LM3501 - Synchronous Step-up DC/DC Converter

Product Overview

National Semiconductor

Part number	LM3501
Manufacturer	National Semiconductor
File Size	1.04 MB
Description	Synchronous Step-up DC/DC Converter
Datasheet	LM3501 Datasheet
Additional preview pages of the LM3501 datasheet.

The LM3501 is a fixed-frequency step-up DC/DC converter that is ideal for driving white LEDs for display backlighting and other lighting functions.

n Synchronous rectification, high efficiency and no external schottky diode required n Uses small surface mount components n Can drive 2-5 white LEDs in series (may function with more low VF LEDs) n 2.7V to 7V input range n True shutdown isolation, no LED leakage current n DC voltage LED current control n Input undervoltage lockout n Internal output over-voltage protection (OVP) circuitry, with no external zener diode required LM3501-16: 15.5V OVP; LM3501-21: 20.5V OVP. n Requires only a small 1.

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Published: Apr 28, 2010 |