AP3608E Datasheet, PDF (1/15 Pages) BCD Semiconductor Manufacturing Limited – EIGHT-CHANNEL CONSTANT CURRENT SINK WITH CURRENT MATCH

Data Sheet
EIGHT-CHANNEL CONSTANT CURRENT SINK WITH CURRENT MATCH
General Description
Features
AP3608E
The AP3608E is an eight-channel constant current sink
with current match used for LED driver. It uses an
external resistor to set the current for eight LED strings
with an accuracy of ±1.5%. The full scale LED current
can be adjusted from 10mA to 100mA for each chan-
nel. The LED light can be adjusted by PWM dimming
function.
The device can keep working when LED opens with-
out damage. It features under voltage lockout protec-
tion and over temperature protection.
The AP3608E has four interface terminals (FB, SDB,
FBX and SDBX pins). The first two terminals allow
the device to work with a DC/DC converter to drive
LED arrays for good performance. And the other two
enable the device to be connected in parallel.
The AP3608E is available in QFN-4×4-24, TSSOP-
20(EDP) and SOIC-20 packages.
· Input Voltage Range: 4.2V to 5.5V
· Typical Output Current: 480mA (60mA/1V per
Channel)
· Maximum Output Current: 800mA (100mA/1.5V
per Channel)
· Current Match Accuracy: ±1.5%
· PWM Dimming Control
· Open LED Self-check and Protection
· Under Voltage Lockout Protection
· Over Temperature Protection
· FBX and SDBX Pins Enable Parallel Application
Applications
· Notebook
· LCD Display Modules
· LCD Monitor
· LCD TV
QFN-4×4-24
TSSOP-20(EDP)
SOIC-20
Figure 1. Package Types of AP3608E
Mar. 2011 Rev. 1. 5
BCD Semiconductor Manufacturing Limited
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