6 Detailed Description

6.1 Overview

The TPS792xx family of LDO regulators has been optimized for use in noise-sensitive battery-operated

equipment. The device features extremely low dropout voltages, high PSRR, ultra-low output noise, low

quiescent current, and enable-input to reduce supply currents to less than 1μA when the regulator is turned

off..

6.2 Functional Block Diagrams

_

+

Thermal

Shutdown

Bandgap

Reference

VIN

Current

Sense

R2

VIN

GND

EN

VOUT

SHUTDOWN

Vref

UVLO

ILIM

External to

the Device

R1

UVLO

250 kW

Bypass

FB

Figure 6-1. Functional Block Diagram – Adjustable Version (Legacy Chip)

Bandgap

Thermal

Shutdown

UVLO

Internal

Controller

Current

Limit

120

IN

EN

GND

OUT

FB

Figure 6-2. Functional Block Diagram – Adjustable Version (New Chip)

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TPS792

SLVS337E – MARCH 2001 – REVISED JANUARY 2025

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