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The IS32LT3178-STLA3-EB is a adjustable linear current devices with excellent temperature stability. A single resistor is all that is required to set the operating current from 10mA to 150mA (the SOP-8-EP package can deliver up to 200mA). The devices can operate from an input voltage from 2.9V to 40V with a minimal voltage headroom of 1.0V (Typ.) at 150mA. Designed with a low dropout voltage; the device can drive LED strings close to the supply voltage without switch capacitors or inductors.
The IS32LT3178 simplifies designs by providing a stable current without the additional requirement of inductors, FETs or diodes. The complete constant current driver requires only a current set resistor and a small PCB area making designs both efficient and cost effective. The EN Pin of the IS32LT3178 can function as the PWM signal input used for MCU PWM dimming. As a current sink it is ideal for LED lighting applications or current limiter for power supplies.
|Sub-Category||LED Drivers - DC In|
|Eval Board Part Number||2521-IS32LT3178-STLA3-EB-ND|
|Eval Board Supplier||Lumissil Microsystems|
Normally In Stock
2.6 ~ 40 V
|Voltage Out (Max)||
|Outputs and Type||
|Efficiency @ Conditions||
- Not Given
Current Limit (Adj. or Fixed)
Shutdown, Enable, Standby
Under Voltage Protection, Brown-Out
- Not Given
|Component Count + Extras||
5 + 9
|Application / Target Market||
Automotive: Exterior Lighting
Automotive: Interior Lighting
Lighting: LED Commercial Lighting
Lighting: LED Home Lighting
|Main I.C. Base Part||
|Date Created By Author||2018-10|
|Date Added To Library||2021-08|
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