LM3519 High Frequency Boost White LED Driver

National Semiconductor

Description

LM3519 High Frequency Boost White LED Driver with High-Speed PWM Brightness Control September 2005 LM3519 High Frequency Boost White LED Driver with.
The LM3519 drives up to 4 white LEDs with constant current to provide LCD backlighting in handheld devices.

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Datasheet Specifications

Part number: LM3519
Manufacturer: National Semiconductor
File Size: 1.35 MB
Datasheet: LM3519_NationalSemiconductor.pdf
Description: High Frequency Boost White LED Driver

Features

* a proprietary PFM regulation architecture with switching frequencies between 2MHz to 8MHz, minimizing inductor size. Over-voltage protection circuitry and high frequency operation permit the use of low-cost small output capacitors. During shutdown, the output is disconnected from the input in order

Applications

* n LCD, White LED Backlighting on Mobile Phones n Digital Still Cameras and PDAs n General Purpose LED Lighting in Handheld Devices Typical Application 20160201 FIGURE 1. Typical Application Circuit © 2005 National Semiconductor Corporation DS201602 www. national. com LM3519 Connection Diagram

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LM3519 High Frequency Boost White LED Driver National Semiconductor

National Semiconductor LM3519-like datasheet