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LTC3901

Features: ·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 PackageApplicat...

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SeekIC No. : 004402399 Detail

LTC3901: Features: ·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· 15n...

LTC3901 Data Sheet

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Part Number:
LTC3901
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2024/11/23

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Product Details

Description



Features:

·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


Application

· 48V Input Isolated DC/DC Converters
· Isolated Telecom Power Supplies
· Distributed Power Step-Down Converters
· Industrial Control System Power Supplies
· Automotive and Heavy Equipment


Pinout

Connection Diagram


Specifications

Supply Voltage
    VCC, PVCC ............................................................... 12V
Input Voltage
    CSE, CSF, TIMER .................... 0.3V to (VCC + 0.3V)
    SYNC ......................................................... 12V to 12V
Input Current
    CSE+, CSF+ .......................................................... 15mA
Operating Temperature Range (Note 2) ......40 to 85
Storage Temperature Range .....................65 to 150
Lead Temperature (Soldering, 10 sec)................... 300°C


Description

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.

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, the chip senses the output inductor current through the drain-source resistance of the two MOSFETs, turning off the MOSFETs if the inductor current reverses. The LTC3901 also shuts off the drivers if the supply is low or if the synchronization sequence is incorrect.




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