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PDF A8290 Data sheet ( Hoja de datos )

Número de pieza A8290
Descripción LED DRIVER
Fabricantes AiT Semiconductor 
Logotipo AiT Semiconductor Logotipo



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No Preview Available ! A8290 Hoja de datos, Descripción, Manual

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 10-
20mA. 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 Package
B : Bulk Package
V: Halogen free Package
AiT provides all RoHS products
Suffix “ V “ means Halogen free Package
-1-

1 page




A8290 pdf
AiT Semiconductor Inc.
www.ait-ic.com
A8290
LED DRIVER
WIDE RANGE, LINEAR LED DRIVER
TYPICAL PERFORMANCE CHARACTERISTICS
All test done at ISET = 20mA, unless otherwise specified.
1. Output current vs. VA-B
2. Temperature characteristics
VA-B vs. Output Current
IA-B vs. Temperature
REV1.0 - NOV 2011 RELEASED -
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