Texas Instruments TPS2069DGNG4

Overview

TPS2069DGNG4 from Texas Instruments is a single-channel, current-limited, high-side power-distribution switch featuring a 70-mΩ N-channel MOSFET, 1.5-A continuous output current, 2.7 V to 5.5 V input voltage range, active-high enable logic, and thermal/short-circuit protection. It serves as a robust hot-swap controller in USB host ports and industrial peripheral power rails.

For engineers reviewing the TPS2069DGNG4 datasheet, TPS2069DGNG4 pinout, TPS2069DGNG4 application, or TPS2069DGNG4 equivalent, key selection criteria include its DGN-8 package with PowerPad, –40°C to 85°C operating temperature, deglitched OC fault reporting, reverse current blocking, and 0.6-ms typical rise time under 5-V operation.

Technical Context

The TPS2069DGNG4 integrates an internal charge pump to drive the high-side N-channel MOSFET gate, enabling full enhancement down to 2.7 V without external components. Its current-limit circuit operates with a guaranteed 1.6 A minimum and 2.6 A maximum trip threshold at 5 V, entering constant-current mode during overload before thermal shutdown activates at ~135°C.

It features undervoltage lockout (UVLO) with 2.0 V turn-on threshold and 75 mV hysteresis, ensuring reliable power-up sequencing. The open-drain OC output is deglitched for 4–15 ms to suppress false fault assertions during capacitive inrush, and remains asserted only during sustained overcurrent or thermal events.

Key Specifications

Pinout & Package

DGN-8 package (3 mm × 3 mm, 0.65 mm pitch) with exposed PowerPad thermally and electrically connected to GND. Pin 1 = GND, Pin 2 = IN, Pin 3 = IN, Pin 4 = EN, Pin 5 = OC, Pin 6 = OUT, Pin 7 = OUT, Pin 8 = OUT.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS2069DGNG4, TPS2068DGNR offers identical protection and packaging but mandates active-low control, while TPS2051BDBVR trades certification and thermal robustness for lower cost and smaller footprint-neither is pin-compatible nor drop-in.

Availability

TPS2069DGNG4 is available at Aetrix Electronics and suitable for USB host protection, industrial hot-swap modules, and medical peripheral power management requiring stable component supply, long-term lifecycle support, and certified safety compliance.

Supply support for TPS2069DGNG4 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 automotive and industrial qualification expertise.

The TPS206x family was designed specifically for robust, certified power-distribution switching in USB and hot-plug applications-emphasizing fault resilience, ease of layout, and regulatory compliance over raw efficiency.

FAQ

What is the enable logic polarity of the TPS2069DGNG4?

The TPS2069DGNG4 uses active-high enable logic: the power switch turns on when the EN pin voltage exceeds 2.0 V (VIH min), and remains off when EN is below 0.8 V (VIL max). This eliminates the need for external inverters when interfacing directly with 3.3-V or 5-V microcontroller GPIOs. The TPS2069DGNG4 datasheet confirms this behavior across the full operating temperature range.

Does the TPS2069DGNG4 provide reverse current blocking?

Yes, the TPS2069DGNG4 provides inherent reverse current blocking: when the device is disabled (EN low) or powered off, it prevents current flow from the OUT pins back to the IN pin-even if OUT is held at a higher voltage. This protects upstream supplies during hot-swap events and is confirmed in the Electrical Characteristics table under "Reverse leakage current" (≤0.2 µA at 25°C).

What is the purpose of the PowerPad on the TPS2069DGNG4 DGN-8 package?

The exposed PowerPad on the TPS2069DGNG4 DGN-8 package serves dual functions: it provides a low-thermal-resistance path to the PCB ground plane (critical for dissipating up to 600 mW at 70°C ambient) and forms part of the safety-certified CB circuit. TI's datasheet explicitly requires soldering the PowerPad to GND to meet UL and CB certification conditions-omitting this compromises thermal performance and regulatory compliance.

How does the OC pin of the TPS2069DGNG4 behave during startup?

The OC pin of the TPS2069DGNG4 remains high-impedance (not asserted) during normal power-up-even with heavy capacitive loads-because its deglitch circuit (4–15 ms timeout) prevents false triggering from inrush transients. OC only pulls low after a sustained overcurrent or thermal event is confirmed, and the TPS2069DGNG4 datasheet guarantees "no OC glitch during power up" as a key feature.

Can the TPS2069DGNG4 operate from a 3.3-V supply?

Yes, the TPS2069DGNG4 supports 2.7 V to 5.5 V input operation, including 3.3-V rails. At 3.3 V, its rDS(on) increases to 75–125 mΩ (vs. 70 mΩ at 5 V), resulting in higher conduction loss-but it still delivers 1.5-A continuous current with adequate thermal margin in the DGN-8 package. The internal charge pump ensures reliable gate drive down to the minimum 2.7-V input.