TITPS2553DBVR
Overview
The TPS2553DBVR is an adjustable current-limited power-distribution switch designed for applications where precision current limiting or heavy capacitive loads are encountered. It provides a programmable current limit from 75mA to 1.7A via an external resistor, operating across an input voltage range of 2.5V to 6.5V. The device features integrated fault protection and a dedicated status flag to alert host controllers of overcurrent or thermal shutdown events.
Why Choose This Part
This switch offers high precision with a constant-current mode that allows the output to remain active during overcurrent events rather than shutting down immediately. The integrated soft-start and controlled slew rate minimize voltage droop on the input rail during hot-plugging. Its low 85mOhm Rds(on) ensures high efficiency and minimal voltage drop across the switch.
Applications
Key Specifications
Getting Started
To implement the TPS2553DBVR, calculate the required resistor value for the ILIM pin to set the desired current threshold between 75mA and 1.7A. Ensure a 0.1uF to 1uF ceramic bypass capacitor is placed close to the VIN pin for stability, and pull the FAULT pin high with a 10kOhm to 100kOhm resistor for status monitoring. Review the SOT-23-6 thermal pad requirements if operating near the maximum 1.5A continuous current limit.
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