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Texas Instruments TPS2051BDBVTG4
- Part No.:
- TPS2051BDBVTG4
- Manufacturer:
- Texas Instruments
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TPS2051BDBVTG4.pdf
- Description:
- IC PWR SWITCH N-CHAN 1:1 SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,580
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Product details
Overview
TPS2051BDBVTG4 from Texas Instruments is a single-channel, 500mA current-limited power-distribution switch with 70mΩ high-side N-channel MOSFET, operating from 2.7V to 5.5V input, featuring thermal/short-circuit protection and deglitched OC fault reporting. It serves as a robust load switch in USB-powered peripherals and embedded power rails where inrush control and fault resilience are critical.
For engineers reviewing the TPS2051BDBVTG4 datasheet, TPS2051BDBVTG4 pinout, TPS2051BDBVTG4 application, or TPS2051BDBVTG4 equivalent, key selection factors include its SOT-23-5 package footprint, 1μA standby current, 0.6ms typical rise time, accurate 0.75–1.25A current-limit range, and active-high enable logic - all validated for 500mA continuous operation under –40°C to 85°C ambient conditions.
Technical Context
The TPS2051BDBVTG4 integrates an internal charge pump to drive the high-side MOSFET gate, enabling full enhancement down to 2.7V supply while controlling rise/fall times to suppress inrush surges. Its constant-current limiting activates when load exceeds threshold, pulling the open-drain OC pin low without glitching during power-up.
Thermal shutdown engages at 135°C junction temperature and recovers automatically at 125°C, with undervoltage lockout (UVLO) asserting below 2.0–2.6V input and 75mV hysteresis. The device remains disabled until valid input voltage is established, ensuring controlled power sequencing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Continuous Current | 500 mA - supports sustained load delivery without derating in standard PCB layouts with adequate copper area |
| rDS(on) | 70 mΩ (typ, 5V) - enables <150 mW conduction loss at 500 mA, reducing thermal stress in compact designs |
| Input Voltage Range | 2.7 V to 5.5 V - compatible with single-cell Li-ion, USB 2.0/3.0, and 3.3V/5V system rails |
| Current Limit Threshold | 0.75 A min / 1.25 A max - provides predictable fault containment across temperature and process variation |
| Rise Time | 0.6 ms (typ) - limits inrush di/dt to protect upstream sources and downstream capacitors |
| Standby Supply Current | 1 μA - enables ultra-low-power sleep states in battery-backed systems |
| Ambient Temperature | –40°C to +85°C - qualified for industrial and extended-temperature embedded applications |
Pinout & Package
SOT-23-5 package (2.90 mm × 1.60 mm), thermally enhanced with PowerPAD™ internally connected to GND for board-level heat sinking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN | Power Input | High-voltage rail entry point; connects to 2.7–5.5V source with local 0.1 µF decoupling |
| OUT | Switched Output | Drives load directly; requires output capacitance matching inrush and stability requirements |
| EN | Enable Input | Active-high logic control (VIH ≥ 2 V); asserts switch only when IN is valid and UVLO is cleared |
| OC | Open-Drain Fault Output | Active-low overcurrent indicator; requires external pull-up for microcontroller interrupt or status monitoring |
| GND | Ground Reference | Common return path; must be tied to PowerPAD™ and system ground plane for thermal and noise integrity |
Key Features
| Feature | Design Value |
|---|---|
| 70mΩ High-Side MOSFET | Minimizes conduction loss and self-heating at 500mA, eliminating need for external heatsinking in most layouts |
| Accurate Current Limit (0.75–1.25A) | Enables deterministic fault response without external sensing, simplifying BOM and layout |
| Deglitched OC Output | Prevents false fault interrupts during transient overload or power-up, improving system reliability |
| Charge Pump Gate Drive | Allows full MOSFET enhancement from 2.7V input, removing dependency on external boost circuitry |
| UL Recognition (E169910) | Meets safety certification requirements for end-equipment without additional isolation components |
Applications
| USB Peripheral Power Switching | Industrial Sensor Node Power Management |
|---|---|
Use Scenario: Hot-plug USB devices (e.g., HID keyboards, serial adapters) drawing up to 500mA from host ports. IC Role / Device Role / Timing Role: High-side load switch enforcing inrush control and short-circuit isolation between host VBUS and peripheral circuitry. Use Value: Prevents host port shutdown during capacitor charging or cable faults, maintaining system-level USB compliance. | Use Scenario: Remote sensor nodes powered by 3.3V or 5V rails with intermittent wake/sleep cycles. IC Role / Device Role / Timing Role: Controlled power gating of analog front-end, MCU peripherals, or RF transceivers during deep-sleep states. Use Value: Achieves sub-µA system standby by cutting leakage paths, while enabling fast, sequenced wake-up via EN pin. |
| Embedded Board-Level Power Sequencing | Medical Diagnostic Module Protection |
Use Scenario: Multi-rail embedded boards requiring independent enable timing for FPGA I/O banks or memory interfaces. IC Role / Device Role / Timing Role: Single-channel distribution switch providing isolated, timed power delivery with fault feedback. Use Value: Eliminates discrete FET + driver complexity while delivering precise 0.6ms rise time for controlled voltage ramping. | Use Scenario: Portable diagnostic modules (e.g., pulse oximeters, ECG front-ends) powered from rechargeable batteries. IC Role / Device Role / Timing Role: Protected power path between battery management IC and sensitive analog signal chain. Use Value: Thermal and short-circuit protection prevents hazardous overheating during connector misinsertion or PCB trace damage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar power-distribution switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS2041BDBVR | Same SOT-23-5 package, but active-low enable logic and 75–150mΩ rDS(on) at 2.7V; no UL recognition | Requires inverted control signal; higher conduction loss at low VIN reduces efficiency in 2.7–3.3V systems | Choose only if legacy design uses active-low enable and UL certification is not required |
| AP2171SG-13 | 500mA limit, 120mΩ rDS(on), active-high enable, but lacks deglitched OC and thermal shutdown | No automatic recovery from thermal events; OC output susceptible to noise-induced false triggers | Select when cost sensitivity outweighs fault robustness and safety certification needs |
Compared with TPS2041BDBVR and AP2171SG-13, the TPS2051BDBVTG4 delivers superior fault resilience through deglitched OC reporting, guaranteed thermal shutdown with hysteresis, and UL recognition - making it the preferred choice for safety-critical or high-reliability power-gating applications.
