TPS2054BDR - Quad 500mA Current-Limited Power Switch | Texas Instruments
MPN: TPS2054BDR β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.28 | $2.28 |
| 10 | $2.04 | $20.40 |
| 100 | $1.64 | $164.00 |
| 500 | $1.35 | $675.00 |
| 1,000 | $1.12 | $1,120.00 |
Drop-in alternatives for TPS2054BDR β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
TPS2054ADR
β Drop-In β οΈ εζ°εΎ ιͺθ―β In Stock
$0.72 / Unit
View Datasheet βTPS2054D
β Drop-In β οΈ εζ°εΎ ιͺθ―π Reference alternative (not in catalog)
TPS2044BDR
β Drop-In β οΈ εζ°εΎ ιͺθ―π Reference alternative (not in catalog)
ST2054BDR
β Drop-Inπ Reference alternative (not in catalog)
TPS2054BDR-Q1
β Drop-In β οΈ εζ°εΎ ιͺθ―π Reference alternative (not in catalog)
TPS2054BDR Maximum Ratings & Electrical Characteristics
| Topology | Quad-channel high-side power-distribution switch (1:1) |
| Switch Type | N-Channel MOSFET (high-side) |
| Number of Channels | 4 |
| On-Resistance (RDS(on)) | 70 mOhm |
| Continuous Output Current | 500 mA per channel |
| Input Voltage Range | 2.7 V to 5.5 V |
| Current Limit (Minimum) | 0.75 A |
| Current Limit (Maximum) | 1.25 A |
| Output Rise Time | 0.6 ms (typical) |
| Protection Features | Thermal shutdown, short-circuit protection, undervoltage lockout |
| Fault Reporting | Deglitched overcurrent (OC) flag |
| Enable Input | Yes (active-high EN) |
| Package | SOIC-16 (D) |
| Mounting Type | Surface Mount |
| RoHS Status | Lead Free / RoHS compliant per distributor listing |
| Packaging | Tape and Reel (R suffix) |
TPS2054BDR soic-16 (d) Pin Configuration Guide
Complete pinout information for TPS2054BDR (soic-16 (d) package) with 16 pins. This power device features gate, drain, and source terminals. For non-polarized packages, refer to the manufacturer datasheet for exact pin 1 orientation and footprint details. Common applications include power supply design, motor driving, and load switching.
No detailed pinout data available for TPS2054BDR.
Refer to the datasheet for full pin configuration.
Estimated pin count: 16 pins (power package)
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this component. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
TPS2054BDR is suitable for 6 applications: USB Hub Port Power Switching, Multi-Port Host and Set-Top Box Power Distribution, Industrial Peripheral and Sensor Rail Gating, Battery-Powered and Portable Device Power Gating, Networking and Router Peripheral Ports, Test and Measurement Instrument Accessory Power.
USB Hub Port Power Switching
The TPS2054BDR is a natural fit for USB hub downstream-port power control because TI positions the TPS2054B family explicitly as a 4-channel, 0.5 A USB power switch. Each of the four channels independently gates the VBUS pin of one downstream port from the shared 5 V input, while the 70 mOhm on-resistance keeps the voltage drop to roughly 35 mV at a full 500 mA USB 2.0 unit load, preserving compliance with the USB VBUS droop budget. The 0.6 ms typical rise time soft-starts each port, limiting inrush when a device is hot-plugged so the upstream supply does not sag or trip the current limit on every connection event. If a plugged-in device faults and draws more than the 0.75 A to 1.25 A limit window, the affected channel current-limits and the deglitched OC flag notifies the hub controller, which can then report a port fault upstream without disturbing the other three ports. Integrated thermal shutdown and undervoltage lockout complete the fault containment. Paired with a USB hub controller and ESD protection on the data lines, one TPS2054BDR replaces four discrete load switches, cutting BOM count and board area in a standard 4-port hub design.
