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

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.

Key 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

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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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.