LTC4249
RECOMMENDED FOR NEW DESIGNS65V Dual Electronic Circuit Breaker with Current Monitors
- Part Models
- 4
- 1ku List Price
- Starting From $3.24
Overview
- 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
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
Documentation
Data Sheet 1
User Guide 1
Product Selector Card 2
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| LTC4249AV-1#PBF | 39-lead LFCSP (39-Lead LFCSP (6 mm x 9 mm x 0.85 mm w/ EP) | ||
| LTC4249AV-2#PBF | 39-lead LFCSP (39-Lead LFCSP (6 mm x 9 mm x 0.85 mm w/ EP) | ||
| LTC4249AV2-1#PBF | 20-Terminal LGA (3mm x 4mm x 0.95mm) | ||
| LTC4249AV2-2#PBF | 20-Terminal LGA (3mm x 4mm x 0.95mm) |
This is the most up-to-date revision of the Data Sheet.
Software Resources
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LTspice
Models for the following parts are available in LTspice:
- LTC4249
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
LTC4249 | 65V Dual Electronic Circuit Breaker with Current Monitors