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ACE714 - High Efficiency Low Noise PFM Step-up DC/DC Converter

Description

backlight in cell phones, PDAs, and other handheld devices.

Features

  • allowing series connection of the white LEDs so that the LED currents are identical for uniform brightness. An enable input can be pulsed repeatedly to adjust LEDs brightness. The fast 3MHz operation frequency allows for smaller capacitor and inductor. Fault condition protection uses cycle-by cycle current limiting to sense maximum inductor current and over-voltage protection. The 0.2V low reference voltage minimized the power loss across the current sense resistor. The converter can operate fro.

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Datasheet preview – ACE714

Datasheet Details

Part number ACE714
Manufacturer ACE Technology
File Size 422.59 KB
Description High Efficiency Low Noise PFM Step-up DC/DC Converter
Datasheet download datasheet ACE714 Datasheet
Additional preview pages of the ACE714 datasheet.

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Full PDF Text Transcription

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ACE714 High Efficiency Low Noise PFM Step-up DC/DC Converter Description The ACE714 veriable frequency step-up Converter drives white LEDs with a constant current to provide backlight in cell phones, PDAs, and other handheld devices. It features allowing series connection of the white LEDs so that the LED currents are identical for uniform brightness. An enable input can be pulsed repeatedly to adjust LEDs brightness. The fast 3MHz operation frequency allows for smaller capacitor and inductor. Fault condition protection uses cycle-by cycle current limiting to sense maximum inductor current and over-voltage protection. The 0.2V low reference voltage minimized the power loss across the current sense resistor.
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