Voltage Regulators
A voltage regulator is an electronic device that maintains a constant output voltage level, regardless of changes in the input voltage or load conditions. These devices are commonly used to provide a stable power supply to electronic circuits, as well as to protect them from voltage spikes and surges. There are several types of voltage regulators, including linear, switching, and pulse width modulation (PWM) regulators, each with its own set of characteristics and applications. Linear regulators, for example, are simple and efficient, but have a relatively low switching speed and can only provide a limited output current. Switching regulators, on the other hand, have higher switching speeds and can provide a higher output current, but are more complex and require additional components. In addition to their use in power supplies and voltage protection, voltage regulators are also used in a wide range of other applications, including motor control, battery charging, and instrumentation. Flux.ai has the world's largest community-driven public library of voltage regulators, with footprints, symbols, datasheets, and simulation models for a wide range of devices. Whether you're a designer, engineer, or hobbyist, you can find the resources you need to get your project up and running quickly and efficiently.
LM51772RHAR
Buck-Boost Regulator Positive Output Step-Up/Step-Down I2C DC-DC Controller IC 40-VQFN (6x6) The LM51772RHAR is a high-performance multi-phase bidirectional buck-boost controller designed for power conversion systems requiring efficient energy transfer between two voltage domains. The device supports seamless operation in both step-up and step-down modes and is optimized for battery-powered, automotive, industrial, and energy storage applications. The controller enables bidirectional current flow, making it suitable for battery charging, backup power systems, supercapacitor management, and high-power USB Type-C power delivery applications. The device integrates advanced control architecture for high efficiency across a wide operating range while supporting programmable current regulation, voltage regulation, and protection features. Multi-phase capability allows reduced input and output ripple currents, improved thermal distribution, and higher overall power capability. The controller supports external MOSFETs for scalable power design flexibility and includes comprehensive monitoring and fault management functions. The LM51772RHAR is designed for operation in demanding environments with robust protection features including overvoltage protection, undervoltage lockout, cycle-by-cycle current limiting, thermal shutdown, and fault reporting. Its flexible configuration and high integration level reduce external component count and simplify implementation in high-density power systems. Key Features Bidirectional synchronous buck-boost controller architecture Supports power transfer in both forward and reverse directions Multi-phase operation for increased power capability and reduced ripple Wide input and output voltage operating range High-efficiency synchronous control using external MOSFETs Programmable current and voltage regulation Peak and average current control capability Seamless transition between buck, boost, and buck-boost operating modes Integrated current sensing support Programmable switching frequency synchronization Phase interleaving support for thermal and ripple optimization External clock synchronization capability Soft-start and controlled startup sequencing Comprehensive fault detection and protection functions Overcurrent protection and short-circuit protection Overvoltage and undervoltage protection Thermal shutdown protection Fault status reporting and system monitoring support Designed for automotive and industrial power applications Compact thermally enhanced package Typical Applications Bidirectional battery charging systems Energy storage systems Automotive dual-battery architectures USB Type-C Power Delivery systems Backup power and UPS systems Supercapacitor charging and balancing Industrial DC power conversion Renewable energy power management High-power portable electronics Telecom and server power systems Electrical Characteristics Wide operating supply voltage range High switching frequency operation capability High-current multi-phase scalability Precision current regulation accuracy Low standby power consumption High-efficiency synchronous rectification support Programmable dead-time and switching parameters Stable operation across wide temperature range Package Information Package Type: VQFN Package Suffix: RHA Thermally enhanced exposed pad package Surface-mount implementation Suitable for automated assembly processes #commonpartslibrary #integratedcircuit #powermanagement #buckboost #dcdcswitchingcontrollers
