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IS31LT3173 - 10-TO-200MA CONSTANT-CURRENT LED DRIVER

This page provides the datasheet information for the IS31LT3173, a member of the IS31LT3172 10-TO-200MA CONSTANT-CURRENT LED DRIVER family.

Datasheet Summary

Description

The IS31LT3172 and IS31LT3173 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 - Current preset to 10mA - Adjustable from 10mA to 200mA with external resistor selection.
  • Wide input voltage range from - 2.5V to 42V (IS31LT3173) - 5V to 42V (IS31LT3172) with a low dropout of typical 1V.
  • Up to 10kHz PWM input (IS31LT3173 only).
  • Protection features: - 0.26%/K negative temperature coefficient at high temp for thermal protection.
  • Up to 1.8W power dissipation in a small SOP-8EP package.
  • RoHS compliant (P.

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Datasheet preview – IS31LT3173

Datasheet Details

Part number IS31LT3173
Manufacturer Lumissil
File Size 707.05 KB
Description 10-TO-200MA CONSTANT-CURRENT LED DRIVER
Datasheet download datasheet IS31LT3173 Datasheet
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IS31LT3172/73 10-TO-200MA CONSTANT-CURRENT LED DRIVER June 2022 GENERAL DESCRIPTION The IS31LT3172 and IS31LT3173 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 2.5V to 42V with a minimal voltage headroom of 1V (typical). Designed with a low dropout voltage; the device can drive LED strings close to the supply voltage without switch capacitors or inductors. The IS31LT3172/73 simplifies designs by providing a stable current without the additional requirement of input or output capacitors, inductors, FETs or diodes.
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