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Texas Instruments TPS2047DR
- Part No.:
- TPS2047DR
- Manufacturer:
- Texas Instruments
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TPS2047DR.pdf
- Description:
- IC PWR SWTCH N-CH 1:2/1:1 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,364
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Product details
Overview
TPS2047DR from Texas Instruments is a triple-channel, current-limited, high-side power-distribution switch IC with 135-mΩ (5-V) on-resistance per channel, 250 mA continuous output current per channel, active-low enable logic, and independent overcurrent/thermal protection with open-drain OCx outputs. It operates from 2.7 V to 5.5 V and is used in USB peripheral power management, hot-plug insertion circuits, and multi-rail PC peripheral distribution.
For engineers reviewing the TPS2047DR datasheet, TPS2047DR pinout, TPS2047DR application, or TPS2047DR equivalent, key selection considerations include its active-low enable configuration, SOIC-16 package, 0.44-A short-circuit current limit at 25°C, thermal trip at ~140°C with hysteresis, and compatibility with 3-V/5-V logic interfaces in bus-powered hub and portable device designs.
Technical Context
The TPS2047DR integrates three independent N-channel MOSFET high-side switches, each driven by an internal charge pump enabling operation down to 2.7 V input without external components. Each channel features dedicated current-sense FETs for precise overload detection and a dual-threshold thermal shutdown circuit that isolates faulty channels while maintaining operation of healthy ones.
Its enable inputs (EN1–EN3) are active-low, and overcurrent outputs (OC1–OC3) are open-drain, active-low signals indicating either overcurrent or overtemperature events. The device implements undervoltage lockout (~2 V threshold) and controls rise/fall times (2.5 ms typical rise, 4.4 ms typical fall at 5.5 V) to suppress inrush current and EMI during switching.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Channel count | 3 independent high-side power switches with isolated fault handling |
| Continuous output current | 250 mA per channel - supports stable powering of USB peripherals and low-power embedded loads |
| On-resistance (rDS(on)) | 135 mΩ max at 5 V, 25°C - minimizes voltage drop and power loss under full load |
| Short-circuit current limit | 0.44 A typical at 25°C - enables safe constant-current mode during faults without latch-off |
| Enable logic polarity | Active-low (EN1/EN2/EN3) - compatible with standard system reset or control logic asserting low to activate |
| Operating input voltage | 2.7 V to 5.5 V - supports single-supply operation across 3.3-V and 5-V systems including USB 2.0 |
| Thermal shutdown threshold | ~140°C junction temperature with ~20°C hysteresis - allows automatic recovery after cooling, preserving adjacent channel operation |
| Standby supply current | 20 µA max - ensures ultra-low quiescent power when all channels disabled |
Pinout & Package
TPS2047DR is housed in a 16-pin SOIC (D) package, tape-and-reel format indicated by the "R" suffix. Pin assignments are validated per TI SLVS194 datasheet Figure D PACKAGE (top view).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND1 (Pin 1) | Power ground reference for Channel 1 | Separate ground path for IN1–OUT1 switch; improves noise isolation between channels |
| IN1 (Pin 2) | Input voltage source for Channel 1 | Supplies power to OUT1; accepts 2.7–5.5 V; connects to upstream rail or USB VBUS |
| EN1 (Pin 3) | Active-low enable for Channel 1 | Drives IN1–OUT1 switch ON when logic low; TTL/CMOS compatible |
| EN2 (Pin 4) | Active-low enable for Channel 2 | Drives IN1–OUT2 switch ON when logic low; shares IN1 input but independent control |
| GND2 (Pin 5) | Power ground reference for Channel 2/3 | Shared ground for IN2–OUT2 and IN2–OUT3 paths; decoupling critical for thermal stability |
| IN2 (Pin 6) | Input voltage source for Channels 2 & 3 | Supplies power to OUT2 and OUT3; enables dual-input architecture for rail separation |
| EN3 (Pin 7) | Active-low enable for Channel 3 | Drives IN2–OUT3 switch ON when logic low; fully independent of EN1/EN2 timing |
| NC (Pins 8, 9, 10) | No internal connection | Unused pins; must remain unconnected per datasheet; no routing or grounding required |
| OC1 (Pin 16) | Open-drain overcurrent flag for Channel 1 | Asserts low during IN1–OUT1 overload or thermal event; requires external pull-up for host monitoring |
| OUT1 (Pin 15) | Output for Channel 1 | Switched 250-mA-capable output from IN1; includes built-in slew-rate control and current limiting |
| OUT2 (Pin 14) | Output for Channel 2 | Switched 250-mA-capable output from IN1; shares IN1 but has independent enable and OC2 |
