Texas Instruments TPS2064DGNRG4

Overview

TPS2064DGNRG4 from Texas Instruments is a dual-channel, current-limited, high-side power-distribution switch featuring two 70-mΩ N-channel MOSFETs, 1.5-A continuous output per channel, active-high enable inputs, and integrated thermal/short-circuit protection. It operates from 2.7 V to 5.5 V and is used in USB host/hub power management and hot-plug peripheral interfaces.

For engineers reviewing the TPS2064DGNRG4 datasheet, TPS2064DGNRG4 pinout, TPS2064DGNRG4 application, or TPS2064DGNRG4 equivalent, key selection criteria include dual-channel independent enable control, deglitched open-drain overcurrent reporting (OC1/OC2), reverse current blocking, 0.6-ms typical rise time, and DGN-8 package compatibility with PowerPad thermal grounding.

Technical Context

The TPS2064DGNRG4 integrates two independent high-side N-channel MOSFET switches controlled by logic-level EN1 and EN2 inputs (active high). Each channel includes dedicated current-sense circuitry, thermal shutdown (135°C trip, 125°C recovery), and deglitched OCx open-drain fault outputs with 4–15 ms timeout.

Its internal charge pump enables full enhancement of the MOSFETs down to 2.7 V input, eliminating external components while ensuring controlled 0.4–1.5 ms rise/fall times. Undervoltage lockout (UVLO) disables switching below ~2 V, and reverse current blocking prevents backflow when OUT > IN.

Key Specifications

Pinout & Package

DGN-8 package (MSOP-8 with exposed PowerPad); 3 mm × 3 mm body, 0.65 mm pitch, PowerPad thermally and electrically connected to GND for enhanced thermal dissipation and CB certification compliance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS2064DRBR and TPS2052BDR, the TPS2064DGNRG4 delivers superior thermal performance in the DGN-8 package, integrated dual-channel fault reporting via OC1/OC2, and active-high enable compatibility with modern microcontrollers-making it optimal for certified USB host and hot-swap designs requiring reliability and compliance.

Availability

TPS2064DGNRG4 is available at Aetrix Electronics and suitable for USB host protection, hot-plug peripheral modules, and self-powered hub power distribution requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for TPS2064DGNRG4 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 ICs, with decades of expertise in USB interface and power-distribution solutions.

The TPS206x product line was designed specifically for robust, standards-compliant power switching in USB hosts, hubs, and hot-plug systems-emphasizing fault resilience, low EMI, and safety certification readiness.

FAQ

What is the operating temperature range for the TPS2064DGNRG4?

The TPS2064DGNRG4 is specified for operation from 0°C to 70°C ambient temperature. Its thermal shutdown activates at 135°C junction temperature with 10°C hysteresis, and recovery occurs automatically at 125°C. This range aligns with commercial USB host and peripheral applications, and the DGN-8 PowerPad enhances heat transfer to maintain safe junction temperatures under 1.5-A continuous load.

Does the TPS2064DGNRG4 support reverse current blocking?

Yes, the TPS2064DGNRG4 provides inherent reverse current blocking: when the output voltage (OUT1 or OUT2) exceeds the input voltage (IN), the internal N-channel MOSFET body diode remains reverse-biased and no current flows backward. This eliminates the need for external blocking diodes in bus-powered USB applications and prevents backfeeding into shared power rails.

How does the OC1 and OC2 output behave during overcurrent events?

OC1 and OC2 are open-drain, active-low outputs that assert (pull to GND) when their respective channel enters current-limit mode or thermal shutdown. Each output includes a 4–15 ms deglitch circuit to suppress false triggers during inrush or transient overload. The signal remains asserted until the fault condition clears and the device recovers-enabling direct connection to microcontroller interrupt pins for real-time USB overcurrent reporting.

Can the TPS2064DGNRG4 be used in a 3.3-V input system?

Yes, the TPS2064DGNRG4 operates reliably from 2.7 V to 5.5 V, including nominal 3.3-V supplies. At 3.3 V, its typical RDS(on) is 75 mΩ, resulting in ~170 mW conduction loss per channel at 1.5 A. The internal charge pump ensures full gate drive, and rise time remains within specification (0.4–1.0 ms), making it suitable for low-voltage embedded systems and portable USB peripherals.

Is the PowerPad on the TPS2064DGNRG4 required to be connected to ground?

Yes, the PowerPad on the TPS2064DGNRG4 must be soldered to the PCB ground plane. It serves as both the primary thermal path and the electrical ground reference for the IC. TI specifies this connection to meet CB certification requirements and achieve the published θJA of 137 °C/W. Omitting or floating the PowerPad degrades thermal performance and may invalidate safety certifications.