TPS782xx - 150mA, Ultra-Low Quiescent Current,
IQ 1µA Low-Dropout Linear Regulator

  • Overview
  • Features
  • Specifications
  • Block Diagram
  • Part Numbers


TPS782x Pin DiagramTPS78233DDCT & TPS78223DDCT

The TPS782 family of low-dropout regulators (LDOs) offers the benefits of ultra-low power (IQ = 1µA) and miniaturized packaging (2×2 SON). This LDO is designed specifically for battery-powered applications where ultra-low quiescent current is a critical parameter. The TPS782, with ultra-low IQ (1µA), is ideal for microprocessors, memory cards, and smoke detectors.

The ultra-low power and miniaturized packaging allow designers to customize power consumption for specific applications. Please contact Digi-Key for exact voltage options and ordering information; minimum order quantities may apply.   Datasheet

The TPS782 family is designed to be compatible with the TI MSP430 and other similar products. The enable pin (EN) is compatible with standard CMOS logic. This LDO is stable with any output capacitor greater than 1.0µF. Therefore, this device requires minimal board space because of miniaturized packaging and a potentially small output capacitor. The TPS782 series also features thermal shutdown and current limit to protect the device during fault conditions. All packages have an operating temperature range of TJ = -40°C to +125°C. For high-performance applications that require a dual-level voltage option, consider the TPS780 series with an IQ of 500nA and dynamic voltage scaling.


  • Low IQ: 1µA
  • 150mA, Low-Dropout Regulator
  • Low-Dropout at +25°C, 130mV at 150mA
  • Low-Dropout at +85°C, 175mV at 150mA
  • 3% Accuracy Over Load/Line/Temperature
  • Available in Fixed Voltage Options (2.5V, 2.7V, and 2.8V) Using Innovative Factory EEPROM Programming
  • Stable with a 1.0µF Ceramic Capacitor
  • Thermal Shutdown and Overcurrent Protection
  • CMOS Logic Level-Compatible Enable Pin
  • Available in DDC (TSOT23-5) or DRV (2mm x 2mm SON-6) Packages
  • TI MSP430 Attach Applications
  • Power Rails with Programming Mode
  • Wireless Handsets, Smartphones, PDAs, MP3 Players, and Other Battery-Operated Handheld Products

RoHS Compliant


  Electrical Characteristics
VIN  Input voltage range   2.2   5.5 V
VOUT  DC output accuracy  Nominal  TJ=25°C –2.0 ±1.0 +2.0 %
 VOUT +0.5V ≤ VIN ≤ 5.5V,
 0mA ≤ IOUT ≤ 150mA
–3.0 ±2.0 +3.0
∆VOUT∆VIN  Line regulation  VOUT(NOM) + 0.5V ≤ VIN ≤ 5.5V,
 IOUT = 5mA
  ±1.0   %
∆VOUT∆IIN  Load regulation  0mA ≤ IOUT ≤ 150mA   ±2.0   %
VDO  Dropout voltage(1)  VIN = 95% VOUT(NOM),
 IOUT = 150mA
  130 250 mV
ICL  Output current limit  VOUT = 0.90 × VOUT(NOM) 150 230 400 mA
IGND  Ground pin current  IOUT = 0mA   1.0 1.3 µA
 IOUT = 150mA   8.0   µA
ISHDN  Shutdown current (IGND)  VEN ≤ 0.4V, 2.2V ≤ VIN < 5.5V,
TJ=–40°C to +100°C
  18 130 nA
IEN  EN pin current  VEN = 5.5V     40 nA
PSRR  Power-supply rejection ratio  VIN = 4.3V,
 VOUT = 3.3V,
 IOUT = 150mA
 f = 10Hz   40   dB
 f = 100Hz   20   dB
 f = 1kHz   15   dB

Note 1:  VDO is not measured for devices with VOUT(NOM) ≤ 2.3V because minimum VIN = 2.2V.

Functional Block Diagram

TPS782x Block Diagram

Part Numbers

Texas Instruments
Part Number
Digi-Key Part Number
Voltage - Output
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