Recommended
Multi-Port Host and Set-Top Box Power Distribution
Set-top boxes, monitors, and TV host platforms often expose two or more USB ports plus auxiliary 5 V accessory outputs from a single internal supply. The TPS2054BDR's four independently switched 500 mA channels let the system MCU power-gate each port via the active-high enable, so an unused port draws only the switch leakage instead of a live rail, improving standby power. The 2.7 V to 5.5 V input range tolerates realistic 5 V rail sag during peak load, and undervoltage lockout keeps outputs cleanly off during supply brownout so downstream devices never see partial power. Hot-plug robustness is handled by the 0.6 ms soft-start ramp, which absorbs the surge of a freshly connected bus-powered device. When a shorted cable or failed accessory is attached, the per-channel current limit between 0.75 A and 1.25 A confines the fault current, and the deglitched OC output gives the MCU a clean interrupt to display a user-facing error. Because all four channels share one SOIC-16 footprint with a 70 mOhm switch, thermal design is trivial: estimated total dissipation at full load is only about 70 mW, requiring no heatsink in a typical enclosed set-top chassis.
Recommended
Industrial Peripheral and Sensor Rail Gating
In industrial control panels and automation nodes, multiple sensors, encoders, and field peripherals frequently share a 5 V auxiliary rail, and serviceability demands that a shorted peripheral not drag down the whole system. The TPS2054BDR provides four protected branch circuits from one SOIC-16: each 70 mOhm high-side switch feeds one peripheral group, and the accurate 0.75 A to 1.25 A current limit isolates fault current per branch while the PLC or microcontroller reads the deglitched OC flag to identify and log which branch failed. The 2.7 V to 5.5 V operating range suits both 3.3 V and 5 V logic worlds, and undervoltage lockout ensures clean power-up sequencing when the panel supply ramps. Because each channel switches only 500 mA across 70 mOhm, per-channel dissipation is about 17.5 mW (estimated from I2R), so the device runs cool inside sealed enclosures without airflow. The active-high enable allows the controller to power-cycle a hung peripheral remotely, a common technique for unattended equipment. Compared with discrete PTC fuses plus relays, the TPS2054BDR adds logic-controlled switching, fast electronic fault clearing, and telemetry in one IC.
Recommended
Battery-Powered and Portable Device Power Gating
Portable instruments, handheld scanners, and battery accessories benefit from the TPS2054BDR's ability to switch entire peripheral sub-blocks off under firmware control. Operating from a 2.7 V to 5.5 V input, the quad switch accommodates Li-ion pack rails through low-dropout regulation stages or charge-pump-derived 5 V, and the 70 mOhm channels waste minimal energy: at 500 mA a channel drops only 35 mV and dissipates roughly 17.5 mW (estimated), preserving battery runtime. The 0.6 ms soft-start ramps each sub-block gently so inrush does not dip the battery rail enough to reset the microcontroller. The active-high enable lets the MCU power-gate the wireless module, display backlight, and sensor array independently, and during shutdown only switch leakage remains. If a peripheral is damaged and shorts, the 0.75 A to 1.25 A current limit prevents battery dump-through and the thermal shutdown protects the die, while the OC flag allows graceful firmware handling such as disabling that port and warning the user. One SOIC-16 replaces four discrete load switches, valuable in compact handheld layouts.
Recommended
Networking and Router Peripheral Ports
Routers, IP cameras, and network-attached storage products include USB ports for storage dongles or LTE modems that must tolerate hot-plugging and arbitrary consumer devices. The TPS2054BDR gates those ports from the internal 5 V rail with per-port 500 mA capability consistent with USB 2.0 budgets; the 70 mOhm switch drop of about 35 mV at full load keeps VBUS within tolerance even with long internal traces. The 0.6 ms rise time suppresses the capacitive inrush of large storage devices, which otherwise would glitch the shared rail and reset the SoC. Should a connected modem or drive fail short, the 0.75 A to 1.25 A current limit contains the fault and the deglitched OC output informs the CPU, which can disable that port while the router continues routing traffic on the others - a resilience requirement in always-on network equipment. Undervoltage lockout prevents stutter during brownout events common in line-powered premises hardware. Thermal load is minimal (about 17.5 mW per active channel, estimated), so operation in fanless, convection-cooled network enclosures is straightforward.
