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Texas Instruments TPS2066DGNR-1
- Part No.:
- TPS2066DGNR-1
- Manufacturer:
- Texas Instruments
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad
- Datasheet:
-
TPS2066DGNR-1.pdf
- Description:
- IC PWR SWITCH N-CHAN 1:2 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,675
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Product details
Overview
TPS2066DGNR-1 from Texas Instruments is a dual-channel, current-limited, high-side power-distribution switch featuring two 70 mΩ N-channel MOSFETs, 1 A continuous output current per channel, thermal and short-circuit protection, and an active discharge function. It operates from 2.7 V to 5.5 V and is used in USB-powered peripherals, portable instrumentation, and multi-rail embedded systems to manage power sequencing and protect downstream loads.
For engineers reviewing the TPS2066DGNR-1 datasheet, TPS2066DGNR-1 pinout, TPS2066DGNR-1 application, or TPS2066DGNR-1 equivalent, key selection criteria include per-channel current limiting (1.1–1.9 A), dual independent enable control (EN1/EN2 active-high), open-drain overcurrent reporting (OC1/OC2), HVSSOP-8 package thermal performance (RθJA = 53.6°C/W), and UVLO threshold (2.0–2.6 V).
Technical Context
The TPS2066DGNR-1 integrates two independent high-side switches with internal charge-pump gate drive enabling full enhancement down to 2.7 V input. Each channel features dedicated enable (EN1/EN2) and fault-reporting (OC1/OC2) pins, supporting asynchronous control and system-level fault isolation.
Its flat current-limit architecture-distinct from peaking-limit variants like TPS2062-1-holds output current at IOS (1.1–1.9 A) without an additional trip threshold, simplifying overcurrent response. Thermal shutdown activates at ~135°C with 10°C hysteresis, and undervoltage lockout disables switching below ~2.0 V on IN.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output current (per channel) | 1 A continuous; supports stable load delivery under sustained 1 A demand without derating at 25°C ambient. |
| rDS(on) | 70 mΩ typical at 5 V; enables <100 mW conduction loss per channel at 1 A, reducing thermal stress in compact layouts. |
| Current limit range | 1.1 A min / 1.9 A max; provides predictable fault-current capping across temperature and process variation. |
| Input voltage range | 2.7 V to 5.5 V; compatible with single-cell Li-ion, USB 2.0/3.0, and 3.3 V/5 V logic rails without external regulation. |
| Rise time (tr) | 0.6 ms typical; limits inrush dI/dt to ~1.7 A/ms, suppressing EMI and preventing supply rail collapse during hot-plug events. |
| Standby supply current | 1 µA max; allows battery-backed systems to maintain >1-year shelf life when switches are disabled. |
| Operating temperature | –40°C to +85°C ambient; validated for industrial and extended-temperature embedded applications. |
Pinout & Package
HVSSOP-8 (DGN) package: 3.0 mm × 3.0 mm, 0.65 mm pitch, exposed thermal pad (connected to GND for optimal heat dissipation). Pin 1 marked by dot; pin numbering follows standard counter-clockwise top-view convention.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pin 1) | Power and signal reference | Primary return path for switch current, charge pump, and logic; must be low-impedance connection to PCB ground plane. |
| IN (Pin 2) | Main power input | Supplies both channels; requires ≥0.1 µF ceramic bypass capacitor placed adjacent to pin for stability. |
| EN1 (Pin 3) | Channel 1 enable input | Active-high TTL/CMOS-compatible control; drives channel 1 switch ON when ≥2.0 V applied. |
| EN2 (Pin 4) | Channel 2 enable input | Active-high TTL/CMOS-compatible control; independent of EN1, enabling asymmetric power sequencing. |
| OC2 (Pin 5) | Channel 2 fault indicator | Open-drain output asserted low during overcurrent or thermal fault; requires external pull-up resistor (e.g., 10 kΩ to VCC). |
| OUT2 (Pin 6) | Channel 2 power output | Switched output for load; connects directly to downstream capacitive or resistive load; supports up to 1 A continuous. |
| OUT1 (Pin 7) | Channel 1 power output | Switched output for load; electrically isolated from OUT2; enables independent load control and fault containment. |
