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LTC4352

Features: ` Low Loss Replacement for Power Diode` Controls N-Channel MOSFET` 0V to 18V Supply ORing or Holdup` 0.5s Turn-On and Turn-Off Time` Undervoltage and Overvoltage Protection` Open MOSFET Detect` Status and Fault Outputs` Hot Swappable` Reverse Current Enable Input` 12-Pin MSOP and DFN (3m...

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SeekIC No. : 004402570 Detail

LTC4352: Features: ` Low Loss Replacement for Power Diode` Controls N-Channel MOSFET` 0V to 18V Supply ORing or Holdup` 0.5s Turn-On and Turn-Off Time` Undervoltage and Overvoltage Protection` Open MOSFET De...

LTC4352 Data Sheet

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Part Number:
LTC4352
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: 2024/10/27

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Product Details

Description



Features:

` Low Loss Replacement for Power Diode
` Controls N-Channel MOSFET
` 0V to 18V Supply ORing or Holdup
` 0.5s Turn-On and Turn-Off Time
` Undervoltage and Overvoltage Protection
` Open MOSFET Detect
` Status and Fault Outputs
` Hot Swappable
` Reverse Current Enable Input
` 12-Pin MSOP and DFN (3mm * 3mm) Packages


Application

· Redundant Power Supplies
· Supply Holdup
· Telecom Infrastructure
· Computer Systems and Servers


Pinout

Connection Diagram


Specifications

VIN, SOURCE Voltages ......................... 0.3V to 24V
VCC Voltage ........................................... 0.3V to 7V
OUT Voltage ............................................ 2V to 24V
CPO, GATE Voltages (Note 3) ............... 0.3V to 30V
CPO D.C. Current ..............................................10mA
UV, OV, REV Voltages............................ 0.3V to 24V
FAULT, STATUS Voltages ...................... 0.3V to 24V
FAULT, STATUS Currents.......................................5mA
Operating Ambient Temperature Range
LTC4352C ................................................. 0 to 70
LTC4352I.............................................. 40 to 85
Storage Temperature Range ..............65 to 150
Lead Temperature (Soldering, 10 sec)
MS Package ...................................................... 300


Description

The LTC®4352 creates a near-ideal diode using an external N-channel MOSFET. It replaces a high power Schottky diode and the associated heat sink, saving power and board area. The ideal diode function permits low loss power ORing and supply holdup applications.

The LTC4352 regulates the forward voltage drop across the MOSFET to ensure smooth current transfer in diode-OR applications. A fast turn-on reduces the load voltage droop during supply switch-over. If the input supply fails or is shorted, a fast turn-off minimizes reverse currents.

The controller of LTC4352 operates with supplies from 2.9V to 18V. For lower voltages, an external supply is needed at the VCC pin. Power passage is disabled during undervoltage or overvoltage conditions. The controller also features an open MOSFET detect circuit that fl ags excessive voltage drop across the pass transistor in the on state. A REV pin enables reverse current, overriding the diode behavior when desired.




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