiliary supplies, and replacement boards for legacy linear designs. The TO-220 package accepts hand-soldering and standardized heatsink mounting. When designing with this device, observe proper heatsinking for dissipation above 2W. Place input and output capacitors close to the pins to suppress oscillation and improve transient response. For higher-current or switching applications, consider an LM2596 or LM78S12 instead.
LM7812L-TA3-T - 12V 1A Fixed LDO Regulator, TO-220 | UTC
The Unisonic Technologies LM7812L-TA3-T is a monolithic fixed-voltage positive linear regulator delivering a nominal 12V output at up to 1A of load current, housed in a 3-pin TO-220 through-hole package (TA3-T suffix denoting the TO-220 lead-formed tape-and-ammo packing option). It accepts input voltages between 14.5V and 35V and provides internal thermal shutdown and over-current protection, making it suitable for cost-sensitive industrial, consumer, and hobby applications where a clean, stable 12V rail is required. A linear regulator - and the 78xx family specifically - is a type of power-management IC that drops a higher DC input voltage down to a fixed, regulated lower DC output voltage using a pass transistor and on-chip bandgap reference. In the broader system hierarchy, the LM7812 sits below switching converters in efficiency but excels in simplicity, low noise, and zero EMI, which is why it remains a default choice for analog rails, op-amp supplies, relay coils, fan drivers, and microcontroller peripheral power. Key specifications include a typical output voltage of 12V (regulated to within approximately +/-4% across line, load, and temperature), 1A continuous output current, a quiescent current of 8 mA, ripple rejection of 72 dB at 120 Hz, and an output noise floor of approximately 75 uV. The TO-220 package provides a tab that can be soldered or clipped to a PCB copper pour or external heatsink, supporting reliable operation at the upper end of the input-voltage and load-current range. The regulator uses a series NPN pass element with on-chip bandgap reference and error amplifier, providing closed-loop regulation without external feedback components. Its 72 dB ripple rejection at 120 Hz effectively attenuates rectified mains hum and downstream switching noise from upstream converters. Typical applications include 12V power rails for op-amps, relays, fans, LED drivers, motor drivers, microcontroller peripherals, and hobby robotics. The wide input range also supports industrial 24V systems with adequate headroom and 12V battery-powered equipment such as lead-acid battery stacks. When designing with this device, calculate power dissipation as (VIN - VOUT) x IOUT and ensure the TO-220 tab is heatsinked when dissipation exceeds approximately 1.5W. A minimum 0.33 uF input capacitor and 0.1 uF output capacitor are recommended for stability, per the UTC datasheet. This page synthesizes distributor pricing, drop-in alternatives across multiple manufacturers, and practical design notes not found in the standalone manufacturer datasheet, enabling engineers to source and qualify the LM7812L-TA3-T with confidence.
LMD18200T/NOPB - 3A 55V H-Bridge Motor Driver | Texas Instruments
The Texas Instruments LMD18200T/NOPB is a 3A continuous (6A peak) H-bridge motor driver IC designed for motion control applications, housed in an 11-pin TO-220 power package. Key headline specifications are 3A continuous output current, 55V absolute maximum supply voltage, and integrated DMOS power devices on a multi-technology Bi-CMOS/DMOS monolithic structure. An H-bridge motor driver is a four-switch power stage that allows a DC motor or stepper winding to be driven in both directions from a single supply rail. The H-bridge sits within the broader hierarchy of motor driver ICs -> motion controllers -> power management ICs -> semiconductor ICs, and is a foundational building block for brushed DC and bipolar stepper motion systems. By integrating both the high-side and low-side switches, plus direction and PWM control logic, an H-bridge IC eliminates the discrete MOSFET design effort for sub-50V applications. Key features of the LMD18200T/NOPB include continuous 3A output current with 6A peak capability, a wide 12V to 55V supply range, built-in shoot-through protection, thermal shutdown, and a low-loss current-sense output that eliminates the need for a discrete sense resistor. The Bi-CMOS/DMOS process combines bipolar/CMOS logic with DMOS power transistors on a single die, achieving typical R_DS(on) values in the sub-0.3-ohm per switch region. The TO-220-11 package provides a thermally efficient through-hole footprint with formed leads optimized for vertical mount with an external heatsink. The device accepts TTL/CMOS-compatible DIRECTION and PWM inputs and integrates anti-shoot-through dead-time control, so external microcontroller logic is sufficient for full bidirectional speed and position control. Internal charge-pump-driven high-side switches allow 100% duty-cycle operation - critical for accurate low-speed DC motor control where PWM-frequency ripple cannot be tolerated on the output stage. Typical applications include brushed DC servo motor drives, bipolar stepper motor amplifiers (one LMD18200 per winding), robotic actuator drivers, valve and solenoid controllers, and industrial automation motion subsystems. The device is well suited to industrial 24V and 36V bus systems where its 55V rating provides sufficient transient margin. When designing with the LMD18200T/NOPB, plan for an external heatsink sized for continuous worst-case dissipation: at 3A and a 24V supply, internal conduction losses alone can exceed 4W. Place a 1uF or larger bulk decoupling capacitor close to the supply pins and add a 0.1uF ceramic high-frequency bypass to suppress the charge-pump switching noise that otherwise couples back to the motor terminals. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes for the LMD18200T/NOPB that are not present in the manufacturer datasheet alone, and that are tailored to help engineers select, source, and qualify the part quickly.
