TPS22954-Q1 - 5.7V 5A 14mΩ Load Switch | TI | Automotive
MPN: TPS22954-Q1 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.1 | $1.10 |
| 10 | $0.98 | $9.80 |
| 100 | $0.82 | $82.00 |
| 500 | $0.68 | $340.00 |
| 1,000 | $0.55 | $550.00 |
TPS22954-Q1 Overview
A load switch is a power management IC placed in series with a voltage rail to connect or disconnect power to downstream loads under logic control. Within the power management hierarchy, load switches sit between the supply and the load, complementing voltage regulators by adding switching, inrush control, sequencing, and fault protection. They are essential wherever rails must be turned on softly, sequenced in order, or monitored for faults.
Key features of the TPS22954-Q1 include the 14 mΩ typical on-resistance that minimizes voltage drop and conduction loss at full 5 A load, a wide 0.7 V to 5.7 V operating range covering 1.0 V, 1.8 V, 3.3 V, and 5 V rails, an adjustable rise time via an external capacitor for controlled inrush, and quick output discharge for defined rail states. The device is characterized for operation over the -40°C to +105°C ambient range required by automotive applications.
Technically, the switch uses a low-RON N-channel MOSFET pass element with an integrated charge pump to drive the gate above the rail, delivering very low insertion loss. Controlled turn-on suppresses inrush current peaks that would otherwise cause supply droop, while voltage monitoring and output diagnostics give the system controller visibility into rail health - valuable for functional-safety oriented designs. Both DQC (0.5 mm pitch) and DSQ (0.4 mm pitch) package versions are supported on the TPS22954EVM evaluation module.
Typical applications include automotive ADAS and infotainment power rails, electronic control unit (ECU) subsystem sequencing, power switching for cameras, displays, and communication modules, and general high-current rail switching in industrial systems where a Q100-class device is preferred.
A key design consideration is thermal management: at 5 A and 14 mΩ, conduction losses are roughly 0.35 W (estimated from I²R), so a solid ground-plane pour under the die attach pad is important. Also account for the adjustable rise-time capacitor sizing against your inrush budget.
This page synthesizes distributor pricing, same-package drop-in alternatives, and practical design guidance not found in the manufacturer datasheet.
Drop-in alternatives for TPS22954-Q1 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
TPS22954DQCR
✅ Drop-In📋 Reference alternative (not in catalog)
TPS22953-Q1
✅ Drop-In📋 Reference alternative (not in catalog)
TPS22953DQCR
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
TPS22954-Q1 Maximum Ratings & Electrical Characteristics
| Product Type | Single-channel high-side load switch (N-channel) |
| Input Voltage Range | 0.7 V to 5.7 V |
| Maximum Continuous Current | 5 A |
| On-Resistance (RON) | 14 mΩ |
| Number of Channels | 1 |
| Output Discharge | Yes (quick output discharge) |
| Rise Time Control | Adjustable via external capacitor (CT) |
| Voltage Monitoring / Output Diagnostics | Yes |
| Grade | Automotive (Q1) |
| Package | 10-WSON (DQC, 3x2 mm, 0.5 mm pin pitch) |
| Alternate Package | 10-WSON (DSQ, 0.4 mm pin pitch) |
| Mounting Type | Surface Mount |
| Evaluation Module | TPS22954EVM |
TPS22954-Q1 10-wson (dsq, 0.4 mm pin pitch) Pin Configuration Guide
Pin configuration for TPS22954-Q1 (10-wson (dsq, 0.4 mm pin pitch) package). Pin numbering, functions, and connection diagrams are defined in the manufacturer datasheet. Refer to it for the exact footprint and soldering guidelines.
No detailed pinout data available for TPS22954-Q1.
Refer to the datasheet for full pin configuration.
Typical Applications
TPS22954-Q1 is suitable for 6 applications: Automotive ADAS Camera and Sensor Rail Switching, ECU Power Rail Sequencing, Infotainment Display and Camera Hub Power Switching, Industrial PLC and Factory Automation Rail Switching, Battery-Powered Portable and Telematics Devices, Networking and Communication Module Power Control.
Automotive ADAS Camera and Sensor Rail Switching
The TPS22954-Q1's 0.7 V to 5.7 V input range and 5 A capacity make it a direct fit for switching power to ADAS camera modules, radar front-ends, and sensor clusters from 1.8 V, 3.3 V, or 5 V automotive rails. Its 14 mΩ on-resistance limits voltage drop to roughly 70 mV at full load, preserving regulator accuracy at the sensor. The adjustable rise time (external CT capacitor) suppresses inrush when charging bulk capacitance on long harness runs, while voltage monitoring with output diagnostics lets the ECU verify the rail reached its target - a useful status signal for functional-safety architectures. The Q1 automotive grade and compact 10-WSON DQC package suit the temperature and space constraints of ADAS hardware.
Recommended
ECU Power Rail Sequencing
Electronic control units with multiple microcontrollers and peripherals require orderly power-up: main rails before I/O rails, controlled inrush on each. The TPS22954-Q1 provides a controlled turn-on path per rail with adjustable rise time, so a chain of switches sequenced from the ON pins implements a soft, inrush-limited startup without a dedicated sequencer IC. With 5 A capacity per channel and only 14 mΩ of series resistance, sequencing high-current rails (processors, transceivers) adds minimal conduction loss. The quick output discharge ensures rails collapse to a defined state at shutdown, enabling reliable power cycling. Its automotive -Q1 grade fits under-hood and body-domain ECU environments; the TI E2E community documents TPS2295x family use in such sequencing designs.
