Power management

Improve your system performance with our  LDO linear regulators

With the largest portfolio of LDOs, we have the right one for you

Low-dropout (LDO) linear regulators are a simple, inexpensive way to regulate an output voltage that is powered from a higher voltage input in a variety of applications. Browse our portfolio of over 500 devices with features such as low noise, wide input voltage (VIN), small package size, low quiescent current (IQ), processor attach and the industry's first smart AC/DC linear regulator. We also help you meet nearly any LDO design challenge, from powering sensitive analgo systems to extending battery life.

Product portfolio

Our high-performance linear power regulators and low-voltage regulators feature low noise, low quiescent current and wide input voltage ranges. Our low-dropout (LDO) regulators are available in small package sizes and for automotive applications.

Low noise

Optimize signal integrity with our ultra-low-noise LDOs.

Low IQ

Save power across a wide variety of applications with our low quiescent current LDOs.

Wide VIN

Enhance system reliability with our robust LDOs featuring a wide input voltage range.

Small size

Reduce solution size with our small-size, high-performance LDOs.

What’s new

The industry's lowest quiescent current (25-nA), ultra-small LDO regulator

This ultra-small LDO combines low IQ with fast transient response to improve system lifetime and performance. The TPS7A02 helps reduce solution size by 70%, increase application run times and extend the battery life of your electronics.

Design challenges

You are working under a tight schedule and need to trust that the device you are looking for is optimal for your application.  We provide you with our industry leading reference designs, technical documentation, white papers, video content and more to make it easier to solve your design challenges.

Powering sensitive analog for battery applications

Whether you are powering an MCU, the imaging sensor of a camera or wireless communications, we help you make the best choice to optimize your design needs and find a balance between performance and long battery life.

Key benefits of our low-dropout (LDO) linear regulators in powering sensitive analog for battery applications include:
 
  • Low ground and low quiescent current: Minimizes standby power to prolong battery life. 
  • Low noise and high power-supply rejection ratio (PSRR): Improves wireless communications and data converters: our high PSRR performance helps clean up switching noise from a DC/DC solution and our low noise helps improve the bit error rate (BER).
  • Low dropout voltage (VDO):  Lets the LDO regulate the voltage for longer and, in some cases, function as a load switch while the battery drains.
  • Small size: Features small <1-mm2 packages, such as DSBGA and X2SON packages, so that our LDO regulators can fit in space-constrained applications.
Device
Device description
Design resources
TPS7A02 200-mA, 2-nA IQ LDO regulator with fast transient response

Application report:
Extend battery life with < 100 nA IQ buck converter achieving < 150 µV voltage ripple

LDO noise demystified

LDOs thermal performance in small SMD packages

 
LP5907 250-mA, ultra-low-noise (6-µVRMS), low-IQ (12-µA) LDO regulator with excellent PSRR performance
TPS727 250-mA, low-noise (33.5-µVRMS), low-IQ (8-µA) LDO regulator with fast transient response
LP5910 300-mA, ultra-low-noise (12-µVRMS), low-IQ (12-µA) LDO regulator with excellent PSRR performance
LP5912 500-mA, ultra-low-noise (12-µVRMS), low-IQ (30-µA) LDO regulator with excellent PSRR performance

Powering signal-conditioning analog circuits

Whether you need 150 mA or 1 A for your dual-rail power supply we have the right solution for you. One of our newest voltage regulators, TPS7A39, helps you simplify your design because it combines a positive and negative regulator in a single package with start-up tracking. This feature minimizes the need to focus on power sequencing because the TPS7A39 negative rail tracks the positive rail at start-up.

Key benefits of our LDO regulators in powering signal-conditioning analog circuits include:

  • Low noise and high PSRR: The PSRR filters out the ripple from the upstream converter and filters the low frequency noise which can help improve accuracy and repeatability. 
  • Wide input voltage (VIN) and output voltage (VOUT) ranges: Our high-PSRR and low-noise LDO regulators are specified with input voltages up to ±36 V to support precision analog circuitry. 
  • Positive and negative power rails: Solutions designed to minimize ground noise can leverage our dual-rail LDO regulators to provide the low noise needed to power to your analog circuitry. 

 

Device
Device description
Design resources
TPS7A35 1-A power filter with a fixed 300-mV dropout voltage and only 3.8 µVRMS

Reference designs:
Xilinx® Zynq® 7000 series (XC7Z015) power solution, 8W

Dual rail (+/-) ultra-low noise high PSRR, LDOs (-15V @ 200mA)

Low-noise fixed drop-out ±2.5 to ±12-VOUT 3A power supply for ultrasound CW pulser

Tech note:
Dual bipolar power-supply considerations for amplifiers

TPS7A39 Dual (±), 150-mA, wide-VIN, ultra-low-noise (15-µVRMS) LDO regulator with start-up tracking
TPS7A49 Positive, 150-mA, wide-VIN, ultra-low-noise (15-µVRMS) LDO regulator with excellent PSRR performance
TPS7A30 Negative, 200-mA, wide-VIN, low-noise (15-µVRMS) LDO regulator with excellent PSRR performance
TPS7A47 Positive, 1-A, wide-VIN, ultra-low-noise (4-µVRMS) LDO regulator with excellent PSRR performance
TPS7A33 Negative, 1-A, wide-VIN, low-noise (16-µVRMS) LDO regulator with excellent PSRR performance

Powering sensitive analog systems

If you need power for 5G and beyond and have sensitive measurement equipment or need the lowest noise power solution that you can find, we have an LDO regulator to clean up switching noise to provide low-noise power. 

