Texas Instruments TPS2061CDGNR

Overview

TPS2061CDGNR from Texas Instruments is a 1-A current-limited, single-channel power-distribution switch in an 8-pin MSOP-PowerPAD package. It integrates an N-channel MOSFET with ±20% accurate fixed current limit (1.3 A to 1.8 A), 2 µs overcurrent response, reverse current blocking, and built-in soft-start - designed for USB port protection in 5-V systems with heavy capacitive loads or short-circuit risk.

For engineers reviewing the TPS2061CDGNR datasheet, TPS2061CDGNR pinout, TPS2061CDGNR application, or TPS2061CDGNR equivalent, this device delivers predictable fault current limiting, deglitched fault reporting, and thermal shutdown at 135°C - critical for reliable hot-swap and load switching in space-constrained consumer and computing designs.

Technical Context

The TPS2061CDGNR employs an internal charge pump to drive its N-channel MOSFET, enabling low R_DS(on) (86–100 mΩ typical at 25°C) while maintaining input-to-output voltage regulation under load. Its constant-current limiting operates independently of output voltage, delivering stable 1.55 A nominal current limit across –40°C to 125°C junction temperature.

It features active-low open-drain FLT signaling with 6–12 ms deglitching, undervoltage lockout (3.5–4.0 V rising threshold), and logic-compatible enable input (1.0–2.0 V high threshold). The MSOP-PowerPAD package includes an exposed thermal pad internally connected to GND, requiring PCB thermal vias for optimal junction-to-board thermal resistance (37.2°C/W).

Key Specifications

Pinout & Package

TPS2061CDGNR uses the 8-pin MSOP-PowerPAD (DGN) package (3.00 mm × 3.00 mm), featuring an exposed thermal pad internally tied to GND for enhanced heat dissipation. The PowerPAD must be soldered to a PCB ground plane with thermal vias for rated performance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS2061DR and TPS2065CDGNR, the TPS2061CDGNR provides superior thermal performance via PowerPAD and eliminates output discharge circuitry - optimizing for reliability in compact, thermally demanding USB port applications without added discharge timing constraints.

Availability

TPS2061CDGNR is available at Aetrix Electronics and suitable for USB port protection, high-definition digital TV power management, and set-top box peripheral interface applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for TPS2061CDGNR 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 and embedded processing technologies, with decades of expertise in power management ICs.

The TPS20xxC family was designed specifically for robust, low-risk 5-V power distribution in consumer electronics - emphasizing fast fault response, reverse blocking, and seamless integration into USB-compliant systems.

FAQ

What is the maximum continuous output current rating for the TPS2061CDGNR?

The TPS2061CDGNR is rated for 1 A continuous output current. Its current-limit threshold is specified as 1.3 A (min) to 1.8 A (max) at 25°C, with typical value 1.55 A - ensuring safe operation under worst-case conditions while supporting USB 2.0/3.0 load profiles. Derating may apply above 85°C ambient.

Does the TPS2061CDGNR include reverse current blocking functionality?

Yes, the TPS2061CDGNR 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 confirmed in the Functional Block Diagram and Electrical Characteristics table under I_REV (reverse leakage current ≤1 µA at 5.5 V).

What package type and thermal characteristics does the TPS2061CDGNR use?

The TPS2061CDGNR uses the 8-pin MSOP-PowerPAD (DGN) package with a 3.00 mm × 3.00 mm body and exposed thermal pad tied to GND. Its junction-to-board thermal resistance is 37.2°C/W, requiring PCB thermal vias to the ground plane to maintain safe operation at full 1-A load in 85°C ambient.

How does the FLT pin behave during overcurrent events on the TPS2061CDGNR?

The FLT pin on the TPS2061CDGNR is an active-low, open-drain output that asserts (pulls low) during overcurrent or overtemperature faults. It includes a 6–12 ms deglitch circuit to reject transient spikes. FLT returns high-impedance once the fault clears and the device recovers - verified in Section 6.7 and Figure 6-7 of the datasheet.

Is the TPS2061CDGNR compatible with standard USB 5-V bus voltage tolerances?

Yes, the TPS2061CDGNR operates across 4.5 V to 5.5 V input voltage, fully covering the USB specification's 5 V ±5% tolerance. Its undervoltage lockout activates below 3.5–4.0 V (rising threshold), ensuring clean turn-on only within valid USB bus range - confirmed in Section 6.3 and 6.7.