User Manual

Data Sheet
5 CHANNEL CHARGE PUMP CURRENT SINK FOR LED DRIVER AP3615
Jan. 2013 Rev. 1. 3 BCD Semiconductor Manufacturing Limited
5
Electrical Characteristics
V
IN
=3.6V, V
EN
=V
IN
, T
A
=25ºC, C
IN
=C1=C2=C
OUT
=1μF, V
F
(forward voltage)=3.2V, unless otherwise noted.
Parameter Symbol Conditions Min Typ Max Unit
Input Section
Input Voltage V
IN
I
D
=0mA to 100mA 2.8 5.5 V
Under Voltage Lockout Threshold V
IN
Falling 2.2 V
Under Voltage Lockout Hysteresis 250 mV
Supply Current I
CC
No Load 1.7 3 mA
Shutdown Supply Current I
SHDN
V
EN
=GND 3 10
μA
Charge Pump Section
Switch Frequency f
OSC
V
IN
=3.0V, 1.5x Mode 0.7 1 1.3 MHz
1x Mode to 1.5x Mode Transition
Voltage (V
IN
Falling)
V
1.5X
V
D
=3.2V,
I
D1
=I
D2
=I
D3
=I
D4
=I
D5
=20mA
3.5 3.6 V
1.5x Mode to 1x Mode Transition
Voltage (V
IN
Rising)
V
1X
V
D
=3.2V,
I
D1
=I
D2
=I
D3
=I
D4
=I
D5
=20mA
3.7 3.8 V
Current Source Section
WLED Current I
D
100% Setting,
3.0V≤V
IN
≤5.0V
T
A
=-40ºC to 85ºC
18.5 20 21.5 mA
Current Matching Between any
Two Outputs
I
D-Match1
V
D1
=V
D2
=V
D3
=V
D4
=V
D5
=3.2V -3 3 %
Current Matching Between any
Two Outputs
I
D-Match2
V
D1
=V
D2
=V
D3
=V
D4
=V
D5
=3.0V
to 4.0V
V
IN
=3.2V to 5.0V
-3.5 3.5 %
Enable Section
EN High Level Threshold Voltage V
IH
1.5 V
EN Low Level Threshold Voltage V
IL
0.5 V
EN Input Current I
EN
V
EN
= 0V to 5V 1 10
μA
EN Low to Shutdown Delay t
SHDN
1 ms
EN Low Time for Dimming t
LO
0.1 0.3
ms
EN High Time for Dimming t
HI
0.1
ms
Total Device
Soft-start Time t
SS
I
D
=100mA Total 200
μs
Inrush Current I
INRUSH
V
IN
=3.2V, I
D
=100mA Total 320 mA
Over Voltage Protection V
OVP
Note 2 5.5 V
Thermal Shutdown T
OTSD
160 ºC
Thermal Shutdown Hysteresis T
HYS
20 ºC
Thermal Resistance
(Junction to Case)
θ
JC
QFN-3×3-16 15 ºC/W
Note 2: Open circuit at any WLED that is programmed to be in the on state.