RT9263

Preliminary

www.richtek-ic.com.tw

DS9263-00 November 2001

4

Pin Description

Pin No.

RT9263CCX5 RT9263ECX5

Pin Name

Pin Function

--

1

EXT

Output pin for driving external NMOS or NPN

When driving an NPN, a resistor should be added for limiting base

1--

CE

Chip enable

RT9263CCX5 gets into shutdown mode when CE pin set to low.

22

VDD

Input positive power pin of RT9263

33

FB

Feedback input pin

Internal reference voltage for the error amplifier is 1.25V.

44

LX

Pin for switching

55

GND

Ground

Absolute Maximum Ratings

Supply Voltage

-0.3V to 6V

LX Pin Switch Voltage

-0.3V to (VDD + 0.8V)

Other I/O Pin Voltages

-0.3V to (VDD + 0.3V)

LX Pin Switch Current

2.5A

EXT Pin Driver Current

30mA

°C

SOT89-5

0.5W

• Package Thermal Resistance

SOT89-5,

300

°C/W

Operating Junction Temperature

150

°C

Storage Temperature Range

-65

°C ~ +150°C