AP1118
1A Positive Low Dropout Fixed-Mode Regulator With EN Function
Connection Diagram
5 PIN TO252/TO263
( Top View )
5 PIN TO220
Vin
5
4
5
4
Vin
EN
EN
Vout
NC
3
2
Vout
NC
3
2
1
GND
1
GND
Tab is Vout
Tab is Vout
SOP-8L
( Top View )
Vout
5
6
7
4
3
2
1
Vin
Vout
Vout
Vout
EN
Vout
8
GND
Pin Descriptions
NAME
FUNCTION
GND
Ground.
The output of the regulator. A minimum of 10uF capacitor must be connected from this pin
to ground to insure stability.
Vout
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.
Vin
The input pin of regulator. TTL/CMOS compatible input Logic high = disable output, Logic
Low or open = output enable. (internal pull-down resistor~100 K).
EN
NC
No connection.
Anachip Corp.
www.anachip.com.tw
Rev.1.1 Feb. 15, 2005
2/10
ANACHIP [ ANACHIP CORP ]
