APE1085

3A Low Dropout Positive Adjustable or Fixed-Mode Regulator

Advanced Power Electronics Corp.

www.a-power.com.tw

2/1

0

Pb Free Plating Product

Connection Diagram

TO263

3

2

1

Vin

Vout

Adj (GND)

Tab is Vout

FRONT VIEW

TO252

3

2

1

Vin

Vout

Adj (GND)

Tab is Vout

FRONT VIEW

TO220

Tab is Vout

3

Vin

2

1

Vout

Adj (GND)

FRONT VIEW

Pin Descriptions

Pin No.

Name

I/O

TO263/

252/220

PDIP-8

Function

Adj

(GND)

I

1

1

Adjustable (Ground only for fixed mode)

A resistor divider from this pin to the Vout pin and ground sets the

output voltage. (Ground only for Fixed-Mode)

Vout

O

2

2/3/5/6/

7/8

The output of the regulator. A minimum of 10uF (0.15Ω ≤ ESR ≤

20Ω) capacitor must be connected from this pin to ground to insure

stability.

Vin

I

3

4

The input pin of regulator. Typically a large storage capacitor (0.15Ω

≤ ESR ≤ 20Ω) 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 1.4V

(1.3V) higher than Vout in order for the device to regulate properly.

Advanced Power

Electronics Corp.