| OC2 (Pin 13) | Open-drain overcurrent flag for Channel 2 | Asserts low during IN1–OUT2 overload or thermal event; electrically isolated from OC1/OC3 |
| OC3 (Pin 12) | Open-drain overcurrent flag for Channel 3 | Asserts low during IN2–OUT3 overload or thermal event; supports per-channel fault diagnostics |
| OUT3 (Pin 11) | Output for Channel 3 | Switched 250-mA-capable output from IN2; enables dual-input, triple-output power partitioning |
| NC (Pins 10, 9, 8) | No internal connection | Redundant NC pins; no electrical function; PCB layout may omit traces or leave floating |
Key Features
| Feature | Design Value |
|---|---|
| Triple independent high-side switches | Enables simultaneous, isolated power control of three downstream loads (e.g., USB ports, sensors, LEDs) with no shared failure propagation |
| Internal charge pump | Eliminates need for external boost components; sustains gate drive above source voltage down to 2.7-V input for full rDS(on) performance |
| Dual-threshold thermal protection | Shuts off only the overloaded channel at ~140°C, preserving other channels; full shutdown occurs only at ~160°C |
| Controlled rise/fall time (2.5 ms / 4.4 ms) | Reduces inrush current peaks and EMI generation during hot-plug events - critical for USB compliance and signal integrity |
| Open-drain OCx outputs | Allows wired-OR fault reporting across multiple TPS2047DR devices or integration with microcontroller interrupt lines using single pull-up resistor |
| Undervoltage lockout (~2 V) | Prevents erratic switching during brown-out or hot-insertion ramp-up; ensures clean turn-on only after stable input is established |
Applications
| USB Bus-Powered Hub | Hot-Insertion Peripheral Card |
|---|---|
|
Use Scenario: Distributing 5-V power to three downstream USB devices from a single upstream port, with individual port power control and fault isolation. IC Role / Device Role / Timing Role: Triple high-side switch managing VBUS delivery, with per-port enable/disable and OCx fault signaling to USB controller. Use Value: Enables compliance with USB power budgeting (100 mA/port), prevents single-point failure, and supports dynamic attach/detach without system reset. |
Use Scenario: Powering FPGA I/O banks, ADC front-ends, or sensor arrays on a PCIe or CompactPCI card inserted into a live backplane. IC Role / Device Role / Timing Role: Controlled power sequencing element that limits inrush, monitors load health, and reports faults before backplane damage occurs. Use Value: Eliminates manual power sequencing hardware; reduces insertion surge current by >70% vs. direct connection; enables automatic fault containment. |
| Notebook Docking Station | Industrial Human-Machine Interface (HMI) |
|
Use Scenario: Managing auxiliary 5-V rails for USB ports, HDMI CEC, and SD card readers in a laptop docking station with strict thermal envelope constraints. IC Role / Device Role / Timing Role: Load-switch supervisor providing independent enable control, thermal derating feedback, and fault logging via OCx lines. Use Value: Allows dynamic power gating of unused peripherals; extends battery life; prevents thermal runaway in confined enclosure space. |
Use Scenario: Isolating 24-V DC-to-5-V converted power to touch controller, display backlight, and CAN transceiver in an industrial panel PC. IC Role / Device Role / Timing Role: Robust power distributor with ESD-hardened (2-kV HBM) I/O and wide ambient range (–40°C to 85°C) for factory-floor reliability. Use Value: Survives voltage transients and electrostatic discharge common in manufacturing environments; maintains uptime during load surges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar triple-channel power-distribution switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS2057DR | Identical SOIC-16 package and electrical specs, but features active-high enable inputs (EN1–EN3) | Requires inverted control logic; unsuitable where existing firmware or hardware asserts low to enable power | Select TPS2057DR only if system-level enable signals are active-high and timing margins allow revalidation of startup sequence |
| TPS2067DR | Higher 500-mA per-channel rating, 75-mΩ rDS(on) at 5 V, and wider 2.7–5.5-V operation; same pinout and OCx behavior | Supports higher-power peripherals (e.g., USB 3.0 SSDs, motor drivers); increases thermal margin but raises BOM cost | Choose TPS2067DR when load current exceeds 250 mA or lower voltage drop (<125 mV @ 250 mA) is required for sensitive analog rails |
Compared with TPS2057DR, TPS2047DR offers native compatibility with low-asserted enable logic in legacy USB hubs; compared with TPS2067DR, it provides cost-optimized protection for sub-250-mA loads while retaining identical footprint, thermal response, and fault-reporting architecture.
