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LTC4211

Features: · Allows Safe Board Insertion and Removal from a Live Backplane· Controls Supply Voltages from 2.5V to 16.5V· Programmable Soft-Start with Inrush Current Limiting, No External Gate Capacitor Required· Faster Turn-Off Time Because No External Gate Capacitor is Required· Dual Level Overcur...

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SeekIC No. : 004402474 Detail

LTC4211: Features: · Allows Safe Board Insertion and Removal from a Live Backplane· Controls Supply Voltages from 2.5V to 16.5V· Programmable Soft-Start with Inrush Current Limiting, No External Gate Capacit...

LTC4211 Data Sheet

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Part Number:
LTC4211
Supply Ability:
5000

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

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Product Details

Description



Features:

· Allows Safe Board Insertion and Removal from a Live Backplane
· Controls Supply Voltages from 2.5V to 16.5V
· Programmable Soft-Start with Inrush Current Limiting, No External Gate Capacitor Required
· Faster Turn-Off Time Because No External Gate Capacitor is Required
· Dual Level Overcurrent Fault Protection
· Programmable Response Time for Overcurrent Protection (MS)
· Programmable Overvoltage Protection (MS)
· Automatic Retry or Latched Mode Operation (MS)
· High Side Drive for an External N-Channel FET
· User-Programmable Supply Voltage Power-Up Rate
· FB Pin Monitors VOUT and Signals RESET
· Glitch Filter Protects Against Spurious RESET Signal


Application

·Electronic Circuit Breaker
·Hot Board Insertion and Removal (Either On Backplane or On Removable Card)
·Industrial High Side Switch/Circuit Breaker


Pinout

Connection Diagram


Specifications

Supply Voltage (VCC) ......................................... 17V
Input Voltage
FB, ON ................................................ 0.3V to 17V
SENSE, FILTER ....................... 0.3V to VCC + 0.3V
TIMER ....................................................0.3V to 2V
Output Voltage
GATE ............................... Internally Limited (Note 3)
RESET, FAULT ..................................... 0.3V to 17V
Operating Temperature Range
LTC4211C ......................................... 0°C to 70°C
LTC4211I...................................... 40°C to 85°C
Storage Temperature Range ..... 65°C to 150°C
Lead Temperature (Soldering, 10 sec)......... 300°C


Description

The LTC®4211 is a Hot SwapTM controller that allows a board to be safely inserted and removed from a live backplane. An internal high side switch driver controls the gate of an external N-channel MOSFET for supply voltages ranging from 2.5V to 16.5V. The LTC4211 provides softstart and inrush current limiting during the start-up period which has a programmable duration.

Two on-chip current limit comparators of LTC4211 provide dual level overcurrent circuit breaker protection. The slow comparator trips at VCC 50mV and activates in 20ms (or programmed by an external filter capacitor, MS only). The fast comparator trips at VCC 150mV and typically responds in 300ns.

The FB pin of LTC4211 monitors the output supply voltage and signals the RESET output pin. The ON pin signal turns the chip on and off and can also be used for the reset function. The MS package has FAULT and FILTER pins to provide additional functions like fault indication, autoretry or latch-off modes, programmable current limit response time and programmable overvoltage protection using an external Zener diode clamp.




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