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IS31BL3228B - WHITE LED DRIVER

Download the IS31BL3228B datasheet PDF. This datasheet also covers the IS31BL3228A variant, as both devices belong to the same white led driver family and are provided as variant models within a single manufacturer datasheet.

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.

Key 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.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (IS31BL3228A-Lumissil.pdf) that lists specifications for multiple related part numbers.

Datasheet Details

Part number IS31BL3228B
Manufacturer Lumissil
File Size 422.60 KB
Description WHITE LED DRIVER
Datasheet download datasheet IS31BL3228B Datasheet

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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
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.