STMicroelectronics STMPS2161MTR Power Switch IC | 8-SOIC N-Channel 1:1 Ratio

STMicroelectronics STMPS2161MTR: Precision Power Management for Modern Electronics

In today's power-sensitive applications, engineers require robust solutions that combine efficiency with comprehensive protection features. The STMicroelectronics STMPS2161MTR power switch IC emerges as a critical component for systems demanding precise control and safeguarding of power delivery circuits. This high-side N-channel switch delivers exceptional performance in a compact 8-SOIC package, making it ideal for space-constrained designs across industrial, automotive, and consumer electronics sectors.

Engineered to handle 1A maximum output current with a remarkably low 110mΩ R_DS(on), the STMPS2161MTR minimizes power loss while maintaining operational efficiency across its 2.7V to 5.5V operating range. Unlike conventional power switches requiring separate control circuitry, this IC integrates essential protection mechanisms within its architecture. The built-in current limiting, over-temperature protection, reverse current blocking, and undervoltage lockout (UVLO) features create a comprehensive power management solution that prevents system failures and extends component longevity.

What sets the STMPS2161MTR apart in STMicroelectronics' portfolio is its innovative non-inverting input configuration combined with a 1:1 input/output ratio. This design simplifies control signal interfacing while ensuring precise power delivery matching. The surface-mount 8-SOIC package (3.90mm width) enables seamless integration into modern PCB layouts, particularly in portable devices where space optimization is critical. The device's operating temperature range of -40°C to 125°C ensures reliable performance in demanding environments, from automotive systems to industrial control panels.

Key Technical Specifications

For designers seeking to optimize power system reliability, the STMPS2161MTR's integrated protection schemes eliminate the need for external safety components. The current limiting function automatically regulates load current to prevent overcurrent conditions, while thermal shutdown safeguards against excessive junction temperatures. Reverse current protection prevents backflow during power-down sequences or fault conditions, maintaining system integrity.

This power switch excels in applications requiring intelligent power distribution, such as USB power management, battery-powered systems, and industrial sensors. Its wide voltage range accommodates various power sources including lithium-ion batteries, USB PD supplies, and standard DC rails. The non-inverting control interface simplifies PWM signal integration for dynamic power regulation in motor control, LED lighting, and peripheral power sequencing applications.

Manufactured by STMicroelectronics, a leader in semiconductor innovation, the STMPS2161MTR combines proven reliability with advanced power management features. The device's active status in production ensures long-term availability for ongoing projects, while its RoHS-compliant packaging meets modern environmental standards. When paired with appropriate heat sinking through PCB copper traces, the SOIC package maintains thermal stability even under continuous load conditions.

For engineers developing next-generation power systems, the STMPS2161MTR represents a balanced solution between performance, protection, and package efficiency. Its feature set addresses common power management challenges while maintaining design simplicity, making it a valuable component for systems requiring robust yet intelligent power distribution capabilities.

Tags: Power Management IC, N-Channel Switch, High-Side Switch, Overcurrent Protection, Voltage Regulator IC