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Texas Instruments TPS2054BD
- Part No.:
- TPS2054BD
- Manufacturer:
- Texas Instruments
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TPS2054BD.pdf
- Description:
- IC PWR SWITCH N-CH 2X1:2 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,463
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Product details
Overview
TPS2054BD from Texas Instruments is a quad-channel, current-limited power-distribution switch with 70mΩ high-side N-channel MOSFETs per channel, 500mA continuous output current per channel, 2.7V–5.5V input voltage range, and integrated thermal/short-circuit protection. It enables controlled power sequencing in USB-powered peripherals and multi-rail embedded systems.
For engineers reviewing the TPS2054BD datasheet, TPS2054BD pinout, TPS2054BD application, or TPS2054BD equivalent, key selection criteria include per-channel enable control, accurate 0.75A–1.25A current-limit threshold, <1μA standby supply current, undervoltage lockout (2.0–2.6V), and SOIC-16 package compatibility with industrial temperature range (–40°C to 85°C).
Technical Context
The TPS2054BD integrates four independent high-side switches, each driven by an internal charge pump enabling full enhancement down to 2.7V input. Each channel features active-low open-drain OCx fault reporting with 4–15ms deglitching and no glitch during power-up.
It implements constant-current limiting under overload, followed by thermal shutdown at 135°C (10°C hysteresis) and automatic recovery. Undervoltage lockout prevents operation below valid input thresholds, and gate drive rise/fall times are internally optimized to minimize inrush surges-0.6ms typical rise time with 1µF load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Channels | Quad independent high-side power switches |
| rDS(on) | 70mΩ typical per channel at 5V input - enables low conduction loss and minimal self-heating at 500mA |
| Current limit | 0.75A min / 1.25A max - tightly bounded trip window ensures predictable fault response across voltage/temperature |
| Input voltage | 2.7V to 5.5V - supports single-supply operation from 3.3V or 5V rails, including USB VBUS |
| Standby current | ≤2μA maximum - allows always-on system monitoring without significant battery drain |
| Rise time | 0.6ms typical - limits inrush di/dt into heavy capacitive loads (e.g., 100µF downstream) |
| UVLO threshold | 2.0V to 2.6V rising edge - prevents erratic switching during brownout or soft-start conditions |
| Operating temp | –40°C to +85°C ambient - qualified for industrial and extended commercial environments |
Pinout & Package
TPS2054BD is supplied in a 16-pin SOIC package (9.90mm × 3.91mm body size) with exposed PowerPAD™ thermally connected to GND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN1, IN2 | Power input rails | IN1 supplies OUT1/OUT2; IN2 supplies OUT3/OUT4 - dual-input architecture enables isolated rail management |
| EN1–EN4 | Enable inputs | Active-high logic enables corresponding channel - allows independent sequencing of four loads |
| OUT1–OUT4 | Switched outputs | High-side switched outputs with 70mΩ rDS(on); each drives its own load independently |
| OC1–OC4 | Open-drain fault outputs | Active-low overcurrent indicators - debounced, glitch-free, and asserted only after sustained fault |
| GND (Pins 1, 5) | Ground reference | Dual GND pins reduce ground impedance and improve thermal dissipation via PowerPAD™ |
| NC (Pins 8, 9, 10) | No connection | Unbonded pins - must remain unconnected per TI design; no routing or grounding allowed |
Key Features
| Feature | Design Value |
|---|---|
| Per-channel enable control | Enables precise power-up/down sequencing of four independent downstream loads without shared timing constraints |
| Accurate current limiting | Guaranteed 0.75A–1.25A trip window ensures reliable short-circuit protection while avoiding nuisance trips on capacitive inrush |
| Thermal shutdown with hysteresis | Shuts off at 135°C and recovers automatically at 125°C - prevents latch-up and enables safe self-recovery after overload |
| UVLO with 75mV hysteresis | Prevents unstable operation during supply ramp-up or brownout, ensuring clean enable/disable transitions |
| Low quiescent current | ≤2μA max standby current supports long-term battery-backed monitoring in always-on systems |
| Charge-pump gate drive | Eliminates need for external boost components - enables full MOSFET enhancement from 2.7V input |
Applications
| USB Hub Power Management | Industrial I/O Module Protection |
|---|---|
Use Scenario: Distributing 5V power to four downstream USB ports with individual overcurrent isolation. IC Role / Device Role / Timing Role: Quad high-side switch providing per-port enable/disable and fault reporting via OC1–OC4. Use Value: Prevents single-port short from disabling entire hub; meets USB 2.0 current-limit compliance with 500mA/channel. | Use Scenario: Protecting four field-connected sensor inputs against wiring faults and ESD-induced shorts. IC Role / Device Role / Timing Role: Isolates 24V-derived 5V sensor rails with fast current limiting and thermal recovery. Use Value: Enables hot-swap capability and field-serviceable modules without system-level shutdown. |
| Embedded System Rail Sequencing | Point-of-Load Backup Switching |
