Datasheet Linear Technology LTC3901 — Datenblatt

LTC3901
Secondary Side
Synchronous Driver for Push-Pull
and Full-Bridge Converters
U FEATURES DESCRIPTIO ■ The LTC®3901 is a secondary side synchronous rectifier
driver designed to be used in isolated push-pull and fullbridge converter power supplies. The chip drives two
external N-channel MOSFETs and accepts a transformergenerated bipolar input to maintain sychronization with
the primary side controller. ■
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■ N-Channel Synchronous MOSFET Driver
Programmable Timeout
Reverse Inductor Current Sense
Gate Drive Transformer Synchronization
Sequence Monitor
Wide VCC Supply Range: 4.5V to 11V
15ns Rise/Fall Times at VCC = 5V, CL = 4700pF
Undervoltage Lockout
Small 16-Lead SSOP Package The LTC3901 provides a full range of protection features
for the external MOSFETs. A programmable timeout function is included that disables both drivers when the synchronization signal is missing or incorrect. Additionally, …