RT9193

2

DS9193-11 May 2008

www.richtek.com

Function Block Diagram

Functional Pin Description

Pin Name

Pin Function

EN

Chip Enable (Active High). Note that this pin is high impedance. There should be a pull low 100k

Ω

resistor connected to GND when the control signal is floating.

BP

Reference Noise Bypass.

GND

Ground .

VOUT

Output Voltage.

VIN

Power Input Voltage.

Current-Limit

and

Thermal

Protection

MOS Driver

+

VOUT

Shutdown

and

Logic Control

VIN

Error

Amplifier

V

REF

BP

EN

GND

Quick

Start

Pin Configurations

(TOP VIEW)

SC-70-5/SOT-23-5/TSOT-23-5

WDFN-6L 2x2

MSOP-8

5

6

7

8

4

3

2

NC

NC

EN

BP

GND

VOUT

NC

VIN

EN

GND

BP

NC

VOUT

VIN

5

4

1

2

3

6

7

VIN

GND

BP

VOUT

EN

2

3

5

4

1