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Texas Instruments TPS254900AIRVCTQ1
- Part No.:
- TPS254900AIRVCTQ1
- Manufacturer:
- Texas Instruments
- Package:
- 20-WFQFN Exposed Pad
- Datasheet:
-
TPS254900AIRVCTQ1.pdf
- Description:
- IC PWR SWITCH N-CHAN 1:1 20WQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,535
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Product details
Overview
TPS254900AIRVCTQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive USB host charger controller and integrated high-side power switch with short-to-battery protection on OUT, DP_IN, and DM_IN pins. It features a 45-mΩ (typ) RDS(on), 3.2-A continuous output current, ±5% VBUS cable compensation accuracy at the connector, and supports USB BC 1.2 CDP/SDP modes in automotive charging ports.
For engineers reviewing the TPS254900AIRVCTQ1 datasheet, TPS254900AIRVCTQ1 pinout, TPS254900AIRVCTQ1 application, or TPS254900AIRVCTQ1 equivalent, key selection considerations include short-to-battery fault response time (0.3 µs for OUT OVP), dual adjustable current limits (via ILIM_HI/ILIM_LO resistors), IEC 61000-4-2 ±8-kV contact ESD rating on data lines, and thermal shutdown thresholds at 135°C (current-limit mode) and 155°C (full shutdown).
Technical Context
The TPS254900AIRVCTQ1 integrates a high-bandwidth analog switch (940 MHz –3 dB bandwidth, <6.5 Ω on-resistance) for D+/D– signal routing, coupled with independent overvoltage protection circuitry on DP_IN/DM_IN (trip threshold 3.9 V typ) and OUT (dual thresholds: 6.0 V low / 6.95 V high). Its charge-pump-driven N-channel MOSFET gate driver enables rapid turnoff (<2 µs short-circuit response) during short-to-battery events.
It implements dynamic port-power management via two externally set current limits and real-time load monitoring through the IMON pin (333 µA/A typical scaling), enabling upstream DC-DC regulation feedback. The device operates across 4.5–6.5 V input with a 3.5-V UVLO to sustain functionality during automotive start-stop cycles.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input voltage range | 4.5 V to 6.5 V - supports wide automotive battery rail including cold-crank and load-dump transients |
| RDS(on) | 45 mΩ (typ) - minimizes conduction loss and thermal rise at 3.2-A continuous load |
| Continuous output current | 3.2 A - rated for sustained operation from –40°C to +85°C ambient |
| Cable compensation accuracy | ±5% at USB connector - maintains stable 5-V VBUS under long-cable, high-current charging |
| Data line ESD rating | ±8 kV contact / ±15 kV air (IEC 61000-4-2 Level 4) - eliminates need for external TVS on DP/DM |
| Short-to-battery withstand | 18 V on OUT, DP_IN, DM_IN - protects upstream processor, hub, and DC-DC converter during fault |
| Thermal shutdown | 135°C (current-limit mode), 155°C (full shutdown) - prevents latch-up and ensures system-level fault containment |
Pinout & Package
TPS254900AIRVCTQ1 is housed in a thermally enhanced 20-pin WQFN package (3.0 mm × 4.0 mm, 0.5-mm pitch) with exposed thermal pad for PCB heat dissipation. Junction-to-board thermal resistance is 11.9°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN (pins 2,3) | Power input | Accepts 4.5–6.5 V supply; requires local 0.1-µF ceramic decoupling |
| OUT (pins 15,16) | Switched power output | Drives USB VBUS; includes short-to-battery protection and 5.65–7.3 V OVP thresholds |
| DP_IN / DM_IN (pins 13,14) | Downstream data inputs | Connect to USB connector D+/D–; rated for ±18 V fault and IEC ESD protection |
| DP_OUT / DM_OUT (pins 5,4) | Upstream data outputs | Interface to host controller; 940-MHz bandwidth, <6.5 Ω on-resistance, <0.15 Ω mismatch |
| ILIM_HI / ILIM_LO (pins 20,19) | Current limit programming | Set high/low current thresholds (e.g., 2.59 A / 650 mA) using external resistors |
| IMON (pin 1) | Analog current monitor | Sources 333 µA/A scaled current; resistor-to-GND yields linear voltage proportional to load |
| EN (pin 7) | Enable control | Active-high logic input; disables power and signal switches when low |
| FAULT / STATUS (pins 18,17) | Fault and load-detect indicators | Open-drain outputs; FAULT asserts on OVP/OC/OT; STATUS asserts on >650 mA load detect |
Key Features
