_

+

Current

Sense

LeakageNull

ControlCircuit

R1

R2

GND

ILIM

Bandgap

Reference

V

=1.205V

ref

_

+

Current

Sense

LeakageNull

ControlCircuit

R1

R2

GND

ILIM

Bandgap

Reference

V

=1.205V

ref

FB

8

TPS715A

SBVS047H – MAY 2004 – REVISED MARCH 2016

www.ti.com

Product Folder Links: TPS715A

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Copyright © 2004–2016, Texas Instruments Incorporated

7 Detailed Description

7.1 Overview

The TPS715A family of low dropout regulators consumes only 3.2 µA of current and offers a wide input voltage

range and low-dropout voltage in a small package. The devices operate over an input range of 2.5 V to 24 V and

are stable with any capacitor greater than or equal to 0.47

μF. The low quiescent current makes the TPS715A

ideal for powering battery management devices. Specifically, because the TPS715A is enabled as soon as the

applied voltage reaches the minimum input voltage, the output is quickly available to power continuously-

operating, battery-charging devices.

7.2 Functional Block Diagrams

Figure 14. Functional Block Diagram—Adjustable Version

Figure 15. Functional Block Diagram—Fixed Version