22 Uses0 StarsTPS62840DLCR
Buck Switching Regulator IC Positive Adjustable 1.8V 1 Output 750mA 8-VFDFN The TPS62840 is a high-efficiency step-down converter with ultra-low operating quiescent current of typically 60 nA. The device contains special circuitry to achieve just 120 nA IQ in 100% mode to further extend battery life near the end of discharge. The device uses DCS-Control to cleanly power radios and operates with a typical switching frequency of 1.8 MHz. In Power-Save Mode, the device extends the light load efficiency down to a load current range of 1 μA and below. 16 predefined output voltages can be selected by connecting a resistor to pin VSET, making the device flexible for various applications with a minimum amount of external components. The STOP pin of the device immediately eliminates any switching noise in order to take a noise-free measurement in test and measurement systems. The TPS62840 provides an output current of up to 750 mA. With an input voltage of 1.8 V to 6.5 V, the device supports multiple power sources such as 2S to 4S Alkaline, 1S to 2S Li-MnO2 , or 1S Li-Ion/LiSOCl2 Features 1• 60-nA operating quiescent current • 100% duty-cycle mode with 120-nA IQ • Input voltage range VIN from 1.8 V to 6.5 V • Output current up to 750 mA • RF friendly DCS-Control™ • 80% efficiency at 1 µA IOUT (3.6 VIN to 1.8 VOUT) • 16 selectable output voltages via VSET pin • Auto transition PFM/PWM or forced-PWM mode • Selectable forced PWM and STOP modes • Output discharge function • 25-nA shutdown current #commonpartslibrary #integratedcircuit #powermanagement #voltageregulator
288 Uses0 StarsAP2114H-3.3TRG1
Linear Voltage Regulator IC Positive Fixed 1 Output 1A SOT-223-3 General Description The AP2114H-3.3TRG1 is a low dropout linear voltage regulator designed to provide a stable fixed output voltage for low-noise and power-sensitive electronic applications. The device is optimized for high current capability, low quiescent current operation, and reliable thermal performance. It is suitable for portable electronics, embedded systems, communication equipment, consumer devices, and industrial control applications where stable power regulation is required. The regulator incorporates internal protection functions including over-current protection and thermal shutdown to improve operational reliability and system safety. The component is supplied in a surface-mount SOT-223 package suitable for automated PCB assembly processes. Device Type Low Dropout Linear Voltage Regulator with Enable Function Output Configuration Positive Fixed Output Nominal Output Voltage 3.3 V Maximum Output Current 1 A minimum continuous load current capability Input Voltage Range Operates from low-voltage DC input supplies up to 6 V maximum Dropout Voltage Low dropout operation suitable for battery-powered and low-headroom applications Output Accuracy High precision regulated output voltage with tight tolerance characteristics Quiescent Current Low standby current for power-efficient system operation Power Supply Rejection High ripple rejection performance for low-noise output regulation Protection Features Integrated over-current protection Thermal shutdown protection Short-circuit protection Operating Temperature Range Suitable for industrial temperature operating conditions from negative forty degrees Celsius to positive eighty-five degrees Celsius Package Information Surface-mount SOT-223 package Mounting Method Surface Mount Technology Applications LCD monitors LCD televisions Set-top boxes Portable electronics Embedded controllers Industrial electronic systems Low-noise power supply applications #CommonPartsLibrary #IntegratedCircuit #PowerManagement
18 Uses0 StarsTPS259814ARPWR
Electronic Fuse Regulator High-Side 10A 10-VQFN-HR (2x2) The TPS25981xx family of eFuses is a highly integrated circuit protection and power management solution in a small package. The devices provide multiple protection modes using very few external components and are a robust defense against overloads, short circuits, voltage surges and excessive inrush current. Output slew rate and inrush current can be adjusted using a single external capacitor. Loads are protected from input overvoltage conditions by cutting off the output if input exceeds an adjustable overvoltage threshold. The devices respond to output overload by actively limiting the current (during startup) or breaking the circuit (during steady-state). The overcurrent protection threshold as well as the transient