LMG2104R022 - 100V 2.2mΩ GaN Half-Bridge Power Stage | TI
The Texas Instruments LMG2104R022 is a 100 V, 2.2 mΩ half-bridge GaN power stage with an integrated gate driver and built-in protection, supplied in a 4.5 mm × 7.0 mm QFN-18 (VBNR) package. It combines two enhancement-mode gallium nitride (GaN) FETs and a smart gate-driver IC into one compact module, delivering the low-loss switching, high slew-rate control, and protection features expected of a modern GaN integration. A GaN half-bridge power stage is an integrated circuit (IC) that contains the two power transistors (high-side and low-side) plus their driver circuitry in a single package. GaN FETs offer lower switching losses, lower gate charge, and zero reverse-recovery charge compared with silicon MOSFETs, making the device category - the GaN power stage - especially attractive for high-frequency, high-density DC-DC converters, Class-D audio amplifiers, and motor drives. Key features of the LMG2104R022 include a 2.2 mΩ typical on-resistance, 100 V drain-to-source rating, integrated bootstrap diode, under-voltage lockout (UVLO), over-current protection, and overtemperature protection. The smart switching features reduce EMI through controlled dV/dt and minimize dead time, which raises efficiency and shrinks the magnetics bill of materials in switched-mode power supply (SMPS) designs. Architecturally, the half-bridge topology is implemented with a high-side GaN FET and a low-side GaN FET, both e-mode (normally-off) devices. The silicon gate driver accepts low-voltage CMOS inputs and generates the rail-to-rail gate signals required to fully enhance the GaN transistors. Integrated dead-time control prevents shoot-through, while the on-package exposed pad provides a low thermal-resistance path to PCB copper. Typical applications include 48 V telecom and server point-of-load (POL) converters, industrial buck and buck-boost converters, Class-D audio amplifiers, BLDC motor drives, and USB-PD power adapters. The 100 V rating tolerates wide-input telecom rails as well as 24 V industrial buses. When designing with this part, ensure that the bootstrap capacitor and high-side bypass capacitor follow the manufacturer layout guidance in the datasheet. Keep the switching-node loop area minimal to avoid parasitic ringing - the integrated driver is designed to suppress most of it, but PCB layout discipline is still essential. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
LMG2104R044 - 100V 4.4mΩ GaN Half-Bridge Power Stage | TI
The Texas Instruments LMG2104R044 is a 100 V, 4.4 mΩ half-bridge GaN power stage with an integrated gate driver, integrated bootstrap, and enhanced protection features, supplied in a 5 mm x 4 mm QFN package. It combines two enhancement-mode GaN FETs (high-side and low-side) with the driver circuitry needed to switch them cleanly at high frequency, providing up to 100 V drain-to-source blocking and a typical on-resistance of 4.4 mΩ per FET at room temperature. A GaN (Gallium Nitride) half-bridge power stage is a fully integrated switching building block that places two GaN transistors and their gate drive on one substrate. Compared to discrete Si MOSFET half-bridges, GaN devices offer much lower switching loss, lower gate charge, and zero reverse-recovery charge, allowing converters to switch at 1 MHz and above. The half-bridge power stage sits in the broader power electronics hierarchy as: GaN FET -> GaN half-bridge -> power stage -> DC-DC converter / motor driver / class-D amplifier. The LMG2104R044 also integrates protection and a proprietary bootstrap regulator, simplifying the high-side gate-drive design that normally requires an external bootstrap diode and bias supply. Key specifications include 100 V drain-source blocking voltage, 4.4 mΩ typical Rds(on), integrated half-bridge topology, TTL-compatible 3.3 V / 5 V logic inputs, integrated bootstrap voltage regulator, and smart switching features. Smart-switching technology auto-tunes dead-time to minimize body-diode conduction and prevents simultaneous turn-on of both FETs, increasing efficiency and reducing EMI. The device operates from a single supply and supports high-side and low-side PWM inputs with internal level shifting. The LMG2104R044 uses