LM3429MHX/NOPB

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LM3429MHX/NOPB

N-Channel Controller for Constant Current LED Drivers

Packaging

Package | PIN: PWP | 14
Temp: Q (-40 to 125)
Carrier: Cut Tape
Qty Price
1-9 $2.05
10-24 $1.85
25-99 $1.72
100-249 $1.51
250-499 $1.41
500-749 $1.20
750-999 $1.01
1000+ $0.97

Features

  • LM3429-Q1 is AEC-Q100 Grade 1 Qualified for
    Automotive Applications
  • VIN Range From 4.5 V to 75 V
  • Adjustable Current Sense Voltage
  • High-Side Current Sensing
  • 2-Ω, 1-A Peak MosFET Gate Driver
  • Input Undervoltage Protection
  • Overvoltage Protection
  • PWM Dimming
  • Analog Dimming
  • Cycle-by-Cycle Current Limit
  • Programmable Switching Frequency
  • Low Profile 14-lead HTSSOP Package
  • Thermal Shutdown

Texas Instruments  LM3429MHX/NOPB

The LM3429 is a versatile high voltage N-channel MosFET controller for LED drivers. It can be easily configured in buck, boost, buck-boost and SEPIC topologies. This flexibility, along with an input voltage rating of 75V, makes the LM3429 ideal for illuminating LEDs in a very diverse, large family of applications.

Adjustable high-side current sense voltage allows for tight regulation of the LED current with the highest efficiency possible. The LM3429 uses Predictive Off-time (PRO) control, which is a combination of peak current-mode control and a predictive off-timer. This method of control eases the design of loop compensation while providing inherent input voltage feed-forward compensation.

The LM3429 includes a high-voltage startup regulator that operates over a wide input range of 4.5 V to 75 V. The internal PWM controller is designed for adjustable switching frequencies of up to 2 MHz, thus enabling compact solutions. Additional features include analog dimming, PWM dimming, overvoltage protection, undervoltage lock-out, cycle-by-cycle current limit, and thermal shutdown.