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LM3423Q1MHX
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LM3423Q1MHX

  • Category:Inductorless DC/DC regulator (charge pump)
  • Product Name:Controller for N-channel constant current LED driver
  • Manufacturers:NSC
  • Production Batch Number:11+
  • Encapsulation:TSSOP EXP
  • Stock Status:There is stock
  • Stock Quantity:12600
  • Minimum order quantity: 1
  • Details:Click here to find pdf information on the LM3423Q1MHX
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  • Product introduction

peculiarity

  • LM3421Q1/LM3423Q1 are automotive AEC-Q100 standard class 1 qualified (-40°C to +125°C operating junction temperature) and the LM3421Q0/LM3423Q0 AEC - Q100 standard class 0 qualified (-40°C to +150°C class C operating junction temperature)
  • Range V from 4.5V to 75V
  • Adjustable high-side current sensing
  • 2Ω, 1A peak MOSFET gate driver
  • Input voltage and output overvoltage protection
  • PWM and analog dimming
  • Cycle-by-cycle current limit
  • Programmable switching frequency
  • "Zero current shutdown and thermal shutdown
  • LED output status flag (LM3423/23Q1/23Q0 only)
  • Fault Status Flags and Timers (LM3423/23Q1/23Q0 only)

illustrate

The LM3421/23 are versatile high voltage LED driver N-channel MOSFET controllers. They can be easily configured in buck, boost, buck-boost and SEPIC topologies. This flexibility, along with a 75V rated input voltage, makes the LM3421/23 ideal for a large number of home lighting applications.

Adjustable high-side current sense voltage maximizes the efficiency of tightly regulated LED current. The LM3421/23 uses the Predicted Off-Time (Pro) Control, which is a combination of peak current mode control and a predictive shutdown timer. This control method simplifies loop compensation design while providing inherent input voltage feedforward compensation.

The LM3421/23 unit includes a high voltage start-up regulator over a wide input voltage range of 4.5V to 75V. The adjustable switching frequency up to 2.0 MHz is designed with an internal PWM controller, resulting in a compact solution. Other features include "zero current" shutdown, analog dimming, PWM dimming, overvoltage protection, undervoltage lockout, cycle-by-cycle current limit, and thermal shutdown.

The LM3423 also includes LED output status flags, fault flags, a programmable fault timer, and logic inputs to select the polarity of the dimmed output driver.

LM3421Q1/23Q1 is AEC - Q100 Standard Class 1 qualified, LM3421Q0/23Q0 AEC - Q100 Standard Class 0 qualified.


apply

  • LED drivers - buck, boost, buck-boost, and SEPIC
  • Indoor and outdoor areas SSL
  • Car
  • General lighting
  • Constant current regulator

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Model Manufacturers lot number encapsulation illustrate
LM3423Q1MHX NSC 11+ TSSOP EXP Controller for N-channel constant current LED driver

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