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STLED25 - 5 channels step-up white LED driver

Description

continue operating driver channels that are functioning normally, while avoiding excessive power consumption or associated thermal issues.

Features

  • Operating input voltage range from 2.3 V to 5.5 V.
  • ± 7.5% LED current accuracy.
  • Two LEDs in series per channel.
  • High side current source.
  • Up to 125 mA of total LED current.
  • 86% efficiency at 100 mA.
  • PWM dimming with automatic shutdown time window.
  • 2.5 MHz switching frequency.
  • CSP 12 bumps 0.4 mm. pitch 1.4 x 1.8 mm.

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Full PDF Text Transcription

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STLED25 5 channels step-up white LED driver Datasheet − production data Features ■ Operating input voltage range from 2.3 V to 5.5 V ■ ± 7.5% LED current accuracy ■ Two LEDs in series per channel ■ High side current source ■ Up to 125 mA of total LED current ■ 86% efficiency at 100 mA ■ PWM dimming with automatic shutdown time window ■ 2.5 MHz switching frequency ■ CSP 12 bumps 0.4 mm. pitch 1.4 x 1.8 mm. Applications ■ LCD backlight with up to 10 LEDs ■ Cellular phones ■ PDAs Description Flip-Chip 12 bumps (1.4 x 1.8 mm.) continue operating driver channels that are functioning normally, while avoiding excessive power consumption or associated thermal issues. The control technique is able to maintain the efficiency close to 87% at medium load and higher than 85% at light or full load.
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