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STMicroelectronics STMPS2242MTR
- Part No.:
- STMPS2242MTR
- Manufacturer:
- STMicroelectronics
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
STMPS2242MTR.pdf
- Description:
- IC PWR SWITCH 1:2 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:4,716
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Product details
Overview
STMPS2242MTR from STMicroelectronics is a dual-channel high-side power distribution switch featuring two 100 mΩ MOSFETs, 500 mA continuous current per channel, independent active-low enable inputs, and open-drain overcurrent fault outputs. It operates from 2.7 V to 5.5 V, includes thermal shutdown at 135 °C, and delivers 2.5 ms typical rise time for controlled inrush management in USB-powered peripherals and embedded power rails.
For engineers reviewing the STMPS2242MTR datasheet, STMPS2242MTR pinout, STMPS2242MTR application, or STMPS2242MTR equivalent, key selection criteria include channel enable polarity (active-low), per-channel current limiting at 500 mA, fault-blanking timing (10 ms), reverse-current blocking behavior, and SO-8 package thermal resistance (160 °C/W).
Technical Context
The device integrates two independent high-side switches with dedicated EN1/EN2 inputs and OC1/OC2 open-drain fault indicators. Each channel employs current-limiting circuitry that transitions into constant-current mode during overload, with fault reporting delayed by a fixed 10 ms blanking window to suppress transient false triggers during hot-swap events.
Thermal protection activates at 135 °C junction temperature and recovers autonomously after cooling to 125 °C. Undervoltage lockout (UVLO) disables switching below 2.0–2.5 V input threshold with 75 mV hysteresis, while reverse-current blocking prevents backflow when the switch is off or unpowered.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| RDS(on) | 105–115 mΩ at 5 V, 25 °C - ensures ≤525 mW conduction loss at 500 mA full load |
| Continuous current | 500 mA per channel - supports USB 2.0-compliant downstream ports and low-power peripheral rails |
| Fault blanking | 10 ms - suppresses false OC assertions during capacitive load turn-on transients |
| UVLO threshold | 2.0–2.5 V - prevents erratic switching during brown-out conditions in battery-backed systems |
| Standby current | 13 µA max - enables ultra-low quiescent power in always-on system management circuits |
| Thermal shutdown | 135 °C with 10 °C hysteresis - provides robust self-protection under sustained short-circuit stress |
| ESD rating | 8 kV HBM - meets IEC 61000-4-2 Level 3 for board-level surge immunity |
Pinout & Package
STMPS2242MTR is housed in an SO-8 surface-mount package (4.9 mm × 6.0 mm, 1.25 mm height) with standard 1.27 mm pitch, rated for 160 °C/W junction-to-ambient thermal resistance and RoHS-compliant matte tin lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 GND | Power ground reference | Common return path for internal current sensing and thermal monitoring circuitry |
| 2 IN | Main power input | Supplies both channels; must be decoupled with ≥10 µF ceramic capacitor near pin |
| 3 EN1 | Channel 1 enable input | Active-low logic control; pulls low to activate CH1; compatible with 1.8 V/3.3 V/5 V CMOS/TTL |
| 4 EN2 | Channel 2 enable input | Active-low logic control; independent of EN1 for asynchronous channel sequencing |
| 5 OC2 | Channel 2 fault indicator | Open-drain output pulled low during overcurrent or thermal fault; requires external pull-up |
| 6 OUT2 | Channel 2 switched output | Drives load; reverse-current blocking active when EN2 = low or IN = 0 V |
| 7 OUT1 | Channel 1 switched output | Drives load; electrically isolated from OUT2; shares no internal current path |
| 8 OC1 | Channel 1 fault indicator | Open-drain output pulled low during overcurrent or thermal fault; independent of OC2 |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent high-side switches | Enables separate power control for two subsystems (e.g., USB port + sensor rail) without shared failure modes |
| 10 ms fault blanking | Eliminates false OC assertions during hot-plug of 470 µF capacitive loads, verified per Figure 5 |
| Reverse current blocking | Prevents backfeed from powered outputs into disabled or unpowered IN rail, critical for multi-rail isolation |
| Thermal shutdown with hysteresis | 135 °C trip / 125 °C recovery ensures stable cycling under intermittent overload without latch-up |
| Low standby supply current | 13 µA max allows integration into always-on supervisory circuits without measurable battery drain |
Applications
| USB Peripheral Power Switching | Industrial I/O Module Protection |
|---|---|
|
Use Scenario: Hot-swappable USB devices connected to embedded host controllers require inrush-limited, fault-isolated power delivery. IC Role / Device Role / Timing Role: Dual high-side switch manages VBUS distribution with independent enable/fault signaling per port. Use Value: 10 ms fault blanking tolerates 470 µF load capacitance turn-on (Fig. 5); 500 mA limit protects host controller from shorted peripherals. |
Use Scenario: Programmable logic controller (PLC) digital output modules need per-channel overcurrent protection and diagnostics. IC Role / Device Role / Timing Role: Provides isolated 500 mA power switching with OCx outputs feeding PLC status registers. Use Value: Open-drain OC1/OC2 outputs interface directly to 3.3 V microcontroller GPIOs; thermal shutdown prevents field failures during wiring faults. |
| Embedded System Power Sequencing | Point-of-Load (POL) Rail Enable |
|
