LT3571 - 75V DC/DC Converter for APD Bias

Features
  • High Output Voltage: Up to 75V
  • Integrated Schottky Diode
  • 75V, 350mA Internal Switch
  • High Side Fixed Voltage Drop APD Current Monitor
  • Adjustable Frequency: 250kHz to 2MHz
  • Frequency Synchronization
  • Wide VIN Range: 2.7V to 20V
  • Constant-Voltage and Constant-Current Regulation
  • Programmable Current Limit Protection
  • Surface Mount Components
  • Low Shutdown Current <1μA
  • Internal Soft-Start
  • Internal Compensation
  • CTRL Pin Allows Output Adjustment with No Polarity Inversion
  • 3mm × 3mm 16-Lead QFN Package
Typical Application

Applications
  • APD Bias
  • PIN Diode Bias
  • Optical Receivers and Modules
  • Fiber Optic Network Equipment
Packaging
Order Information
Part NumberPackageTempPrice(1-99)Price (1k)*
LT3571EUD#PBF3x3 QFN-16E$3.50$2.45
LT3571EUD#TRPBF3x3 QFN-16E$2.51
LT3571IUD#PBF3x3 QFN-16I$3.89$2.72
LT3571IUD#TRPBF3x3 QFN-16I$2.78
Demo Boards
Part NumberDescriptionPrice
DC1423ALT3571EUD Demo Board | 75V DC/DC Converter for APD Bias$125.00
Datasheet
Reliability Data
LT Journal
Press Release
LTspice
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LT3571 Footprints and Symbols
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