Texas Instruments CSD25404Q3T

Overview

CSD25404Q3T from Texas Instruments is a –20 V, 5.5 mΩ P-channel NexFET™ power MOSFET in a VSON-CLIP (DQG) 8-pin package, optimized for high-efficiency load switching and battery protection circuits with ultra-low gate charge (10.9 nC at –4.5 V) and low R_DS(on) at logic-level drive. It delivers –104 A continuous drain current at T_C = 25°C and supports DC-DC converter synchronous rectification.

For engineers reviewing the CSD25404Q3T datasheet, CSD25404Q3T pinout, CSD25404Q3T application, or CSD25404Q3T equivalent, key selection criteria include its –20 V V_DS, 5.5 mΩ R_DS(on) @ V_GS = –4.5 V, 10.9 nC total gate charge, thermal resistance of 1.3°C/W (junction-to-case), and SON 3.3 mm × 3.3 mm footprint compatibility with space-constrained power management layouts.

Technical Context

This P-channel MOSFET employs TI's NexFET™ silicon technology to achieve ultra-low Q_g (10.9 nC) and Q_gd (2.2 nC), enabling fast switching with minimal drive loss in high-frequency load switch and battery disconnect applications. Its threshold voltage of –0.9 V (typical) ensures reliable turn-on with standard logic-level controllers.

The device features a thermally enhanced VSON-CLIP (DQG) package with exposed drain paddle, delivering R_θJC = 1.3°C/W and R_θJA = 55°C/W on 1-inch² 2 oz. Cu PCB - critical for thermal management in compact DC-DC converters and portable battery systems.

Key Specifications

Pinout & Package

VSON-CLIP (DQG) 8-pin plastic package with exposed drain paddle (top view: pins 1–4 on left, 5–8 on right; pin 1 = Source, pin 2 = Source, pin 3 = Source, pin 4 = Gate, pin 5 = Drain, pin 6 = Drain, pin 7 = Drain, pin 8 = Drain). Package dimensions: 3.3 mm × 3.3 mm × 1.0 mm (max height), MSL Level-1, 260°C reflow compatible.

Key Features

Applications

Equivalent & Alternatives

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

Compared with DMG2305UVT-7 and Si7157DP-T1-GE3, the CSD25404Q3T delivers superior current density (–104 A), lowest R_DS(on) (5.5 mΩ), and best thermal resistance (1.3°C/W), making it optimal for high-efficiency, high-reliability 10–30 A load switching in compact industrial and battery systems.

Availability

CSD25404Q3T is available at Aetrix Electronics and suitable for battery protection, USB-C power delivery load switching, and point-of-load DC-DC converter applications requiring stable component supply, long-term lifecycle support, and MSL Level-1 reflow compatibility.

Supply support for CSD25404Q3T 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 expertise in high-performance power MOSFET design and manufacturing.

The CSD25404Q3T belongs to TI's NexFET™ power MOSFET product line, engineered specifically for high-efficiency, high-density power conversion and load management in battery-powered, industrial, and computing systems.

FAQ

What is the maximum continuous drain current rating for the CSD25404Q3T at 25°C case temperature?

The CSD25404Q3T supports –104 A continuous drain current at T_C = 25°C, as specified in its Absolute Maximum Ratings table. This rating assumes proper thermal management via the exposed drain paddle soldered to ≥1 inch² of 2 oz. copper on FR4 PCB. Derating is required above 25°C case temperature per the R_θJC = 1.3°C/W thermal metric.

Does the CSD25404Q3T require a gate driver IC, or can it be driven directly by a microcontroller GPIO?

The CSD25404Q3T can be driven directly by a 3.3 V or 5 V microcontroller GPIO due to its –0.9 V typical V_GS(th) and logic-level compatibility down to –2.5 V. However, for high-speed switching (>200 kHz) or high-current loads (>5 A), a dedicated gate driver is recommended to manage its 10.9 nC total gate charge and minimize switching losses in the CSD25404Q3T.

What is the R_DS(on) value of the CSD25404Q3T at V_GS = –2.5 V, and why does it matter for system design?

The CSD25404Q3T has an R_DS(on) of 10.1 mΩ (typical) at V_GS = –2.5 V and I_D = –10 A. This parameter is critical for low-voltage control scenarios - such as MCU GPIOs operating at 2.5 V - ensuring predictable on-resistance and conduction loss without requiring level-shifting circuitry, simplifying design and improving reliability in battery cutoff and USB power switches.

Is the CSD25404Q3T suitable for reverse polarity protection in automotive 12 V systems?

The CSD25404Q3T is rated for –20 V V_DS, which meets basic 12 V automotive nominal requirements but does not cover ISO 7637-2 load dump transients (up to +120 V) or cold-crank undervoltage events. It is suitable for non-safety-critical, interior subsystems with clamped input rails (e.g., infotainment USB ports), but not for direct battery-line protection without additional TVS or transient suppression upstream of the CSD25404Q3T.

How does the thermal performance of the CSD25404Q3T compare to standard SO-8 MOSFETs in high-current applications?

The CSD25404Q3T's VSON-CLIP (DQG) package achieves R_θJC = 1.3°C/W - over 3× better than typical SO-8 MOSFETs (~4–5°C/W) - due to its copper-clip construction and exposed drain paddle. This allows the CSD25404Q3T to dissipate >80 W with minimal temperature rise when properly mounted, enabling smaller PCB footprints and eliminating need for discrete heatsinks in 10–30 A load switch designs.