My Inquiry
My Account
Texas Instruments TPS2066ADRBT
- Part No.:
- TPS2066ADRBT
- Manufacturer:
- Texas Instruments
- Package:
- 8-VDFN Exposed Pad
- Datasheet:
-
TPS2066ADRBT.pdf
- Description:
- IC PWR SWITCH N-CHAN 1:2 8SON
- Quantity:
- Payment:
- Shipping:
Inventory:704
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TPS2066ADRBT from Texas Instruments is a dual-channel, current-limited power-distribution switch featuring two 70 mΩ N-channel MOSFETs, 1 A continuous per-channel output, 2.7 V to 5.5 V input operation, thermal/short-circuit protection, and active-high enable logic - designed for USB-compliant port power control in embedded host systems.
For engineers reviewing the TPS2066ADRBT datasheet, TPS2066ADRBT pinout, TPS2066ADRBT application, or TPS2066ADRBT equivalent, key selection criteria include per-channel current-limit accuracy (1.2–2.0 A), soft-start rise time (0.6 ms typ.), undervoltage lockout (2.0–2.5 V), open-drain OCx fault reporting, and SON-8 PowerPAD™ thermal performance (RθJA = 47.5 °C/W).
Technical Context
The TPS2066ADRBT integrates an internal charge pump enabling full gate drive of its N-channel high-side switches down to 2.7 V input, eliminating external boost components. Its overcurrent response uses dual-threshold limiting (IOC trip + IOS constant-current hold) with 8-ms deglitched OCx assertion to suppress false triggers during capacitive inrush.
Thermal shutdown activates at ≥135 °C per channel with automatic recovery at ≤125 °C, allowing independent channel operation under fault. Enable inputs are active-high (EN1/EN2), and OC1/OC2 outputs are open-drain, active-low with 0.4 V max VOL at 5 mA sink - compatible with 3.3 V or 5 V logic monitoring.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| rDS(on) | 70 mΩ typical per channel at 25°C - enables <100 mW conduction loss at 1 A, critical for thermally constrained USB ports |
| Current limit | 1.2 A min / 2.0 A max per channel - ensures reliable 1 A continuous delivery while tolerating transient surges |
| Rise time (tr) | 0.6 ms typical - provides controlled soft-start to limit inrush into heavy capacitive loads (e.g., USB peripherals) |
| Supply current (enabled) | 60 μA typical - minimizes quiescent load on battery-backed or low-power host supplies |
| UVLO threshold | 2.0–2.5 V rising - prevents erratic switching during brown-out or cold-start conditions |
| Thermal shutdown | 135 °C activation / 125 °C recovery - protects silicon integrity during sustained overload without latch-off |
| Operating temp | –40°C to 85°C ambient - supports industrial and extended-temperature embedded applications |
Pinout & Package
TPS2066ADRBT uses the DRB-8 (SON-8) package with exposed PowerPAD™ thermal pad. The PowerPAD must be soldered to a GND-connected copper area for thermal and electrical integrity - required for UL certification and optimal RθJA = 47.5 °C/W performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN1 | Active-high enable input | Logic high (>2 V) enables Channel 1 (IN→OUT1); low disables switch and reduces supply current to <1 μA |
| GND | Ground reference | Common return for power, logic, and thermal pad connection - mandatory for PowerPAD functionality |
| IN | Main power input | Accepts 2.7–5.5 V supply; feeds both channels and internal charge pump - UVLO disabled below ~2.0 V |
| EN2 | Active-high enable input | Independent logic control for Channel 2 (IN→OUT2); allows staggered or selective port powering |
| OUT2 | Channel 2 switched output | Delivers current-limited, soft-started power to load; voltage follows IN minus I×rDS(on) drop |
| OC1 | Open-drain fault indicator | Asserts low during overcurrent or thermal fault on Channel 1; requires external pull-up for logic-level signaling |
| OUT1 | Channel 1 switched output | Primary regulated output path; supports bidirectional current flow during hot-plug events |
| OC2 | Open-drain fault indicator | Independent fault flag for Channel 2 - enables per-port diagnostics without shared interrupt lines |
Key Features
| Feature | Design Value |
|---|---|
| Built-in soft-start | 0.6 ms typical rise time limits inrush current into 100 µF+ loads - eliminates need for external RC timing networks |
