BL8581A
PWM or Singl-Wire Dimming, 4-Channels WLED Linear Driver
DESCRIPTION
The BL8581A is a CMOS based White/Blue
LED driver with stand-alone capability. The
driver is primarily designed for LED
backlighting of LCD display powered by Li-ion
battery With its high efficiency, low standby
current and wide range of input supply
voltage, the BL8581A is suitable for
applications such as portable device display
and keypad backlighting. It can realize PWM
or single-wire dimming control through EN pin.
BL8581A has four LED channels with MSOP-
8 or QFN 3X3 -16 package.
FEATURES
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2.7 to 5.5V input range
Single-wire dimming control with linear
16- steps
PWM dimming control
LED sink current of max. 20mA
Independent current sink circuit for each
LED output
Low standby current
High accuracy current match on each
channel
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APPLICATIONS
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Small Size Color LCD Backlights Driver
Mobile Phone, Portable DeviEN Keypad
Backlights Driver
TYPICAL APPLICATION
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BELLING [ SHANGHAI BELLING CO., LTD. ]
