4-Channels WLED Linear Driver
BL8581A
PWM or Singl-Wire Dimming, 4-Channels WLED Linear Driver
DESCRIPTION
The BL8581A is a CMOS based White/Blue LE...
Description
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 MSOP8 or QFN 3X3 -16 package.
FEATURES
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
APPLICATIONS
Small Size Color LCD Backlights Driver Mobile Phone, Portable DeviEN Keypad
Backlights Driver
TYPICAL APPLICATION
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1
MARKING INFORMATION
Product Classification
Marking
BL8581ACE8TR
KB: Product
KB YYBZZ
Code YY: LOT No. B: FAB Code
ZZ: Date Code
Product Classification
Marking
LED1 LED2 LED3 LED4 8 7 65
KB YYBNN
1 2 34 GND EN VCC GND
Top view
BL8581ACJKATR
NC NC NC LED1 16 15 14 13
NC 1
12 LED2
KBA: Product
KBA YYBZZ
Code YY: LOT No B: FAB Code
ZZ: Date Code
NC 2 NC 3
KBA YYBNN
11 LED3 10 LED4
NC 4 5 67
GND GND VCC
9 NC 8 EN
Product Classification
Marking
Top view BL8581ACJKBTR
EN 16
NC 1
NC GND ...
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