Texas Instruments TPS2000CDGKR

Overview

TPS2000CDGKR from Texas Instruments is a 2-A current-limited power-distribution switch in VSSOP-8 (DGK) package, featuring ±20% accurate fixed current limit, 2 µs overcurrent response, reverse current blocking, built-in soft start, and active-low deglitched fault reporting. It operates from 4.5 V to 5.5 V input and is designed for USB port protection in desktop/laptop systems where heavy capacitive loads or short circuits may occur.

For engineers reviewing the TPS2000CDGKR datasheet, TPS2000CDGKR pinout, TPS2000CDGKR application, or TPS2000CDGKR equivalent, this device delivers predictable fault current limiting, thermal shutdown at 135°C (in current limit), undervoltage lockout with 3.75 V threshold, and low R_DS(on) of 72–84 mΩ at 25°C - critical for minimizing voltage drop and power loss in 5-V rail distribution.

Technical Context

The TPS2000CDGKR integrates an N-channel MOSFET power switch with internal charge pump gate drive, enabling full enhancement without external high-side driver circuitry. Its constant-current limiting architecture maintains output current at ~2.9 A (typical) under overload, independent of load impedance, ensuring stable fault behavior across temperature (–40°C to 125°C).

It implements dual-protection logic: fast 2 µs current-limit response precedes thermal shutdown activation (135°C rising threshold, 20°C hysteresis), while deglitched FLT output (6–12 ms filter) prevents false fault assertions during transient surges. UVLO (3.75 V ±0.25 V) and CMOS/TTL-compatible enable input provide robust system-level control.

Key Specifications

Pinout & Package

VSSOP-8 (DGK) package: 3.00 mm × 3.00 mm body, 0.65 mm lead pitch, exposed pad not electrically connected (no PowerPAD). Thermal performance optimized for PCB copper area on GND plane.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar power-distribution switch applications.

Compared with TPS2000CDGKR, TPS2001CDGKR offers identical performance with simplified enable polarity, while TPS2069CDGKR trades 0.5-A capacity for integrated output discharge - making each suitable for distinct system-level trade-offs in control architecture and compliance requirements.

Availability

TPS2000CDGKR is available at Aetrix Electronics and suitable for USB port protection, desktop front-panel hubs, and laptop docking stations requiring stable component supply, long-term lifecycle support, and certified safety compliance.

Supply support for TPS2000CDGKR 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 delivering analog, embedded processing, and connectivity solutions with deep expertise in power management ICs and system-level protection.

The TPS20xxC family was engineered specifically for USB-compliant 5-V power distribution, addressing short-circuit resilience, inrush control, and thermal robustness in space-constrained consumer and computing platforms.

FAQ

What is the maximum continuous output current rating for the TPS2000CDGKR?

The TPS2000CDGKR is rated for 2 A continuous output current under recommended operating conditions (T_A ≤ 85°C, 4.5 V ≤ V_IN ≤ 5.5 V). At higher ambient temperatures, derating applies per thermal data in the datasheet; its R_DS(on) remains ≤98 mΩ up to 85°C, supporting full 2-A operation in typical VSSOP-8 layouts with adequate copper.

Does the TPS2000CDGKR include reverse current blocking functionality?

Yes, the TPS2000CDGKR provides inherent reverse current blocking when disabled: it prevents current flow from OUT to IN, eliminating the need for an external blocking diode. This feature is implemented via the internal N-channel MOSFET structure and gate control logic, verified across –40°C to 125°C junction temperature range with reverse leakage <5 µA at 5.5 V.

What is the purpose of the FLT pin on the TPS2000CDGKR, and how should it be interfaced?

The FLT pin on the TPS2000CDGKR is an active-low, open-drain fault indicator that asserts during overcurrent or overtemperature events. It requires an external pull-up resistor (typically 4.7 kΩ to 3.3 V or 5 V). Its 6–12 ms deglitch filter prevents false triggers from transient inrush; the pin returns high-Z when faults clear or the device exits UVLO or thermal shutdown.

How does the TPS2000CDGKR handle short-circuit conditions, and what is its response time?

The TPS2000CDGKR responds to short circuits in 2 µs by entering constant-current mode at its rated limit (~2.9 A typ), maintaining predictable fault current regardless of load impedance. If the overload persists, thermal shutdown activates at 135°C (min), followed by automatic recovery after cooling 20°C - enabling self-resetting protection without host intervention.

Is the TPS2000CDGKR compliant with USB specifications for port power switching?

Yes, the TPS2000CDGKR meets key USB power delivery requirements: it supports hot-plug inrush control via soft-start, provides per-port overcurrent protection with <2 µs response, enables independent fault reporting via FLT, and maintains VBUS regulation within spec under 2-A load. Its UL Listing (E169910) further validates suitability for certified USB host equipment.