LT3800 - High-Voltage Synchronous Current Mode Step-Down Controller

Protected by U.S. Patents, including 5481178, 6611131, 6304066, 6498466, 6580258.

Features
  • Wide 4V to 60V Input Voltage Range
  • Output Voltages up to 36V
  • Adaptive Nonoverlap Circuitry Prevents Switch Shoot-Through
  • Reverse Inductor Current Inhibit for Discontinuous Operation Improves Efficiency with Light Loads
  • Output Slew Rate Controlled Soft-Start with Auto-Reset
  • 100µA No Load Quiescent Current
  • Low 10µA Current Shutdown
  • 1% Regulation Accuracy
  • 200kHz Operating Frequency
  • Standard Gate N-Channel Power MOSFETs
  • Current Limit Unaffected by Duty Cycle
  • Reverse Overcurrent Protection
  • 16-Lead Thermally Enhanced TSSOP Package
Typical Application

Applications
  • 12V and 42V Automotive and Heavy Equipment
  • 48V Telecom Power Supplies
  • Avionics and Industrial Control Systems
  • Distributed Power Converters
Packaging
Order Information
Part NumberPackageTempPrice(1-99)Price (1k)*
LT3800EFE#PBFTSSOP-16E$3.69$3.10
LT3800EFE#TRPBFTSSOP-16E$3.20
LT3800IFE#PBFTSSOP-16I$5.64$3.95
LT3800IFE#TRPBFTSSOP-16I$4.07
Demo Boards
Part NumberDescriptionPrice
DC720ALT3800EFE Demo Board | Vin = 20V to 55V, Vout = 12V @ 6.25A$150.00
Datasheet
Design Note
Reliability Data
LT Journal
Press Release
LTspice
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R468 Reliability Data
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LT3800 Footprints and Symbols
LT3800 Demo Circuit - High-Voltage Synchronous Current Mode Step-Down Controller (20-55V to 12V @ 6.25A)