AP1119

0.5A Positive Low Dropout Fixed-Mode Regulator With EN

Function

Anachip Corp.

www.anachip.com.tw

Rev. 1.0 Aug 20, 2004

2/5

Connection Diagram

5 PIN SOT89

GND

Vout

Vin

1

3

2

Tab is Vout

EN

NC

4

5

Pin Descriptions

NAME

FUNCTION

GND

Ground

Vout

The output of the regulator. A minimum of 10uF capacitor must be connected from this pin

to ground to insure stability.

Vin

The input pin of regulator. Typically a large storage capacitor is connected from this pin to

ground to insure that the input voltage does not sag below the minimum dropout voltage

during the load transient response. This pin must always be 1.3V higher than Vout in order

for the device to regulate properly.

EN

The input pin of regulator. TTL/CMOS compatible input Logic high = disable output, Logic

Low or open =Enable output. (internal Pull-down resistor ~ l00K).

Absolute Maximum Ratings

Characteristics

Symbol

Values

Unit

DC Supply Voltage

Vin

-0.3 to 18

V

Power Dissipation

Internally Limited

Storage Temperature

-65 to +150

oC

Operating Junction Temperature Range

0 to +150

oC