Owner's manual

Preliminary Datasheet
Boost Type LED Driver with 12-Channel Current Source AP3612
Aug. 2012 Rev. 1. 1 BCD Semiconductor Manufacturing Limited
7
Electrical Characteristics
V
IN
=24V, V
EN
=5V, Typical T
A
=25°C, unless otherwise specified.
Parameter Symbol Conditions Min Typ Max Unit
INPUT SUPPLY
Input Voltage V
IN
4.5 33 V
Quiescent Current I
Q
No Switching 3 5 mA
Shutdown Supply Current I
SHTD
V
EN
=V
DD
=0V 0.1 3
µA
UVLO V
UVLO
V
IN
Rising 3.6 3.8 4.0 V
UVLO Hysteresis V
HYS
200 mV
VCC SECTION
VCC Voltage V
CC
V
IN
≥5.5V
5 V
V
IN
＜5.5V,
Load=10mA
V
IN
-0.1 V
OUT Pin Rising Time (Note 3) t
RISING
1nF Load 30 50 ns
OUT Pin Falling Time (Note 3) t
FALLING
1nF Load 30 50 ns
Load Regulation (Note 3)
Load=0 to
30mA
5
mV/mA
Line Regulation (Note 3)
V
IN
=5.5 to
24V
0.3
mV/V
HIGH FREQUENCY OSCILLATOR
Switch Frequency
(Target: 10% Variation)
f
OSC
R
T
=100kΩ
440 520 600 kHz
Switch Frequency Range
0.1 1 MHz
Maximum Duty Cycle D
MAX
f=500kHz 88 90 %
Minimum On-time (Note 3) t
ON-TIME
f=500kHz 200 ns
ENABLE LOGIC AND DIMMING LOGIC
EN High Voltage V
EN_H
2.4 V
EN Low Voltage V
EN_L
0.5 V
PWM Logic for External Dimming
V
DIM_H
2.5 V
V
DIM_L
0.3 V
PWM Dimming Minimum Pulse
Width (Note 3)
t
PWM_MIN
3/f
OSC
µs