overcurrent blanking timer are useradjustable. The current limit control pin also functions as an analog load current monitor. The devices are available in a 2-mm × 2-mm, 10- pin HotRod™ QFN package for improved thermal performance and reduced system footprint. The devices are characterized for operation over a junction temperature range of –40°C to +125°C. • Wide operating input voltage range: 2.7 V to 16 V – 20-V absolute maximum • Integrated FET with low on-resistance: RON = 6 mΩ (typ.) • Fast overvoltage protection – Adjustable overvoltage lockout (OVLO) with 1.2-μs (typ.) response time • Overcurrent protection with load current monitor output (ILM) – Circuit-breaker response – Adjustable threshold (ILIM) 1.5 A – 11 A • ±10% accuracy for ILIM > 5 A – Adjustable transient blanking timer (ITIMER) to allow peak currents up to 2 × ILIM – Output load current monitor accuracy: ±10% (IOUT ≥ 3 A) • Fast-trip response for short-circuit protection – 640-ns (typ.) response time – Adjustable (2 × ILIM) and fixed thresholds • Active high enable input with adjustable undervoltage lockout threshold (UVLO) • Active low enable input with adjustable undervoltage lockout threshold (OVLO) • Adjustable output slew rate control (dVdt) • Option to drive external FET for reverse current blocking in disabled/OFF state • Overtemperature protection • Quick Output Discharge • Digital outputs – Power Good (PG) and fault indication (FLT) • UL 2367 recognition (pending) • IEC 62368 CB certification (pending) • Small footprint: QFN 2-mm × 2-mm, 0.45-mm pitch #CommonPartsLibrary #IntegratedCircuit #PowerManagement
31 Uses0 StarsSRP1265A-330M
33µH Shielded Drum Core, Wirewound Inductor 8 A 58mOhm Max Nonstandard The SRP1265A-330M is a shielded wirewound power inductor from the Bourns SRP1265A series, designed for high-current DC-DC converters, voltage regulator modules, and power supply applications. It features a carbonyl powder core construction that provides high saturation current capability, low electromagnetic interference (EMI), and stable inductance characteristics in compact surface-mount packaging. The device is AEC-Q200 qualified, making it suitable for automotive and industrial environments. Key Features 33 µH inductance Shielded construction for reduced EMI High saturation current capability Carbonyl powder core Low DC resistance Surface-mount package Wirewound drum-core structure AEC-Q200 qualified RoHS compliant and halogen free Operating temperature up to +150 °C Suitable for high-current switching regulators and DC-DC converters Electrical Characteristics Inductance: 33 µH Tolerance: ±20% Current Rating: 8 A Saturation Current (Isat): 11 A DC Resistance (Max): 58 mΩ Self-Resonant Frequency: 5 MHz Typical Applications DC-DC converters Switching power supplies Automotive electronics EMI filtering Industrial power systems LED drivers Battery-powered equipment #CommonPartsLibrary #Inductor #SMD
13 Uses0 StarsTPS25940LRVCR
Electronic Fuse Regulator 5.3A 20-WQFN (3x4) The TPS25940LRVCR is a compact eFuse (electronic fuse) power management IC from Texas Instruments designed to provide advanced power-path protection and load management for systems such as SSDs, servers, storage devices, and embedded electronics. It integrates protection features like overcurrent limiting, reverse current blocking, overvoltage protection, and controlled startup sequencing into a single chip. Wide input voltage range: 2.7 V to 18 V Adjustable current limit: 0.6 A to 5.3 A Low ON resistance: 42 mΩ typical True reverse current blocking using back-to-back MOSFETs Programmable output slew rate (dV/dt control) for inrush current management Overvoltage and undervoltage protection Fault and Power-Good outputs for system monitoring Current monitor (IMON) output Low-power DevSleep support for SSD applications Fast reverse voltage shutdown (~1 µs) Operating temperature: −40°C to +125°C junction temperature Available in a compact 20-pin WQFN package Typical Applications PCIe / SATA / SAS SSDs and HDDs Enterprise servers and storage systems RAID controller cards Smart load switches Set-top boxes and gaming systems Backup power and holdup capacitor systems Component Category This component belongs to: Power Management IC (PMIC) More specifically: eFuse / Hot-swap / Load Switch IC Package Information Package type: 20-WQFN (3 mm × 4 mm) Mounting type: Surface Mount (SMD) #commonpartslibrary #integratedcircuit #powermanagement #currentregulation
2.3k Uses0 StarsLGS5145
