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IS31LT3178 - 10-TO-200MA CONSTANT-CURRENT LED DRIVER

Download the IS31LT3178 datasheet PDF. This datasheet also covers the IS31LT3177 variant, as both devices belong to the same 10-to-200ma constant-current led driver family and are provided as variant models within a single manufacturer datasheet.

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.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (IS31LT3177-Lumissil.pdf) that lists specifications for multiple related part numbers.

Datasheet Details

Part number IS31LT3178
Manufacturer Lumissil
File Size 574.59 KB
Description 10-TO-200MA CONSTANT-CURRENT LED DRIVER
Datasheet download datasheet IS31LT3178 Datasheet

📁 Similar Datasheet

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Other Datasheets by Lumissil

Part Number Description
IS31LT3170 10-TO-150MA CONSTANT-CURRENT LED DRIVER
IS31LT3171 10-TO-150MA CONSTANT-CURRENT LED DRIVER
IS31LT3172 10-TO-200MA CONSTANT-CURRENT LED DRIVER
IS31LT3173 10-TO-200MA CONSTANT-CURRENT LED DRIVER
IS31LT3177 10-TO-200MA CONSTANT-CURRENT LED DRIVER

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.

View original datasheet text
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.