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IS31LT3135 - MAIN/SUB DUAL-CHANNEL LED DRIVER

Datasheet Summary

Description

IS31LT3135 is a main/sub dual-channel LED driver.

When the main channel works，it is a constant current source driving the main LED and the current is set by an external resistor connected to the ISET pin.

It needs only 0.1v dropout voltage for 200mA output current.

Features

  • Power supply undervoltage detect Main channel short protection Over-temperature protection Input voltage range: 2.7V~5.5V Main and sub-channel current set by external resistor Main channel Vdp=0.1V Low quiescent current Assembled in SOP-8 package.

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Datasheet Details

Part number IS31LT3135
Manufacturer ISSI
File Size 277.91 KB
Description MAIN/SUB DUAL-CHANNEL LED DRIVER
Datasheet download datasheet IS31LT3135 Datasheet
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Full PDF Text Transcription

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IS31LT3135 MAIN/SUB DUAL-CHANNEL LED DRIVER November 2011 GENERAL DESCRIPTION IS31LT3135 is a main/sub dual-channel LED driver. When the main channel works，it is a constant current source driving the main LED and the current is set by an external resistor connected to the ISET pin. It needs only 0.1v dropout voltage for 200mA output current. When the sub-channel works, the chip will pull down the sub LED’s cathode to ground. Normally there is only one channel on, the main channel and the sub channel can switch between each other. Sweeping power supply from high voltage to low voltage, main channel switches to sub-channel while UV pin is below the undervoltage threshold 1.17V (IS31LT3135-V1 typical) or 1.23V (IS31LT3135-V2 typical).
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