BL8585
BL8585 is LINEAR LED DRIVER manufactured by SHANGHAI BELLING.
DESCRIPTION
The BL8585 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 Rsense. 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 BL8585 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. This device is available in TO-92 package.
TYPICAL APPLICATION CIRCUIT
WIDE RANGE, LINEAR LED DRIVER
Features
- Wide operation range: from 5V to 90V(VA-B)
- TO-92 packages available
- 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
APPLICATIONS
- Industrial lamp indicators
- LED driver
- Accent lighting
- Automotive
- Constant current source
- Constant current sink
PIN CONFIGURATIONS
R1
Rsense
{VLED
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MARKING INFORMATION
Marking information
Marking
Description
8585...