| Feature | Design Value |
|---|---|
| Dual programmable current limits | Enables dynamic port-power sharing in multi-port systems without upstream supply overload |
| VBUS cable compensation (CS pin) | Actively adjusts output voltage to counteract IR drop in long USB cables up to 3.2 A |
| Short-to-battery protection (18 V) | Prevents damage to upstream DC-DC converters and host processors during wiring faults |
| Integrated USB BC 1.2 CDP mode | Supports 1.5-A fast charging while maintaining full USB 2.0 data communication |
| Real-time analog current monitor (IMON) | Provides system-level load visibility for thermal derating, power budgeting, and fault diagnostics |
Applications
| Automotive Front/Rear USB Charging Port | Automotive Infotainment USB Hub Protection |
|---|---|
Use Scenario: Dual USB-A ports in center console powered from 12-V vehicle bus with long harness runs. IC Role / Device Role / Timing Role: USB host charger controller and protected power switch managing VBUS delivery, D+/D– signal routing, and fault isolation. Use Value: Maintains 5.0 V ±5% at connector under 3.2-A load despite 300-mV cable drop; survives 18-V shorts to battery during service or assembly errors. | Use Scenario: USB hub in head unit supplying power and data to connected mobile devices and accessories. IC Role / Device Role / Timing Role: Fault-isolated power switch with integrated BC 1.2 CDP detection and data-line ESD hardening. Use Value: Enables simultaneous charging and data sync without external TVS diodes; detects load presence and reports via STATUS pin for OS-level power management. |
| Automotive Telematics Module USB Interface | ADAS Camera Power & Data Isolation |
Use Scenario: Cellular-connected telematics control unit requiring robust USB OTG support for firmware updates and diagnostics. IC Role / Device Role / Timing Role: Protected USB power switch with short-to-battery immunity and IEC-rated data-line ESD protection. Use Value: Eliminates field failures from DP/DM line shorts to 12-V battery; meets AEC-Q100 Grade 1 (–40°C to +125°C) for under-hood placement. | Use Scenario: USB-powered rear-view or surround-view camera module mounted near bumper with exposed cabling. IC Role / Device Role / Timing Role: Fault-tolerant USB interface providing VBUS switching, data path integrity, and overvoltage clamping. Use Value: Withstands 18-V transients on OUT/DP/DM during jump-start or alternator surge; provides <2 µs OVP response to prevent sensor IC latch-up. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar USB charging-port protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS254900RVCQ1 | Same die, identical electrical specs; differs only in tape-and-reel packaging (RVC vs RVCT) | No functional difference; RVC is standard reel, RVCT is carrier tape variant for automated placement | Select TPS254900AIRVCTQ1 for carrier-tape compatibility with high-speed SMT lines requiring tight tape tension control. |
| TPS254600RVCQ1 | Lacks short-to-battery protection on DP_IN/DM_IN; no cable compensation; lower 2.5-A current rating | Suitable for cost-sensitive non-critical ports where fault robustness is secondary to BOM reduction | Choose TPS254600RVCQ1 only if short-to-battery immunity and ±5% VBUS regulation are not required per system safety analysis. |
Compared with TPS254900RVCQ1, TPS254900AIRVCTQ1 offers identical performance in carrier-tape format for optimized pick-and-place yield; versus TPS254600RVCQ1, it adds critical 18-V fault tolerance and precision cable compensation essential for premium automotive charging systems.
Availability
TPS254900AIRVCTQ1 is available at Aetrix Electronics and suitable for automotive front/rear USB charging ports, infotainment hub protection, and telematics module interfaces requiring stable component supply, AEC-Q100 compliance, and short-to-battery fault resilience.
Supply support for TPS254900AIRVCTQ1 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 automotive-grade power management solutions.
The TPS254900A-Q1 belongs to TI's automotive USB power-switch portfolio, designed specifically for robust, standards-compliant USB charging in vehicles with stringent safety, reliability, and electromagnetic immunity requirements.
