Diodes AP3064 - Manual (Page 3)

Preliminary Datasheet
Boost Type LED Driver with 4-Channel Current Source AP3064
Jul. 2012 Rev. 1. 5 BCD Semiconductor Manufacturing Limited
3
Pin Description
Pin Number
Pin
Name
Function
SOIC-16
/PSOP-16
DIP-16
QFN-
4×4-16
1 1 3 CH4
LED current sink 4. Leave the pin open
directly if not used
2 3 5 ISET
LED current setting pin. The corresponding
maximum current of all 4 strings is set through
connecting a resistor from this pin to GND
3 2 4 OVP
Over voltage protection pin. When the OVP
pin voltage exceeds 2.0V, the OVP is triggered
and the power switch is turned off. When the
OVP pin voltage drops below hysteresis
voltage, the OVP is released and the power
switch will resume normal operation
4 4 6 RT Frequency control pin
5 5 7 EN
ON/OFF control pin. Forcing this pin above
2.4V enables the IC while below 0.5V shuts
down the IC. When the IC is in shutdown
mode, all functions are disabled to decrease
the supply current below 3
µA
6 6 8 CS Power switch current sense input
7 7 9 OUT
Boost converter power switch gate output.
This pin output high voltage (5V/V
IN
-0.5V) to
drive the external N-MOSFET
8 8 10 VCC
5V linear regulator output pin. This pin should
be bypassed to GND (recommend to connect
with GND pin) with a ceramic capacitor
9 9 11 VIN
Supply input pin. A capacitor (typical 10
µF)
should be connected between the V
IN
and
GND to keep the DC input voltage constant
10 10 12 STATUS LED operation status output
11 11 13 COMP Soft-start and control loop compensation
12 12 14 DIM
PWM dimming control pin.
Adding a PWM signal to this pin to control
LED dimming. If not used, connect it to the
high level
13 13 15 CH1
LED current sink 1. Leave the pin open
directly if not used
14 14 16 CH2
LED current sink 2. Leave the pin open
directly if not used
15 15 1 GND Ground
16 16 2 CH3
LED current sink 3. Leave the pin open
directly if not used