TI's enhancement-mode GaN-on-Si process and integrates the gate driver close to the die to minimize parasitic loop inductance. A proprietary bootstrap voltage control regulates the high-side gate within the safe operating range regardless of VCC level. Internal protection features include undervoltage lockout on both VCC and the bootstrap rail, thermal shutdown, and short-circuit / overcurrent protection that de-glitches the gate driver when excessive current is detected. Typical applications include 48 V to point-of-load DC-DC converters, class-D audio amplifiers, motor drives, telecom brick converters, and high-density synchronous rectification. The integrated driver and protection features significantly reduce PCB area versus equivalent discrete half-bridge implementations. When designing with the LMG2104R044, place input ceramic bypass capacitors as close as possible to the power and signal pins to minimize high-frequency loop inductance. The exposed pad must be soldered to a sufficiently large copper pour for thermal relief - GaN power stages can switch at MHz frequencies and dissipate meaningful conduction loss at high currents. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
LMG2652H - 650V 140mΩ GaN Half-Bridge With Integrated Driver | TI
The Texas Instruments LMG2652H is a 650V 140mΩ GaN power-FET half bridge with integrated gate drivers, bootstrap FET, and high-side gate-drive level shifter in a 6mm x 8mm QFN package. It delivers integrated current-sense emulation, low-side and high-side gate drive, and a smart-switched GaN bootstrap FET with no diode forward-voltage drop and zero reverse-recovery charge. The device targets switch-mode power supplies up to 650V with simplified PCB layout. A GaN (Gallium Nitride) half-bridge power stage is a type of integrated power semiconductor that combines two enhancement-mode GaN FETs in a half-bridge configuration with all necessary drive, level-shifting, and bootstrap support. Within the broader hierarchy of power electronics, GaN half-bridges sit between discrete GaN FETs + external driver ICs and fully integrated digital point-of-load (POL) modules, offering a compact and high-efficiency building block for high-voltage converters. Key features include a 650V drain-to-source rating, 140mΩ on-resistance per FET, support for converter light-load efficiency and burst-mode operation with low quiescent current, and fast start-up times. The integrated current-sense emulation eliminates the need for an external current-sense resistor or current transformer on the low side, reducing BOM count and power loss. The smart bootstrap switch avoids overcharging of the high-side supply during transients and removes the conventional bootstrap diode forward drop. The LMG2652H combines 650V GaN technology with TI's integrated driver IP to achieve faster switching edges, lower switching losses, and smaller magnetics compared with silicon MOSFET half bridges. The architecture is designed for hard-switched and soft-switched topologies including active-clamp flyback, totem-pole PFC, and high-frequency isolated DC-DC converters. The 6mm x 8mm QFN package has an exposed thermal pad enabling direct PCB cooling without an external heatsink at moderate power levels. Typical applications include switch-mode power supplies, USB-PD and laptop adapters, telecom and server AC-DC front ends, telecom DC-DC converters, and Class-D audio amplifiers. The 650V rating and high switching frequency capability make this device especially attractive for totem-pole PFC and active-clamp flyback designs where synchronous rectification and high efficiency are required. When designing with the LMG2652H, ensure the PCB layout minimizes high-side gate-drive loop inductance and places the bootstrap capacitor close to the BST pin. Confirm that peak switching node dV/dt stays within the device rating during dead-time transitions, and observe the recommended UVLO and start-up sequencing from the LMG2652H datasheet to avoid unwanted half-bridge shoot-through. This page synthesizes distributor pricing, drop-in alternatives, and practical design guidance distilled from the TI datasheet and third-party reference designs - information not available on a single distributor product page.
