RT9166/A

2

DS9166/A-19 April 2008

www.richtek.com

Typical Application Circuit

Functional Pin Description

Function Block Diagram

Note: To prevent oscillation, a 1

μμμμμF minimum X7R or X5R dielectric is strongly recommended if ceramics are

used as input/output capacitors. When using the Y5V dielectric, the minimum value of the input/output

capacitance that can be used for stable over full operating temperature range is 3.3

μμμμμF. (see Application

Information Section for further details)

Pin Name

Pin Function

VIN

Supply Input

VOUT

Regulator Output

GND

Common Ground

VIN

GND

VOUT

RT9166/A

C

OUT

1uF

C

IN

1uF

V

IN

V

OUT

Current

Limiting

Sensor

Thermal

Shutdown

-

Error

Amplifier

1.2V

Reference

VIN

GND

VOUT

SOT-223

1

23

GND

(TAB)

VIN

VOUT

SOT-89 (L-Type)

12

3

GND

VIN

(TAB)

VOUT

23

1

GND

VIN

VOUT

TO-252

SOT-223 (L-Type)

1

2

3

GND

VIN

(TAB)

VOUT

12

3

GND

(TAB)

VIN

VOUT

SOT-89