RT9183

3

DS9183-14 April 2008

www.richtek.com

Figure 3. Fixed Operation with SOP-8 and TO-263-5 packages

Functional Pin Description

Pin Name

Pin Function

EN

Chip Enable Control Input.

Note that the device will be in the unstable state if the pin is not connected.

VIN

Supply Input.

GND

Common Ground.

VOUT

Regulator Output.

ADJ

The output voltage is set by the internal feedback resistors when this pin

grounded. If external feedback resistors are applied, the output voltage will be:

) Volts

2

1

R

R

Function Block Diagram

VIN

VOUT

EN

GND ADJ

(SOP-8 & TO-263-5)

RT9183

C

10uF

0.1uF

10uF

Enable

Thermal

Shutdown

VOUT

Shutdown

Logic

EN

GND

Output Mode

Comparator

ADJ

VIN

Error

Amplifier

+

-

0.8V

Reference

Current Limit

Sensor

+

-

100mV