| OC1 (Pin 8) | Channel 1 fault indicator | Open-drain output asserted low during overcurrent or thermal fault; independently monitors channel 1 status. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent high-side switches | Enables separate power control and fault reporting for two downstream subsystems (e.g., USB port + sensor rail) without shared failure modes. |
| Flat current-limit profile | Eliminates overcurrent trip hysteresis and peaking behavior-delivers consistent 1.1–1.9 A limiting across all operating conditions without secondary threshold transitions. |
| Controlled output discharge | Provides 100 Ω internal discharge path when disabled, safely bleeding stored energy from output capacitors (<100 µF typical) within milliseconds. |
| Thermal and short-circuit protection | Shuts off channel automatically during sustained overload; recovers autonomously after junction cools to ~125°C, avoiding manual reset requirements. |
| Undervoltage lockout (UVLO) | Prevents erratic switching or partial turn-on by disabling both channels until IN rises above 2.0–2.6 V, ensuring robust power-up behavior. |
Applications
| USB Peripheral Power Management | Industrial Sensor Node Power Control |
|---|---|
|
Use Scenario: Hot-plug detection and current limiting for USB 2.0 peripheral ports in docking stations or embedded hosts. IC Role / Device Role / Timing Role: Dual-channel high-side switch providing independent 5 V rail switching and real-time OC fault signaling per port. Use Value: Prevents bus voltage droop and host controller damage during cable insertion; eliminates need for discrete polyfuses or current-sense amplifiers. |
Use Scenario: Isolating power to analog sensor subcircuits (e.g., RTD, thermocouple front-ends) during sleep mode in battery-operated condition monitoring devices. IC Role / Device Role / Timing Role: Low-quiescent, dual-output power gate enabling precise wake-up sequencing and leakage suppression. Use Value: Reduces system standby current to <1 µA per channel; discharge function clears residual sensor bias voltages before re-enabling. |
| Multi-Rail Embedded System Sequencing | Portable Medical Device Load Protection |
|
Use Scenario: Controlled power-up of FPGA I/O banks and auxiliary logic rails in portable test equipment with tight thermal budgets. IC Role / Device Role / Timing Role: Dual 1 A distribution switch with independent EN timing and thermal foldback for safe ramp-up of parallel loads. Use Value: Limits inrush to ≤1.9 A per rail; rise time control (0.6 ms) prevents simultaneous switching noise coupling into sensitive analog sections. |
Use Scenario: Protecting patient-connected analog front-ends (e.g., ECG, SpO₂) from short circuits caused by electrode disconnection or fluid ingress. IC Role / Device Role / Timing Role: Safety-isolated power switch with medical-grade fault reporting (OC1/OC2) and automatic thermal recovery. Use Value: Complies with IEC 60601-1 creepage/clearance requirements via HVSSOP-8 spacing; OC assertion triggers system-level alarm without software polling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel power-switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS2062DR | Peaking current-limit architecture (IOC = 2.4–3.0 A, IOS = 1.1–1.9 A); single EN input; no OC1/OC2 separation. | Less suitable for independent channel monitoring; better for cost-sensitive, non-fault-isolated designs where only one fault flag suffices. | Select TPS2062DR only if dual independent fault reporting is unnecessary and lower BOM count is prioritized over diagnostic granularity. |
| TPS2056ADGNG4 | 80 mΩ rDS(on); 500 mA per channel; same HVSSOP-8 package; no discharge function; OC deglitch = 4–15 ms. | Lower current rating and higher on-resistance limit use to low-power peripherals; absence of discharge function increases risk of residual voltage on disconnected loads. | Choose TPS2056ADGNG4 only for ≤500 mA loads where thermal margin is ample and controlled discharge is not required. |
Compared with TPS2062DR and TPS2056ADGNG4, the TPS2066DGNR-1 uniquely delivers flat 1 A current limiting with per-channel EN/OC control and integrated discharge-making it optimal for applications requiring deterministic fault response, independent rail management, and fast load decoupling.
