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LM3519MK-20/NOPB - 

Led Driver, Boost, PWM Dimming, 2.7V-5.5V in, 8MHz switch, 18.9V/20mA out, SOT-23-6

LM3519MK-20/NOPB - Led Driver, Boost, PWM Dimming, 2.7V-5.5V in, 8MHz switch, 18.9V/20mA out, SOT-23-6

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Manufacturer Part No:
LM3519MK-20/NOPB
Newark Part No.:
79K7826
Technical Datasheet:
(EN)
Availability:
No Longer Manufactured
See all Technical Docs

Product Information

:
No SVHC (15-Jun-2015)
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Product Overview

The LM3519MK-20/NOPB is a high frequency boost white LED Driver with high-speed PWM brightness control. It drives up to 4 white LEDs with constant current to provide LCD backlighting in handheld devices. The LED current is internally set to 20mA. The series connection allows the LED current to be identical for uniform brightness and minimizes the number of traces to the LEDs. Brightness control is achieved by applying a PWM signal on enable with frequencies up to 30kHz. It features a proprietary PFM regulation architecture with switching frequencies between 2 to 8MHz, minimizing inductor size. Overvoltage 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 to avoid leakage current path through the LEDs to ground.
  • Drives 2 to 4 LEDs at 20mA
  • Up to 30kHz PWM dimming control capability
  • >80% Peak efficiency
  • Up to 8MHz switching frequency
  • True shutdown isolation
  • Overvoltage protection
  • Green product and no Sb/Br

Applications

Industrial, LED Lighting

Warnings

Device has limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates.

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