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Texas Instruments TPS25840QWRHBTQ1
- Part No.:
- TPS25840QWRHBTQ1
- Manufacturer:
- Texas Instruments
- Category:
- Power Management - Specialized
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
TPS25840QWRHBTQ1.pdf
- Description:
- IC POWER MANAGEMENT
- Quantity:
- Payment:
- Shipping:
Inventory:5,750
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Product details
Overview
TPS25840QWRHBTQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive USB Type-A BC1.2 charging IC integrating a synchronous buck regulator (4.5–36 V input, 5.1 V ±1% output, 3.5 A), cable droop compensation up to 1.5 V, and high-bandwidth DP/DM analog switches with ±8-kV contact ESD rating. It serves as the primary USB power delivery and data pass-through controller in infotainment head units.
For engineers reviewing the TPS25840QWRHBTQ1 datasheet, TPS25840QWRHBTQ1 pinout, TPS25840QWRHBTQ1 application, or TPS25840QWRHBTQ1 equivalent, this page delivers verified technical context, validated pin functions, confirmed automotive-grade protection features, and real-world USB charging system design implications - all specific to the TPS25840QWRHBTQ1 variant.
Technical Context
The TPS25840QWRHBTQ1 implements current-mode control with internal compensation and supports adjustable switching frequency (300 kHz–2.2 MHz) via RT/SYNC pin or external clock synchronization. Its buck stage integrates high-side and low-side MOSFETs with RDS(on) of 40–75 mΩ (HS) and 35–68 mΩ (LS) across –40°C to +150°C.
It embeds dual-function USB interface logic: BC1.2 CDP/SDP detection circuitry and high-bandwidth analog switches (RDS(on) = 3.4–7.7 Ω, BW = 800 MHz) on DP/DM paths, plus dedicated short-to-VBAT protection on VBUS, DP_IN, and DM_IN pins - a capability exclusive to the TPS25840-Q1 family versus TPS25842-Q1.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input voltage range | 4.5 V to 36 V - supports full automotive battery range including cold-crank (4.5 V) and load-dump (36 V) transients. |
| Output voltage | 5.1 V ±1% - ensures USB-IF-compliant VBUS accuracy for reliable device enumeration and charging. |
| Max output current | 3.5 A - delivers full USB BC1.2 CDP power (5 V/1.5 A) plus headroom for cable loss compensation and peak loads. |
| Cable compensation range | Up to 1.5 V - linearly adjusts buck output to maintain constant VBUS at portable device connector under heavy current. |
| Switching frequency | 300 kHz to 2.2 MHz - enables optimization for efficiency (≤400 kHz) or EMI reduction (≥2.1 MHz to avoid AM band). |
| ESD rating (DP/DM) | ±8-kV contact / ±15-kV air per IEC 61000-4-2 - protects data lines against real-world automotive electrostatic events. |
| Short-to-VBAT protection | On VBUS, DP_IN, DM_IN - withstands up to 18 V on these pins, enabling robust operation in 12 V/24 V systems with fault tolerance. |
Pinout & Package
TPS25840QWRHBTQ1 uses a 32-pin VQFN package (RHB0032AA) with 5.00 mm × 5.00 mm body size and wettable flanks for automated optical inspection. Thermal pad is electrically connected to PGND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN (1,2,3) | Power input | Primary buck regulator input; requires local high-quality bypass capacitors to PGND for stability under transient loads. |
| SW (28–31) | Power switch node | Connection point for external inductor; ties internally to HS-FET source and LS-FET drain - critical for EMI layout. |
| CSN/OUT (13) | Buck output & current sense negative | Regulated 5.1 V output and return path for current-sense amplifier; directly connects to USB VBUS trace. |
| CSP (14) | Current sense positive | Sense input for buck current limit and cable compensation; forms differential pair with CSN/OUT across RSNS. |
| DP_IN (18), DM_IN (17) | USB upstream data inputs | Accept DP/DM signals from Type-A connector; include short-to-VBAT protection and IEC 61000-4-2 ESD clamps. |
| DP_OUT (7), DM_OUT (8) | USB downstream data outputs | Drive DP/DM to host controller; feature 800 MHz bandwidth and <0.15 Ω resistance mismatch for signal integrity. |
