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LT3755
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LT3755

  • Category:LED driver
  • Product Name:LT3755/LT3755-1/LT3755-2 - 40Vin, 75Vout LED controllers
  • Manufacturers:LT
  • Production Batch Number:11+
  • Encapsulation:QFN-16, MS-16
  • Stock Status:There is stock
  • Stock Quantity:10000
  • Minimum order quantity: 1
  • Details:Click here to find PDF information on the LT3755
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  • Product introduction

LT3755

LT3755/LT3755-1/LT3755-2 - 40Vin, 75Vout LED controllers

peculiarity

  • 3000:1 True Color PWMTMDimming
  • Wide input voltage range: 4.5V to 40V
  • Output voltage up to 75V
  • Constant current and constant voltage regulation
  • 100mV high-side current sensing
  • Can be driven in boost, buck, buck-boost, SEPIC or flyback topologiesLED
  • Adjustable frequency range: 100kHz to 1MHz
  • Open LED protection
  • Programmable undervoltage lockout with hysteresis
  • Improved Open LED Status Pin (LT3755-2)
  • Frequency Synchronization (LT3755-1)
  • PWM disconnect switch driver
  • The CTRL pin provides analog dimming
  • Low shutdown current:
  • Programmable soft-start
  • Thermally enhanced 16-pin QFN (3mm x 3mm) and MSOP packages

description

LT®3755、LT3755-1andLT3755-2beDC/DCThe controller is designed to act as one for driving high currentsLEDThe constant current source is designed. They have been tuned from an inside7.15VThe power supply to drive a lowendexteriorNChannel powerMOSFET。 The fixed-frequency, current-mode architecture enables stable operation over a wide range of supply and output voltages. A voltage referenced to groundFBPins are used as multipleLEDProtects the input of the functional circuit and also allows the converter to act as a constant voltage source. A frequency adjustment pin allows the user to operate in 100kHzreach1MHzto set frequencies to optimize efficiency, performance, or external component size.

LT3755/LT3755-1/LT3755-2atLEDThe high side of the string senses the output current. High-side current sensing is used for drivingLEDThe most flexible solution, allowing boost, buck mode, or buck-Boost mode configuration.PWMInput provides up to3000:1targetLEDDimming ratio, whileCTRLThe inputs provide additional analog dimming capabilities.

 

apply

  • High powerLED
  • Battery charger
  • Accurate current limit voltage regulator

andLT3755Related ICs are:


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LT3755 LT 11+ QFN-16, MS-16 LT3755/LT3755-1/LT3755-2 - 40Vin, 75Vout LED controllers
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