+

-

+

-

CP-

CP+

Φ2

R1

R2

VOUT

ErrorAmp

SkipComp

GND

TPS60150

Regulation

CurrentLimit

SoftStart

EnableIC

3

5

4

1

6

2

VIN

ENA

Control

Biascircuit

TSD

UVLO

Φ1

OSC

1.5MHz

Φ1

Φ2

TPS60150

SLVS888C – DECEMBER 2008 – REVISED OCTOBER 2015

www.ti.com

7.2 Functional Block Diagram

7.3 Feature Description

7.3.1 Enable

An enable pin on the regulator is used to place the device into an energy-saving shutdown mode. In this mode,

the output is disconnected from the input, and the input quiescent current is reduced to 10

μA maximum.

7.3.2 Undervoltage Lockout

When the input voltage drops, the undervoltage lockout prevents misoperation by switching off the device. The

converter starts operation again when the input voltage exceeds the threshold, provided the enable pin is high.

7.3.3 Thermal Shutdown Protection

The regulator has thermal shutdown circuitry that protects it from damage caused by overload conditions. The

thermal protection circuitry disables the output when the junction temperature reached approximately 160°C,

allowing the device to cool. When the junction temperature cools to approximately 140°C, the output circuitry is

automatically reenabled. Continuously running the regulator into thermal shutdown can degrade reliability. The

regulator also provides current limit to protect itself and the load.

8

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