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AiT Semiconductor |
AiT Semiconductor Inc.
www.ait-ic.com
A8240
LED BACKLIGHT DRIVER
WLED LINEAR DRIVER FOR LI-ION BATTERY APPLICATION
DESCRIPTION
FEATURES
The A8240 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 A8240 is suitable for applications such
as portable device display and keypad backlighting.
A8240 has four LED channels.
No external component required
PWM dimming control available
Low noise and EMI
LED sink current of 20mA
Independent current sink circuit for each LED output
Versatile supply voltage range
Low standby current
High accuracy current match on each channel
Available in MSOP8 Package
The A8240 is available in MSOP8 package.
ORDERING INFORMATION
Package Type
Part Number
MSOP8
MS8
A8240MS8R
A8240MS8VR
V: Halogen free Package
Note
R: Tape & Reel
SPQ: 3,000pcs/Reel
AiT provides all RoHS products
Suffix “ V “ means Halogen free Package
APPLICATION
Small Size Color LCD Backlights Driver
Mobile Phone, Portable DeviEN Keypad Backlights
Driver
TYPICAL APPLICATION
REV2.0
- NOV 2011 RELEASED, OCT 2014 UPDATED -
-1-
AiT Semiconductor Inc.
www.ait-ic.com
PIN DESCRIPTION
A8240
LED BACKLIGHT DRIVER
WLED LINEAR DRIVER FOR LI-ION BATTERY APPLICATION
Pin #
1,4
2
3
5,6,7,8
Symbol
GND
EN
VCC
LED1-LEDn
Top View
Function
Ground. In A8240, for good LED current match, it is recommended to tie the
two GND pins together by external copper.
Chip enable pin. High level activates the chip. Connect this pin to VCC if not
used, do not leave this pin floating.
Power Supply
RGB or WLED Cathode Connection Pin
REV2.0
- NOV 2011 RELEASED, OCT 2014 UPDATED -
-2-
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