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LT3952A Datasheet

LT3952A Datasheet

60V LED Driver with 4A Switch Current
Part No.: LT3952A
Page: 30 Pages
Size: 2263 KB
Manufacturer: Linear Technology
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Views: 1
Update Time: 2023-12-05 16:12:25
DataSheet: Download

LT3952A Datasheet Applicable Part

Part No. Packing SPQ Marking MSL Pins Temp Range Package Description Buy
LT3952AEFE#PBF Tube 50 LT3952AFE 1 28 -40°C ~ 125°C 28-Lead Plastic TSSOP  
LT3952AEFE#TRPBF Reel 2000 LT3952AFE 1 28 -40°C ~ 125°C 28-Lead Plastic TSSOP  
LT3952AEFE#TRMPBF Reel 500 LT3952AFE 1 28 -40°C ~ 125°C 28-Lead Plastic TSSOP  
LT3952AIFE#PBF Tube 50 LT3952AFE 1 28 -40°C ~ 125°C 28-Lead Plastic TSSOP  
LT3952AIFE#TRPBF Reel 2000 LT3952AFE 1 28 -40°C ~ 125°C 28-Lead Plastic TSSOP  
LT3952AIFE#TRMPBF Reel 500 LT3952AFE 1 28 -40°C ~ 125°C 28-Lead Plastic TSSOP  
LT3952AHFE#PBF Tube 50 LT3952AFE 1 28 -40°C ~ 150°C 28-Lead Plastic TSSOP  
LT3952AHFE#TRPBF Reel 2000 LT3952AFE 1 28 -40°C ~ 150°C 28-Lead Plastic TSSOP  
LT3952AHFE#TRMPBF Reel 500 LT3952AFE 1 28 -40°C ~ 150°C 28-Lead Plastic TSSOP  
LT3952AEFE#WPBF Tube 50 LT3952AFE 1 28 -40°C ~ 125°C 28-Lead Plastic TSSOP  
LT3952AEFE#WTRPBF Reel 2500 LT3952AFE 1 28 -40°C ~ 125°C 28-Lead Plastic TSSOP  
LT3952AEFE#WTRMPBF Reel 500 LT3952AFE 1 28 -40°C ~ 125°C 28-Lead Plastic TSSOP  
LT3952AIFE#WPBF Tube 50 LT3952AFE 1 28 -40°C ~ 125°C 28-Lead Plastic TSSOP  
LT3952AIFE#WTRPBF Reel 2500 LT3952AFE 1 28 -40°C ~ 125°C 28-Lead Plastic TSSOP  
LT3952AIFE#WTRMPBF Reel 500 LT3952AFE 1 28 -40°C ~ 125°C 28-Lead Plastic TSSOP  
LT3952AHFE#WPBF Tube 50 LT3952AFE 1 28 -40°C ~ 150°C 28-Lead Plastic TSSOP  
LT3952AHFE#WTRPBF Reel 2000 LT3952AFE 1 28 -40°C ~ 150°C 28-Lead Plastic TSSOP  
LT3952AHFE#WTRMPBF Reel 500 LT3952AFE 1 28 -40°C ~ 150°C 28-Lead Plastic TSSOP  
SPQ:Standard Pack Quantity;MSL:Moisture Sensitivity Level

LT3952A Datasheet(PDF)

LT3952A Datasheet(Picture)

LT3952A Features

  • 4000:1 True Color PWM Dimming
  • 4A, 60V Internal DMOS Switch
  • Wide Input Voltage Range: 3V to 42V
  • 0V to 60V Output Current Regulation with Monitor
  • PMOS Switch Driver for PWM and Output Disconnect
  • LED Short-Circuit Protection and SHORTLED Flag
  • Internal Spread Spectrum Frequency Modulation
  • Constant-Current and Constant-Voltage Regulation 
  • Input Current Limit and Monitor
  • Adjustable Frequency: 200kHz to 3MHz, Synchronizable to an External Clock
  • 10:1 Analog Dimming
  • Programmable Open-LED Protection with OPENLED Flag
  • Programmable VIN Undervoltage and Overvoltage Lockout
  • Available in a 28-Lead TSSOP Package
  • AEC-Q100 Qualified for Automotive Applications

LT3952A Applications

  • Display Backlighting
  • Automotive and Avionic Lighting
  • Accurate Current-Limited Voltage Regulators

LT3952A Description

The LT3952A is a current mode step-up DC/DC converter with an internal, 60V, 80mΩ DMOS power switch. The LT3952A is specifically designed to drive high power LEDs in multiple configurations. It combines input and output current regulation loops with output voltage regulation to operate as a flexible current/voltage source.

Programmable switching frequency with optional spread-spectrum modulation provides EMI reduction, while still allowing optimization of the external components for efficiency or component size. The LED current is programmable with an external sense resistor, and can be adjusted from zero to full scale with a voltage at the CTRL pin. The external PWM input provides LED ON/OFF control and 4000:1 dimming ratio, and an internal PWM generator delivers the efficiency of PWM dimming to standalone or I/O limited applications. The LT3952A is available in the thermally enhanced 28-lead TSSOP package.

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