STMicroelectronics STMPS2272MTR

Overview

STMPS2272MTR from STMicroelectronics is a dual-channel high-side power distribution switch featuring two 100 mΩ MOSFETs, 1000 mA continuous current per channel, active-high enable inputs, and independent overcurrent fault reporting via open-drain OC1/OC2 pins. It operates from 2.7 V to 5.5 V, includes thermal shutdown at 135 °C, and delivers reverse current blocking and 8 kV ESD protection - deployed in USB-powered peripherals, industrial I/O modules, and hot-swap-capable embedded power rails.

For engineers reviewing the STMPS2272MTR datasheet, STMPS2272MTR pinout, STMPS2272MTR application, or STMPS2272MTR equivalent, key selection criteria include per-channel current limit (1000 mA), enable polarity (active-high), R_DS(on) (115 mΩ typ. @ 5 V), fault blanking duration (10 ms), and SO-8 package compatibility with board-level thermal management requirements.

Technical Context

The device integrates two independent high-side switches with dedicated EN1/EN2 inputs and OC1/OC2 fault outputs, enabling discrete control and diagnostics for each channel. Each switch employs current-limiting during overload and transitions to constant-current mode before triggering thermal shutdown at 135 °C.

It features undervoltage lockout (2.5 V threshold), 10 ms fault blanking to suppress transient load surges, and reverse current blocking when disabled - ensuring safe operation during hot-plug events and supply sequencing mismatches in multi-rail systems.

Key Specifications

Pinout & Package

STMPS2272MTR is housed in an SO-8 surface-mount package (also known as SOIC-8), with standard 1.27 mm pitch, 5.0 mm × 4.0 mm body size, and exposed pad not present - suitable for reflow assembly and moderate-power thermal dissipation (θ_JA = 160 °C/W).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-channel high-side power switch applications.

Compared with STMPS2272MTR, TPL92012RGER trades channel count and diagnostics for higher single-rail current capacity, while TPS22965DRLR offers wider input range and higher current but omits critical safety features like thermal shutdown and programmable fault blanking - making STMPS2272MTR optimal for reliability-critical dual-rail systems.

Availability

STMPS2272MTR is available at Aetrix Electronics and suitable for USB peripheral designs, industrial I/O modules, embedded power sequencing, and telecom POL backup switching requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for STMPS2272MTR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, specializing in power management, microcontrollers, sensors, and automotive ICs - with over 45 years of analog and mixed-signal design heritage.

The STMPS series targets robust power distribution in harsh environments, emphasizing fault resilience, thermal safety, and hot-swap readiness for industrial, computing, and communications infrastructure.

FAQ

What is the maximum capacitive load the STMPS2272MTR can safely switch?

The device is characterized for reliable turn-on into 470 µF capacitive loads at 5 V with R_LOAD = 5 Ω, per Figure 25 of the datasheet. Its 10 ms fault blanking and 1000 mA current limit prevent false tripping during inrush, and thermal protection engages only if sustained overload exceeds junction temperature limits - making it suitable for USB, FPGA, and microcontroller power rails with bulk capacitance.

Does STMPS2272MTR support reverse current blocking when powered down?

Yes. When the IN supply is removed (V_IN = 0 V) or the switch is disabled, the output behaves as high-impedance, preventing reverse current flow from OUT to IN - confirmed in Section 3.3 "Reverse current blocking" and Table 7 leakage current specs (I_reverse ≤ 2 µA at 25 °C). This feature protects upstream supplies during system sleep or failure modes.

How does the 10 ms fault blanking interact with thermal shutdown?

Fault blanking applies only to overcurrent events - it delays OCx assertion for up to 10 ms if current exceeds the 1000 mA limit. Thermal shutdown and UVLO faults bypass blanking and assert OCx immediately upon detection, as stated in Section 3.1. This ensures rapid response to die overheating or supply collapse, while allowing benign inrush transients to settle.

Can EN1 and EN2 be tied together for synchronous dual-channel control?

Yes. The EN inputs are CMOS/TTL-compatible and electrically isolated, so connecting EN1 and EN2 to a common GPIO enables simultaneous channel activation. However, doing so forfeits per-channel fault isolation - OC1 and OC2 remain independent, but shared enable removes the ability to power one channel while holding the other off for diagnostic or sequencing purposes.