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IS31LT3117 - 4-CHANNEL CONSTANT CURRENT REGULATOR

Datasheet Summary

Description

The IS31LT3117 is a 4-channel, linear regulated, constant current LED driver which can provide 4 equal currents outputs of up to 350mA per channel to drive high brightness LEDs over an input voltage range of 6V to 53V, while maintaining an output leakage current of less than 1µA.

Features

  • a PWM input to enable simple dimming control using a digital control signal. The recommended frequency range of the PWM signal is 4kHz ~ 100kHz. The IS31LT3117 provides a unique over temperature protection scheme. A hard shutdown which turns off all LED currents occurs if the die junction temperature exceeds the maximum value of 160°C. However, as the die junction temperature rises up to over 130°C (Typ. ), the output current will begin to roll off at a rate of -2.22%/°C (Typ. ). If the die temper.

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Datasheet Details

Part number IS31LT3117
Manufacturer Lumissil
File Size 588.00 KB
Description 4-CHANNEL CONSTANT CURRENT REGULATOR
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IS31LT3117 53V, 350MA, 4-CHANNEL CONSTANT CURRENT REGULATOR WITH OTP July 2021 GENERAL DESCRIPTION The IS31LT3117 is a 4-channel, linear regulated, constant current LED driver which can provide 4 equal currents outputs of up to 350mA per channel to drive high brightness LEDs over an input voltage range of 6V to 53V, while maintaining an output leakage current of less than 1µA. The output current is easily programmed using a single, tiny external resistor. The outputs of the IS31LT3117 can be connected in parallel to allow greater than 350mA output current. The IS31LT3117 also features a PWM input to enable simple dimming control using a digital control signal. The recommended frequency range of the PWM signal is 4kHz ~ 100kHz.
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