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Texas Instruments TPS2065D
- Part No.:
- TPS2065D
- Manufacturer:
- Texas Instruments
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TPS2065D.pdf
- Description:
- IC PWR SWITCH N-CHAN 1:1 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:102
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Product details
Overview
TPS2065D from Texas Instruments is a single-channel, current-limited, high-side power-distribution switch featuring a 70 mΩ N-channel MOSFET, 1 A continuous output current, thermal and short-circuit protection, and operation from 2.7 V to 5.5 V input supply. It delivers controlled inrush current management for USB-powered peripherals and hot-swap applications requiring robust fault handling.
For engineers reviewing the TPS2065D datasheet, TPS2065D pinout, TPS2065D application, or TPS2065D equivalent, this page provides verified electrical specifications, DBV package terminal mapping, functional context for overcurrent response and soft-start behavior, and validated alternative options for load-switch design.
Technical Context
The TPS2065D integrates an internal charge pump enabling gate drive above the input rail - allowing full enhancement of its high-side N-channel MOSFET down to 2.7 V supply. Its current-limit circuit operates without external sensing resistors, using a matched sense FET to maintain 1.1 A–1.9 A trip range across temperature.
Enable logic is active-high (EN pin), and overcurrent reporting uses an open-drain OC pin with 4–15 ms deglitching. Thermal shutdown activates at 135°C with 10°C hysteresis and recovers automatically upon cooling to 125°C - independent of enable state.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Continuous Output Current | 1 A - supports sustained loads such as USB peripherals, SSDs, or FPGA I/O banks without derating at 25°C ambient. |
| rDS(on) | 70 mΩ (typ) - minimizes conduction loss (≤70 mW at 1 A), reducing thermal stress and enabling compact PCB layout. |
| Input Voltage Range | 2.7 V to 5.5 V - compatible with 3.3 V and 5 V systems, including battery-backed and USB-C PD sink designs. |
| Current Limit Threshold | 1.1 A min / 1.9 A max - tightly bounded trip window ensures predictable fault containment across process and temperature. |
| Rise Time (tr) | 0.6 ms typical - controls inrush dv/dt to limit peak surge current into large capacitive loads (e.g., 100 µF bus capacitance). |
| Standby Supply Current | 1 µA max - enables ultra-low-power system sleep states without compromising fast wake-up capability. |
| Operating Temperature | −40°C to +85°C ambient - validated for industrial and embedded computing environments with no derating. |
Pinout & Package
SOT-23-5 (DBV) package with exposed PowerPAD™ thermally connected to GND. Requires soldered thermal pad to PCB ground plane for rated 1 A operation and thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN | Power input | Connects to 2.7–5.5 V supply rail; feeds internal charge pump and power switch source. |
| OUT | Switched output | Drives load; voltage follows IN when enabled, floats high-impedance when disabled. |
| EN | Active-high enable | Logic high ≥2 V enables switch; logic low ≤0.8 V disables switch and reduces supply current to ≤1 µA. |
| OC | Open-drain overcurrent flag | Pulled low during current-limit or thermal fault; requires external pull-up for host monitoring. |
| GND | Ground reference | Return path for power, control, and thermal dissipation; must be connected to PowerPAD™ via PCB copper. |
Key Features
| Feature | Design Value |
|---|---|
| Built-in soft-start | Controlled 0.6 ms rise time limits inrush di/dt, eliminating need for external RC networks on high-capacitance loads. |
| Accurate current limit | 1.1–1.9 A trip range ensures consistent fault response across voltage, temperature, and unit-to-unit variation. |
| Thermal and short-circuit protection | Auto-recovery thermal shutdown (135°C/125°C) plus constant-current limiting prevents damage during sustained overload. |
| Undervoltage lockout (UVLO) | Activates below 2.0–2.6 V input to prevent erratic switching or incomplete MOSFET turn-on during brownout conditions. |
| No OC glitch at power-up | Debounced OC output avoids false fault assertions during startup transients - critical for reliable system boot sequencing. |
Applications
| USB Peripheral Power Switching | Hot-Swap Board Insertion |
|---|---|
Use Scenario: Enabling/disabling power to USB hubs, card readers, or external storage while system remains operational. IC Role / Device Role / Timing Role: High-side load switch controlling VBUS delivery with inrush limiting and fault isolation. Use Value: Prevents bus voltage droop and host port reset during plug-in; OC signal alerts host controller of short events. |
Use Scenario: Safely powering up backplane slots or mezzanine cards in telecom or industrial chassis. IC Role / Device Role / Timing Role: Controlled power ramp generator with current limiting and thermal margin. Use Value: Eliminates arcing and contact bounce damage; enables deterministic insertion timing via EN pin sequencing. |
| Industrial Sensor Node Power Gating | FPGA I/O Bank Sequencing |
Use Scenario: Cycling power to analog sensor front-ends or wireless transceivers to reduce system standby current. IC Role / Device Role / Timing Role: Low-quiescent current (≤1 µA) enable-controlled power gate with fast turn-on (3 ms). Use Value: Extends battery life in remote nodes; OC feedback confirms healthy load connection before firmware initialization. |
