STMPS2161MTR

Overview

The STMPS2161MTR is an enhanced single-channel power distribution switch from STMicroelectronics, designed for applications involving heavy capacitive loads and short-circuits. It incorporates a high-side N-channel MOSFET with a typical on-resistance of 90 mΩ. The device operates within a supply voltage range of 2.7 V to 5.5 V and supports continuous output currents up to 1 A. It features integrated thermal protection, short-circuit protection with overcurrent logic output, undervoltage lockout (UVLO), and reverse current protection. The component is housed in an SO-8 package and is rated for industrial grade operation across an ambient temperature range of -40 °C to 85 °C.

Feature Summary

• Integrates a high-side N-channel MOSFET switch with low on-resistance for efficient power distribution.
• Provides comprehensive protection including thermal shutdown, short-circuit limiting, and reverse current blocking.
• Features automatic recovery from thermal faults and fault blanking capabilities.
• Includes an overcurrent logic output pin to signal fault conditions to the system controller.

Applications

• Power distribution systems requiring protection against heavy capacitive loads
• Industrial control circuits subject to potential short-circuit events
• High-side switching applications with CMOS or TTL compatible logic inputs

Procurement Notes

Verify that the specific orderable part number matches the required suffix for tape and reel packaging. Confirm the operating temperature range aligns with the industrial specification limits. Ensure the SO-8 package dimensions are compatible with the intended PCB footprint. Cross-reference the datasheet revision date to confirm the accuracy of electrical characteristics before finalizing procurement specifications.

Selection Notes

Select this component when a single-channel high-side switch with robust fault protection is required. It is suitable for designs needing automatic thermal recovery and logic-level enable control. Consider the 1 A current capability and 90 mΩ resistance for efficiency calculations. Verify compatibility with the system's supply voltage range and logic input levels prior to integration into the circuit design.

Part Context

This device belongs to the STMPS21xx series of enhanced single-channel power switches. The series includes variants such as the STMPS2141, STMPS2151, and STMPS2171, which share similar architectural features but may differ in current ratings or package options. These components are engineered for reliable power management in industrial environments where load stability and fault resilience are critical operational requirements.

Replacement Considerations

Direct substitutes within the same family include STMPS2141, STMPS2151, and STMPS2171. Verify that alternative part numbers match the required current rating and package type. Ensure that any replacement maintains compatibility with the existing logic interface and protection thresholds defined in the original design specifications.