Buck Switching Regulator IC Adjustable 1 Output 1000mA SOT-23-6 The LGS5145 is a step-down DC/DC regulator with internal switching, featuring SKIP control mode, which combines low quiescent current with high switching frequency to achieve high efficiency over a wide range of load currents. The SKIP mode uses a short “burst” cycle to switch the inductor current through the internal power MOSFETs, followed by a sleep cycle in which the power switch is turned off and the load current is supplied by the output capacitor. At light loads, the burst cycle is a fraction of the total cycle time, minimizing the average supply current and greatly improving efficiency at light loads. The LGS5145 has a wide input voltage range of 4.5V55V, minimizing the need for external surge suppression components.The LGS5145 features an integrated low resistance 0.6Ω high-side power MOSFET that provides at least 1A of output current capability with excellent load and line transient response. Junction temperature range from -40°C to +125°C ■ All ports are ESD protected to 3000V (HBM). ■ Wide input voltage range: 4.5V-55V ■ 600mΩ High Side Metal Oxide Semiconductor Field Effect Transistors ■ At least 1000mA continuous current output capability ■ Up to 90% efficiency ■ SKIP mode provides very high light load efficiency ■ 1.2MHz fixed operating frequency ■ Internal compensation helps reduce solution size, cost and design complexity ■ Supports capacitive start for large loads ■ Cycle-by-cycle overcurrent protection ■ Output short circuit protection ■ thermal shutdown protection ■ Available in ultra-small package SOT23-6 package #CommonPartsLibrary #IntegratedCircuit #PowerManagement #Voltage-regulator #Switching-regulator
12 Uses0 StarsTPS259530DSGR
Electronic Fuse Regulator 4A 8-WSON (2x2) The TPS259530DSGR is a compact, integrated eFuse protection device designed to provide robust power-path management for low-voltage DC systems, particularly nominal five-volt rails. It combines multiple protection and control features into a single solution, enabling safe distribution of power to downstream circuitry while minimizing the need for external components. The device supports controlled inrush current during startup, continuous current monitoring, and rapid fault response to protect both the power source and the load. Integrated protection mechanisms include overvoltage protection, undervoltage lockout, overcurrent limiting, thermal shutdown, and reverse current blocking. This makes the device well suited for applications requiring high reliability, such as embedded systems, industrial electronics, consumer devices, and communication equipment. Functional Description The device operates as a high-side protection switch using an internal MOSFET to control current flow from the input supply to the load. It monitors input voltage, output current, and internal temperature to ensure operation within safe limits. When a fault condition such as overcurrent or overvoltage is detected, the device limits or interrupts current flow to prevent damage. The integrated control loop provides smooth startup by limiting inrush current and preventing supply droop. Reverse current blocking prevents unwanted current flow from the output back to the input when the input supply is removed or drops below the output level. Electrical Characteristics The device supports operation across a wide input voltage range suitable for low-voltage DC systems, including typical five-volt rails. It features an adjustable overvoltage protection threshold aligned with five-volt system requirements, along with configurable undervoltage lockout to ensure proper system startup and shutdown behavior. The current limit is externally programmable, allowing flexibility for different load conditions. The device exhibits low on-resistance to minimize power dissipation and voltage drop during normal operation. Protection Features The TPS259530DSGR integrates multiple protection functions to enhance system robustness. Overvoltage protection prevents excessive input voltage from reaching the load. Undervoltage lockout ensures the device only operates when the input supply is within a valid range. Overcurrent protection actively limits current during fault conditions and can respond rapidly to short circuits. Thermal shutdown protects the device from overheating by disabling operation when internal temperature exceeds safe limits. Reverse current blocking prevents backflow of current, safeguarding both the source and load. Control and Interface The device includes an enable control input that allows external control of the power path. It supports configurable behavior for fault response and recovery, depending on system design. External components can be used to set thresholds such as current limit and undervoltage lockout, providing design flexibility. Status signaling allows system-level