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LTC3900 - Synchronous Rectifier Driver

General Description

The LTC®3900 is a secondary-side synchronous rectifier driver designed to be used in isolated forward converter power supplies.

The chip drives N-channel rectifier MOSFETs and accepts pulse sychronization from the primary-side controller via a pulse transformer.

Key Features

  • n N-Channel Synchronous Rectifier MOSFET Driver n Programmable Timeout Protection n Reverse Inductor Current Protection n Pulse Transformer Synchronization n Wide VCC Supply Range: 4.5V to 11V n 15ns Rise/Fall Times at VCC = 5V, CL = 4700pF n Undervoltage Lockout n Small SO-8 Package.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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LTC3900 Synchronous Rectifier Driver for Forward Converters Features n N-Channel Synchronous Rectifier MOSFET Driver n Programmable Timeout Protection n Reverse Inductor Current Protection n Pulse Transformer Synchronization n Wide VCC Supply Range: 4.5V to 11V n 15ns Rise/Fall Times at VCC = 5V, CL = 4700pF n Undervoltage Lockout n Small SO-8 Package Applications n 48V Input Isolated DC/DC Converters n Isolated Telecom Power Supplies n High Voltage Distributed Power Step-Down Converters n Industrial Control System Power Supplies n Automotive and Heavy Equipment Description The LTC®3900 is a secondary-side synchronous rectifier driver designed to be used in isolated forward converter power supplies.