LT4256-1
LT4256-2

PRODUCTION

Positive High Voltage Hot Swap Controllers

Part Models
8
1ku List Price
Starting From $2.34
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Part Details

  • Allows Safe Board Insertion and Removal from a Live Backplane
  • Controls Supply Voltage from 10.8V to 80V
  • Foldback Current Limiting
  • Overcurrent Fault Detection
  • Drives an External N-Channel MOSFET
  • Programmable Supply Voltage Power-Up Rate
  • Undervoltage Protection
  • Latch Off Operation Mode (LT4256-1)
  • Automatic Retry (LT4256-2)
  • Available in an 8-Pin SO Package
LT4256-1
LT4256-2
Positive High Voltage Hot Swap Controllers
48V, 2A Hot Swap Controller Product Package 1
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Documentation

Data Sheet

This is the most up-to-date revision of the Data Sheet.

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Hardware Ecosystem

Parts Product Life Cycle Description
High Voltage Hot Swap Controllers 1
LTC4260 RECOMMENDED FOR NEW DESIGNS Positive High Voltage Hot Swap Controller with I2C Compatible Monitoring
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Tools & Simulations

LTspice

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.


Evaluation Kits

eval board
DC1354B

LT1641-1, LT1641-2, LT4256-1, and LT4256-2 Positive High Voltage Hot Swap Controller

Product Details

Demonstration circuit 1354B is a positive high voltage hot swap controller featuring either the LT®1641-1, LT1641-2, LT4256-1, or LT4256-2.

The board facilitates measurement of transient conditions, steady state operation with different loads, and fault conditions. The Controller responds to fault conditions such as input undervoltage(UV), output power good (PWRGD) fault, and overcurrent and response can be verified by the output voltage (VOUT) LED state and PWRGD pin signal. The LT1641-1 and LT4256-1 latch off if MOSFET shuts off under overcurrent condition, while LT1641-2 and LT4256-2 automatically restart after time-out delay.

The DC1354B contains one hot swap controller, power MOSFET, current sense resistor, enable circuit, input voltage clamp, gate protection circuit, resistive output voltage divider for feedback signal, and three LEDs to indicate the presence of input and output voltages and power good condition.

eval board
DC1354A-A

LT4256-1 Positive High Voltage Hot Swap Controllers with Latch-off (-1)

Product Details

DC1354A-A: Demo Board for the LT4256-1 Positive High Voltage Hot Swap Controllers


 


eval board
DC1354A-B

LT4256-2 Positive High Voltage Hot Swap Controllers with Auto-Retry(-2)

Product Details

DC1354A-B: Demo Board for the LT4256-2 Positive High Voltage Hot Swap Controllers


 


DC1354B
LT1641-1, LT1641-2, LT4256-1, and LT4256-2 Positive High Voltage Hot Swap Controller
DC1354B-B Evaluation Board DC1354B-B Evaluation Board - Top View DC1354B-B Evaluation Board - Bottom View DC1354
DC1354A-A
LT4256-1 Positive High Voltage Hot Swap Controllers with Latch-off (-1)
DC1354A-A - Schematic
DC1354A-B
LT4256-2 Positive High Voltage Hot Swap Controllers with Auto-Retry(-2)
DC1354A-B Demo Board DC1354A-B Demo Board DC1354A-B Demo Board DC1354A-B Demo Board DC1354A-A - Schematic

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