LMG3105R017 - 100V 1.7mΩ GaN FET Power Stage | Texas Instruments
The Texas Instruments LMG3105R017 is a 100V, 1.7mΩ Gallium Nitride (GaN) FET power stage with an enhanced integrated gate driver, protection features, and smart-switching capability, packaged in a 6.5mm × 4mm lead-free VQFN-FCRLF surface-mount module. It delivers up to 126A pulsed current, integrates a high-frequency GaN driver optimized for the GaN FET, and removes bond-wire inductance for cleaner high-frequency switching in hard-switched or soft-switched topologies. What is a GaN power stage? A GaN power stage is a power-management IC that co-integrates a gallium-nitride enhancement-mode transistor and its gate driver inside one package. Compared to silicon MOSFETs, GaN FETs offer lower on-resistance per die area, near-zero reverse-recovery charge, and faster switching edges. A power stage (versus a bare die) brings the driver adjacent to the FET, which minimizes the gate-loop inductance and lets the device switch at high dV/dt while remaining rugged. GaN power stages sit in the power-conversion signal chain as the final switching element in buck, boost, half-bridge, and full-bridge converters used in power management. Key features include a 1.7mΩ typical on-resistance, 100V continuous drain-source voltage (120V pulsed), 6.7ns typical propagation delay, TTL-compatible 3.3V/5V logic inputs, integrated bootstrap diode, and built-in under-voltage lockout (UVLO), over-current protection (OCP), and thermal shutdown. The integrated smart-switching feature tailors dead-time control for maximum efficiency in half-bridge and synchronous-rectifier topologies. Technically, the LMG3105R017 uses TI's GaN-on-Si process with a high-side level shifter, allowing direct PWM input from a controller. The bond-wire-free package minimizes parasitic inductance in the switching loop, enabling MHz-class switching frequencies with low EMI. The integrated gate driver is matched to the GaN FET threshold, providing tightly controlled dv/dt immunity and eliminating the need for an external gate resistor. Typical applications include 48V telecom and server point-of-load converters, industrial motor drives, solar micro-inverters, Class-D audio amplifiers, and high-frequency DC-DC brick replacements where efficiency and power density matter. The low Rds(on) of 1.7mΩ minimizes conduction loss even at high current. Design consideration: route the high-side bootstrap capacitor directly between the BST and SW pins with minimum loop area to avoid noise-induced false-triggering of the high-side driver. Place a 0.1µF X7R ceramic bypass capacitor as close as possible to the VCC pin. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
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.
LMP8646EB - Precision Current Limiter Evaluation Board | Texas Instruments
The Texas Instruments LMP8646EB is an evaluation board for the LMP8646, a precision current limiter housed in a 6-pin SOT-23 (DBV) package on the board itself. The EB (evaluation board) ships with an LM3102 step-down switching regulator capable of supplying 2.5 A, paired with the LMP8646 current-limit IC to demonstrate a fully functional current-limited power supply. The LMP8646 detects small differential voltages across an external sense resistor in the presence of high common-mode voltages. A precision current limiter is a closed-loop analog IC that monitors the voltage across a sense resistor in series with a load and dynamically adjusts the feedback path of an upstream regulator to clamp load current at a programmable threshold. Within the power-management IC hierarchy, current limiters sit between simple fuses/PTVs (one-shot) and complex hot-swap controllers, offering fast (<1 us response), repeatable, resettable protection ideal for hot-swap, USB, PoE, and industrial load circuits. Key features of the LMP8646 silicon include a wide -2 V to +76 V common-mode input range, configurable gain (5 fixed internal settings: 1, 10, 20, 50, 100) and adjustable bandwidth via the BWL pin, and an open-drain FLAG output that asserts when the current-limit threshold is reached. The EB showcases all of these features through onboard test points, jumpers, and a default 100 mA limit set by RSENSE. Typical applications include hot-swap protection in -48 V telecom and 24 V industrial rails, precision current source/sink circuits, battery charging current limiting, and high-side current sensing in PLC and motor-drive systems. The combination of high common-mode range and millivolt-level offset makes the LMP8646 a popular reference for 4-20 mA loop protection. When designing with this evaluation board, engineers should verify that RSENSE power dissipation (I^2 x R) is within rated limits and that upstream regulator loop compensation remains stable under current-limit foldback. Refer to the LMP8646 datasheet for gain-selection trade-offs and the EB user's guide (SNVA594) for jumper-default configurations. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, enabling faster evaluation and design-in decisions for engineers working on precision current-limiting applications.
