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BL8548 Datasheet Variable Frequency Step-up DC/DC Converter

Manufacturer: BELLING

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Datasheet Details

Part number BL8548
Manufacturer BELLING
File Size 375.36 KB
Description Variable Frequency Step-up DC/DC Converter
Datasheet download datasheet BL8548 Datasheet

General Description

The BL8548 variable frequency step-up Converter drives white LEDs with a constant current to provide backlight in cell phones, PDAs, and other hand-held devices.

It

Overview

BL8548 Max.

3MHz, Variable Frequency Step-up DC/DC Converter.

Key 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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