My Inquiry
My Account
Texas Instruments TPS2051BDBVRG4
- Part No.:
- TPS2051BDBVRG4
- Manufacturer:
- Texas Instruments
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TPS2051BDBVRG4.pdf
- Description:
- IC PWR SWITCH N-CHAN 1:1 SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,388
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TPS2051BDBVRG4 from Texas Instruments is a single-channel, current-limited power-distribution switch featuring a 70mΩ high-side N-channel MOSFET, 500mA continuous output current, thermal and short-circuit protection, and operation from 2.7V to 5.5V. It serves as a smart load switch in USB-powered peripherals and embedded systems requiring controlled inrush current and fault-safe power gating.
For engineers reviewing the TPS2051BDBVRG4 datasheet, TPS2051BDBVRG4 pinout, TPS2051BDBVRG4 application, or TPS2051BDBVRG4 equivalent, key selection criteria include its accurate 0.75A–1.25A current-limit threshold, 0.6ms typical rise time, undervoltage lockout (2.0–2.6V), deglitched OC fault reporting, and ultra-low 1μA standby supply current - all critical for battery-sensitive and safety-compliant designs.
Technical Context
The TPS2051BDBVRG4 integrates an internal charge pump to drive the high-side MOSFET gate, enabling full enhancement down to 2.7V input while controlling rise/fall times to suppress inrush surges. Its constant-current limiting activates when load current exceeds the programmed 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 10°C hysteresis. Internal UVLO ensures the switch remains off until valid input voltage is present, and the device complies with UL Recognition File E169910 for end-equipment safety certification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Continuous Output Current | 500 mA - supports sustained loads like USB peripherals, sensors, or small actuators without derating at 25°C ambient. |
| rDS(on) | 70 mΩ (typ) at 5V - minimizes conduction loss (≤17.5 mW at 500 mA), reducing thermal stress and PCB footprint requirements. |
| Current Limit Range | 0.75 A min / 1.25 A max - provides precise overcurrent protection across temperature and process variation, eliminating need for external current-sense resistors. |
| Input Voltage Range | 2.7 V to 5.5 V - compatible with single-cell Li-ion (3.0–4.2V), USB 5V, and 3.3V logic rails without level-shifting. |
| Rise Time | 0.6 ms (typ) - controls inrush dv/dt to limit peak surge current into heavy capacitive loads (e.g., 100 µF downstream capacitance). |
| Standby Supply Current | 1 µA - enables multi-year battery life in always-on IoT nodes or low-power sleep modes. |
| Operating Temperature | –40°C to +85°C - qualified for industrial and automotive cabin-temperature applications. |
Pinout & Package
SOT-23 (5-pin) package: 2.90 mm × 1.60 mm body, 0.95 mm height, gull-wing leads, RoHS-compliant, moisture sensitivity level 1 (MSL-1).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN | Power Input | Connects to 2.7–5.5V supply rail; feeds internal charge pump and high-side switch. |
| OUT | Switched Power Output | Delivers current-limited, slew-controlled power to load; no external flyback diode required. |
| EN | Enable Input | Active-high logic control (VIH ≥ 2 V); enables/disables output with no external pull-up needed. |
| OC | Open-Drain Fault Report | Active-low overcurrent indicator; deglitched to avoid false triggers during startup or transient events. |
| GND | Ground Reference | Common return path for input, output, and internal circuitry; must be low-impedance for thermal and noise performance. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Charge Pump | Enables full MOSFET enhancement from 2.7V input, eliminating external gate-drive components and simplifying layout. |
| Accurate Current Limit | Guaranteed 0.75–1.25A trip range ensures predictable fault behavior without calibration or trimming. |
| No OC Glitch During Power-Up | Internal deglitching prevents spurious fault asserts when EN transitions, avoiding system-level false alarms or resets. |
| UL Recognition (E169910) | Validates safety compliance for end equipment in commercial and industrial applications without additional certification effort. |
| Thermal Shutdown Recovery | Automatic restart after cooling to 125°C eliminates manual reset requirement and improves system resilience. |
Applications
| USB Peripheral Power Switching | Industrial Sensor Node Protection |
|---|---|
Use Scenario: Powering USB HID devices (keyboards, mice) or bus-powered hubs where hot-plug inrush must be controlled. IC Role / Device Role: High-side load switch with current limiting and fault reporting for safe, standards-compliant USB port power management. Use Value: Prevents host port overcurrent shutdown by limiting inrush to ≤1.25A and providing clean OC signaling for firmware-based fault handling. | Use Scenario: Isolating 3.3V sensor subsystems (e.g., pressure, humidity) in programmable logic controllers with field wiring exposure. IC Role / Device Role: Protected power rail switch that withstands accidental shorts and capacitive transients on long cables. Use Value: Eliminates need for fuses or discrete MOSFET+controller solutions, reducing BOM count and improving MTBF via integrated thermal/short-circuit protection. |
| Portable Medical Device Subsystem Enable | Low-Power IoT Edge Node Load Control |
Use Scenario: Enabling/disabling diagnostic modules (ECG front-end, LED indicators) in battery-operated handheld instruments. IC Role / Device Role: Ultra-low-quiescent-load switch ensuring <1µA shutdown current to extend battery runtime between charges. Use Value: Enables deep-sleep modes with guaranteed zero-load leakage, meeting IEC 62304 Class B power budget constraints. | Use Scenario: Controlling power to LoRaWAN or BLE radio modules in solar-charged environmental monitors. IC Role / Device Role: Single-channel distribution switch with fast turn-on (≤1ms) and robust UVLO to prevent brownout-induced MCU resets. Use Value: Ensures reliable radio activation only when input voltage exceeds 2.6V, avoiding corrupted transmissions during weak solar charging. |
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 and pinout; active-low enable (vs. TPS2051BDBVRG4's active-high enable); identical rDS(on), current limit, and protection features. | Requires inverted logic control signal; suitable where system GPIO is low-active or pull-down dominant. | Select TPS2041BDBVR only if existing firmware/hardware uses active-low enable; otherwise TPS2051BDBVRG4 simplifies interface design. |
| AP2171WG-7 | 500mA rated, 120mΩ rDS(on), 2.7–5.5V operation, but lacks UL recognition and has slower 2ms rise time; no deglitched OC output. | Not certified for safety-critical end equipment; less robust against fast transients and inrush surges. | Use AP2171WG-7 only in cost-sensitive, non-certified consumer applications where UL compliance and precise timing are not required. |
Compared with TPS2041BDBVR and AP2171WG-7, the TPS2051BDBVRG4 delivers superior system reliability through UL recognition, active-high logic compatibility, faster rise time, and guaranteed deglitched fault reporting - making it the preferred choice for industrial, medical, and USB-compliant designs.
