Texas Instruments TPS2514AQDBVTQ1

Overview

TPS2514AQDBVTQ1 from Texas Instruments is a single-channel automotive-grade USB Dedicated Charging Port (DCP) controller in SOT-23-6 package, supporting BC1.2 shorted mode (≤200 Ω), Divider 3 mode (2.7 V / 2.7 V), and 1.2 V / 1.2 V charging signatures. It operates from 4.5 V to 5.5 V, delivers ±10 mA I/O current per data line, and integrates undervoltage lockout (4.1 V turn-on) for reliable automotive USB charging port implementation in vehicle power systems.

For engineers reviewing the TPS2514AQDBVTQ1 datasheet, TPS2514AQDBVTQ1 pinout, TPS2514AQDBVTQ1 application, or TPS2514AQDBVTQ1 equivalent, key selection criteria include DCP auto-detect capability across three industry-standard charging protocols, AEC-Q100 qualification (H2/C5 ESD), thermal performance (RθJA = 179.9 °C/W), and compatibility with TI's TPS2557-Q1 USB power switch for overcurrent protection in single-port designs.

Technical Context

The TPS2514AQDBVTQ1 implements a fully autonomous DCP detection and signature generation engine that monitors DP1/DM1 voltage levels to select among three mutually exclusive output modes: shorted (D+/D− tied via ≤200 Ω), Divider 3 (2.7 V on both lines), or 1.2 V (1.2 V on both lines). Its internal UVLO circuit disables all outputs until VIN reaches 4.1 V, with 100 mV hysteresis to prevent oscillation during input transients.

No external configuration pins or host control are required - mode selection is entirely analog and self-contained. The device does not regulate VBUS power; it solely conditions the USB data lines to signal compliant portable devices (smartphones, tablets) that a high-current dedicated charging port is present, enabling up to 1.5 A draw per port per BC1.2 specification.

Key Specifications

Pinout & Package

SOT-23-6 (DBV) package, 2.90 mm × 1.60 mm body size, PowerPad-less, RoHS-compliant, MSL Level-1.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar USB dedicated charging port controller applications.

Compared with TPS2513AQDBVTQ1, the TPS2514AQDBVTQ1 saves board space and reduces routing complexity for single-port systems, while compared with NCP380LSN3T2G, it adds critical 1.2 V mode and AEC-Q100 qualification - making it the only choice for automotive-grade universal DCP support.

Availability

TPS2514AQDBVTQ1 is available at Aetrix Electronics and suitable for automotive infotainment systems, dashboard-mounted car chargers, and telematics units requiring stable component supply, AEC-Q100 compliance, and universal USB fast-charge compatibility.

Supply support for TPS2514AQDBVTQ1 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 company specializing in analog and embedded processing technologies, with leadership in automotive, industrial, and power management ICs.

The TPS251x-Q1 product line delivers AEC-Q100-qualified USB DCP controllers designed specifically for automotive USB charging infrastructure - enabling robust, standards-compliant, and maintenance-free power delivery to mobile devices in vehicles.

FAQ

What charging protocols does the TPS2514AQDBVTQ1 support?

The TPS2514AQDBVTQ1 supports three USB charging protocols: BC1.2 shorted mode (D+/D− ≤200 Ω), Divider 3 mode (2.7 V on both DP1 and DM1), and 1.2 V / 1.2 V mode (1.2 V on both lines). It automatically detects and selects the appropriate mode based on connected device behavior - no external configuration is needed. This ensures compatibility with smartphones, tablets, and personal media players adhering to USB Battery Charging Specification Revision 1.2 and YD/T 1591-2009 standards. The TPS2514AQDBVTQ1 does not support CDP or SDP enumeration.

Does the TPS2514AQDBVTQ1 provide overcurrent protection for the USB VBUS line?

No, the TPS2514AQDBVTQ1 does not provide overcurrent protection or VBUS switching. It is a pure data-line conditioning IC that only drives DP1 and DM1 to generate DCP signatures. For overcurrent protection, TI recommends pairing the TPS2514AQDBVTQ1 with the TPS2557-Q1 USB power switch - which handles VBUS current limiting, fault reporting, and thermal shutdown. The TPS2514AQDBVTQ1's IN pin must be supplied from the same 4.5–5.5 V rail feeding the TPS2557-Q1's input.

Can the TPS2514AQDBVTQ1 be used in non-automotive applications?

Yes, the TPS2514AQDBVTQ1 can be used in non-automotive applications such as wall adapters, USB hubs, or industrial docking stations - but its AEC-Q100 qualification, extended temperature range (–40 °C to +125 °C), and automotive-grade ESD robustness make it especially suited for demanding environments. Its 4.5–5.5 V operating range aligns with regulated 5 V supplies, and its low 220 µA quiescent current benefits battery-backed or energy-conscious designs. However, cost-sensitive consumer applications may consider non-automotive alternatives unless the enhanced reliability is required.

What is the purpose of the N/C pins on the TPS2514AQDBVTQ1?

Pins 3 and 4 of the TPS2514AQDBVTQ1 are designated No-Connect (N/C) and are internally unconnected. They may be left floating or tied to GND with no effect on device operation, thermal performance, or signal integrity. This pinout differs from the dual-channel TPS2513AQDBVTQ1 (which uses those pins for DP2/DM2), allowing TI to reuse the SOT-23-6 package across both variants while maintaining functional isolation. No decoupling, routing, or grounding is required for these pins beyond standard PCB manufacturing practices.

How does the TPS2514AQDBVTQ1 handle input voltage transients during automotive cold-crank?

The TPS2514AQDBVTQ1 incorporates an undervoltage lockout (UVLO) circuit with a 4.1 V turn-on threshold and 100 mV hysteresis. During cold-crank events where the vehicle battery dips below 4.5 V, the device disables DP1 and DM1 outputs until VIN rises above 4.1 V - preventing erroneous or unstable DCP signaling. Once enabled, it maintains valid output voltages (e.g., 2.7 V ±0.13 V) across the full 4.5–5.5 V range. Its AEC-Q100 qualification confirms operation under repeated cold-crank stress, and the 0.1 µF IN-to-GND capacitor provides local transient suppression per TI layout guidelines.