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IS31LT3135 - MAIN/SUB DUAL-CHANNEL LED DRIVER

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.

Key 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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📁 Similar Datasheet

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Other Datasheets by ISSI (now Infineon)

Part Number Description
IS31LT3117 4-CHANNEL CONSTANT CURRENT REGULATOR
IS31LT3170 10-TO-150MA CONSTANT-CURRENT LED DRIVER
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IS31LT3350 40V LED DRIVER
IS31LT3352 40V 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.

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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).