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.
Manufacturer | Lumissil Microsystems |
---|---|
Category | Lighting |
Sub-Category | LED Drivers - DC In |
Eval Board Part Number | 2521-IS32LT3178-STLA3-EB-ND |
Eval Board Supplier | Lumissil Microsystems |
Eval Board |
Normally In Stock
|
Voltage In |
2.6 ~ 40 V
|
Topology |
Linear
|
Current Out |
150 mA
|
Voltage Out (Max) |
40 V
|
Outputs and Type |
1 Non-Isolated
|
Efficiency @ Conditions |
- Not Given
|
Features |
Current Limit (Adj. or Fixed)
PWM Interface Shutdown, Enable, Standby Thermal Protection Under Voltage Protection, Brown-Out |
Switching Frequency |
- Not Given
|
Component Count + Extras |
5 + 9
|
Design Author |
Lumissil Microsystems
|
Application / Target Market |
Automotive: Exterior Lighting
Automotive: Interior Lighting Lighting: LED Commercial Lighting Lighting: LED Home Lighting |
Main I.C. Base Part |
IS32LT3178
|
Date Created By Author | 2018-10 |
Date Added To Library | 2021-08 |