Diodes AP3036B - Manual (Page 2)

AP3036B
Document number: DS37004 Rev. 1 - 2
2 of 11
www.diodes.com
March 2014
© Diodes Incorporated
AP3036B
A Product Line of
Diodes Incorporated
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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
V
REF
6
3
1
5
2
DRIVER
1.25 V
COMPARATOR
OVP 200 mV
4
SOFT
START
FB SW
VOUT
GND
CTRL
VIN