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IS31LT3177 - 10-TO-200MA CONSTANT-CURRENT LED DRIVER

Datasheet Summary

Description

The IS31LT3177 and IS31LT3178 are adjustable linear current devices with excellent temperature stability.

A single resistor is all that is required to set the operating current from 10mA to 200mA.

Features

  • Low-side current sink - Adjustable from 10mA to 150mA (SOT236)/200mA (SOP-8-EP) with external resistor selection.
  • Wide input voltage range from - 2.9V to 40V (IS31LT3178) - 5V to 40V (IS31LT3177) with a low dropout of typical 1.0V at 150mA.
  • Up to 1kHz PWM input (IS31LT3178 only).
  • ±5% current accuracy.
  • Protection features: - 0.6%/K current roll off at high temp over 145°C for thermal protection - Output current limit - Thermal shutdown.
  • Up to.

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Datasheet Details

Part number IS31LT3177
Manufacturer Lumissil
File Size 574.59 KB
Description 10-TO-200MA CONSTANT-CURRENT LED DRIVER
Datasheet download datasheet IS31LT3177 Datasheet
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IS31LT3177/78 10-TO-200MA CONSTANT-CURRENT LED DRIVER June 2024 GENERAL DESCRIPTION The IS31LT3177 and IS31LT3178 are adjustable linear current devices with excellent temperature stability. A single resistor is all that is required to set the operating current from 10mA 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 IS31LT3177/78 simplifies designs by providing a stable current without the additional requirement of inductors, FETs or diodes.
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