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Texas Instruments TPS2031DG4
- Part No.:
- TPS2031DG4
- Manufacturer:
- Texas Instruments
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TPS2031DG4.pdf
- Description:
- IC PWR SWITCH N-CHAN 1:1 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,635
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Product details
Overview
TPS2031DG4 from Texas Instruments is a 50-mΩ N-channel MOSFET high-side power distribution switch with 0.9-A current-limit threshold, logic-level enable input, and integrated thermal/overcurrent protection. It operates from 2.7 V to 5.5 V input, delivers controlled 6.1-ms rise time, and supports hot-plug applications in USB peripheral power management and industrial I/O modules.
For engineers reviewing the TPS2031DG4 datasheet, TPS2031DG4 pinout, TPS2031DG4 application, or TPS2031DG4 equivalent, key selection criteria include its SOIC-8 package, active-high enable compatibility with 3-V/5-V logic, open-drain OC fault flag, undervoltage lockout (2 V threshold), and absence of drain-source back-gate diode for true unidirectional blocking.
Technical Context
The TPS2031DG4 integrates an internal charge pump that drives the N-channel MOSFET gate above the source voltage-enabling full enhancement down to 2.7 V input without external components. Its driver circuitry actively controls output rise/fall times (6.1 ms typical rise, 3.4 ms typical fall) to suppress inrush current and EMI during switching.
Overcurrent detection uses a sense FET-not a shunt resistor-minimizing series resistance impact while enabling precise 0.9-A short-circuit current limit at 25°C. Thermal shutdown activates at ~140°C junction temperature with ~20°C hysteresis, and UVLO disables the switch below ~2 V input to ensure safe power-up sequencing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Current Limit | 0.9 A typical at 25°C - sets maximum safe load current before entering constant-current mode |
| rDS(on) | 33 mΩ max at 5 V, 25°C - enables low conduction loss and minimal self-heating under full load |
| Rise Time | 6.1 ms typical - limits inrush dv/dt to protect downstream capacitors and reduce EMI |
| Supply Voltage Range | 2.7 V to 5.5 V - supports single-supply operation across 3.3-V and 5-V systems |
| Enable Input Logic | Active-high, TTL/CMOS compatible - requires no level-shifting when driven by microcontrollers or FPGAs |
| OC Output Type | Open-drain, active-low - allows wired-OR fault signaling and flexible pull-up voltage selection |
| UVLO Threshold | ~2 V - prevents erratic turn-on during brownout or hot-insertion ramp-up |
| ESD Rating | 2-kV HBM, 200-V MM - meets industrial handling requirements without additional protection |
Pinout & Package
TPS2031DG4 is housed in an 8-pin SOIC (D) package with standard 1.27-mm pitch and exposed pad not present. Pin functions are validated per TI SLVS190C datasheet.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pin 1) | Power ground reference | Return path for all internal circuits; must be low-impedance connection to system ground plane |
| IN (Pins 2, 3) | Input power supply | Dual parallel inputs reduce trace inductance and improve current sharing into high-side switch |
| EN (Pin 4) | Logic enable control | Active-high signal; <10 μA standby current when low ensures ultra-low off-state power draw |
| OC (Pin 5) | Overcurrent/thermal fault flag | Open-drain output pulled low during fault; requires external pull-up for system-level interrupt or LED indication |
| OUT (Pins 6, 7, 8) | Switched output power | Three parallel output pins minimize voltage drop and thermal stress under 0.9-A continuous load |
Key Features
| Feature | Design Value |
|---|---|
| No back-gate diode | Prevents reverse current flow from OUT to IN-essential for bidirectional isolation in redundant power rails |
| Charge-pump gate drive | Enables full N-MOSFET enhancement from 2.7 V input; eliminates need for external boost circuitry or P-MOSFET |
| Constant-current limiting | Maintains 0.9-A output during overload instead of hard shutdown-preserves system uptime during transient faults |
| Thermal cycling recovery | Auto-restarts after cooling ~20°C post-shutdown-avoids latching failure and enables self-clearing of intermittent overloads |
| UL recognition | UL File No. E169910-certifies compliance for end-equipment safety standards without additional system-level testing |
Applications
| USB Peripheral Power Switching | Industrial I/O Module Protection |
|---|---|
Use Scenario: Hot-plugging USB peripherals (e.g., printers, storage) into powered hubs or embedded hosts. IC Role / Device Role / Timing Role: High-side power switch controlling 5-V rail delivery with controlled 6.1-ms ramp to limit inrush. Use Value: Prevents bus voltage droop and host controller reset during plug-in; OC flag signals fault to host firmware for graceful error handling. |
Use Scenario: Protecting field-connected sensors or actuators on programmable logic controller (PLC) I/O cards. IC Role / Device Role / Timing Role: Fault-tolerant power switch with 0.9-A current limit and thermal shutdown for 24-V-to-5-V converted rails. Use Value: Survives shorted sensor wiring or moisture-induced leakage without damaging upstream DC/DC converter or MCU. |
| Embedded System Board-Level Power Sequencing | Hot-Swap Backplane Interface |
Use Scenario: Enabling/disabling auxiliary subsystems (e.g., camera, Wi-Fi module) in battery-powered edge devices. IC Role / Device Role / Timing Role: Logic-controlled power gate with <10 μA disable current and UVLO for reliable cold-start behavior. Use Value: Extends battery life via zero-quiescent-power disable state; UVLO prevents partial turn-on during weak battery conditions. |
Use Scenario: Inserting/removing line cards in telecom or datacom backplanes operating at 3.3 V or 5 V. IC Role / Device Role / Timing Role: Controlled power ramp generator with OC monitoring for fault isolation in distributed power architecture. Use Value: Eliminates arcing and contact bounce damage; OC signal triggers backplane manager to isolate faulty slot without system reboot. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-side power switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS2031DR | Same silicon die, tape-and-reel packaging (R suffix); identical electrical specs and SOIC-8 footprint | No functional difference-selected for automated SMT assembly vs. tube-based TPS2031DG4 | Choose TPS2031DR for volume production; TPS2031DG4 for prototyping or low-volume hand-soldering |
| TPS2051BDBVR | Lower 1.5-A current limit, 45-mΩ rDS(on), same SOIC-5 package (5-pin, no OC pin) | Lacks overcurrent flag output and dual IN/OUT pin configuration-reduced diagnostic capability and higher conduction loss | Select only if OC reporting is unnecessary and board space constraints favor smaller 5-pin SOIC |
Compared with TPS2031DG4, TPS2031DR offers identical performance in tape-and-reel format for manufacturing scalability, while TPS2051BDBVR trades fault visibility and thermal margin for compactness-making it suitable only where diagnostics and robustness are secondary to size.
