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Texas Instruments TPS2012ADR
- Part No.:
- TPS2012ADR
- Manufacturer:
- Texas Instruments
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TPS2012ADR.pdf
- Description:
- IC PWR SWITCH N-CHAN 1:1 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,990
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Product details
Overview
TPS2012ADR from Texas Instruments is a 1.5-A rated, 50-mΩ N-channel high-side power distribution switch in an 8-pin SOIC package, featuring thermal and short-circuit protection, undervoltage lockout, and logic-level enable input compatible with 3-V/5-V systems. It delivers controlled 6.1-ms rise time to limit inrush current in USB-powered peripherals and hot-plug modules.
For engineers reviewing the TPS2012ADR datasheet, TPS2012ADR pinout, TPS2012ADR application, or TPS2012ADR equivalent, this device is selected for robust overcurrent handling in 2.7–5.5-V systems where load capacitance, transient surges, and fault recovery behavior are critical design considerations.
Technical Context
The TPS2012ADR 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 while eliminating external components. Its current-limit threshold is fixed at 1.5 A (typical) at 25°C, with automatic transition into constant-current mode during overload.
Thermal shutdown activates at ~140°C junction temperature with ~20°C hysteresis, enabling auto-recovery after cooling. Undervoltage lockout disables the switch below ~2 V input, ensuring safe power-up sequencing and hot-insertion reliability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Continuous Output Current | 1.5 A maximum - sets safe steady-state load capacity without thermal derating at TA ≤70°C |
| On-Resistance (rDS(on)) | 33 mΩ at 5 V, 25°C - determines conduction loss (e.g., 75 mW at 1.5 A), critical for thermal design |
| Rise Time (tr) | 6.1 ms typical - limits inrush di/dt and EMI during power-up of capacitive loads |
| Input Voltage Range | 2.7 V to 5.5 V - supports single-supply operation across USB, 3.3-V, and 5-V rail systems |
| Enable Input Logic | Active-low, TTL/CMOS-compatible - allows direct interface with microcontrollers and FPGA I/O without level shifting |
| Standby Supply Current | 10 μA max - enables ultra-low-power system standby states without compromising switch readiness |
| Short-Circuit Current Limit | 1.5 A typical at 25°C - defines peak fault current during output-to-ground shorts, limiting energy dissipation |
Pinout & Package
TPS2012ADR is housed in an 8-pin SOIC (D) package with standard 1.27-mm pitch, JEDEC MS-012AC compliant, suitable for automated assembly and industrial temperature operation (–40°C to 85°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN (Pin 4) | Logic Enable Input | Active-low control: drives internal bias circuits; logic high disables switch and reduces supply current to ≤10 μA |
| GND (Pin 1) | Power Ground Reference | Return path for internal charge pump, current sense, and thermal sensing; must be low-impedance connection |
| IN (Pins 2,3) | Power Input | High-side switch source node; accepts 2.7–5.5 V; requires local 0.01–0.1-μF ceramic bypass capacitor |
| OUT (Pins 5–8) | Switched Power Output | Drain node of N-channel MOSFET; supplies load; connects to downstream capacitance and ESD protection |
Key Features
| Feature | Design Value |
|---|---|
| No back-gate diode | Prevents reverse current flow from OUT to IN - essential for bidirectional isolation in shared-bus or redundant power systems |
| Charge-pump gate drive | Enables full MOSFET enhancement from 2.7 V input - eliminates need for external boost circuitry or higher-voltage rails |
| Controlled rise/fall times | 6.1-ms rise / 3.4-ms fall (typ.) - suppresses EMI and voltage overshoot during hot-plug events and bulk-capacitor charging |
| Thermal shutdown with hysteresis | Trips at ~140°C, recovers after ~20°C cooldown - provides self-protecting fault cycling without latch-up or manual reset |
| 2-kV HBM ESD rating | Meets IEC 61000-4-2 Level 2 - supports handling and board-level integration without additional ESD protection on EN/IN pins |
Applications
| USB Peripheral Power Switching | Hot-Plug Module Protection |
|---|---|
|
Use Scenario: Powering USB hubs, card readers, or external storage with large input capacitance (>100 μF) directly from 5-V bus. IC Role / Device Role / Timing Role: High-side current-limited switch controlling VBUS delivery; manages inrush via 6.1-ms soft-start. Use Value: Prevents host port overcurrent shutdown by limiting peak surge to ≤1.5 A and suppressing EMI during plug-in. |
Use Scenario: Inserting expansion cards or daughterboards into live backplanes (e.g., telecom line cards, industrial PLC I/O modules). IC Role / Device Role / Timing Role: Hot-swap controller providing controlled voltage ramp and fault containment at module input. Use Value: Eliminates system-level brownouts and protects upstream power supplies from transient surges during insertion. |
| Industrial Sensor Node Power Gating | Embedded System Load Management |
|
Use Scenario: Isolating 3.3-V sensor subsystems (e.g., analog front-ends, ADCs) during sleep or fault conditions. IC Role / Device Role / Timing Role: Low-quiescent-power (≤10 μA) enable-controlled power gate with fast turnoff (40 ms). Use Value: Reduces system standby power by cutting off leakage paths while maintaining rapid wake-up capability. |
