STMicroelectronics STMPS2252MTR

Overview

STMPS2252MTR from STMicroelectronics is a dual-channel high-side power distribution switch featuring two independent 100 mΩ MOSFETs, 500 mA continuous current per channel, active-high enable logic, and integrated thermal/overcurrent protection. It operates from 2.7 V to 5.5 V and delivers fault reporting via open-drain OC1/OC2 outputs - used in USB port power management and hot-swap subsystems for industrial I/O modules.

For engineers reviewing the STMPS2252MTR datasheet, STMPS2252MTR pinout, STMPS2252MTR application, or STMPS2252MTR equivalent, key selection criteria include enable polarity (active-high), per-channel current limit (500 mA), R_DS(on) (115 mΩ typ. at 5 V), thermal shutdown threshold (135 °C), and SO-8 package compatibility with board-level space constraints.

Technical Context

The STMPS2252MTR integrates two independent high-side switches with dedicated EN1/EN2 inputs and OC1/OC2 fault-reporting outputs. Each channel implements constant-current limiting during overloads and automatic thermal shutdown at 135 °C with 10 °C hysteresis.

Fault blanking is fixed at 10 ms (typ.) to suppress false triggers during capacitive load turn-on transients; UVLO activates below 2.0–2.5 V to prevent erratic switching; reverse current blocking is enforced when the switch is off or unpowered, but not during forward conduction with VO > VI.

Key Specifications

Pinout & Package

STMPS2252MTR uses an SO-8 surface-mount package (8-pin small outline integrated circuit) with standard 1.27 mm pitch, 5.0 mm × 4.0 mm body, and exposed pad for 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 TPL92012RGER and TPS22965DRLR, STMPS2252MTR uniquely combines per-channel active-high enable, 10 ms fault blanking, open-drain OC reporting, and autonomous thermal shutdown - making it optimal for space-constrained, safety-critical dual-rail applications where diagnostics and robustness are non-negotiable.

Availability

STMPS2252MTR is available at Aetrix Electronics and suitable for USB power distribution, industrial I/O protection, embedded power sequencing, and point-of-load backup rail control requiring stable component supply across production lifecycles.

Supply support for STMPS2252MTR 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, designing and manufacturing analog, mixed-signal, power, and microcontroller solutions for industrial, automotive, and consumer markets.

The STMPS series targets robust power distribution in harsh environments - engineered specifically for hot-swap-capable, fault-tolerant, and space-constrained applications where discrete FET-based solutions introduce layout complexity and reliability risk.

FAQ

What is the maximum allowable output capacitance for reliable turn-on without false fault triggering?

The STMPS2252MTR supports up to 470 µF output capacitance with guaranteed immunity to false OC assertion during turn-on, thanks to its 10 ms fault blanking window. This is validated per Figure 5 and Figure 25 in the datasheet under 3 V and 5 V input conditions with 6 Ω and 10 Ω load resistances respectively.

Does the device provide reverse current protection when the output voltage exceeds the input voltage while the switch is ON?

No - reverse current blocking is only guaranteed when the switch is OFF or unpowered (IN = 0 V). If the switch is ON and VO > VI, reverse current flows freely through the body diode of the internal MOSFET. External Schottky diodes are required for bidirectional blocking in such configurations.

Can EN1 and EN2 be tied together for simultaneous control of both channels?

Yes - EN1 and EN2 may be connected to a common GPIO, enabling synchronized switching of both channels. However, doing so forfeits independent fault reporting: OC1 and OC2 remain separate, but simultaneous enable disables per-channel isolation during fault events.

What is the minimum input voltage required to maintain stable operation after initial turn-on?

The undervoltage lockout (UVLO) releases at 2.0–2.5 V (typ.) with 75 mV hysteresis. Once enabled, the device sustains operation down to 2.0 V input; below that, it forces both channels OFF to prevent undefined behavior - confirmed in Table 9 and Figure 15–16 of the datasheet.