Texas Instruments CSD22204WT

Overview

CSD22204WT from Texas Instruments is a –8 V, 8.2 mΩ P-channel NexFET™ power MOSFET in a 1.5 mm × 1.5 mm DSBGA package, rated for –5 A continuous drain current at 25°C and optimized for ultra-low-profile load switching in space-constrained battery-powered systems such as portable medical devices and USB-C power delivery circuits.

For engineers reviewing the CSD22204WT datasheet, CSD22204WT pinout, CSD22204WT application, or CSD22204WT equivalent, key selection criteria include its gate-threshold voltage (–0.7 V), low R_DS(on) at –4.5 V (8.2 mΩ), gate charge total (18.9 nC), thermal resistance (75°C/W on 1 in² Cu), and DSBGA-9 package compatibility with high-density PCB layouts.

Technical Context

This device employs a trench-based P-channel silicon MOSFET structure with integrated gate ESD protection and a built-in gate-source voltage clamp, enabling robust operation under transient conditions. Its low gate charge (18.9 nC) and fast turn-on delay (58 ns) support high-frequency PWM control in synchronous buck converters and hot-swap circuits.

The CSD22204WT exhibits strong temperature stability: R_DS(on) increases only 1.3× from 25°C to 125°C at V_GS = –4.5 V, and threshold voltage shifts predictably from –0.45 V to –0.95 V across –55°C to 150°C, simplifying thermal design in wide-temperature industrial applications.

Key Specifications

Pinout & Package

Package: DSBGA-9 (Wafer-Level Chip-Scale Ball Grid Array), 1.5 mm × 1.5 mm body, 0.31 mm solder ball pitch, 0.62 mm max height, MSL Level-1 (260°C reflow).

Key Features

Applications

Equivalent & Alternatives

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

Compared with DMN2004LKQ-7 and Si2301DDS-T1-GE3, the CSD22204WT delivers the lowest R_DS(on) in the smallest footprint, making it optimal for high-efficiency, space-critical battery-switching roles - but requires careful attention to gate drive strength due to its lower V_GS(th) and tighter layout tolerances for DSBGA soldering.

Availability

CSD22204WT is available at Aetrix Electronics and suitable for battery protection, USB-C power delivery, and portable medical sensor applications requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant wafer-level packaging.

Supply support for CSD22204WT 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 company headquartered in Dallas, Texas, specializing in analog, embedded processing, and power management technologies for industrial, automotive, and consumer markets.

The CSD22204WT belongs to TI's NexFET™ power MOSFET family, engineered specifically for ultra-low R_DS(on) and minimal gate charge in wafer-level chip-scale packages to address miniaturization and efficiency demands in portable electronics.

FAQ

What is the maximum continuous drain current rating for the CSD22204WT at 105°C ambient?

The CSD22204WT is rated for –5 A continuous drain current at T_A = 25°C. At 105°C ambient, derating applies per its thermal resistance (R_θJA = 75°C/W). With a 150°C max junction temperature, allowable power dissipation drops to 3.375 W, supporting approximately –2.0 A continuous current at V_GS = –4.5 V (based on R_DS(on) ≈ 9.9 mΩ max). Always verify with actual board layout thermal performance.

Does the CSD22204WT require an external gate resistor for typical load-switch applications?

The CSD22204WT does not require an external gate resistor for basic on/off load switching, as its 18.9 nC gate charge and low gate resistance (300 Ω typical) allow clean transitions with standard 3.3 V GPIO drivers. However, a small series resistor (10–47 Ω) is recommended to dampen ringing in high-speed PWM or noisy EMI environments - especially when routing gate traces >5 mm from the driver.

Can the CSD22204WT be used in a high-side configuration with 5 V logic control?

No - the CSD22204WT is a P-channel MOSFET with a negative V_GS(th) (–0.7 V typical), meaning it turns on when V_G < V_S. To operate as a high-side switch with 5 V logic, you would need a gate drive voltage ≤ (V_source – |V_GS(th)|), i.e., ≤4.3 V relative to source. Direct 5 V logic control results in insufficient V_GS magnitude and unreliable turn-on; a dedicated P-channel gate driver or level shifter is required.

What is the moisture sensitivity level (MSL) and reflow profile for the CSD22204WT?

The CSD22204WT is rated MSL Level-1 with unlimited floor life at ≤30°C/60% RH and qualified for peak reflow temperatures up to 260°C (per JEDEC J-STD-020). It uses SnAgCu solder balls and is compatible with both IR and convection reflow processes. No bake preconditioning is required prior to assembly, provided the tape-and-reel packaging remains unopened and within humidity indicator card specifications.

How does the CSD22204WT's R_DS(on) change over temperature, and what impact does this have on thermal design?

The CSD22204WT's R_DS(on) increases by ~0.5%/°C above 25°C, reaching ~1.3× its 25°C value at 125°C case temperature. At V_GS = –4.5 V, R_DS(on) rises from 8.2 mΩ (typ) to ~10.7 mΩ (typ) at 125°C. This positive temperature coefficient improves current sharing in parallel configurations but necessitates conservative thermal design - e.g., limiting steady-state power dissipation to ≤1.0 W on standard FR4 to maintain T_J < 125°C.