Texas Instruments TPS2001EDGKR

Overview

TPS2001EDGKR from Texas Instruments is a 2A current-limited power-distribution switch with active-high enable, reverse current blocking, and ±20% accurate fixed current limit. It operates from 2.7V to 5.5V input rails, features 86 mΩ typical R_DS(ON) at 5V, 2µs overcurrent response, and integrated soft-start-designed for USB downstream-facing port protection in PC and peripheral applications.

For engineers reviewing the TPS2001EDGKR datasheet, TPS2001EDGKR pinout, TPS2001EDGKR application, or TPS2001EDGKR equivalent, this device delivers predictable fault current limiting under short-circuit conditions, deglitched fault reporting for robust system monitoring, and thermal shutdown with hysteresis for sustained reliability in high-capacitance load environments.

Technical Context

The TPS2001EDGKR uses an internal charge pump to drive an N-channel MOSFET power switch, enabling low R_DS(ON) while supporting 2.7–5.5V operation without external gate bias. Its constant-current limiting engages within 1.5 µs when output load exceeds 2.1–3.5 A across temperature, maintaining safe fault current regardless of input voltage or load impedance.

It integrates undervoltage lockout (2.2–2.6 V rising threshold), output discharge (~500 Ω pulldown), and active-low open-drain FLT signaling with 6–12 ms deglitching. The device enters shutdown below 0.8 V EN or 2 V IN, drawing ≤5 µA supply current, and supports TTL/CMOS-compatible logic inputs.

Key Specifications

Pinout & Package

DGK package: 8-pin VSSOP (3.00 mm × 3.00 mm) with exposed PowerPAD™ thermal pad (connected to GND for optimal thermal performance).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS2001EDGKR, the DBV variant trades thermal robustness for footprint reduction, while the TPS2069EDGK offers identical packaging but requires hardware or firmware adaptation for enable polarity-neither is pin-compatible without layout or logic changes.

Availability

TPS2001EDGKR is available at Aetrix Electronics and suitable for USB peripheral protection, PC motherboard power management, and data center board-level fault isolation requiring stable component supply and long-term lifecycle support.

Supply support for TPS2001EDGKR 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 power management ICs for computing, industrial, and consumer applications.

The TPS20xxE family was designed specifically for USB-compliant power distribution, emphasizing fast fault response, reverse current blocking, and seamless integration into high-capacitance load environments like docking stations and peripheral hubs.

FAQ

What is the maximum continuous output current supported by the TPS2001EDGKR?

The TPS2001EDGKR supports a continuous output current of 2 A, with a short-circuit output current (I_OS) ranging from 2.1 A to 3.5 A depending on temperature and input voltage. This fixed current limit is accurate to ±20% across –40°C to 125°C junction temperature, ensuring consistent protection behavior without external calibration. The TPS2001EDGKR maintains this limit via constant-current mode operation during overload conditions.

Does the TPS2001EDGKR provide reverse current blocking when disabled?

Yes, the TPS2001EDGKR provides true reverse current blocking when disabled: reverse leakage current is specified at 0 µA (typical) and ≤1 µA across –40°C to 125°C, with V_OUT = 5.5 V and IN grounded. This prevents backfeeding from powered downstream loads into the upstream supply rail-a critical feature for USB DFP and hot-swap applications where multiple power domains coexist.

What is the purpose of the FLT pin on the TPS2001EDGKR, and how is it used?

The FLT pin on the TPS2001EDGKR is an active-low, open-drain fault indicator that asserts during overcurrent or overtemperature events. It features 6–12 ms deglitching on both edges to reject transient noise. A pull-up resistor (typically 10 kΩ to 3.3 V or 5 V) is required externally. When asserted, FLT signals the host controller to take corrective action-such as disabling the port or logging the event-without requiring continuous polling of the TPS2001EDGKR's internal state.

Can the TPS2001EDGKR operate from a 3.3 V input supply?

Yes, the TPS2001EDGKR operates from 2.7 V to 5.5 V input voltage, fully supporting 3.3 V rails. At 3.3 V, its R_DS(ON) remains ≤105 mΩ (typical), delivering up to 2 A with minimal voltage drop and power loss. The enable threshold (VIH = 1.75 V min at 5 V VIN, scaling down per datasheet curves) ensures reliable activation even with 3.3 V logic control signals, making it suitable for mixed-voltage system designs.

How does the TPS2001EDGKR handle thermal overload conditions?

When the TPS2001EDGKR enters sustained current limiting, junction temperature rises until thermal shutdown activates at 135–175°C (rising threshold). The device then turns off, cools by ≥10°C hysteresis, and automatically restarts-cycling until the overload is removed. This thermal cycling behavior is documented in the datasheet and allows continued fault detection without permanent latch-off, preserving system observability while preventing destructive overheating of the TPS2001EDGKR or PCB.