© Semiconductor Components Industries, LLC, 2009

December, 2009 − Rev. 5

1

Publication Order Number:

CAT6217/D

CAT6217

150 mA CMOS LDO

Regulator

Description

The CAT6217 is a 150 mA CMOS low dropout regulator that

provides fast response time during load current and line voltage

changes.

The quick−start feature allows the use of an external bypass

capacitor to reduce the overall output noise without affecting the

turn−on time of just 150

ms.

With zero shutdown current and low ground current of 55

mA

typical, the CAT6217 is ideal for battery−operated devices with supply

voltages from 2.3 V to 5.5 V. An internal under voltage lockout circuit

disables the output at supply voltages under 2.1 V typical.

The CAT6217 offers 1% initial accuracy and low dropout voltage,

90 mV typical at 150 mA. Stable operation is provided with a 1

mF

ceramic capacitor, reducing required board space and component cost.

Other features include output short−circuit current limit and thermal

protection.

The device is available in the low profile (1 mm max height) 5−lead

TSOT−23 package.

Features

Compliant

Applications

http://onsemi.com

TSOT−23

TD SUFFIX

CASE 419AE

PIN CONNECTIONS

RTYM

MARKING DIAGRAM

RT = CAT6217 Device Code

Y = Production Year (last digit)

M = Production Month: 1 − 9, A, B, C

1

5

(Top View)

VOUT

BYP

VIN

GND

EN

1

See detailed ordering and shipping information in the package

dimensions section on page 9 of this data sheet.

ORDERING INFORMATION

Supply voltage input.

1

Ground reference.

2

Enable input (active high); a 2.5 MW

pull−down resistor is provided.

3

Optional bypass capacitor connec-

tion for noise reduction and PSRR

enhancing.

4

LDO Output Voltage.

5

Function

Pin #

PIN FUNCTION

Name

VIN

GND

EN

BYP

VOUT