A8290 Datasheet | AiT Semiconductor

DESCRIPTION The LEADCHIP A8290 is a high-voltage adjustable current source with accurate temperature pensation. The device is designed to provide a constant current source determined by an external sense resistor R .SENSE The current is adjustable from 10m A to 20m A 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 1020m A. 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 10m A to 20m A via changing RSENSE - Power dissipation can be adjusted - Easy to use, only 3 pins and very little external ponents are needed - Can be paralleled for higher current - Temperature pensated - 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 Ai T provides all Ro HS products Suffix “ V “ means Halogen free Package -1- Ai T Semiconductor Inc. .ait-ic. PIN DESCRIPTION LED DRIVER WIDE RANGE, LINEAR LED DRIVER Pin # 1 2 3 TOP VIEW Symbol IS VB...