Availability
TPS2051BDBVRG4 is available at Aetrix Electronics and suitable for USB peripheral power management, industrial sensor node protection, and portable medical device subsystem enable requiring stable component supply and long-term lifecycle support.
Supply support for TPS2051BDBVRG4 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 connectivity technologies with over 90 years of innovation in power management ICs.
The TPS20xxB family was designed specifically for robust, low-risk power distribution in USB, industrial, and portable electronics - emphasizing integrated protection, ease of use, and regulatory compliance without external components.
FAQ
What is the enable logic polarity of the TPS2051BDBVRG4?
The TPS2051BDBVRG4 features active-high enable logic: the output switches ON when the EN pin voltage exceeds 2.0 V (minimum), and OFF when EN falls below 0.8 V (maximum). This eliminates the need for external inverters or pull-down resistors in microcontroller-driven systems with standard GPIO high-active outputs, simplifying schematic design and firmware control flow for the TPS2051BDBVRG4.
Does the TPS2051BDBVRG4 require external components for basic operation?
No, the TPS2051BDBVRG4 operates autonomously with no external components required for core functionality. Its internal charge pump drives the high-side MOSFET gate, and integrated UVLO, current limiting, thermal shutdown, and deglitched OC reporting eliminate the need for external sense resistors, timers, or protection ICs - enabling a minimal 5-pin SOT-23 solution for the TPS2051BDBVRG4.
What is the maximum capacitive load the TPS2051BDBVRG4 can safely charge?
The TPS2051BDBVRG4 is characterized for stable operation with up to 100 µF output capacitance under typical conditions (5.5V input, 10 Ω load), achieving a controlled 0.6 ms rise time. While larger capacitances may be used, inrush current must remain within the 0.75–1.25A current-limit window; for >100 µF loads, verify peak current using CL × dV/dt and confirm thermal limits per RθJA = 208.6°C/W in the DBV package for the TPS2051BDBVRG4.
Is the TPS2051BDBVRG4 UL-recognized, and what does that mean for my design?
Yes, the TPS2051BDBVRG4 carries UL Recognition under File E169910, confirming its construction and performance meet UL 60950-1/62368-1 requirements for end-equipment safety. This allows direct use in certified products without retesting the switch itself, accelerating time-to-market and reducing qualification costs for your final TPS2051BDBVRG4-based design.
How does the TPS2051BDBVRG4 handle short-circuit faults?
Upon detecting an output short, the TPS2051BDBVRG4 immediately enters constant-current mode, limiting output current to 0.75–1.25A. If power dissipation causes junction temperature to reach 135°C, thermal shutdown disables the switch. Once cooled to 125°C, it auto-restarts - all without external intervention. The OC pin asserts low (deglitched) to signal the fault, enabling firmware response for the TPS2051BDBVRG4.
TPS2051BDBVRG4 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
TPS2051BDBVRG4 FAQ
1.How can I place an order for TPS2051BDBVRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS2051BDBVRG4 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 TPS2051BDBVRG4 reliable?
The price and inventory of TPS2051BDBVRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS2051BDBVRG4 is usually 5 days.
3.What payment methods are accepted for TPS2051BDBVRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS2051BDBVRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS2051BDBVRG4?
TPS2051BDBVRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS2051BDBVRG4 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 TPS2051BDBVRG4?
For technical support, including TPS2051BDBVRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS2051BDBVRG4 requirements.
6.How does Aetrix verify that TPS2051BDBVRG4 is sourced from the original manufacturer or authorized distributors?
All TPS2051BDBVRG4 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 TPS2051BDBVRG4 meets industry standards.
7.What is the process for return or replacement of TPS2051BDBVRG4?
All TPS2051BDBVRG4 units undergo pre-shipment inspection (PSI). If there is an issue with TPS2051BDBVRG4, 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 TPS2051BDBVRG4 part is unused and in its original packaging.
Return procedure for TPS2051BDBVRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPS2051BDBVRG4 Tags
-
TPS22919DCKR
Texas Instruments
-
MIC2091-1YM5-TR
Microchip Technology
-
MIC2090-1YM5-TR
Microchip Technology
-
TPS22995RZFR
Texas Instruments
-
TPS22975DSGR
Texas Instruments
-
SIP32510DT-T1-GE3
Vishay Siliconix
-
ULN2003D1013TR
STMicroelectronics
-
MIC2005A-1YM5-TR
Microchip Technology
-
MIC2005A-1YM6-TR
Microchip Technology
-
TPS22916BYFPR
Texas Instruments
-
TPS22917DBVR
Texas Instruments
-
ULN2003APWR
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
