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TPS7A1650DGNR

60V 100mA LDO, 5V fixed, 5µA IQ, PG, HVSSOP-8

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Manufacturer Part：

TPS7A1650DGNR

Package：

8-Pin HVSSOP PowerPAD (3.0 x 3.0 x 0.9 mm)

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Description

Product Overview

The TPS7A1650DGNR is a Texas Instruments 60V, 100mA ultra-low IQ LDO regulator with 5V fixed output, power-good indicator, and enable pin. Features 5µA quiescent current, 60mV dropout at 20mA, and ±2% output accuracy. Packaged in 8-pin HVSSOP (DGN) with PowerPAD, rated for -40°C to +125°C.

Key Specifications

Input Voltage 3 V to 60 V
Output Voltage 5 V fixed
Output Current 100 mA
IQ 5 µA typical
Dropout 60 mV @ 20 mA
Accuracy ±2%
Package 8-Pin HVSSOP (DGN) PowerPAD

Features

  • 3V to 60V wide input range
  • 5µA ultra-low quiescent current
  • 1µA shutdown current
  • 60mV dropout at 20mA
  • Programmable power-good with delay
  • Current limit and thermal shutdown
  • ≥2.2µF ceramic output capacitor stable

Applications

  • Battery-powered MCU systems
  • Smoke and CO2 detectors
  • Automotive audio and navigation
  • Industrial backup power supplies

The TPS7A1650DGNR is a Texas Instruments 60V, 100mA ultra-low quiescent current low-dropout regulator with a fixed 5V output in an 8-pin HVSSOP (DGN) package with PowerPAD. The 3V to 60V input voltage range supports multi-cell battery packs from power tools to automotive systems. The 5µA typical quiescent current is critical for extending battery life in always-on or sporadically-active systems such as smoke detectors, CO2 monitors, and battery-backed microcontrollers. The 1µA shutdown current further minimizes drain when the regulator is disabled. The 60mV dropout voltage at 20mA load enables regulation even when the input battery voltage sags near the output. The programmable power-good output with adjustable delay capacitor provides a reset signal for microcontroller power sequencing. The enable pin is compatible with standard CMOS logic levels. Internal current limiting and thermal shutdown protect the device under fault conditions. The regulator is stable with ceramic output capacitors as small as 2.2µF, minimizing solution size. Rated for the full -40°C to +125°C automotive temperature range.

The TPS7A16 uses a PMOS pass transistor in a classic LDO topology. The error amplifier compares a fraction of the output voltage (via an internal resistor divider for the fixed 5V version) with an internal bandgap reference. The amplifier drives the PMOS gate to regulate the output. The ultra-low 5µA quiescent current is achieved by biasing the error amplifier and reference at very low currents while maintaining adequate bandwidth for regulation. The 60V maximum input voltage is supported by a high-voltage PMOS process with thick gate oxide. The power-good comparator monitors the output voltage and asserts the open-drain PG pin when the output is above the threshold, with an external capacitor on the PG delay pin setting the assertion delay. The enable pin controls an internal switch that shuts down all bias currents to the 1µA shutdown state. Current limiting is implemented by sensing the pass transistor current and reducing the gate drive when the limit is exceeded.

Pin Mnemonic Description
1 OUT Regulated 5V output
2 PG Power-good (open-drain)
3 EN Enable (active high)
4 IN Input supply (3-60V)
5 FB/NC Feedback (fixed version: no connect)
6 PG_DELAY Power-good delay capacitor
7 GND Ground
8 GND Ground / Thermal pad
  • Smoke detector always-on 5V rail from 9V battery with 5µA IQ extending battery life to 10 years
  • Automotive navigation system 12V-to-5V LDO with power-good for MCU reset during crank transients
  • Industrial backup 24V-to-5V supply with PG delay for controlled power sequencing
  • Power tool battery pack 18V-to-5V MCU supply with 1µA shutdown standby
Model Manufacturer Key Difference
TPS7A1650DGNT TI Same die, tape-and-reel only
TPS7A1633DGNR TI 3.3V fixed output version
TPS7A16ADBVR TI Adjustable version, SOT-23-6
MAX1735EUK50+T ADI 5V, 28V, lower IQ alternative
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