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IS31LT3172 - 10-TO-200MA CONSTANT-CURRENT LED DRIVER

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.

Key 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.

📥 Download Datasheet

Datasheet Details

Part number IS31LT3172
Manufacturer Lumissil
File Size 707.05 KB
Description 10-TO-200MA CONSTANT-CURRENT LED DRIVER
Datasheet download datasheet IS31LT3172 Datasheet

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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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.