_

+

Thermal

Shutdown

Current

Sense

R1

R2

GND

EN

SHUTDOWN

UVLO

ILIM

250 kW

NR

QuickStart

Bandgap

Reference

1.22V

UVLO

2.45V

R2 = 40 kW

IN

IN

OUT

_

+

Thermal

Shutdown

Bandgap

Reference

1.22V

Current

Sense

R2

GND

EN

SHUTDOWN

UVLO

ILIM

External to

the Device

R1

UVLO

2.45V

250 kW

NR

FB

59 k

QuickStart

OUT

IN

IN

TPS730

www.ti.com

SBVS054J – NOVEMBER 2004 – REVISED APRIL 2015

7 Detailed Description

7.1 Overview

The TPS730 family of low-dropout (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 (170

μA typically), and enable-input to reduce supply currents to less than 1 μA when the

regulator is turned off.

7.2 Functional Block Diagrams

Figure 15. TPS730 Block Diagram (Adjustable-Voltage Version)

Figure 16. TPS730 Block Diagram (Fixed-Voltage Versions)

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