STMPS2161TTR

Overview

The STMPS2161TTR is an enhanced single-channel power distribution switch manufactured by STMicroelectronics. It incorporates a 90 mΩ N-channel MOSFET high-side power switch controlled by a logic enable input, designed for applications with heavy capacitive loads and short-circuits. The device operates within a voltage range of 2.7 V to 5.5 V and supports continuous output currents of up to 1 A. It features built-in protection against overcurrent, thermal overload, undervoltage, and reverse current.

Feature Summary

• Integrates a low-resistance 90 mΩ N-channel MOSFET for efficient high-side power switching.
• Provides automatic recovery from thermal shutdown once the junction temperature decreases sufficiently.
• Includes fault blanking functionality to prevent false triggering during startup or transient events.
• Features an overcurrent logic output that signals when the load exceeds the current limit threshold.

Applications

• Power distribution in systems prone to heavy capacitive loads
• Protection circuits for portable devices requiring short-circuit resilience
• High-side switching for peripheral drivers in consumer electronics

Procurement Notes

Verify the specific suffix 'TTR' corresponds to the tape-and-reel packaging configuration as defined in the official datasheet. Confirm the operating temperature range and package details match the required system specifications. Ensure compatibility with the intended logic levels for the enable input. Cross-reference the component marking with the manufacturer's identification guide to authenticate the source.

Selection Notes

Select this component when a single-channel high-side switch with robust short-circuit protection is required. It is suitable for designs needing automatic thermal recovery and precise current limiting. Consider the 90 mΩ on-resistance for efficiency calculations. Verify that the 2.7 V to 5.5 V supply range aligns with the system's power rails. Evaluate the need for the integrated fault output signal for system monitoring.

Part Context

The STMPS2161 belongs to the STMPS21xx series of MyST power switches. This family includes variants like the STMPS2141, STMPS2151, and STMPS2171, which share similar architectural features but may differ in current ratings or specific protection thresholds. These devices are engineered for reliable power management in compact electronic systems.

Replacement Considerations

Check for direct substitutes within the STMPS21xx series, such as the STMPS2151 or STMPS2171, ensuring pinout and electrical characteristics match. Verify if alternative manufacturers offer compatible single-channel power switches with similar 90 mΩ resistance and protection features. Confirm package compatibility for SOT-23-5 replacements.