monitoring of fault conditions. Mechanical and Package Information The TPS259530DSGR is provided in a compact surface-mount package suitable for space-constrained applications. The package is optimized for thermal performance and efficient PCB layout, enabling reliable operation under varying load conditions. It is supplied in tape-and-reel format for automated assembly processes. Applications This device is intended for use in systems requiring reliable power distribution and protection. Typical applications include five-volt power rails in embedded systems, industrial control modules, consumer electronics, communication devices, and peripheral power management circuits. Summary The TPS259530DSGR offers an integrated, high-reliability solution for power path protection and management in low-voltage systems. Its combination of protection features, configurability, and compact form factor makes it a widely used choice for safeguarding five-volt supply rails in modern electronic designs. #commonpartslibrary #integratedcircuit #powermanagement
1.0k Uses0 StarsIHDM1008BCEV4R7M30
4.7 µH Unshielded Drum Core, Wirewound Inductor 62 A 0.95mOhm Max Vertical, 2 PC Pin The IHDM1008BCEV4R7M30 is a surface-mount power inductor designed for energy storage and filtering in switching power supplies and DC-DC converter circuits. It provides stable inductance characteristics under varying current conditions, making it suitable for applications requiring efficient power conversion and noise suppression. The device is constructed using a magnetically shielded structure to minimize electromagnetic interference and ensure reliable operation in densely populated circuit environments. Its design supports high current handling capability while maintaining low core losses, contributing to overall system efficiency. Functional Overview The inductor stores energy in its magnetic field when current flows through it and releases that energy when the current changes. This behavior is essential for smoothing current in switching regulators and maintaining stable voltage levels in power circuits. Its low resistance winding helps reduce power loss, while the magnetic shielding limits flux leakage, improving performance in sensitive electronic systems. The component is optimized for high-frequency operation typically found in modern power management designs. Electrical Characteristics The device provides a fixed inductance value with stable performance across a range of operating currents. It supports relatively high saturation current levels, allowing it to function effectively in power circuits without significant degradation of inductance. Low direct current resistance contributes to improved efficiency and reduced heat generation. The inductor is designed to maintain consistent electrical behavior across typical operating temperatures and frequencies used in switching applications. Interface Requirements The component features standard surface-mount terminals for direct placement onto printed circuit boards. Proper soldering and pad design are required to ensure mechanical stability and optimal electrical performance. Placement considerations should include minimizing loop area and proximity to switching elements to reduce noise and maximize efficiency. Operating Conditions The inductor is intended for operation across a wide temperature range suitable for consumer and industrial electronics. It is capable of maintaining performance under continuous load conditions and varying thermal environments. Adequate thermal management and airflow may be necessary in high-current applications to prevent excessive temperature rise. Protection and Reliability Features The device is constructed with durable materials to ensure long-term reliability under electrical and thermal stress. Its magnetically shielded design reduces susceptibility to external interference and limits emissions that could affect nearby components. It is designed to withstand standard handling and soldering processes associated with surface-mount assembly. Packaging and Integration The IHDM1008BCEV4R7M30 is provided in a compact surface-mount package optimized for automated assembly processes. Its form factor allows efficient use of board space while supporting high-performance power designs. The package design ensures secure mounting and consistent electrical contact in high-density circuit layouts. Applications Typical applications include DC-DC converters, voltage regulator modules, power management circuits, filtering stages, and energy storage elements in portable devices, industrial equipment, and communication systems. #commonpartslibrary #inductors
0 Uses0 Stars