Availability
TPS2066DGNR-1 is available at Aetrix Electronics and suitable for USB peripheral power management, industrial sensor node power control, multi-rail embedded system sequencing, and portable medical device load protection requiring stable component supply and long-term production continuity.
Supply support for TPS2066DGNR-1 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-switch design.
The TPS206x-1 family was engineered specifically for robust, low-voltage power distribution in space-constrained, thermally sensitive applications-emphasizing fault resilience, minimal external components, and seamless integration with USB and battery-powered systems.
FAQ
What is the maximum continuous output current per channel for the TPS2066DGNR-1?
The TPS2066DGNR-1 supports 1 A continuous output current per channel under recommended operating conditions (TA ≤ 85°C, VIN = 2.7–5.5 V). This rating is validated across the full ambient temperature range and accounts for thermal derating in the HVSSOP-8 package. The device enters constant-current limiting at 1.1–1.9 A during faults, but sustained operation above 1 A is not specified.
Does the TPS2066DGNR-1 support independent enable and fault reporting for each channel?
Yes, the TPS2066DGNR-1 provides fully independent control and monitoring: EN1 and EN2 are separate active-high inputs, and OC1 and OC2 are dedicated open-drain fault outputs. This allows asynchronous channel activation, individual fault detection, and system-level diagnostics without cross-talk-critical for applications like dual-port USB hubs or redundant sensor power rails.
How does the current-limiting behavior of the TPS2066DGNR-1 differ from the TPS2062-1?
The TPS2066DGNR-1 uses a flat current-limit profile, holding output current at IOS (1.1–1.9 A) without a distinct overcurrent trip threshold. In contrast, the TPS2062-1 employs a peaking profile with separate IOC (2.4–3.0 A) and IOS (1.1–1.9 A) thresholds, causing temporary current overshoot before settling. This makes the TPS2066DGNR-1 more predictable for EMI-sensitive or tightly regulated loads.
What is the purpose and specification of the discharge function in the TPS2066DGNR-1?
The discharge function in the TPS2066DGNR-1 provides a 100 Ω internal resistive path from OUTx to GND when the device is disabled (ENx low or VIN < UVLO). It safely bleeds stored charge from output capacitors-typically ≤100 µF-within milliseconds, preventing residual voltage from interfering with downstream circuitry or causing unsafe hot-plug conditions.
What thermal protection mechanism does the TPS2066DGNR-1 implement, and how does it recover?
The TPS2066DGNR-1 incorporates junction-temperature sensing that disables the power switch when die temperature reaches ~135°C due to overload or poor heatsinking. Recovery is fully automatic: once the junction cools to ~125°C (10°C hysteresis), the channel re-enables without external intervention. This cycle repeats until the fault is removed, protecting both the IC and the load.
TPS2066DGNR-1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Switch Type:
- General Purpose
- Number of Outputs:
- 2
- Ratio - Input:Output:
- 1:2
- 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:
- Load Discharge, 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-HVSSOP
TPS2066DGNR-1 FAQ
1.How can I place an order for TPS2066DGNR-1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS2066DGNR-1 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 TPS2066DGNR-1 reliable?
The price and inventory of TPS2066DGNR-1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS2066DGNR-1 is usually 5 days.
3.What payment methods are accepted for TPS2066DGNR-1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS2066DGNR-1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS2066DGNR-1?
TPS2066DGNR-1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS2066DGNR-1 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 TPS2066DGNR-1?
For technical support, including TPS2066DGNR-1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS2066DGNR-1 requirements.
6.How does Aetrix verify that TPS2066DGNR-1 is sourced from the original manufacturer or authorized distributors?
All TPS2066DGNR-1 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 TPS2066DGNR-1 meets industry standards.
7.What is the process for return or replacement of TPS2066DGNR-1?
All TPS2066DGNR-1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS2066DGNR-1, 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 TPS2066DGNR-1 part is unused and in its original packaging.
Return procedure for TPS2066DGNR-1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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