Use Scenario: Multi-rail SoC-based systems require staggered power-up of core, I/O, and memory supplies to limit peak inrush. IC Role / Device Role / Timing Role: Enables precise timing-controlled activation of auxiliary rails using independent EN1/EN2 signals. Use Value: Active-low enables compatibility with standard reset supervisors; 2.5 ms rise time ensures clean voltage ramp without overshoot. |
Use Scenario: Low-voltage FPGA or ASIC core supplies demand reliable enable/disable with fault feedback for power management ICs. IC Role / Device Role / Timing Role: Acts as POL rail gate driver with OCx reporting to PMIC for automatic rail disable on fault. Use Value: RDS(on) ≤115 mΩ limits voltage drop to <57.5 mV at 500 mA, preserving tight core voltage tolerance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel high-side power switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPL92012RGER | Single-channel, 2.7–6.5 V, 2 A, integrated 100 ms fault timer | Lacks dual-channel independence and active-low enable; requires external logic for dual-rail use | Choose for higher current single-rail applications where programmable fault timing outweighs channel count |
| TPS2051BDR | Single-channel, 2.7–5.5 V, 500 mA, no fault blanking, no OC output | No fault reporting or blanking; requires external comparator for overcurrent detection | Choose only when cost sensitivity precludes diagnostic capability and dual-channel operation is unnecessary |
Compared with TPL92012RGER and TPS2051BDR, STMPS2242MTR uniquely delivers dual independent active-low enables, 10 ms blanking, and dedicated OCx outputs in one SO-8 package-enabling compact, self-diagnosing dual-rail designs without external components.
Availability
STMPS2242MTR is available at Aetrix Electronics and suitable for USB peripheral power switching, industrial I/O module protection, and embedded system power sequencing requiring stable component supply across automotive qualification cycles, industrial temperature ranges, and long-life production programs.
Supply support for STMPS2242MTR 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, MCU, power, and sensor solutions for industrial, automotive, and consumer markets.
STMPS2242MTR belongs to ST's enhanced power distribution switch family, engineered specifically for robust hot-swap operation in systems exposed to heavy capacitive loads and frequent short-circuit events.
FAQ
What is the enable polarity for STMPS2242MTR?
STMPS2242MTR uses active-low enable inputs (EN1 and EN2). Driving either pin low activates its respective channel; driving high disables it. This matches common reset supervisor outputs and simplifies interface with microcontrollers lacking open-drain GPIOs.
Does STMPS2242MTR support reverse-current blocking when powered down?
Yes. When IN = 0 V or ENx = high, the internal MOSFET body diode is reverse-biased, preventing current flow from OUTx back into the IN rail. This is confirmed in Section 3.3 and Table 7 (Ireverse ≤ 2 µA at 25 °C).
How does fault blanking interact with thermal shutdown?
Fault blanking applies only to overcurrent events-not thermal faults. If junction temperature exceeds 135 °C, OCx asserts immediately with no delay. The 10 ms blanking window exclusively filters transient current-limit conditions, as specified in Section 3.1.
Can STMPS2242MTR drive a 470 µF capacitive load safely?
Yes. Figure 5 confirms safe turn-on with 470 µF load at 3 V input, and the 10 ms fault blanking prevents false OC assertion during this event. Rise time remains within specification (≤2 ms), and thermal margin is maintained per SO-8 thermal resistance (160 °C/W).
STMPS2242MTR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Switch Type:
- General Purpose
- Number of Outputs:
- 2
- Ratio - Input:Output:
- 1:2
- Output Configuration:
- High Side
- Output Type:
- -
- Interface:
- On/Off
- Voltage - Load:
- 2.7V ~ 5.5V
- Voltage - Supply (Vcc/Vdd):
- Not Required
- Current - Output (Max):
- 500mA
- Rds On (Typ):
- 105mOhm
- Input Type:
- Non-Inverting
- Features:
- -
- Fault Protection:
- Current Limiting (Fixed), Over Temperature, Reverse Current, UVLO
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
STMPS2242MTR FAQ
1.How can I place an order for STMPS2242MTR through Aetrix?
Please submit a Request for Quotation (RFQ) for STMPS2242MTR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for STMPS2242MTR reliable?
The price and inventory of STMPS2242MTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STMPS2242MTR is usually 5 days.
3.What payment methods are accepted for STMPS2242MTR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STMPS2242MTR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STMPS2242MTR?
STMPS2242MTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STMPS2242MTR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for STMPS2242MTR?
For technical support, including STMPS2242MTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STMPS2242MTR requirements.
6.How does Aetrix verify that STMPS2242MTR is sourced from the original manufacturer or authorized distributors?
All STMPS2242MTR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that STMPS2242MTR meets industry standards.
7.What is the process for return or replacement of STMPS2242MTR?
All STMPS2242MTR units undergo pre-shipment inspection (PSI). If there is an issue with STMPS2242MTR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The STMPS2242MTR part is unused and in its original packaging.
Return procedure for STMPS2242MTR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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