Product details


Output options Adjustable Output Iout (Max) (A) 0.45 Vin (Max) (V) 40 Vin (Min) (V) 4 Vout (Max) (V) 18 Vout (Min) (V) 1.5 Iq (Typ) (mA) 0.015 Thermal resistance θJA (°C/W) 48 Load capacitance (Min) (µF) 10 Rating Catalog Regulated outputs (#) 1 Features Enable, Power Good Accuracy (%) 2 PSRR @ 100 KHz (dB) 45 Dropout voltage (Vdo) (Typ) (mV) 240 Operating temperature range (C) -40 to 125 open-in-new Find other Linear regulators (LDO)

Package | Pins | Size

VSON (DRB) 8 9 mm² 3 x 3 open-in-new Find other Linear regulators (LDO)


  • Wide Input Voltage Range: 4 V to 40 V
  • Adjustable Output Voltage: 1.5 V to 18 V
  • Output Current: 450 mA
  • Low Quiescent Current (IQ): 15 µA
  • Low Dropout Voltage: 450 mV (max) at 400 mA
  • Power Good with Programmable Delay
  • Thermal Shutdown and Overcurrent Protection
  • Stable with Ceramic Output Capacitors:
    • 10 µF to 500 µF for VOUT ≥ 2.5 V
    • 22 µF to 500 µF for VOUT < 2.5 V
  • Operating Temperature: –40°C to +125°C
  • Package: 3-mm × 3-mm SON-8
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The TPS7A19 is a low-dropout linear regulator (LDO) with a wide input voltage (VIN) range up to 40 V, capable of sourcing high output current (IOUT) up to 450 mA. This voltage regulator is ideal for generating a low-voltage supply from wide input-voltage rails. Not only does the TPS7A19 supply a well-regulated voltage rail, but the device also withstands and maintains regulation during voltage transients by acting as a simple surge protection circuit.

The TPS7A19 consumes only 15 µA of quiescent current (IQ) at light loads, thereby lowering the power consumption for always-on or battery-powered applications.

The TPS7A19 features integrated thermal shutdown and overcurrent protection. The TPS7A19 also offers a power good output (PG) with a programmable delay that indicates when the output voltage is in regulation. This feature is useful for power-rail sequencing functions.

This LDO is available in a small, 3-mm × 3-mm, thermally-enhanced, 8-pin SON package.

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Same functionality but is not pin-for-pin or parametrically equivalent to the compared device:
TPS7A90 ACTIVE 500-mA, low-noise, high-PSRR, adjustable ultra-low-dropout voltage regulator with high-accuracy 500mA LDO Regulator, low noise (4.7uVrms) LDO in a small package (2.5 mm x 2.5mm)

Technical documentation

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Type Title Date
* Datasheet TPS7A19 40-V, 450-mA, Wide VIN, Low IQ, Low-Dropout Voltage Regulator with Power Good datasheet (Rev. A) Sep. 30, 2016
Technical article LDO basics: capacitor vs. capacitance Aug. 01, 2018
Technical article LDO Basics: Preventing reverse current Jul. 25, 2018
Technical article LDO basics: introduction to quiescent current Jun. 20, 2018
Selection guide Low Dropout Regulators Quick Reference Guide (Rev. P) Mar. 21, 2018
Technical article LDO basics: noise – part 1 Jun. 14, 2017
User guide TPS7A19 EVM User's Guide Jun. 20, 2016

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

document-generic User guide
The TPS7A1901EVM-760 evaluation module is designed for a typical configuration to evaluate the operation and performance of the TPS7A19 40-V, 450-mA, High-Voltage, Ultra-Low IQ Low-Dropout Regulator.

The EVM circuit board is configured to be a reference design for engineering applications requiring (...)
  • Wide Input Voltage Range: 4 V to 40 V
  • Output Current: 450 mA
  • Low Quiescent Current: 15uA
  • Power Good with Programmable Delay

Design tools & simulation

SBVM622A.ZIP (85 KB) - PSpice Model
SBVM623A.ZIP (3 KB) - PSpice Model

CAD/CAE symbols

Package Pins Download
SON (DRB) 8 View options

Ordering & quality

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