LTC4249
Info : RECOMMENDED FOR NEW DESIGNS
searchIcon
cartIcon

LTC4249

65V Dual Electronic Circuit Breaker with Current Monitors

Show More showmore-icon

Info : RECOMMENDED FOR NEW DESIGNS tooltip
Info : RECOMMENDED FOR NEW DESIGNS tooltip
Part Details
Part Models 4
1ku List Price Starting From $2.56
Features
  • High Voltage Dual SPST, Current Sharing Allowed
  • 5% Accurate Analog Current Monitor Outputs
  • Adjustable Circuit Breaker Thresholds to 1.2A
  • Filtered (50μs) Primary OC Threshold
  • Fast (2μs) Secondary OC Threshold
  • 75mΩ Integrated Switches
  • Automatic Inrush Control
  • Short-Circuit Protection
  • Precision Enable Inputs
  • Open-Drain, Ready Status Outputs
  • 16-Lead 3mm × 3mm LQFN and 12-Lead (Skipped Lead) 3mm × 4mm LQFN
Additional Details
show more Icon

The LTC4249 dual electronic circuit breaker (ECB) provides independent overcurrent protection to a pair of loads. Each channel has a precision enable input, current monitor output and ready status output. A single resistor configures the ECB threshold. If either channel detects an overcurrent condition, the corresponding breaker disconnects the input from the load.

After a circuit breaker event, the open-drain RDY status output pulls low and the ECB latches off. Toggling the enable input turns the ECB back on after a 1 second cooloff period. An infinite retry option(–2) is also available. The cool-off timer, overtemperature sensor, short-circuit detector and inrush controller prevent operation outside the safe operating area of the circuit breakers.

Precision enable inputs, ready outputs and analog current monitor outputs permit voltage sequencing and closed loop bias current control applications. ECB channels may be paralleled as needed. Load isolation and reverse current detection applications are also possible.

APPLICATIONS

  • 5G mMIMO PA Array Protection
  • Industrial Safety
  • Condition Monitoring
  • Relay Replacement
  • Load Switching
Part Models 4
1ku List Price Starting From $2.56

close icon
Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
LTC4249AV-1#PBF
  • HTML
  • HTML
LTC4249AV-2#PBF
  • HTML
  • HTML
LTC4249AV2-1#PBF
  • HTML
  • HTML
LTC4249AV2-2#PBF
  • HTML
  • HTML
Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 1

reference details image

DC2733A

LTC4249 | 65V Dual Electronic Circuit Breaker with Current Monitors

zoom

DC2733A

LTC4249 | 65V Dual Electronic Circuit Breaker with Current Monitors

LTC4249 | 65V Dual Electronic Circuit Breaker with Current Monitors

Features and Benefits

  • Demonstrate dual LTC4249 circuit breaker channels
  • Monitor each channel current with IMON
  • Gang multiple parallel channels for larger currents
  • Convenient on-board pushbutton enable control

Product Detail

The DC2733 is a demonstration system for the LTC4249, 65V Dual Electronic Circuit Breaker with Current Monitors. The LTC4249 provides dual independent 1.2A, 75mΩ circuit breakers that can function independently or work together in parallel. Each circuit breaker channel has its own enable, ready, and IMON pins.

The DC2733 demo board gives access to both channels of the LTC4249, including the independent RDY and IMON outputs and the EN inputs. Resistors at the IMON pins set the circuit breaker thresholds as well as the IMON current-to-voltage gains. The IC draws power from the IN1 input.

Tools & Simulations

Tools & Simulations 1

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.

Recently Viewed