LMQ61460AASQRJRRQ1 - 36V 6A Automotive Buck Converter
The Texas Instruments LMQ61460AASQRJRRQ1 is an automotive-grade, 6 A synchronous step-down DC-DC buck converter with a 3 V to 36 V input range, 42 V transient tolerance for 400 ms load dump, and a 14-pin VQFN-HR (RJR) package with integrated bypass capacitors. It provides low-noise, low-EMI power conversion for demanding automotive and industrial systems. A synchronous buck converter is a switching voltage regulator that uses integrated high-side and low-side MOSFETs with an external inductor to step a higher DC input voltage down to a lower regulated output. Within the power-management hierarchy, it combines the efficiency of a switching regulator with the compact footprint of an integrated power solution. The LMQ61460AASQRJRRQ1 supports output adjustment up to 34.2 V and continuous current up to 6 A, making it useful for 12 V and 24 V vehicle systems, industrial buses, cameras, radar modules, and infotainment equipment. Key features include the MINT, or Mitigated Interference and Noise Technology, architecture for reduced electromagnetic interference. Integrated input bypass capacitors reduce input-loop parasitics and can shrink the external component count. Soft recovery from dropout helps prevent output overshoot when the input voltage collapses. The higher-frequency AAS option supports smaller inductors, while the device’s automotive qualification and -40 °C to +150 °C junction-temperature range support harsh operating environments. The synchronous topology improves conversion efficiency compared with a linear regulator when the input-to-output voltage difference is substantial. Integrated high-side and low-side MOSFETs reduce external switching-stage complexity, while the integrated bypass capacitors help contain high-current switching loops. The 42 V transient tolerance eases protection design in 12 V automotive systems exposed to load-dump events, although external protection and validation remain essential. Typical applications include automotive body electronics, ADAS camera and radar modules, 12 V and 24 V industrial point-of-load supplies, USB or infotainment front ends, and low-noise embedded power rails. In a typical buck circuit, the inductor and output capacitors are placed close to the device, while input capacitors and the exposed thermal pad are connected to adequate copper. At 36 V input and 6 A output, thermal design is a primary concern. The VQFN-HR exposed pad should be soldered to a substantial copper pour to reduce junction temperature and improve reliability. Verify inductor saturation current, MOSFET losses, capacitor ripple-current capability, and transient response using the manufacturer’s recommended compensation and layout guidance. This page combines verified distributor pricing, package information, pin-compatible alternatives, and practical design considerations for engineers evaluating low-EMI automotive buck converters.
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.
LMR14030SSQDDARQ1 - 40V, 3.5A Automotive Buck Converter | TI
The Texas Instruments LMR14030SSQDDARQ1 is a SIMPLE SWITCHER® 40-V, 3.5-A, 2.2-MHz step-down (buck) DC-DC converter with an integrated 76 mΩ high-side MOSFET, housed in an 8-pin SO PowerPAD (DDA) package. It accepts an input voltage range of 4 V to 40 V and produces an adjustable output from 0.8 V up to 28 V at up to 3.5 A continuous load current, with only 40 µA typical quiescent current. The AEC-Q100 Grade 1 qualification (–40 °C to +125 °C) targets automotive power-conditioning applications from unregulated battery rails. A buck converter (step-down switching regulator) is a switch-mode DC-DC topology that uses an inductor and capacitor energy transfer to produce a lower, regulated output voltage from a higher input rail. Compared with linear regulators, buck converters achieve much higher efficiency (typically >85%) at large VIN–VOUT deltas, while LDO-style regulators waste VIN–VOUT as heat. The LMR14030 belongs to the SIMPLE SWITCHER® family — a Texas Instruments line of easy-to-use, internally-compensated switching regulators that minimize external component count for industrial and automotive designs. Key features include 40 µA IQ at no load (extending standby time in always-on automotive subsystems), 200 kHz–2.5 MHz switching frequency range (programmable via RT resistor, enabling optimization between efficiency and solution size), internal soft-start, cycle-by-cycle over-current protection, thermal shutdown, and frequency foldback at high duty cycle. The 8-pin SO PowerPAD package exposes a thermal pad that pulls θJA down to roughly 40 °C/W on a standard 4-layer JEDEC board, supporting 3.5 A continuous output without external heatsinking. Typical applications include automotive infotainment, ADAS sensor power, body electronics (lighting, mirror, HVAC), industrial 24-V rail conditioning, and battery-powered point-of-load regulation. The wide 4-V to 40-V input range survives 36-V load-dump transients common in 12-V automotive systems. The 2.2-MHz switching frequency falls above the AM band, avoiding audible interference in audio subsystems. When designing, choose the inductor based on the ripple-current trade-off (typically 20–40% of IOUT) and select the input/output ceramic capacitors with sufficient RMS current rating. The exposed pad must be soldered to a sufficient copper pour to keep junction temperature within the 150 °C thermal shutdown limit.