| FAULT (24) | Fault indicator | Active-low open-drain output asserting during overcurrent, overvoltage, thermal shutdown, or Dx short faults. |
| BUCK_ST (23) | Buck startup status | Active-low open-drain flag indicating buck regulation is active and DP/DM switches are enabled. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated VBUS short-to-VBAT protection | Enables safe operation when VBUS is exposed to battery rail faults - eliminates need for external TVS on VBUS line. |
| User-programmable cable droop compensation | Adjusts output voltage linearly with load current using IMON resistor, maintaining stable VBUS at device end despite >1 V wiring drop. |
| Two-threshold current limit architecture | Supports either average-current limiting (via RILIMIT) or external NFET-based overcurrent protection - preserves 5 V supply to other loads during USB port fault. |
| High-bandwidth DP/DM analog switches | 800 MHz bandwidth and <7.7 Ω on-resistance ensure minimal USB 2.0 signal degradation (<1 dB insertion loss at 480 MHz). |
| Functional safety documentation support | Includes FIT rate, failure mode analysis, and diagnostic coverage guidance - accelerates ISO 26262 ASIL-B system-level certification. |
Applications
| Automotive Infotainment Head Unit | USB Media Hub |
|---|---|
Use Scenario: Central display unit providing dual USB-A ports for smartphone mirroring and media playback in vehicles. IC Role / Device Role / Timing Role: Primary USB power delivery controller and DP/DM signal pass-through switch with BC1.2 charging negotiation. Use Value: Maintains 5.1 V ±1% VBUS at phone connector under 3 A load, enabling full-speed charging while preserving USB 2.0 data integrity up to 480 Mbps. |
Use Scenario: Rear-seat entertainment hub with four USB-A ports supporting simultaneous charging and data transfer. IC Role / Device Role / Timing Role: Buck regulator + USB analog switch IC managing power and signal routing for multiple downstream devices. Use Value: Cable droop compensation ensures consistent VBUS across long harness runs; short-to-VBAT protection prevents latch-up during battery jump-start events. |
| Automotive USB Charger Port | Telematics Control Unit (TCU) USB Interface |
Use Scenario: Dedicated 12 V cigarette-lighter-to-USB-A adapter module delivering fast charging in passenger compartments. IC Role / Device Role / Timing Role: Standalone USB power IC converting wide-input automotive supply to regulated 5 V with BC1.2 handshake. Use Value: 36 V max input rating handles load-dump transients; FPWM with spread-spectrum dithering reduces conducted EMI in compact enclosure. |
Use Scenario: Cellular-connected TCU requiring USB OTG support for firmware updates and diagnostics via service tools. IC Role / Device Role / Timing Role: USB client-mode controller enabling host-initiated firmware download through DP/DM pass-through. Use Value: Client mode allows secure system update without external USB host; BUCK_ST flag synchronizes software enable with power rail readiness. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar USB charging regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS25842QWRHBTQ1 | Lacks DP_IN/DM_IN short-to-VBAT protection; same package, pinout, and buck specs. | Not suitable where VBUS or data lines may be exposed to 12 V/24 V battery faults (e.g., exposed rear-seat ports). | Select TPS25842QWRHBTQ1 only if short-to-battery protection is unnecessary and cost reduction is prioritized. |
| TPS65988ARSLR | USB-C PD controller with integrated 5 V/3 A buck; supports USB PD 3.0, not BC1.2; 40-pin VQFN. | Requires USB-C connector redesign; adds PD negotiation but removes BC1.2 legacy compatibility. | Choose TPS65988ARSLR only when upgrading to USB-C and needing programmable power profiles beyond 5 V/3.5 A. |
Compared with TPS25840QWRHBTQ1, TPS25842QWRHBTQ1 omits critical short-to-VBAT protection on data lines - reducing fault resilience in harsh automotive environments - while TPS65988ARSLR shifts architecture to USB-C PD with higher complexity and no BC1.2 support, making it unsuitable for legacy Type-A systems.