Availability
TPS2031DG4 is available at Aetrix Electronics and suitable for USB peripheral power management, industrial I/O protection, and embedded board-level power sequencing requiring stable component supply and long-term industrial lifecycle support.
Supply support for TPS2031DG4 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
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and power management ICs with broad industrial, automotive, and communications portfolio coverage.
The TPS203x family was designed specifically for hot-plug and heavy-capacitive-load applications-delivering controlled power ramping, robust fault protection, and logic-compatible control in compact surface-mount packages.
FAQ
What is the maximum continuous output current rating for the TPS2031DG4?
The TPS2031DG4 has a typical short-circuit current limit of 0.9 A at 25°C, with a specified range of 0.66 A to 1.1 A across temperature and process variation. It sustains this current continuously in constant-current mode during overload-without latch-off-until thermal shutdown intervenes at ~140°C junction temperature. The TPS2031DG4 does not specify a separate "continuous" rating distinct from its current-limit threshold.
Does the TPS2031DG4 require external components for basic operation?
No, the TPS2031DG4 requires only two external 0.1-μF ceramic bypass capacitors-one between IN and GND, and one between OUT and GND-placed close to the device. Its internal charge pump eliminates need for external boost circuitry, and the logic-level EN input needs no level-shifting. Additional RC filtering on the OC pin is optional, used only to suppress false triggers from capacitive inrush.
How does the OC pin behave during overcurrent and thermal events?
The OC pin on the TPS2031DG4 is an open-drain output that pulls low during both overcurrent and overtemperature conditions. It remains asserted (low) until the fault condition is fully removed-i.e., load current drops below trip threshold *and* junction temperature falls sufficiently for thermal recovery. The OC signal is not pulsed or debounced internally; external filtering must be added if inrush-induced false trips occur.
Can the TPS2031DG4 be used with a 3.3-V supply?
Yes, the TPS2031DG4 operates across 2.7 V to 5.5 V input, making it fully compatible with 3.3-V systems. At 3.3 V and 25°C, its rDS(on) is typically 37 mΩ-still enabling efficient switching with <125 mW conduction loss at 0.9 A. The enable input remains TTL/CMOS compatible, and the charge pump maintains sufficient gate drive to sustain full enhancement.
Is the TPS2031DG4 pin-compatible with other TPS203x variants?
Yes, all TPS203x devices-including TPS2030DG4, TPS2031DG4, TPS2032DG4, TPS2033DG4, and TPS2034DG4-are pin-compatible in the SOIC-8 (D) and PDIP-8 (P) packages. They share identical pinout, package dimensions, and interface logic. Only the current-limit threshold differs: TPS2031DG4 is fixed at 0.9 A, while others range from 0.3 A to 3 A.
TPS2031DG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Discontinued at Digi-Key
- Switch Type:
- General Purpose
- Number of Outputs:
- 1
- Ratio - Input:Output:
- 1:1
- Output Configuration:
- High Side
- Output Type:
- N-Channel
- Interface:
- On/Off
- Voltage - Load:
- 2.7V ~ 5.5V
- Voltage - Supply (Vcc/Vdd):
- Not Required
- Current - Output (Max):
- 600mA
- Rds On (Typ):
- 33mOhm
- Input Type:
- Non-Inverting
- Features:
- Status Flag
- Fault Protection:
- Current Limiting (Fixed), Over Temperature, UVLO
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
TPS2031DG4 FAQ
1.How can I place an order for TPS2031DG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS2031DG4 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 TPS2031DG4 reliable?
The price and inventory of TPS2031DG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS2031DG4 is usually 5 days.
3.What payment methods are accepted for TPS2031DG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS2031DG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS2031DG4?
TPS2031DG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS2031DG4 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 TPS2031DG4?
For technical support, including TPS2031DG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS2031DG4 requirements.
6.How does Aetrix verify that TPS2031DG4 is sourced from the original manufacturer or authorized distributors?
All TPS2031DG4 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 TPS2031DG4 meets industry standards.
7.What is the process for return or replacement of TPS2031DG4?
All TPS2031DG4 units undergo pre-shipment inspection (PSI). If there is an issue with TPS2031DG4, 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 TPS2031DG4 part is unused and in its original packaging.
Return procedure for TPS2031DG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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