LTC4284

RECOMMENDED FOR NEW DESIGNS

High Power Negative Voltage Hot Swap Controller with Energy Monitor

Data Sheet (Rev. B) Product Selection Table
Part Models
6
1ku List Price
Starting From $7.44
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Part Details

  • Drives Two Gates for High Power Applications
  • Configurable Parallel, Staged Start or Single Modes
  • Protects MOSFET with SOA Timer
  • Programmable 15mV to 30mV Current Limit Sense Voltage with <3.3% Accuracy and Adjustable Foldback
  • 8-Bit to 16-Bit Gear-Shift ADC with 0.7% Accuracy
  • Monitors Voltages, Currents, Power and Energy
  • Nonvolatile Configuration and Fault Recording
  • Floating Topology for Rugged High Voltage Operation
  • Selectable Inrush Control: dV/dt or Current Limit
  • I2C/SMBus or Single-Wire Broadcast Interfaces
  • Min/Max ADC Measurement Logging with Alerts
  • Reboots on I2C Command with Programmable Delay
  • Adjustable Input UV/OV Thresholds and Hysteresis
  • 44-Pin 5mm × 8mm QFN Package
LTC4284
High Power Negative Voltage Hot Swap Controller with Energy Monitor
LTC4284 Application Circuit LTC4284 Performance Graph LTC4284 Pin Configuration
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Documentation

Data Sheet 1

User Guide 1

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Tools & Simulations

LTspice 1

Models for the following parts are available in LTspice:

  • LTC4284

Design Tool 1

LTpowerPlay®

LTpowerPlay® is a powerful, Windows-based development environment supporting Linear Technology's Digital Power System Management (PSM) products.

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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
schematic 1
schematic 2
schematic 3
schematic 4
DC2470A

Demo Board for LTC4284 | High Power Negative Voltage Hot Swap Controller with I2C Energy Monitor and EEPROM

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Product Details

Demonstration circuit 2470A showcases the LTC4284 high power, negative Hot Swap controller with I2C energy monitor and EEPROM in a 2.5kW, −48V application. DC2470A is configured for low stress staged start, which offers the lowest cost hot plug solution for high power systems.

Included on the board is isolation for power good control pins to enable downstream power converters. LEDs indicate the presence of −48V input and output as well as the state of both supply feeds and power good signaling. High voltage layout rules are followed throughout for best long term product reliability.

Headers are provided for all three LTC evaluation interfaces, providing instant access to voltage, current and power measurements, fault logging, and board temperature.

eval board
schematic 5
schematic 6
schematic 7
schematic 8
DC2909A

LTC4284 Demo Board | –48V, 1500W Hot Swap Controller with Telemetry and EEPROM

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Product Details

DC2909A showcases the LTC4284 high power, negative hot swap controller with telemetry and EEPROM in a –48V, 31A (1500W) application. DC2909A is configured for parallel mode, which offers reliable low cost hot plug solution for high power systems where input steps are imminent.

Included on board is isolation for power good control pins, to enable downstream power converters. LEDs indicate the presence of –48V input and output as well as the state of both supply feeds and power good signaling. High voltage layout rules are followed throughout for best long-term product reliability.

Headers are provided for three I2C interfaces, providing instant access to voltage, current, power, energy, fault log, and board temperature data.
DC2470A
Demo Board for LTC4284 | High Power Negative Voltage Hot Swap Controller with I2C Energy Monitor and EEPROM
DC2470A Evaluation Board DC2470A Evaluation Board - Top View DC2470A Evaluation Board - Bottom View DC2470A Application Circuit
DC2909A
LTC4284 Demo Board | –48V, 1500W Hot Swap Controller with Telemetry and EEPROM
DC2909A Evaluation Board DC2909A Evaluation Board - Top View DC2909A Evaluation Board - Bottom View DC2909A

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