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SKY81290 - 1.2 A Single Flash LED Driver

General Description

The SKY81290 is a high efficiency, 1.2 A high current boost converter with a programmable constant current sink.

It is an ideal power solution for LED photo flash applications in all single cell, Li-ion powered products.

Key Features

  • Input voltage range: 2.7 V to 5.5 V.
  • Single channel flash output.
  • Up to 1.2 A regulated output current.
  • Up to 88% efficiency.
  • Switching frequency: 2.0 MHz.
  • Separate flash enable.
  • Single resistor sets Flash and Movie Mode current.
  • Flash safety timer.
  • AS2Cwire single wire programming:.
  • Movie Mode current.
  • Flash/Movie Mode current ratio.
  • Maximum flash current ratio.
  • True Load Discon.

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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.

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DATA SHEET SKY81290: 1.2 A Single Flash LED Driver With AS2C Interface Applications • LED photo flash/torch devices • Camera-enabled mobile devices • Cellphones/smartphones • Multimedia mobile phones Description The SKY81290 is a high efficiency, 1.2 A high current boost converter with a programmable constant current sink. It is an ideal power solution for LED photo flash applications in all single cell, Li-ion powered products. The SKY81290 maintains output current regulation by switching the internal high-side and low-side switch transistors. The transistor switches are pulse-width modulated at a fixed frequency of 2.0 MHz.