Texas Instruments TPS2001CDGKR

Overview

TPS2001CDGKR from Texas Instruments is a 2-A current-limited power-distribution switch in VSSOP-8 (DGK) package, designed for 5-V USB and peripheral power rail protection. It features ±20% accurate fixed current limit, 2 µs overcurrent response, reverse current blocking, built-in soft start, and active-low deglitched fault reporting - enabling robust short-circuit and heavy capacitive load handling in desktop/laptop USB ports.

For engineers reviewing the TPS2001CDGKR datasheet, TPS2001CDGKR pinout, TPS2001CDGKR application, or TPS2001CDGKR equivalent, this device delivers predictable constant-current limiting under overload, fast thermal fault recovery, and logic-compatible enable control - critical for USB-compliant hot-swap and power sequencing designs requiring stable 2-A output with minimal board space.

Technical Context

The TPS2001CDGKR integrates an N-channel MOSFET power switch with internal charge pump gate drive, enabling low R_DS(on) (72–98 mΩ) without external high-side driver circuitry. Its UVLO (3.5–4.0 V rising threshold) prevents turn-on during brownout, while deglitched FLT output (6–12 ms filter) avoids false fault latching during transient surges.

It operates exclusively in constant-current mode during overload - not foldback or shutdown - maintaining precise 2.3–3.4 A current limit across –40°C to 125°C junction temperature. Thermal shutdown activates at 135°C (in current limit) with 20°C hysteresis, enabling automatic restart after cooling.

Key Specifications

Pinout & Package

VSSOP-8 (DGK) package: 3.00 mm × 3.00 mm body, 0.65 mm pitch, exposed thermal pad (internally connected to GND).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS2001CDGKR, TPS2001CDGNR offers superior thermal management for continuous 2-A operation, while TPS2069CDGNR provides a lower-cost, lower-power alternative with identical footprint compatibility - enabling scalable design reuse across product tiers.

Availability

TPS2001CDGKR is available at Aetrix Electronics and suitable for USB host port protection, laptop docking station power rails, set-top box peripheral hubs, and digital TV backlight sequencing requiring stable component supply and long-term industrial availability.

Supply support for TPS2001CDGKR 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 power management technologies, with decades of expertise in high-reliability power-switch solutions.

The TPS20xxC family was engineered specifically for USB-compliant hot-swap and power-rail protection in consumer and computing systems - emphasizing fast fault response, reverse blocking, and seamless integration with 5-V supply architectures.

FAQ

What is the maximum continuous output current rating for the TPS2001CDGKR?

The TPS2001CDGKR is rated for 2 A continuous output current under recommended operating conditions (T_A ≤ 85°C, proper PCB thermal design). Its current limit threshold is specified as 2.3–3.4 A at 25°C, with ±20% accuracy maintained across –40°C to 125°C junction temperature range. Derating applies above 85°C ambient per thermal data in the datasheet.

Does the TPS2001CDGKR include reverse current blocking functionality?

Yes, the TPS2001CDGKR provides inherent reverse current blocking when disabled. The integrated N-channel MOSFET prevents current flow from OUT to IN, eliminating backfeed into the 5-V supply rail during hot-plug events or system power-down - a critical feature for USB compliance and system-level power integrity.

How does the FLT pin on the TPS2001CDGKR behave during overcurrent events?

The FLT pin on the TPS2001CDGKR is an active-low open-drain output that asserts low during overcurrent or overtemperature conditions. It includes a 6–12 ms deglitch filter to reject transient spikes, ensuring only sustained faults trigger the signal. When cleared (e.g., by disabling EN), FLT returns high-impedance - requiring an external pull-up resistor to monitor status.

Can the TPS2001CDGKR operate from a 4.8-V input supply?

Yes, the TPS2001CDGKR supports input voltages from 4.5 V to 5.5 V, making 4.8 V fully compliant with its recommended operating conditions. Its undervoltage lockout (UVLO) has a rising threshold of 3.5–4.0 V, so operation at 4.8 V ensures reliable enablement, stable R_DS(on), and full current-limit accuracy without brownout risk.

Is the TPS2001CDGKR pin-compatible with other devices in the TPS20xxC family?

Yes, the TPS2001CDGKR shares identical VSSOP-8 (DGK) pinout with TPS2065CDGKR, TPS2069CDGKR, and TPS2069C-2DGKR - enabling direct substitution in layouts where current rating and output discharge requirements align. However, TPS2001CDGKR lacks output discharge (unlike TPS2065C), so designs relying on rapid VOUT discharge must verify timing impact.