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IS31LT3170 - 10-TO-150MA CONSTANT-CURRENT LED DRIVER

Datasheet Summary

Description

The IS31LT3170 and IS31LT3171 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 150mA.

Features

  • Low-side current sink - Current preset to 10mA - Adjustable from 10mA to 150mA with external resistor selection.
  • Wide input voltage range from - 2.8V to 42V (IS31LT3171) - 5V to 42V (IS31LT3170) with a low dropout of 0.5V.
  • Up to 10kHz PWM input (IS31LT3171 only).
  • Protection features: - 0.2%/K negative temperature coefficient forthermal protection - Open circuit and over voltage protection.
  • Up to 1W power dissipation in a small SOT23-6 package.
  • RoHS compliant (Pb-fr.

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Datasheet Details

Part number IS31LT3170
Manufacturer ISSI
File Size 279.22 KB
Description 10-TO-150MA CONSTANT-CURRENT LED DRIVER
Datasheet download datasheet IS31LT3170 Datasheet
Additional preview pages of the IS31LT3170 datasheet.

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Full PDF Text Transcription

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IS31LT3170/71 10-TO-150MA CONSTANT-CURRENT LED DRIVER Advanced Information July 2014 GENERAL DESCRIPTION The IS31LT3170 and IS31LT3171 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 150mA. The devices can operate from an input voltage from 2.8V to 42V with a minimal voltage headroom of 0.264V. Designed with a low dropout voltage; the device can drive LED strings close to the supply voltage without switch capacitors or inductors. The IS31LT3170/71 simplifies designs by providing a stable current without the additional requirement of input or output capacitors, inductors, FETs or diodes.
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