LTC4213IDDB#TRMPBF

Specialized ICS Overview

The LTC4213IDDB#TRMPBF is a No RSENSE Electronic Circuit Breaker designed for high-side switching applications. It eliminates the need for external sense resistors by sensing voltage across an external N-channel MOSFET's drain and source terminals. The device operates with a bias supply voltage (VCC) ranging from 2.3V to 6V. It features dual-level overcurrent protection with selectable trip thresholds of 25mV, 50mV, or 100mV via the ISEL pin. Response times include a fast fault detection in 1µs and a slow fault detection in 16µs. The component is housed in an 8-lead DFN package measuring 3mm x 2mm.

Specialized ICS Feature Summary

• No RSENSE™ technology: Eliminates external sense resistors to reduce cost and switch path losses.
• Dual-level protection: Fast comparator trips in 1µs; slow comparator trips in 16µs.
• Selectable thresholds: Three circuit breaker trip levels (25mV, 50mV, 100mV) configurable via ISEL pin.
• Control interface: ON pin manages startup, shutdown, and fault reset; READY pin signals when the circuit breaker is armed.

Specialized ICS Applications

• Hot board insertion systems requiring controlled power-up sequencing.
• High-side electronic circuit breakers for load protection.
• Power distribution units needing precise current limiting without sense resistor voltage drops.

Specialized ICS Procurement Notes

Verify the specific suffix #TRMPBF corresponds to the Tape & Reel packaging format as indicated in local product fields. Confirm the industrial temperature grade (-40°C to 85°C) matches system requirements. Ensure the 8-WFDFN Exposed Pad footprint aligns with PCB layout guidelines provided in the datasheet.

Specialized ICS Selection Notes

Select an external N-channel MOSFET with a VGS rating capable of withstanding the LTC4213's maximum gate drive voltage (up to 8V). Calculate the current limit based on the MOSFET's RDS(ON) at the nominal operating VGS determined by the VCC supply voltage. Ensure the load supply can handle inrush currents during startup before the circuit breaker arms.

Specialized ICS Part Context

This part belongs to the LTC4213 series of electronic circuit breakers. The 'I' designation indicates an industrial temperature range (-40°C to 85°C), while 'DDB' specifies the 8-lead plastic DFN package. The '#TRMPBF' suffix denotes tape and reel packaging with lead-free finish.

Specialized ICS Replacement Considerations

Direct replacements within the same family include the LTC4213CDDB (Commercial grade, 0°C to 70°C). Verify that any substitute maintains the 8-DFN package dimensions and electrical characteristics such as the 2.3V to 6V operating range.