| Deglitched OCx reporting | 8 ms internal deglitch prevents false fault asserts during normal capacitive turn-on transients |
| UL listed (E169910) | Certified for both single- and ganged-channel configurations - satisfies safety requirements for end-equipment approval |
| Charge-pump gate drive | Operates from 2.7 V input - enables full enhancement of N-channel MOSFETs without external boost circuitry |
| Per-channel thermal protection | Independent 135 °C shutdown per switch - allows one channel to remain operational during fault on the other |
Applications
| USB Host Port Protection | Industrial I/O Module Power Control |
|---|---|
Use Scenario: Protecting individual downstream USB ports on an embedded host controller against short circuits and hot-plug inrush. IC Role / Device Role / Timing Role: Dual-channel high-side power switch with per-port current limiting and fault reporting. Use Value: Enables compliance with USB 2.0 500 mA per-port limit while providing real-time OCx fault visibility and automatic thermal recovery. |
Use Scenario: Sequencing and protecting 24 V or 5 V field I/O power rails in programmable logic controllers (PLCs). IC Role / Device Role / Timing Role: Current-limited distribution switch with robust thermal management for harsh environments. Use Value: Delivers 1 A per rail with 70 mΩ on-resistance and –40°C to 85°C operation - reducing external heatsinking needs. |
| Hot-Swappable Peripheral Bay | Medical Device Power Isolation |
Use Scenario: Safely powering removable peripheral modules (e.g., sensor carriers) in diagnostic equipment with live insertion capability. IC Role / Device Role / Timing Role: Bidirectional, soft-started power switch with fast OCx response for plug/unplug event detection. Use Value: Prevents bus voltage collapse during insertion and provides immediate fault isolation - meeting IEC 60601-1 creepage/clearance requirements via galvanic separation. |
Use Scenario: Isolating auxiliary power domains (e.g., display backlight, motor drivers) in Class II medical devices requiring fault containment. IC Role / Device Role / Timing Role: Dual independent power switches with UL-certified ganged configuration support. Use Value: UL E169910 listing validates safe operation in patient-connected systems; per-channel thermal shutdown prevents cascading failures. |
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 |
|---|---|---|---|
| TPS2066AD | SOIC-8 (D package), higher RθJA = 119.3 °C/W, no PowerPAD™ - requires larger PCB copper for same thermal performance | Suitable for through-hole or legacy SOIC layouts; less effective for high-density USB hub designs | Select when board space allows SOIC footprint and thermal budget permits higher junction temperature rise |
| TPS2056D | Single-channel, 500 mA rated, SOIC-8 - lacks dual-channel integration and ganged-mode capability | Used where per-rail current demand is ≤500 mA and independent layout routing is acceptable | Choose only if system requires lower current rating and discrete channel control outweighs integration benefits |
Compared with TPS2066ADRBT, the TPS2066AD trades thermal efficiency for package compatibility, while the TPS2056D sacrifices channel count and current capacity for cost-sensitive single-rail use - making TPS2066ADRBT optimal for compact, high-reliability dual-port USB or industrial power distribution.
Availability
TPS2066ADRBT is available at Aetrix Electronics and suitable for USB host designs, industrial I/O modules, hot-swappable peripheral bays, and medical auxiliary power systems requiring stable component supply, long-term lifecycle support, and certified safety compliance.
Supply support for TPS2066ADRBT 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 delivering analog, embedded processing, and connectivity solutions with emphasis on reliability, precision, and energy efficiency.
The TPS206xA family was engineered specifically for robust, current-limited power distribution in USB-compliant and industrial hot-plug applications - prioritizing fault resilience, thermal autonomy, and minimal external component count.
