AP3036B

Document number: DS37004 Rev. 1 - 2

2 of 11

www.diodes.com

March 2014

© Diodes Incorporated

AP3036B

A Product Line of

Diodes Incorporated

Pin Descriptions

Pin Number

Pin Name

Function

1

CTRL

Shutdown and dimming pin. Connect to 1.5V or higher to enable device; Connect to 0.4V or less to

disable device; Connect to a PWM signal to achieve LEDs brightness dimming

2

VOUT

Output pin. Connect to the cathode of internal Schottky diode

3

VIN

Input supply pin. Must be connected to a local bypass capacitor

4

SW

Switch pin. Connect external inductor

5

GND

Ground

6

FB

Voltage feedback pin. The reference voltage is 200mV

Functional Block Diagram

Q1



A2

A1

R

S

Q

1.0 MHz

OSCILLATOR

RAMP

GENERATOR

6

3

1

5

2

DRIVER

1.25 V

COMPARATOR

OVP

200 mV

4

SOFT

START

FB

SW

VOUT

GND

CTRL

VIN