TEXAS INSTRUMENTS  LM3407MY/NOPB  Led Driver, Buck, PWM Dimming, 4.5V-30V in, 1MHz switch, 27V/350mA out, MSOP-8


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Product Overview

The LM3407MY/NOPB is a constant current output floating buck Switching Converter designed to provide constant current to high power LEDs. The LM3407 has an integrated power N-MOSFET that makes the application solution compact and simple to implement. An external 1% thick-film resistor allows the converter output voltage to adjust as needed to deliver constant current within 10% accuracy to a serially connected LED string of varying number and type. Converter switching frequency is adjustable from 300kHz to 1MHz. The LM3407 features a dimming input to enable LED brightness control by pulse width modulation (PWM). Additionally, a separate enable pin allows for low power shutdown. Input UVLO and output open-circuit protection ensure a robust LED driver solution. The LM3407 is a constant current output floating buck switching converter with wide input voltage range and low feedback current sense reference voltage.
  • Accurate constant current output
  • Independent device enable (CMOS compatible) and PWM dimming control
  • Converter switching frequency adjustable from 300kHz to 1MHz
  • No external control loop compensation required
  • Supports ceramic and low ESR output capacitors
  • Input under-voltage lock out (UVLO)
  • Thermal shutdown protection
  • 0.1 to 0.9VIN Output voltage range
  • 150°C Junction temperature
  • 165°C Thermal shutdown threshold
  • 25°C Thermal shutdown hysteresis


Power Management; Lighting
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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Product Information

  • Device Topology Buck, Constant Current
  • No. of Outputs 1Outputs
  • Output Current 350mA
  • Output Voltage 27V
  • Driver Case Style MSOP
  • No. of Pins 8Pins
  • Input Voltage Min 4.5V
  • Input Voltage Max 30V
  • Switching Frequency 1MHz
  • Operating Temperature Min -40°C
  • Operating Temperature Max 125°C
  • Packaging Cut Tape
  • Dimming Control Type PWM
  • MSL MSL 1 - Unlimited
  • Input Voltage 4.5V to 30V
  • LED Driver Application Automotive Lighting, General Illumination
  • SVHC No SVHC (15-Jun-2015)

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  • Availability

    Availability:  666

    • 666 in stock for same day shipping
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      More stock available week commencing 6/27/16

    Price for: Each (Supplied on Cut Tape)

    Minimum order quantity: 1

    Order multiple quantity: 1

    Price: $1.63 $1.63



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    Led Driver, Buck, PWM Dimming, 4.5V-30V in, 1MHz switch, 27V/350mA out, MSOP-8

    Availability:​ 1,000  

    Price for: Each (Supplied on Full Reel)

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