Key benefits of our LDO regulators in powering RF-sensitive circuits include:

  • Low noise and high PSRR: Our LDO regulators for sensitive analog system have high PSRR where it matters. This is where the upstream converter is running. The high PSSRR of our devices filter out input ripple and provide low noice at the output, minimizing phase noise.
  • Low-dropout voltage: Continues to provide a regulated output voltage at extremely low VIN, extending the operating range of your system.
  • ANY-OUTTM  configuration: Provides a configuration that does not require external resistors, which makes an ANY-OUT configuration LDO a true 0.75% accurate series of regulators. This ANY-OUT functionality is supported with our TPS7A8xA family of LDO regulators.
  • Power density: Helps keep the device operating reliably for years by leveraging our low-dropout voltage and low thermal-resistance.

 

Device
Device description
Design resources
TPS7A90
TPS7A91
TPS7A92
500-mA, 1-A or 2-A, ultra-low-noise (4-µVRMS) LDO regulator with excellent PSRR performance

Application report:
LDO noise demystified

Reference design:
 
White paper:
TPS7A87
TPS7A88
TPS7A89   
Dual, 500-mA, 1-A or 2-A, ultra-low-noise (4-µVRMS per channel) LDO regulator with excellent PSRR performance
TPS7A83A
TPS7A84A
TPS7A85A    
2-A, 3-A or 4-A, ultra-low-noise (4-µVRMS) LDO regulator with excellent PSRR performance and ANY-OUT programming

Ultra-low standby power management system to prolong battery life

The Internet of Things (IoT) is just one trend driving us to help you create applications with extended battery life. Our latest ultra-low IQ devices have a no-load operating IQ of only 25 nA and a shutdown current of approximately 3 nA which helps extend the shelf life of a battery and.  Our linear power regulator portfolio includes many voltage regulators to help you with your low standby power needs.

Key benefits of our regulators with battery packs and single cell batteries include:

  • Low ground and low quiescent current: Improves current efficiency by allowing more current from the battery to go to the load.
  • Wide input voltage range: Supports single Lithium (Li) coin cells up to 15s (15 cells in series) Li-ion batteries. 
  • Low dropout voltage: Continues to provide a regulated output voltage at low input voltages to extend the operating range of the system.
  • Small size: Minimizes the need for additional components by requiring only one or two additional components based on the application requirements. 

 

Device
Device description
Design resources
TPS7A05 Ultra-low IQ (1-µA), low-VIN (1.4-V) LDO regulator available in a 0.42-mm2 DSBGA package and a 1-mm2 X2SON package

Reference designs:
Ultra-low standby power for wireless earbud battery

Enhanced accuracy battery fuel gauge for low power industrial IoT field metering

Light load efficient, low noise power supply for wearables and IoT

650 W power stage without heat sink for low-frequency offline UPS and inverters

Optimizing efficiency by handshaking adjustable adapters and battery chargers

Battery pack controller communications bridge

Technical article:
LDO basics: introduction to quiescent current

TPS7A02 200-mA, 2-nA IQ LDO regulator with fast transient response
TPS7A10
TPS7A11
300-mA or 500-mA, low-VIN (0.6- to 3.6-V), low-VOUT (0.5-V) LDO regulator available in a 0.42-mm2 DSBGA package
TPS7A25
TPS7A26
300-mA or 500-mA, low-IQ (2.5-µA), wide-VIN (2.4- to 18-V) LDO regulator with power-good (PG) pin
TLV704 Low-IQ (3 µA), wide-VIN (2.4- to 24-V) LDO regulator available in a SOT-23 package    
TPS709 Ultra-low IQ (1-µA), wide-VIN (2.7- to 30-V) LDO regulator available in a SOT-23 package    
TPS7A16 Low-IQ (5-µA), high-VIN (3- to 60-V) LDO regulator available in a 3-mm-by-3-mm QFN package

Powering off-board sensors

Tracking LDO regulators can help make sure that loads are properly regulation even when located far from the actual power supply. Our tracking LDO regulators are equipped with full protection to help make sure that the control unit board is unaffected by wire-harness failure events. The tracking architecture allows for accurate readings when exciting resistive, ratiometric sensors.

Key benefits of our LDO regulators include:

  • Full protection: Powers sensors robustly over cables using short-to-battery, short-to-ground, reverse current and reverse polarity events. 
  • Tracking accuracy:  Makes sure that the sensor is being excited by the same voltage that is supplied to the ADC reference.
  • Wide input voltage range: Allows the LDO regulator to withstand inductive kicks as a result of a load dump. 
Device
Device description
Design resources
TPS7B4250-Q1 50-mA, 40-V voltage-tracking LDO regulator with 5-mV tracking tolerance

Application report:
Various applications for voltage-tracking LDO

Automotive off-board sensor power considerations

Reference design:
15 W system-level power reference design for automotive body control module

LDO parallel solution reference design with TPS7B4253-Q1

TPS7B4254-Q1 150-mA, 40-V voltage-tracking LDO regulator with 4-mV tracking tolerance
TPS7B4253-Q1 300-mA 40-V low-dropout voltage-tracking regulator with 4-mV tracking tolerance

LDO design resources

We have multiple training and support options available on-demand to help you get started with your power system.

Browse complete board-level and system-level reference design circuits to help you quickly evaluate and customize your power system.

Search for any suppliers’ linear voltage regulator to find our similar devices by parameter.

See our E2E™ technical support forums for your source to fast, verified answers and design help from our experts.