Use Scenario: Sequencing power to multiple subcircuits (e.g., RF transceiver, memory, MCU core) in portable medical devices. IC Role / Device Role / Timing Role: Independent, logic-controlled power domain switch with undervoltage lockout and thermal margin. Use Value: Ensures reliable startup only when input rail is stable ≥2 V, preventing erratic behavior during battery sag or cold start. |
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 |
|---|---|---|---|
| TPS2012AD | Same electrical specs and SOIC-8 footprint, but supplied in tube (75 pcs) instead of tape-and-reel (2500 pcs) | No functional difference; suited for prototyping or low-volume builds where reel handling is unnecessary | Select TPS2012AD for evaluation or small-batch production; TPS2012ADR is optimized for SMT line efficiency |
| TPS2051BDR | 500-mA rated, 120-mΩ rDS(on), same SOIC-8 package; lacks thermal shutdown hysteresis and has slower rise time (12 ms) | Better suited for low-power, non-fault-tolerant loads (e.g., LED drivers); not recommended for hot-plug or high-capacitance applications | Choose TPS2051BDR only when lower current and cost are prioritized over robustness and EMI control |
Compared with TPS2012ADR, TPS2012AD offers identical performance in a different packaging format, while TPS2051BDR trades current capacity and protection features for cost reduction in less demanding applications.
Availability
TPS2012ADR is available at Aetrix Electronics and suitable for USB peripheral power switching, hot-plug module protection, and industrial sensor node power gating requiring stable component supply across automotive, industrial, and embedded OEM programs.
Supply support for TPS2012ADR 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 decades of expertise in high-reliability power-switching solutions.
The TPS201xA family was designed specifically for robust hot-plug and capacitive-load power distribution in computing, industrial, and communications equipment-emphasizing fault resilience, controlled turn-on, and wide-input-voltage operation.
FAQ
What is the short-circuit current limit of the TPS2012ADR?
The TPS2012ADR has a typical short-circuit output current limit of 1.5 A at 25°C, with variation across temperature and input voltage per the datasheet's Figure 28 and Table on page 5. This limit is set by internal current-sense FET architecture and remains active during sustained faults, forcing the device into constant-current mode to protect both itself and the load.
Does the TPS2012ADR require external components for gate drive?
No, the TPS2012ADR integrates a fully self-contained charge pump that generates the required gate-drive voltage above the source, enabling full enhancement of its internal N-channel MOSFET from inputs as low as 2.7 V. No external capacitors, resistors, or boost circuitry are needed for basic operation.
What is the maximum continuous output current rating for the TPS2012ADR?
The TPS2012ADR is rated for 1.5 A maximum continuous output current under recommended operating conditions (TA ≤70°C, with appropriate PCB copper area). At 85°C ambient, derating applies: power dissipation must stay within 377 mW (SOIC package), limiting practical current based on rDS(on) and thermal resistance.
How does the TPS2012ADR behave during thermal shutdown?
When the TPS2012ADR junction temperature reaches ~140°C, its thermal protection circuit disables the power switch. After cooling by ~20°C, it automatically resumes normal operation. This hysteresis prevents oscillation near trip point and enables fault-tolerant cycling until the overload condition is removed.
Is the TPS2012ADR pin-compatible with other devices in the TPS201xA family?
Yes, all TPS201xA variants-including TPS2010ADR, TPS2011ADR, TPS2012ADR, and TPS2013ADR-share identical 8-pin SOIC (D) package pinout and logic interface. Only the current-limit threshold differs between models; no PCB layout change is required when upgrading or substituting within the family.
TPS2012ADR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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):
- 1A
- Rds On (Typ):
- 33mOhm
- Input Type:
- Non-Inverting
- Features:
- -
- 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
TPS2012ADR FAQ
1.How can I place an order for TPS2012ADR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS2012ADR 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 TPS2012ADR reliable?
The price and inventory of TPS2012ADR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS2012ADR is usually 5 days.
3.What payment methods are accepted for TPS2012ADR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS2012ADR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS2012ADR?
TPS2012ADR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS2012ADR 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 TPS2012ADR?
For technical support, including TPS2012ADR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS2012ADR requirements.
6.How does Aetrix verify that TPS2012ADR is sourced from the original manufacturer or authorized distributors?
All TPS2012ADR 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 TPS2012ADR meets industry standards.
7.What is the process for return or replacement of TPS2012ADR?
All TPS2012ADR units undergo pre-shipment inspection (PSI). If there is an issue with TPS2012ADR, 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 TPS2012ADR part is unused and in its original packaging.
Return procedure for TPS2012ADR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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