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ACT6358 - 40V Step-Up WLED Bias Supplies

This page provides the datasheet information for the ACT6358, a member of the ACT6357_Active 40V Step-Up WLED Bias Supplies family.

Datasheet Summary

Description

The ACT6357 and ACT6358 step-up DC/DC converters drive white LEDs with an externally programmable constant current.

These devices feature integrated, 40V power MOSFETs that are capable of driving up to ten white LEDs in series, providing inherent current matching for uniform brightness.

Features

  • High-Efficiency DC/DC WLED Bias Supply.
  • Internal 40V, 0.55Ω Power MOSFET.
  • Up to 10 WLEDs per String.
  • Two Peak Current Options:.
  • ACT6357: 0.5A.
  • ACT6358: 1A.
  • Supports Analog and PWM LED Dimming.
  • Integrated Over-Voltage Protection (OVP).
  • Programmable Soft-Start Function.
  • Thermal Shutdown.
  • Cycle-by-Cycle Over Current Protection.
  • Tiny TDFN33-8 Package.

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Datasheet preview – ACT6358

Datasheet Details

Part number ACT6358
Manufacturer Active-Semi
File Size 403.92 KB
Description 40V Step-Up WLED Bias Supplies
Datasheet download datasheet ACT6358 Datasheet
Additional preview pages of the ACT6358 datasheet.

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Full PDF Text Transcription

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ACT6357/ACT6358 Rev 1, 15-Nov-12 High-Efficiency, 40V Step-Up WLED Bias Supplies FEATURES • High-Efficiency DC/DC WLED Bias Supply • Internal 40V, 0.55Ω Power MOSFET • Up to 10 WLEDs per String • Two Peak Current Options: − ACT6357: 0.5A − ACT6358: 1A • Supports Analog and PWM LED Dimming • Integrated Over-Voltage Protection (OVP) • Programmable Soft-Start Function • Thermal Shutdown • Cycle-by-Cycle Over Current Protection • Tiny TDFN33-8 Package APPLICATIONS • TFT LCD Displays • Smart Phones • Portable Media Players • GPS/Personal Navigation Devices GENERAL DESCRIPTION The ACT6357 and ACT6358 step-up DC/DC converters drive white LEDs with an externally programmable constant current.
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