Availability
TPS2051BDBVTG4 is available at Aetrix Electronics and suitable for USB peripheral power switching, industrial sensor node power management, and embedded board-level power sequencing requiring stable component supply, long-term lifecycle support, and certified reliability.
Supply support for TPS2051BDBVTG4 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 technologies.
The TPS20xxB family is designed for robust, current-limited power distribution in systems exposed to heavy capacitive loads and short circuits - targeting USB, industrial, and portable electronics where protection and simplicity are paramount.
FAQ
What is the maximum continuous output current rating for the TPS2051BDBVTG4?
The TPS2051BDBVTG4 is rated for 500 mA continuous output current across its full operating temperature range (–40°C to +85°C). This rating is validated under recommended conditions including proper PCB thermal relief and input voltage between 2.7 V and 5.5 V. Exceeding this current may trigger current-limit mode or thermal shutdown depending on duration and ambient conditions.
Does the TPS2051BDBVTG4 require an external pull-up resistor on the OC pin?
Yes, the TPS2051BDBVTG4 OC pin is an open-drain output and requires an external pull-up resistor (typically 4.7 kΩ to 10 kΩ) to a logic-compatible voltage (e.g., 3.3 V or 5 V) to generate a valid high-level signal when no fault is present. Without this resistor, the OC pin cannot assert a logic-high state, preventing reliable fault detection by microcontrollers or monitoring circuitry.
How does the TPS2051BDBVTG4 handle inrush current during power-up?
The TPS2051BDBVTG4 controls inrush current via its internal charge pump and gate-drive circuitry, which limits the output rise time to 0.6 ms (typical) under 5.5 V input and 1 µF load. This controlled slew rate suppresses peak di/dt, protecting upstream sources and downstream bulk capacitors. No external soft-start components are needed.
Is the TPS2051BDBVTG4 UL-recognized, and what is its file number?
Yes, the TPS2051BDBVTG4 is UL Recognized under file number E169910. This certification confirms compliance with UL 60950-1 and UL 62368-1 for information technology and audio/video equipment, supporting end-product safety approvals without additional isolation or protection components.
What is the function of the PowerPAD™ on the TPS2051BDBVTG4 package?
The PowerPAD™ on the TPS2051BDBVTG4 is an exposed thermal pad on the underside of the SOT-23-5 package, internally connected to GND. It must be soldered to a dedicated GND copper pour on the PCB to provide low-thermal-resistance heat transfer (RθJB = 39.1°C/W). Proper connection improves power dissipation capability and maintains junction temperature within safe limits during 500 mA operation.
TPS2051BDBVTG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- SC-74A, SOT-753
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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):
- 500mA
- Rds On (Typ):
- 95mOhm
- Input Type:
- Non-Inverting
- Features:
- -
- Fault Protection:
- Current Limiting (Fixed), Over Temperature, UVLO
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
TPS2051BDBVTG4 FAQ
1.How can I place an order for TPS2051BDBVTG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS2051BDBVTG4 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 TPS2051BDBVTG4 reliable?
The price and inventory of TPS2051BDBVTG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS2051BDBVTG4 is usually 5 days.
3.What payment methods are accepted for TPS2051BDBVTG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS2051BDBVTG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS2051BDBVTG4?
TPS2051BDBVTG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS2051BDBVTG4 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 TPS2051BDBVTG4?
For technical support, including TPS2051BDBVTG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS2051BDBVTG4 requirements.
6.How does Aetrix verify that TPS2051BDBVTG4 is sourced from the original manufacturer or authorized distributors?
All TPS2051BDBVTG4 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 TPS2051BDBVTG4 meets industry standards.
7.What is the process for return or replacement of TPS2051BDBVTG4?
All TPS2051BDBVTG4 units undergo pre-shipment inspection (PSI). If there is an issue with TPS2051BDBVTG4, 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 TPS2051BDBVTG4 part is unused and in its original packaging.
Return procedure for TPS2051BDBVTG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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