Texas Instruments TPS25810RVCT

Overview

TPS25810RVCT from Texas Instruments is a USB Type-C Downstream Facing Port (DFP) controller with integrated 3-A power switch, compliant with USB Type-C Rev. 1.2 specification. It performs CC-line monitoring for UFP/DFP detection, VBUS sourcing (4.5–6.5 V), VCONN application (4.5–5.5 V), and load-detect signaling (1.95 A threshold), enabling host-side Type-C port control in notebook sleep-charging and docking stations.

For engineers reviewing the TPS25810RVCT datasheet, TPS25810RVCT pinout, TPS25810RVCT application, or TPS25810RVCT equivalent, this device delivers verified USB Type-C DFP functionality-including programmable 1.7/3.4-A current limiting, 34-mΩ high-side MOSFET, <0.7-µA quiescent current when unattached, and UL-listed safety certification-without requiring USB Power Delivery (PD) negotiation.

Technical Context

The TPS25810RVCT implements dual-path analog CC-line sensing to detect UFP attachment, cable orientation (via POL output), and accessory type (AUDIO/DEBUG). Its internal architecture integrates separate power switches for VBUS (IN1→OUT) and VCONN (IN2→CC1/CC2), each with independent current limiting and thermal protection.

It supports three supply domains: IN1 (VBUS input, 4.5–6.5 V), IN2 (VCONN supply, 4.5–5.5 V), and AUX (low-power wake rail, 2.9–5.5 V), enabling S4/S5 hibernate operation. Load-detection logic (LD_DET) triggers at 1.95 A with 125-mA hysteresis, coordinating multi-port power resource allocation.

Key Specifications

Pinout & Package

TPS25810RVCT is housed in a thermally enhanced 20-pin WQFN package (3.0 mm × 4.0 mm) with exposed thermal pad. Pin functions are validated per TI SLVSCR1C datasheet Rev C (July 2017).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar USB Type-C DFP controller applications.

Compared with TUSB8041A and TPS65987D, the TPS25810RVCT provides a focused, cost-optimized solution for fixed 5-V USB Type-C DFP applications-delivering verified CC-line control, integrated 3-A switching, and VCONN support without hub logic or PD stack overhead.

Availability

TPS25810RVCT is available at Aetrix Electronics and suitable for USB Type-C notebook sleep-charging, docking station power management, and wall charger designs requiring stable component supply and production-ready qualification.

Supply support for TPS25810RVCT 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 delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.

The TPS25810RVCT belongs to TI's USB Type-C interface product line, designed specifically to simplify implementation of compliant, cost-effective DFP ports in systems where USB Power Delivery is not required.

FAQ

What is the primary function of the TPS25810RVCT in a USB Type-C system?

The TPS25810RVCT serves as a dedicated Downstream Facing Port (DFP) controller that manages USB Type-C connector behavior-including UFP detection, VBUS sourcing (up to 3 A), VCONN delivery to active cables, and accessory identification-without requiring USB Power Delivery negotiation. Its integrated 34-mΩ power switch and CC-line analog front-end make it ideal for fixed 5-V host ports in notebooks and docks. The TPS25810RVCT operates independently of a host processor for basic attach/detach and current-mode signaling.

Does the TPS25810RVCT support USB Power Delivery (PD)?

No, the TPS25810RVCT does not support USB Power Delivery (PD) communication or variable voltage negotiation. It is designed strictly for USB Type-C Rev. 1.2 DFP applications with fixed 5-V VBUS operation. While it handles all CC-line signaling required for basic Type-C functionality-including Rd/Ra detection, polarity determination, and current-mode advertisement-it lacks a PD PHY, BMC transceiver, or policy engine. For PD-capable designs, TI recommends the TPS65987D instead of the TPS25810RVCT.

How does the TPS25810RVCT manage power during system hibernate (S4/S5) states?

The TPS25810RVCT supports low-power hibernate via its AUX pin, which accepts a 2.9–5.5-V always-alive supply (e.g., 3.3-V system rail). When enabled, it draws just 0.7 µA typ while continuously monitoring CC lines for UFP attachment. Upon detection, the UFP output asserts, allowing the system MCU to wake and enable the main IN1 supply. This Power Wake feature enables true sleep-charging functionality without draining host battery. The TPS25810RVCT maintains full CC-line awareness even when IN1/IN2 are unpowered.

What is the purpose of the LD_DET pin on the TPS25810RVCT?

The LD_DET pin on the TPS25810RVCT is an open-drain output that asserts low when VBUS current exceeds 1.95 A nominal (with 125-mA hysteresis). It is designed for multi-port power coordination-e.g., in a docking station with four Type-C ports sharing a common 5-V rail. By monitoring LD_DET signals from multiple TPS25810RVCT devices, system firmware can dynamically adjust current limits (via CHG/CHG_HI) to prevent rail overload. This enables intelligent power budgeting without external current-sense amplifiers or complex telemetry.

Can the TPS25810RVCT be used with a single 5-V supply, or are multiple supplies required?

The TPS25810RVCT supports flexible supply configurations: it can operate with a single 5-V supply connected to IN1, IN2, and AUX simultaneously, or with three independent rails (IN1 for VBUS, IN2 for VCONN, AUX for hibernate). When using one supply, IN2 must be shorted to IN1 to enable VCONN; AUX may be shorted or left floating if hibernate operation is not needed. The datasheet explicitly permits this configuration, and all internal regulators and references are designed to tolerate the combined loading. No external level-shifting is required for single-rail use of the TPS25810RVCT.