LED DRIVER
AiT Semiconductor Inc.
www.ait-ic.com
A8290
LED DRIVER WIDE RANGE, LINEAR LED DRIVER
DESCRIPTION
The LEADCHIP A8290 is...
Description
AiT Semiconductor Inc.
www.ait-ic.com
A8290
LED DRIVER WIDE RANGE, LINEAR LED DRIVER
DESCRIPTION
The LEADCHIP A8290 is a high-voltage adjustable current source with accurate temperature compensation. The device is designed to provide a constant current source determined by an external sense resistor R .SENSE The current is adjustable from 10mA to 20mA with less than 10% error while input changes from 5V to 90V. With an external resistor (R1 in Figure 1) between VA and IS pin, the heat in the IC can be significantly reduced while keeping the summation of IC and R1 current to be constant. This is extremely useful in the area that power lines are not very stable. A typical application for the A8290 is to drive LEDs with a constant current varies from 1020mA. They can also be used in parallel to provide higher current according to the bias.
The A8290 is available in TO-92 Package.
TYPICAL APPLICATION
FEATURES
Wide operation range: from 5V to 90V(VA-B)
ILED can be programmed from 10mA to 20mA via changing RSENSE
Power dissipation can be adjusted Easy to use, only 3 pins and very little
external components are needed Can be paralleled for higher current Temperature compensated Available in TO-92 packages
APPLICATIONS
Industrial lamp indicators LED driver Accent lighting Automotive Constant current source Constant current sink
REV1.0 - NOV 2011 RELEASED -
ORDERING INFORMATION
Package Type
Part Number
TO-92
A8290ZI Z
A8290ZVI
Note
I : A : Ammo Pac...
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