Data Sheet

2

Apr. 2009 Rev. 1. 3

BCD Semiconductor Manufacturing Limited

WHITE LED STEP-UP CONVERTER

AP3031

Figure 2. Pin Configuration of AP3031 (Top View)

Pin Configuration

Pin Description

Pin Number

Pin Name

Function

6-Pin

8-Pin

1

4

SW

Switch Pin. Connect external inductor and Schottky

2

2, 3, 6

GND

Ground Pin

3

1

FB

Voltage Feedback Pin. Reference voltage is 200mV

4

8CTRL

Enable and Dimming Control Pin. Connect to a high input to enable the IC or a low input to

disable the IC.

If logic low time is more than about 0.7ms and then enable the IC, the AP3031 will soft start to

protect system departments. If logic low time is less than about 0.7ms and then enable the IC,

the AP3031 will hold on standby mode and start directly to achieve high frequency dimming

5

7

OV

Over-voltage Protection Input Pin. Connect to the output directly. On OVP condition, the out-

put voltage will be clamped

65

Input Supply Pin. Must be locally bypassed

(SOT-23-6/TSOT-23-6)

SW

GND

FB

OV

CTRL

K/KT Package

1

2

34

5

Pin 1 Dot by Marking

6

(SOIC-8)

M Package

1

2

3

4

8

7

6

5

SW

GND

FB

GND

OV

CTRL

GND