FAQ
What is the maximum continuous current per channel for TPS2066ADRBT?
The TPS2066ADRBT supports 1 A continuous current per channel under recommended operating conditions (2.7 V to 5.5 V input, –40°C to 85°C ambient). Its current-limit threshold is specified from 1.2 A minimum to 2.0 A maximum, ensuring reliable delivery of rated current while accommodating process and temperature variation. This makes TPS2066ADRBT suitable for USB 2.0 high-power port applications requiring up to 500 mA per downstream device, with margin for transient surges.
Does TPS2066ADRBT require external components for gate drive or soft-start?
No, the TPS2066ADRBT integrates an internal charge pump that generates sufficient gate voltage to fully enhance its 70 mΩ N-channel MOSFETs from inputs as low as 2.7 V - eliminating external boost capacitors or diodes. Soft-start is implemented internally with a typical 0.6 ms rise time, requiring no external timing components. Only 0.1 µF ceramic bypass capacitors on IN and each OUT are recommended for noise suppression and transient stability - all other functionality is self-contained within the TPS2066ADRBT die.
How does the OCx fault reporting work on TPS2066ADRBT?
The TPS2066ADRBT features two open-drain, active-low OCx outputs (OC1 and OC2) that assert during overcurrent or thermal fault on their respective channels. Each OCx signal is deglitched with an ~8 ms internal timer to prevent false triggering during normal capacitive inrush events. OCx remains asserted until the fault condition clears and the device recovers - for thermal faults, recovery occurs automatically once junction temperature falls below ~125 °C. External pull-up resistors (e.g., to 3.3 V or 5 V) are required to interface OCx with microcontroller GPIOs or interrupt controllers.
Can TPS2066ADRBT be used in ganged mode to deliver higher total current?
Yes, the TPS2066ADRBT supports ganged operation where both OUT1 and OUT2 are tied together to increase total available current. In this configuration, the ganged short-circuit output current is specified at 2.4–4.0 A (min–max), with a ganged overcurrent trip threshold of 4.2–4.9 A. UL certification (File No. E169910) explicitly covers both single- and ganged-channel configurations, confirming safe operation under combined load conditions - provided PCB layout maintains equal current sharing and thermal management accounts for doubled power dissipation.
What is the role of the PowerPAD™ on the TPS2066ADRBT DRB package?
The exposed PowerPAD™ on the TPS2066ADRBT's DRB-8 (SON-8) package must be soldered to a GND-connected copper pour to serve dual functions: (1) thermal conduction - reducing RθJA to 47.5 °C/W for improved power handling, and (2) electrical grounding - completing the internal thermal sense and charge pump return paths. TI documentation states that connecting the PowerPAD™ to GND is mandatory for UL certification (E169910) and proper device operation; omitting this connection risks thermal runaway, inaccurate current limiting, and non-compliance with safety standards.
TPS2066ADRBT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 8-VDFN Exposed Pad
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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:
- 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-SON (3x3)
TPS2066ADRBT FAQ
1.How can I place an order for TPS2066ADRBT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS2066ADRBT 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 TPS2066ADRBT reliable?
The price and inventory of TPS2066ADRBT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS2066ADRBT is usually 5 days.
3.What payment methods are accepted for TPS2066ADRBT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS2066ADRBT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS2066ADRBT?
TPS2066ADRBT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS2066ADRBT 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 TPS2066ADRBT?
For technical support, including TPS2066ADRBT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS2066ADRBT requirements.
6.How does Aetrix verify that TPS2066ADRBT is sourced from the original manufacturer or authorized distributors?
All TPS2066ADRBT 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 TPS2066ADRBT meets industry standards.
7.What is the process for return or replacement of TPS2066ADRBT?
All TPS2066ADRBT units undergo pre-shipment inspection (PSI). If there is an issue with TPS2066ADRBT, 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 TPS2066ADRBT part is unused and in its original packaging.
Return procedure for TPS2066ADRBT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPS2066ADRBT 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…
