Texas Instruments TPS22958NDGNR

Overview

TPS22958NDGNR from Texas Instruments is a single-channel N-channel load switch optimized for 0.6 V–5.5 V input rails, delivering up to 6 A continuous current in the DGN package with 14 mΩ R_ON at 5 V input and 5 V bias. It features adjustable rise time via external CT capacitor, active-high GPIO-compatible enable (1.2 V logic compatible), and operates across –40°C to 105°C for industrial power rail control in EPOS and building automation systems.

For engineers reviewing the TPS22958NDGNR datasheet, TPS22958NDGNR pinout, TPS22958NDGNR application, or TPS22958NDGNR equivalent, key selection criteria include its 6 A continuous rating in the thermally enhanced DGN package, adjustable slew rate for inrush control, low 55 µA quiescent current at 5 V bias, and absence of Quick Output Discharge (QOD) - distinguishing it from the standard TPS22958DGNR.

Technical Context

The TPS22958NDGNR integrates an N-channel MOSFET controlled by a high-impedance active-high ON input, with internal charge pump powered by a dedicated 2.5 V–5.5 V VBIAS supply. Its gate drive architecture enables reliable switching down to 0.6 V VIN while maintaining low R_ON across wide voltage and temperature ranges.

Rise time is externally programmable via capacitor on the CT pin (e.g., 1000 pF yields ~769 µs rise at VIN = 5 V), directly controlling inrush current magnitude. Unlike the QOD-equipped TPS22958x variant, the 'N' suffix denotes omission of the internal 135 Ω output pulldown resistor - resulting in open-circuit VOUT during disable state per functional table.

Key Specifications

Pinout & Package

TPS22958NDGNR uses the 8-pin DGN package (3.0 mm × 4.9 mm × 1.1 mm, 0.65 mm pitch) with exposed thermal pad (tied to GND) for enhanced power dissipation.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar load switch applications.

Compared with TPS22958DGNR, the TPS22958NDGNR removes QOD to reduce complexity and cost where output float is acceptable; versus TPS22975DGNR, it prioritizes minimal conduction loss and higher current capacity over protection features.

Availability

TPS22958NDGNR is available at Aetrix Electronics and suitable for EPOS, factory automation, and building automation applications requiring stable component supply, high-current load switching, and precise inrush control.

Supply support for TPS22958NDGNR 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.

The TPS22958x family targets high-efficiency, space-constrained power rail control in industrial and computing systems - emphasizing low R_ON, flexible biasing, and programmable turn-on characteristics.

FAQ

What is the maximum continuous current rating for TPS22958NDGNR?

The TPS22958NDGNR supports up to 6 A continuous switch current when mounted on a PCB with adequate thermal management (e.g., thermal pad soldered to GND plane) and ambient temperature ≤75°C. This rating is specific to the DGN package and assumes proper layout per TI's guidelines - exceeding this current risks thermal shutdown or long-term reliability degradation.

Does TPS22958NDGNR include Quick Output Discharge (QOD)?

No, the 'N' suffix in TPS22958NDGNR explicitly indicates omission of the Quick Output Discharge feature. When the ON pin is low, VOUT is left electrically open - not pulled to GND. This differs from the standard TPS22958DGNR, which integrates a 135 Ω pulldown resistor. Confirm system-level behavior with floating VOUT during disable before selecting TPS22958NDGNR.

How does the CT pin adjust rise time on TPS22958NDGNR?

The CT pin accepts an external capacitor to GND that linearly controls slew rate: SR (µs/V) ≈ 0.146 × CT (pF) + 14.78. For example, a 1000 pF capacitor yields ~769 µs rise time (10–90%) at VIN = 5 V. Use X7R ceramic capacitors rated ≥25 V; avoid leaving CT floating, as this results in fastest (uncontrolled) turn-on.

What is the minimum logic voltage compatible with the ON pin of TPS22958NDGNR?

The ON pin of TPS22958NDGNR has a guaranteed high-level input threshold (V_IH) of 1.2 V minimum when VBIAS = 2.5–5.5 V, making it fully compatible with 1.2 V, 1.8 V, 2.5 V, and 3.3 V GPIO outputs. Do not leave the ON pin unconnected - tie to GND or logic high through appropriate series resistance if driven by open-drain sources.

Why does TPS22958NDGNR require a separate VBIAS supply?

TPS22958NDGNR uses VBIAS (2.5–5.5 V) to power its internal charge pump, control logic, and gate driver - independent of VIN. This ensures strong gate drive and stable R_ON even when VIN is as low as 0.6 V. Without VBIAS, the device cannot turn on; always decouple VBIAS with a 0.1 µF ceramic capacitor placed near the pin.