1.5MHz STEP-UP DC-DC CONVERTER

AP3012

2

May 2010 Rev. 1. 6

BCD Semiconductor Manufacturing Limited

Data Sheet

Figure 2. Pin Configuration of AP3012 (Top View)

Pin Description

Pin Number

Pin Name

Function

1SW

Switch Pin. Connect inductor/diode here. The output voltage can go up to 29V but should not

exceed this limit. If the voltage on this pin is higher than the overvoltage protection (OVP)

threshold, the device can go into shutdown mode. It can be restarted by a low to high pulse on

the SHDN pin, or by a power on reset on the VIN supply

2

GND

Ground Pin. Connect directly to local ground plane

3

FB

Feedback Pin. Internally compares to 1.25V. Connect R1 and R2 resistor divider here. Calcu-

late the Output Voltage according to the formula: VOUT=1.25V * (1+R1/R2)

4

SHDN

Shutdown Pin. Connect to 1.5V or higher to enable device (ON), 0.4V or lower to disable

device (OFF)

5VIN

Input Supply Pin. Must be locally bypassed

Pin Configuration

K Package

(SOT-23-5)

SW

FB

VIN

SHDN

GND

1

2

34

5