BOOST CONTROLLER

AP3039

Preliminary Datasheet

2

BCD Semiconductor Manufacturing Limited

May 2008 Rev. 1. 0

Pin Description

Pin Number

Pin Name

Function

1

EN

Enable pin

2

VIN

Input supply pin, must be locally bypassed

3, 12

NC

No connection

4VCC

6V linear regulator output pin. VCC is used to bias the gate driver for the external MOSFET.

pin should be bypassed to GND (recommend to connect with AGND pin) with a ceramic

capacitor

5

OUT

Connect this pin to the gate of external MOSFET, the gate driver has 0.6A peak current capa-

bility

6

PGND

Power ground

7

RT

An external resistor connected from this pin to GND to set the operating frequency

8

CS

Sense switch current pin, which is used for current mode control and for current limit

9

AGND

Reference ground

10

SHDN

This pin can be connected to current matched chip and receives error signal used to shut down

the system

11

FB

Voltage Feedback Pin. The reference voltage is 500mV

13

COMP

Compensation Pin. This pin is the output of the internal Error Amplifier

Figure 2. Pin Configuration of AP3039 (Top View)

Pin Configuration

(QFN-3x3-16)

NC

AGND

OUT PGND

FN Package

VIN

RT

VCC

SHDN

SS

UVLO

EN

OV

FB

NC

COMP

CS

E P

56

7

8

13

14

15

16

1

2

3

49

10

11

12

Pin 1 Identification

Exposed PAD