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