Availability
TPS25840QWRHBTQ1 is available at Aetrix Electronics and suitable for automotive infotainment, USB media hubs, and telematics control units requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TPS25840QWRHBTQ1 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 electronics, with decades of AEC-Q100 qualification expertise and functional safety infrastructure.
The TPS2584x-Q1 product line was designed specifically for automotive USB power delivery - integrating buck regulation, BC1.2 compliance, cable compensation, and fault-hardened data switching into a single AEC-Q100 Grade 1 package.
FAQ
What is the maximum input voltage rating for the TPS25840QWRHBTQ1?
The TPS25840QWRHBTQ1 supports an absolute maximum input voltage of 40 V on the IN pin, with recommended operating range from 4.5 V to 36 V. This accommodates automotive cold-crank (down to 4.5 V) and load-dump (up to 36 V) conditions while maintaining regulation and protection functionality throughout.
Does the TPS25840QWRHBTQ1 support USB BC1.2 charging modes?
Yes, the TPS25840QWRHBTQ1 fully supports USB Battery Charging Specification v1.2, including SDP (Standard Downstream Port) and CDP (Charging Downstream Port) detection and electrical signature generation. It identifies connected devices and configures appropriate current limits without requiring external microcontroller intervention.
How does cable droop compensation work in the TPS25840QWRHBTQ1?
The TPS25840QWRHBTQ1 uses a precision current-sense amplifier (CSP–CSN/OUT) and IMON resistor to generate a compensation voltage that linearly increases the buck output voltage with load current. This counteracts voltage drop across automotive cabling, maintaining ~5.1 V at the connected device's USB port even under 3.5 A load.
What protection features are unique to the TPS25840QWRHBTQ1 versus TPS25842QWRHBTQ1?
The TPS25840QWRHBTQ1 uniquely provides short-to-VBAT protection on DP_IN and DM_IN pins - allowing those data lines to withstand up to 18 V - whereas the TPS25842QWRHBTQ1 lacks this feature. Both share VBUS short-to-VBAT protection, but only TPS25840QWRHBTQ1 hardens the full USB signal path against battery-rail faults.
Can the TPS25840QWRHBTQ1 operate in forced PWM (FPWM) mode?
Yes, the TPS25840QWRHBTQ1 supports forced PWM operation with spread-spectrum dithering to reduce EMI peaks. FPWM ensures continuous switching regardless of load, eliminating audible noise and improving transient response - critical for automotive audio-sensitive environments.
TPS25840QWRHBTQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 32-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- USB Protection
- Current - Supply:
- 700µA
- Voltage - Supply:
- 4.5V ~ 36V
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 32-VQFN (5x5)
TPS25840QWRHBTQ1 FAQ
1.How can I place an order for TPS25840QWRHBTQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS25840QWRHBTQ1 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 TPS25840QWRHBTQ1 reliable?
The price and inventory of TPS25840QWRHBTQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS25840QWRHBTQ1 is usually 5 days.
3.What payment methods are accepted for TPS25840QWRHBTQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS25840QWRHBTQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS25840QWRHBTQ1?
TPS25840QWRHBTQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS25840QWRHBTQ1 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 TPS25840QWRHBTQ1?
For technical support, including TPS25840QWRHBTQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS25840QWRHBTQ1 requirements.
6.How does Aetrix verify that TPS25840QWRHBTQ1 is sourced from the original manufacturer or authorized distributors?
All TPS25840QWRHBTQ1 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 TPS25840QWRHBTQ1 meets industry standards.
7.What is the process for return or replacement of TPS25840QWRHBTQ1?
All TPS25840QWRHBTQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS25840QWRHBTQ1, 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 TPS25840QWRHBTQ1 part is unused and in its original packaging.
Return procedure for TPS25840QWRHBTQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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