Recommended
Infotainment Display and Camera Hub Power Switching
Automotive infotainment head units drive multiple displays and camera deserializer modules that must be individually switched for power budgeting, thermal management, and fault isolation. The TPS22954-Q1 switches 5 V deserializer rails at up to 5 A with only 14 mΩ of series resistance, so per-channel efficiency stays above 99% at moderate loads (estimated from conduction loss I²R). The voltage-monitoring output gives the SoC a rail-OK status, supporting hot-plug detection of displays and cameras. Adjustable rise time prevents voltage droop on shared supply networks during simultaneous rail activation. The 3x2 mm WSON-10 DQC package fits the dense PCB areas near display connectors, and both DQC and DSQ variants are exercised on the TPS22954EVM.
Recommended
Industrial PLC and Factory Automation Rail Switching
Even though this is a -Q1 automotive part, its wide 0.7 V to 5.7 V range, 5 A rating, and Q100-class robustness make it an excellent conservative choice for industrial PLC I/O modules that power sensors, motor-driver logic, and communication interfaces from 3.3 V or 5 V buses. The controlled turn-on avoids nuisance tripping of upstream current-limited supplies when many I/O channels power up at once - the adjustable CT capacitor lets each channel stagger its inrush. The 14 mΩ on-resistance keeps self-heating below roughly 0.35 W at full 5 A load (estimated from I²R), simplifying thermal design in sealed enclosures. Output diagnostics support remote health reporting required in Industry 4.0 architectures.
Recommended
Battery-Powered Portable and Telematics Devices
Telematics units, tracking devices, and portable automotive accessories benefit from the TPS22954-Q1's low series resistance and quick output discharge. When the system controller cuts a peripheral rail to save power, the internal discharge resistor bleeds the output capacitance quickly, so a subsequent turn-on starts from a defined zero-volt state - important for peripherals that do not reset reliably on a slow decay. With 14 mΩ RON, the switch dissipates little even at amp-level loads, preserving battery runtime (0.35 W estimated at 5 A, far less at typical sub-amp telematics loads). The 0.7 V minimum input supports switching sub-1.8 V core rails for low-power SoCs and DRAM.
Recommended
Networking and Communication Module Power Control
Routers, gateways, and wireless modules frequently switch RF PA and modem supply rails under software control. The TPS22954-Q1's 5 A rating covers high-power Wi-Fi and cellular PA rails up to 5.7 V, while 14 mΩ on-resistance avoids adding meaningful series loss to high-current PA supplies - at 2 A the conduction loss is only about 56 mW (estimated from I²R). Adjustable rise time limits inrush when the PA's bulk capacitance charges, protecting upstream converters from transient droop. Voltage monitoring with output diagnostics gives the host controller a per-module rail-OK flag for fault reporting. The compact 3x2 mm WSON-10 DQC package suits the tight layouts typical of communication hardware, and the commercial TPS22954 is the cost-optimized equivalent for non-automotive designs.
Recommended
Recommended Products Summary
Engineering reference data for TPS22954-Q1 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | TPS22954DQCR | TPS22953-Q1 | TPS22953DQCR |
|---|---|---|---|---|
| Package | 10-WSON (DQC, 3x2 mm, 0.5 mm pitch) | 10-WSON (DQC) - same | 10-WSON (DQC/DSQ) - same footprint | 10-WSON (DQC) - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Input Voltage Range | 0.7 V to 5.7 V | 0.7 V to 5.7 V | 0.7 V to 5.7 V | 0.7 V to 5.7 V |
| Max Continuous Current | 5 A | 5 A | 5 A | 5 A |
| Voltage Monitoring / Output Diagnostics | Yes | Yes | Differs - verify in datasheet (per TI E2E) | Differs - verify in datasheet (per TI E2E) |
| Adjustable Rise Time | Yes (CT pin) | Yes (CT pin) | Yes (TPS2295x family controlled turn-on) | Yes (TPS2295x family controlled turn-on) |
| Automotive Grade | Yes (-Q1) | No (commercial) | Yes (-Q1) | No (commercial) |
| Evaluation Module | TPS22954EVM | TPS22954EVM | TPS22954EVM (per TI) | TPS22954EVM (per TI) |
Key Differentiators
- Automotive -Q1 qualification with output diagnostics (vs TPS22954DQCR)
- Documented voltage monitoring and output diagnostics (vs TPS22953-Q1)
- Lowest series loss in its current class (vs TPS22953-Q1)
Design Notes
Estimated: at 5 A and 14 mΩ typical on-resistance, conduction loss is P = I²R = 5² x 0.014 = 0.35 W. The 10-WSON DQC package relies on the die attach pad soldered to the PCB ground pour for heat extraction, so allocate a minimum solid copper area under the pad with multiple thermal vias, per the TI datasheet layout guidance. In enclosed automotive modules, verify junction temperature with your actual worst-case duty-cycle load rather than assuming continuous 5 A.
Place the CT (rise-time) capacitor close to its pin and size it from the TI datasheet rise-time curve against your total downstream capacitance and inrush budget. Keep the switch input close to the upstream bulk capacitor to limit supply inductance during turn-on. The TI E2E forum thread 'TPS22954: Using TPS22953 as replacement' shows a real customer schematic for switching a 3.3 V rail that can serve as a layout reference. Use the TPS22954EVM to validate startup waveforms before committing the PCB.
Do not interchange DSQ (0.4 mm pitch) and DQC (0.5 mm pitch) footprints - although both are 10-pin WSON and supported on the same EVM, the land patterns differ. If qualifying a second source, note the documented feature differences between TPS22953 and TPS22954 flagged in TI's E2E thread; verify output discharge and monitoring behavior on your schematic before approval. Finally, respect the 5.7 V absolute operating ceiling when your upstream supply has transient overshoot.
Compliance Information
Automotive -Q1 grade per TI product page. RoHS/REACH/lead-free status not stated in the retrieved data; verify on the TI.com product page quality section.