Recommended
Test and Measurement Instrument Accessory Power
Bench instruments, data loggers, and modular test systems provide accessory USB or auxiliary 5 V outputs whose reliability defines the user experience. The TPS2054BDR gives the instrument designer four independently controlled, current-limited outputs in one package: the 0.75 A to 1.25 A electronic current limit reacts in microseconds to protect the instrument supply from probe shorts or miswired accessories, far faster than a thermal fuse, and the deglitched OC flag can trigger an on-screen warning identifying the affected connector. The 2.7 V to 5.5 V input range works with the instrument's regulated 5 V rail even under sag, while undervoltage lockout guarantees that outputs stay off until the main supply is valid during power-up. Firmware can power-cycle an accessory via the active-high enable without user intervention. Because each 70 mOhm channel dissipates only about 17.5 mW at 500 mA (estimated I2R), the device adds negligible heat inside sealed instrument enclosures. For designs needing more ports, additional TPS2054BDR units share identical firmware drivers, simplifying scaling from one quad to a fully switched I/O panel.
Recommended
Recommended Products Summary
Engineering reference data for TPS2054BDR β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | TPS2054ADR | TPS2054D | TPS2044BDR | ST2054BDR | TPS2054BDR-Q1 |
|---|---|---|---|---|---|---|
| Package | SOIC-16 (D) | SOIC-16 (D) - same | SOIC-16 (D) - same | SOIC-16 (D) - same | SOIC-16 (D) - same | SOIC-16 (D) - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | STMicroelectronics | Texas Instruments |
| Channels | 4 | 4 | 4 | 4 | 4 (2x1:2 config) | 4 |
| On-Resistance | 70 mOhm | 70 mOhm class | 70 mOhm | [DATA_NEEDED] | [DATA_NEEDED] | 70 mOhm |
| Continuous Current per Channel | 500 mA | 500 mA | 500 mA | 500 mA | 500 mA | 500 mA |
| Current Limit Range | 0.75 A min / 1.25 A max | [DATA_NEEDED] | 0.7 A min / 1.3 A max | [DATA_NEEDED] | [DATA_NEEDED] | 0.75 A min / 1.25 A max |
| Input Voltage Range | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V | [DATA_NEEDED] | 2.7 V to 5.5 V |
| Rise Time (typical) | 0.6 ms | 0.6 ms class | 0.6 ms | [DATA_NEEDED] | [DATA_NEEDED] | 0.6 ms |
| Automotive Grade | No | No | No | No | No | Yes (AEC-Q100) |
| Unit Price (qty 1) | $2.28 as of 2026-09-03 | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] |
Key Differentiators
- Tightest specified current-limit band in the family (vs TPS2054D)
- Low switch drop at full USB load (vs ST2054BDR)
- Automotive path exists in same footprint (vs TPS2054BDR-Q1)
Design Notes
Estimated: at 500 mA per channel across the 70 mOhm switch, each channel dissipates I2R = 17.5 mW, so four fully loaded channels total roughly 70 mW - trivially handled by the SOIC-16 with normal PCB copper. The thermal design concern is not steady-state load but repeated short-circuit events, where the channel sits in current limit at up to 1.25 A; during these events the die heats rapidly and relies on internal thermal shutdown cycling. Keep the part away from other heat sources and ensure at least a modest ground-plane connection to the SOIC leads so fault-mode thermal cycling stays within datasheet limits.
Place a low-ESR ceramic capacitor (typically on the order of 0.1 uF to 10 uF per the TI datasheet application section) at the IN pin close to the device, and provide output capacitance at each downstream port to support hot-plug loads. Route the IN trace from the upstream 5 V rail with adequate width for the summed current of four channels (up to about 2 A aggregate before limiting). Keep the OC flag pull-up resistor tied to a valid logic rail; the open-drain output needs this pull-up to signal the host. Ground return paths for the four channels should converge at a low-impedance node to prevent fault-current-induced ground bounce from corrupting the enable logic.
Three frequent mistakes: (1) Exceeding the 5.5 V maximum input - the switch is rated only to 5.5 V, so unclamped wall-adapter transients require input TVS protection. (2) Ignoring the deglitch period on the OC flag - the fault output is intentionally deglitched, so inrush transients below the deglitch window will not assert OC; firmware must not expect instantaneous fault reporting. (3) Assuming the current limit is a precision threshold - the 0.75 A to 1.25 A band means downstream loads needing guaranteed current above 0.5 A continuous must be budgeted carefully; loads that legitimately draw near the limit may cycle in current-limit and trip thermal protection. Validate worst-case load profiles against the datasheet electrical tables.
Compliance Information
Distributor listing indicates Lead Free Status / RoHS compliant for TPS2054BDR. Not AEC-Q100 qualified; use TPS2054BDR-Q1 for automotive.