Availability
TPS2047DR is available at Aetrix Electronics and suitable for USB peripheral distribution, hot-plug insertion systems, and industrial HMI power management requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for TPS2047DR 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 technologies with over 50 years of innovation in high-reliability IC design.
The TPS2047DR belongs to TI's power-distribution switch product line, engineered specifically for USB-compliant, hot-pluggable, and thermally constrained applications where independent channel protection and low quiescent current are mandatory.
FAQ
What is the enable logic polarity of the TPS2047DR?
The TPS2047DR uses active-low enable inputs (EN1, EN2, EN3): a logic low turns on the corresponding channel, and a logic high disables it. This matches common system reset or power-control architectures where a pulled-down signal activates power. The TPS2047DR datasheet confirms this behavior in the Terminal Functions table and Recommended Operating Conditions section.
Does the TPS2047DR support 3.3-V input operation?
Yes, the TPS2047DR operates from 2.7 V to 5.5 V, and its internal charge pump ensures reliable gate drive even at 3.3-V input. At 3.3 V and 25°C, the typical rDS(on) is 105 mΩ - well within specification - enabling use in mixed-voltage systems such as embedded controllers with 3.3-V logic and 5-V peripheral rails.
How does the TPS2047DR handle thermal faults across its three channels?
The TPS2047DR implements dual-threshold thermal protection: at ~140°C, only the overheating channel shuts off while others remain operational; at ~160°C, all channels disable. After cooling by ~20°C, the tripped channel automatically recovers. This behavior is confirmed in the Thermal Sense section of the SLVS194 datasheet and enables graceful degradation in multi-load systems.
Can the TPS2047DR be used in USB 2.0 applications?
Yes - the TPS2047DR is widely deployed in USB 2.0 bus-powered hubs and peripherals. Its 250-mA per-channel rating meets the USB 2.0 specification for low-/high-power functions, its controlled 2.5-ms rise time suppresses EMI, and its 2-kV HBM ESD rating protects against handling-induced transients - all verified in TI's USB application notes and SLVS194 characterization data.
What is the short-circuit current limit of the TPS2047DR?
The TPS2047DR limits short-circuit output current to 0.44 A typical at 25°C, with a minimum of 0.345 A and maximum of 0.525 A across temperature and process variation. This value is specified in the Current Limit section of the SLVS194 datasheet and enables predictable fault-current clamping without external components.
TPS2047DR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Switch Type:
- General Purpose
- Number of Outputs:
- 3
- 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):
- 250mA
- Rds On (Typ):
- 80mOhm
- Input Type:
- 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:
- 16-SOIC
TPS2047DR FAQ
1.How can I place an order for TPS2047DR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS2047DR 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 TPS2047DR reliable?
The price and inventory of TPS2047DR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS2047DR is usually 5 days.
3.What payment methods are accepted for TPS2047DR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS2047DR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS2047DR?
TPS2047DR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS2047DR 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 TPS2047DR?
For technical support, including TPS2047DR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS2047DR requirements.
6.How does Aetrix verify that TPS2047DR is sourced from the original manufacturer or authorized distributors?
All TPS2047DR 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 TPS2047DR meets industry standards.
7.What is the process for return or replacement of TPS2047DR?
All TPS2047DR units undergo pre-shipment inspection (PSI). If there is an issue with TPS2047DR, 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 TPS2047DR part is unused and in its original packaging.
Return procedure for TPS2047DR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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