Texas Instruments TPD2S701QDGSRQ1

Overview

TPD2S701QDGSRQ1 from Texas Instruments is an AEC-Q100 qualified automotive USB 2.0 data-line protection IC featuring dual nFET switches, ±8-kV IEC 61000-4-2 contact ESD protection on VD+/VD−, adjustable 0.66–3.8-V overvoltage protection threshold, 200-ns OVP response time, and 1-GHz signal bandwidth. It safeguards USB transceivers in head units and telematics modules against short-to-VBUS faults and system-level ESD events.

For engineers reviewing the TPD2S701QDGSRQ1 datasheet, TPD2S701QDGSRQ1 pinout, TPD2S701QDGSRQ1 application, or TPD2S701QDGSRQ1 equivalent, this device delivers automotive-grade short-to-VBUS isolation, integrated ESD clamping, configurable OVP, thermal shutdown, and fault signaling-critical for robust USB 2.0 interface design in harsh environments.

Technical Context

The TPD2S701QDGSRQ1 implements dual independent nFET data switches with <5-Ω on-resistance and <1-Ω flatness, controlled by an internal oscillator and charge pump. Its overvoltage protection circuitry monitors VD+ and VD− pins and disables both switches within 200 ns when voltage exceeds the resistor-programmable threshold (e.g., 4.5 V typical at VREF = 3.3 V).

It operates in two modes: Mode 0 uses fixed 3.3-V VREF for standard USB VBUS short protection; Mode 1 enables adjustable OVP via external RTOP/RBOT divider on MODE/VREF pins. FLT provides open-drain fault indication with 32-ms recovery after OVP clearance, while EN enables/disables data path operation with 150-µs turn-on time.

Key Specifications

Pinout & Package

TPD2S701QDGSRQ1 is packaged in a 10-pin VSSOP (3.0 mm × 3.0 mm) with exposed thermal pad, optimized for automotive PCB space constraints and thermal dissipation (θJA = 167.3°C/W).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar USB data-line protection applications.

Compared with TPD2S701QDGSRQ1, TPD2EUSB30DRBR lacks OVP response, fault signaling, and AEC-Q100 qualification-making it unsuitable for automotive short-to-VBUS scenarios-while USBLC6-2SC6 offers no active control or protection coordination, limiting its use to static ESD suppression only.

Availability

TPD2S701QDGSRQ1 is available at Aetrix Electronics and suitable for automotive head units, telematics control units, and navigation modules requiring stable component supply with AEC-Q100 assurance and long-term production continuity.

Supply support for TPD2S701QDGSRQ1 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 expertise in high-reliability interface protection solutions.

The TPD2S701-Q1 belongs to TI's automotive-qualified USB interface protection product line, engineered specifically to replace discrete TVS + MOSFET solutions in safety-critical vehicle infotainment and connectivity systems.

FAQ

What is the primary function of the TPD2S701QDGSRQ1 in an automotive USB 2.0 interface?

The TPD2S701QDGSRQ1 functions as an active dual-channel protection IC that combines short-to-VBUS isolation, IEC 61000-4-2 ESD clamping, and configurable overvoltage protection for USB 2.0 D+/D− lines. It uses internal nFET switches to disconnect the transceiver during faults while maintaining signal integrity up to 480 Mbps - a capability confirmed in TI's USB2.0 eye diagram testing (Figure 18). This makes TPD2S701QDGSRQ1 essential for robust USB implementation in automotive head units and telematics modules.

How does the FLT pin on the TPD2S701QDGSRQ1 behave during an overvoltage event?

The FLT pin on the TPD2S701QDGSRQ1 is an open-drain output that asserts low within 12.6–23.4 ms of OVP detection on VD+ or VD−, signaling fault condition to the system MCU. After the overvoltage clears, FLT deasserts automatically after a 32-ms recovery period - verified in Figure 14. This behavior enables firmware-driven fault logging and safe USB re-enumeration. The FLT pin requires an external pull-up resistor and is electrically isolated from VPWR, ensuring reliable signaling even during supply brownouts.

Can the overvoltage protection threshold of the TPD2S701QDGSRQ1 be adjusted, and how is it configured?

Yes, the TPD2S701QDGSRQ1 supports adjustable overvoltage protection via external resistors RTOP and RBOT connected to the MODE and VREF pins. In Mode 1, the OVP threshold equals 1.25 × VREF, where VREF is set by the resistor divider - enabling precise thresholds from 0.66 V to 3.8 V (e.g., 4.14 V typical at VREF = 3.3 V). Configuration is validated in Table 6.7 (VOVP_3.3V) and Figure 19. This adjustability allows TPD2S701QDGSRQ1 to protect non-standard USB rails or legacy transceivers with tighter voltage margins.

What package options are available for the TPD2S701QDGSRQ1, and which one corresponds to the DGSR suffix?

The TPD2S701QDGSRQ1 uses the DGSR package designation, which refers to the 10-pin VSSOP (Very Small Outline Package) with 3.0 mm × 3.0 mm body size and exposed thermal pad - documented in TI's orderable addendum and Pin Configuration section. This package delivers θJA = 167.3°C/W and supports automated optical inspection (AOI) and reflow soldering. The alternate DSK (QFN) variant uses a 2.5 mm × 2.5 mm footprint but is not indicated by the DGSR suffix; TPD2S701QDGSRQ1 specifically denotes the VSSOP version.

Does the TPD2S701QDGSRQ1 require external components for basic operation, and what are the critical ones?

Yes, the TPD2S701QDGSRQ1 requires three critical external components for reliable operation: a 1–10 µF ceramic capacitor on VPWR (per Section 6.5), a 0.3–3 µF capacitor on VREF (for Mode 1 stability), and two precision resistors (RTOP/RBOT) on MODE/VREF to set OVP threshold in Mode 1. In Mode 0, only VPWR and VREF capacitors are mandatory. These values are specified in Tables 6.5 and 6.7, and omitting them risks UVLO instability, slow VREF charging, or inaccurate OVP triggering - directly impacting TPD2S701QDGSRQ1's protection reliability.