Texas Instruments TPD3S014DBVR

Overview

TPD3S014DBVR from Texas Instruments is a USB 3.0 host-port protection IC integrating a 0.5-A current-limited load switch and dual-channel IEC 61000-4-2 ±12-kV contact / ±15-kV air-gap ESD protection diode array for D+ and D– lines. It features 110-mΩ typical R_DS(on), 2-μs short-circuit response, and reverse current blocking - deployed in laptop USB ports, set-top boxes, and point-of-sale terminals to safeguard 5-V power rails and high-speed data lines.

For engineers reviewing the TPD3S014DBVR datasheet, TPD3S014DBVR pinout, TPD3S014DBVR application, or TPD3S014DBVR equivalent, key selection criteria include its fixed 0.85-A typical current limit, integrated output discharge (456-Ω pull-down), –40°C to 85°C ambient operation, and DBV (SOT-23-6) package compatibility with space-constrained USB interface layouts.

Technical Context

The TPD3S014DBVR implements an N-channel MOSFET-based load switch with internal charge pump gate drive, enabling low R_DS(on) while maintaining 5-V regulation under load. Its UVLO threshold (3.77 V) and hysteresis (0.14 V) prevent oscillation during input droop, and thermal shutdown (135°C trip, 20°C hysteresis) enables auto-restart after overload clearance.

ESD protection is implemented via bidirectional TVS diodes on D1/D2 pins, rated for ±12-kV contact/±15-kV air-gap per IEC 61000-4-2, with <0.02-pF differential capacitance and 0.2-Ω dynamic on-resistance - preserving USB 3.0 signal integrity without compromising ESD robustness.

Key Specifications

Pinout & Package

TPD3S014DBVR is housed in a 6-pin SOT-23 (DBV) package measuring 2.90 mm × 2.80 mm × 1.45 mm, optimized for compact USB layout routing with exposed pad not present and no thermal slug.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar USB port protection applications.

Compared with TPD3S044DBVR, TPD3S014DBVR offers tighter current limiting for lower-power USB ports while sharing identical ESD performance and footprint; versus TPD2EUSB30DRBR, it adds critical power-switch functionality but trades off some signal bandwidth due to higher integration density.

Availability

TPD3S014DBVR is available at Aetrix Electronics and suitable for laptop USB interfaces, set-top box peripheral ports, and electronic point-of-sale terminals requiring stable component supply across multi-year production cycles.

Supply support for TPD3S014DBVR 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 connectivity technologies, with decades of expertise in USB interface solutions and system-level protection ICs.

The TPD3S0x4 product line was designed specifically for USB host port protection - integrating load switching and ESD suppression in one DBV package to simplify layout, reduce bill-of-materials, and ensure compliance with IEC 61000-4-2 and USB power delivery requirements.

FAQ

What is the maximum continuous output current supported by the TPD3S014DBVR?

The TPD3S014DBVR supports a maximum continuous output current of 0.5 A at ambient temperatures up to 85°C. This rating is validated across the full operating junction temperature range (–40°C to 125°C) and accounts for thermal derating in enclosed systems. The device enters constant-current limiting at 0.85 A (typical), making TPD3S014DBVR ideal for USB host ports powering low-power peripherals without requiring external current-sense circuitry.

Does the TPD3S014DBVR provide reverse current blocking when disabled?

Yes, the TPD3S014DBVR provides active reverse current blocking when disabled or in UVLO state. Its internal N-channel MOSFET architecture prevents backflow from the OUT pin to the IN pin, eliminating the need for an external blocking diode in the 5-V power path. This feature ensures system-level safety during hot-plug events and maintains isolation between downstream USB loads and upstream power sources when the TPD3S014DBVR is inactive.

How does the TPD3S014DBVR handle ESD events on the D+ and D– lines?

The TPD3S014DBVR integrates bidirectional TVS diodes on D1 (D+) and D2 (D–) pins, rated for ±12-kV contact and ±15-kV air-gap discharges per IEC 61000-4-2 Level 4. These diodes clamp transient voltages to safe levels while maintaining ultra-low differential capacitance (0.02 pF) and dynamic on-resistance (0.2 Ω), ensuring minimal distortion of USB 3.0 high-speed data signals and reliable operation across thousands of ESD events.

What is the purpose of the output discharge function in the TPD3S014DBVR?

When the TPD3S014DBVR is disabled or enters UVLO, its integrated 456-Ω (typical) output discharge resistor actively pulls the OUT pin to GND, dissipating stored charge from downstream capacitors (e.g., 150-µF bulk caps). This prevents floating voltage states that could cause latch-up or unintended peripheral behavior during power sequencing, and eliminates the need for external bleed resistors in USB port designs.

Can the TPD3S014DBVR be used in USB 3.0 applications without signal integrity degradation?

Yes, the TPD3S014DBVR is explicitly qualified for USB 3.0 applications. Its D+/D– pins exhibit only 0.02-pF differential capacitance and 1.4-pF line-to-ground capacitance at 1 MHz, well below the 1.5-pF USB 3.0 specification limit. Combined with 0.2-Ω dynamic on-resistance and matched D1/D2 characteristics, it preserves differential impedance, minimizes insertion loss, and avoids eye diagram closure - verified in TI's USB 3.0 compliance test reports for TPD3S014DBVR.