Use Scenario: Controlling power delivery to FPGA I/O banks, memory interfaces, and peripheral controllers in defined order. IC Role / Device Role / Timing Role: Four independent enable-controlled switches synchronized via MCU GPIOs. Use Value: Eliminates need for discrete MOSFETs, level shifters, and RC timing networks - reduces BOM count and layout area. | Use Scenario: Providing redundant 3.3V supply paths to critical microcontroller subsystems with automatic failover detection. IC Role / Device Role / Timing Role: Dual-input (IN1/IN2) architecture allows seamless switchover between primary and backup 3.3V sources. Use Value: Supports uninterrupted operation during source transition; OCx signals feed MCU for real-time fault logging. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad-channel power-switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS2044BD | Same SOIC-16 package and pinout; uses logic-low enable (active-low EN), whereas TPS2054BD uses logic-high enable (active-high EN) | Requires inverted enable signals from host controller; not drop-in compatible without firmware or level-shifter changes | Select when legacy active-low control logic is already implemented and board layout cannot be modified |
| TPS2054DR | Identical electrical specs and active-high enable, but in 8-pin HVSSOP (3.0mm × 3.0mm) - smaller footprint, different pinout, no NC pins | Not pin-compatible; requires PCB redesign; better thermal performance (RθJA = 53.6°C/W vs 81.6°C/W) | Select for space-constrained designs where thermal margin is critical and layout revision is feasible |
Compared with TPS2044BD and TPS2054DR, the TPS2054BD offers direct compatibility with active-high MCU GPIOs and SOIC-16 layout reuse, while delivering identical current-limit accuracy and thermal protection - making it optimal for industrial control boards requiring proven reliability and minimal firmware adaptation.
Availability
TPS2054BD is available at Aetrix Electronics and suitable for USB peripheral designs, industrial I/O modules, embedded rail sequencers, and point-of-load backup systems requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for TPS2054BD 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 company headquartered in Dallas, Texas, specializing in analog, embedded processing, and power management ICs for industrial, automotive, and communications markets.
The TPS20xxB family was designed specifically for robust, current-limited power distribution in systems subject to heavy capacitive loads and frequent short-circuit events - targeting USB, docking stations, programmable logic controllers, and modular instrumentation.
FAQ
What is the maximum continuous current per channel for the TPS2054BD?
The TPS2054BD supports 500mA continuous output current per channel under recommended operating conditions (2.7V–5.5V input, –40°C to +85°C). This rating is maintained across all four channels simultaneously when thermal limits are observed, and derating applies above 85°C ambient per the RθJA value of 81.6°C/W in SOIC package.
Does the TPS2054BD require external components for gate drive or current limiting?
No, the TPS2054BD integrates an internal charge pump for gate drive and fixed current-limit circuitry - no external capacitors, resistors, or FETs are required. The device operates autonomously with only input decoupling (0.1µF + 22µF per IN rail) and optional pull-up on OCx lines for system-level fault monitoring.
How does the TPS2054BD handle simultaneous overcurrent events on multiple channels?
Each channel of the TPS2054BD operates independently: OC1–OC4 assert low individually upon current-limit violation. Thermal shutdown activates only if cumulative power dissipation raises junction temperature to 135°C - which requires sustained overload across ≥2 channels. Faults clear automatically once current drops and temperature falls below 125°C.
Can the TPS2054BD be used with a 2.5V input supply?
No - the TPS2054BD has a minimum input voltage of 2.7V due to internal charge pump requirements. Operation below 2.7V triggers undervoltage lockout (UVLO), disabling all channels. For 2.5V systems, consider the TPS2064 or TPS2068 families, which support down to 2.7V but differ in channel count and protection features.
Is the TPS2054BD UL recognized?
Yes - the TPS2054BD carries UL Recognition under File Number E169910. This certification covers the device's construction and safety-related performance, including thermal protection and isolation integrity, and applies to standard SOIC packaging used in end-equipment compliance testing.
TPS2054BD Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Active
- Switch Type:
- General Purpose
- Number of Outputs:
- 4
- 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):
- 500mA
- Rds On (Typ):
- 70mOhm
- Input Type:
- Non-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
TPS2054BD FAQ
1.How can I place an order for TPS2054BD through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS2054BD 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 TPS2054BD reliable?
The price and inventory of TPS2054BD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS2054BD is usually 5 days.
3.What payment methods are accepted for TPS2054BD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS2054BD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS2054BD?
TPS2054BD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS2054BD 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 TPS2054BD?
For technical support, including TPS2054BD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS2054BD requirements.
6.How does Aetrix verify that TPS2054BD is sourced from the original manufacturer or authorized distributors?
All TPS2054BD 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 TPS2054BD meets industry standards.
7.What is the process for return or replacement of TPS2054BD?
All TPS2054BD units undergo pre-shipment inspection (PSI). If there is an issue with TPS2054BD, 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 TPS2054BD part is unused and in its original packaging.
Return procedure for TPS2054BD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPS2054BD Tags
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