FAQ
What is the maximum continuous output current rating for the TPS254900AIRVCTQ1?
The TPS254900AIRVCTQ1 is rated for 3.2-A continuous output current under –40°C to +85°C ambient conditions. Operation above this level is possible but degrades lifetime per TI's datasheet guidance. The device enters constant-current limiting when load exceeds the threshold set by ILIM_HI or ILIM_LO resistors, ensuring safe thermal operation.
Does the TPS254900AIRVCTQ1 provide protection against short circuits to the vehicle battery rail?
Yes, the TPS254900AIRVCTQ1 provides short-to-battery protection on three pins: OUT, DP_IN, and DM_IN. Each withstands up to 18 V continuously and triggers immediate shutdown within 0.3 µs (OUT) or 5 µs (DP_IN/DM_IN) upon overvoltage detection. This protects upstream DC-DC converters, processors, and data lines from damage during wiring faults or service errors.
How does the TPS254900AIRVCTQ1 maintain stable VBUS voltage across long USB cables?
The TPS254900AIRVCTQ1 uses its CS (cable compensation) pin to sink a current proportional to load (262 µA typ at 3.2 A), which drives the feedback node of an upstream DC-DC converter. This closed-loop compensation actively raises the input supply voltage to offset IR drop in the cable, delivering ±5% regulated 5-V VBUS at the USB connector even under full 3.2-A load.
Can the TPS254900AIRVCTQ1 support USB BC 1.2 fast-charging protocols?
Yes, the TPS254900AIRVCTQ1 natively supports USB Battery Charging Specification 1.2 CDP (Charging Downstream Port) mode. When CTL1 and CTL2 are both high, it configures D+/D– lines to negotiate up to 1.5-A charging while maintaining full USB 2.0 data communication - enabling simultaneous fast charging and data transfer in automotive infotainment systems.
What is the purpose of the IMON pin on the TPS254900AIRVCTQ1?
IMON is a current-monitor output that sources a precise 333 µA/A (typ) scaled replica of the load current flowing through the internal FET. By connecting a resistor from IMON to GND, designers generate a linear analog voltage (e.g., 333 mV at 1 A) for real-time system-level monitoring, dynamic power budgeting, thermal derating, or diagnostic logging - all without breaking the power path.
TPS254900AIRVCTQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 20-WFQFN Exposed Pad
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Switch Type:
- USB Switch
- Number of Outputs:
- 1
- Ratio - Input:Output:
- 1:1
- Output Configuration:
- Low Side
- Output Type:
- N-Channel
- Interface:
- -
- Voltage - Load:
- 0.5V ~ 0.7V
- Voltage - Supply (Vcc/Vdd):
- 4.5V ~ 6.5V
- Current - Output (Max):
- 3.2A
- Rds On (Typ):
- -
- Input Type:
- Differential
- Features:
- -
- Fault Protection:
- Current Limiting, Over Voltage, UVLO
- Operating Temperature:
- -40°C ~ 85°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-WQFN (4x3)
TPS254900AIRVCTQ1 FAQ
1.How can I place an order for TPS254900AIRVCTQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS254900AIRVCTQ1 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 TPS254900AIRVCTQ1 reliable?
The price and inventory of TPS254900AIRVCTQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS254900AIRVCTQ1 is usually 5 days.
3.What payment methods are accepted for TPS254900AIRVCTQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS254900AIRVCTQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS254900AIRVCTQ1?
TPS254900AIRVCTQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS254900AIRVCTQ1 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 TPS254900AIRVCTQ1?
For technical support, including TPS254900AIRVCTQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS254900AIRVCTQ1 requirements.
6.How does Aetrix verify that TPS254900AIRVCTQ1 is sourced from the original manufacturer or authorized distributors?
All TPS254900AIRVCTQ1 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 TPS254900AIRVCTQ1 meets industry standards.
7.What is the process for return or replacement of TPS254900AIRVCTQ1?
All TPS254900AIRVCTQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS254900AIRVCTQ1, 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 TPS254900AIRVCTQ1 part is unused and in its original packaging.
Return procedure for TPS254900AIRVCTQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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