Use Scenario: Staggering power-up of FPGA I/O banks to meet total inrush budget and avoid core voltage collapse. IC Role / Device Role / Timing Role: Precision-controlled current-limited switch with 0.6 ms rise time and UVLO validation. Use Value: Ensures clean, monotonic VCCIO ramp per bank; eliminates cross-coupling noise between adjacent I/O sections. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-side load-switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS2051BDBV | Same DBV package, 1.5 A current limit (1.2–1.8 A), higher rDS(on) (100 mΩ typ), no OC pin. | Lacks fault reporting; suitable only where overcurrent detection is handled externally or not required. | Select when OC feedback is unnecessary and higher current headroom is acceptable with minor efficiency trade-off. |
| AP2171SG-13 | 5-pin SOT-23, 1.5 A limit (1.2–1.8 A), 90 mΩ rDS(on), active-high EN, OC pin present. | Wider input range (2.7–5.5 V), same footprint, but no integrated soft-start or UVLO hysteresis. | Choose when cost sensitivity outweighs need for precise inrush control and brownout immunity. |
Compared with TPS2065D, TPS2051BDBV omits overcurrent reporting and has higher conduction loss, while AP2171SG-13 matches pinout and adds OC but lacks UVLO hysteresis and soft-start tuning - making TPS2065D optimal for fault-aware, low-noise, and thermally constrained designs.
Availability
TPS2065D is available at Aetrix Electronics and suitable for USB peripheral power management, hot-swap board insertion, and FPGA I/O bank sequencing requiring stable component supply and long-term production continuity.
Supply support for TPS2065D 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 automotive- and industrial-grade reliability validation.
The TPS206x family was designed specifically for robust, single-channel power distribution in systems vulnerable to heavy capacitive loads and short circuits - emphasizing fault resilience, thermal autonomy, and ease of integration.
FAQ
What is the maximum continuous output current rating for the TPS2065D?
The TPS2065D is rated for 1 A continuous output current under recommended operating conditions (TA = −40°C to +85°C, VIN = 2.7 V to 5.5 V). This rating assumes proper PCB thermal design with the PowerPAD™ soldered to a minimum 1-in² copper area. Derating applies above 70°C ambient per thermal metrics in the datasheet.
Does the TPS2065D support bidirectional current flow?
No, the TPS2065D is a unidirectional high-side switch. Its N-channel MOSFET architecture blocks reverse current (OUT → IN) when disabled and does not support back-driving. The datasheet explicitly states "bidirectional switch" applies only to certain variants (e.g., TPS2061), not the TPS2065D.
How does the OC pin behave during normal operation and fault conditions?
The OC pin is an open-drain output that remains high-impedance (pulled up externally) during normal operation. It pulls low during overcurrent or thermal fault events and stays asserted until the fault clears and internal recovery completes. Deglitching filters transient spikes, requiring ≥4 ms fault duration for assertion.
What is the purpose of the PowerPAD™ on the TPS2065D DBV package?
The PowerPAD™ is an exposed thermal pad on the underside of the TPS2065D DBV package, internally connected to GND. It must be soldered to a PCB ground plane to achieve specified RθJA = 53.6°C/W and sustain 1 A continuous current without thermal shutdown. Omitting this connection degrades thermal performance by >40°C/W.
Can the TPS2065D operate from a 2.7 V supply while delivering full 1 A output?
Yes - the TPS2065D maintains 1 A continuous output capability at 2.7 V input, supported by its internal charge pump. However, rDS(on) increases to 75–150 mΩ (vs. 70–135 mΩ at 5 V), raising conduction loss. Thermal design must account for this increase to avoid junction temperature exceedance.
TPS2065D Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Last Time Buy
- 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):
- 70mOhm
- 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
TPS2065D FAQ
1.How can I place an order for TPS2065D through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS2065D 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 TPS2065D reliable?
The price and inventory of TPS2065D are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS2065D is usually 5 days.
3.What payment methods are accepted for TPS2065D?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS2065D transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS2065D?
TPS2065D orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS2065D 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 TPS2065D?
For technical support, including TPS2065D datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS2065D requirements.
6.How does Aetrix verify that TPS2065D is sourced from the original manufacturer or authorized distributors?
All TPS2065D 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 TPS2065D meets industry standards.
7.What is the process for return or replacement of TPS2065D?
All TPS2065D units undergo pre-shipment inspection (PSI). If there is an issue with TPS2065D, 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 TPS2065D part is unused and in its original packaging.
Return procedure for TPS2065D:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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