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IS31BL3228B - WHITE LED DRIVER

This page provides the datasheet information for the IS31BL3228B, a member of the IS31BL3228A WHITE LED DRIVER family.

Datasheet Summary

Description

The IS31BL3228A (IS31BL3228B) is a low noise, constant frequency charge pump DC/DC converter for white LED applications.

The IS31BL3228A (IS31BL3228B) is capable of driving up to four (six) channels of LEDs at preset 20mA per channel from a 2.8V to 5.5V input.

Features

  • VCC range: 2.8V to 5.5V.
  • Fully programmable current with single wire.
  • 14 current levels.
  • Drives up to four (IS31BL3228A)/six (IS31BL3228B) channels of LEDs.
  • No inductors, low noise operation.
  • Built-in thermal protection.
  • Automatic soft start.
  • Low shutdown current: ISD< 3μA.
  • UTQFN-12 (2mm×2mm) package.
  • RoHS & Halogen-Free Compliance.
  • TSCA Compliance.

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Datasheet preview – IS31BL3228B

Datasheet Details

Part number IS31BL3228B
Manufacturer Lumissil
File Size 422.60 KB
Description WHITE LED DRIVER
Datasheet download datasheet IS31BL3228B Datasheet
Additional preview pages of the IS31BL3228B datasheet.

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Full PDF Text Transcription

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IS31BL3228A/B WHITE LED DRIVER GENERAL DESCRIPTION The IS31BL3228A (IS31BL3228B) is a low noise, constant frequency charge pump DC/DC converter for white LED applications. The IS31BL3228A (IS31BL3228B) is capable of driving up to four (six) channels of LEDs at preset 20mA per channel from a 2.8V to 5.5V input. The current sinks may be operated individually or in parallel for driving higher current LEDs. Only one 1μF small capacitor (at C+ thru C-) and two small 2.2μF capacitors (at VCC and VOUT) are needed, it makes this part ideally suited for small, battery-powered applications. The serial digital input is used to enable, disable, and set current for each LED with 14 settings down to 1.8mA.
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