Texas Instruments CSD16327Q3T

Overview

CSD16327Q3T from Texas Instruments is a 25-V, 3.4-mΩ N-channel NexFET™ power MOSFET in a VSON-CLIP (DQG) 8-pin package, optimized for 5-V gate drive in high-efficiency synchronous buck converters. It delivers 60-A continuous drain current (package-limited), features ultra-low gate charge (6.2 nC at 4.5 V), and supports avalanche-rated operation for robustness in telecom and computing point-of-load applications.

For engineers reviewing the CSD16327Q3T datasheet, CSD16327Q3T pinout, CSD16327Q3T application, or CSD16327Q3T equivalent, key selection criteria include R_DS(on) vs. V_GS behavior at 3–4.5 V, thermal resistance (R_θJC = 1.7°C/W), Q_gd/Q_g ratio for switching loss control, and SOA compliance under unclamped inductive switching conditions.

Technical Context

This MOSFET employs a silicon-limited design with optimized trench-gate structure to achieve low R_DS(on) and minimal gate-drain charge (Q_gd = 1.1 nC). Its threshold voltage (V_GS(th) = 1.2 V typ.) enables reliable turn-on with 4.5-V logic-level drivers, while transconductance (g_fs = 96 S) ensures strong current control across temperature.

The device integrates a fast body diode with Q_rr = 21 nC and t_rr = 16 ns, supporting high-frequency synchronous rectification. Thermal performance is defined by R_θJC = 1.7°C/W (max, pulse) and R_θJA = 55°C/W on 1-in² 2-oz Cu - critical for compact DC/DC converter layouts where junction-to-case heat transfer dominates.

Key Specifications

Pinout & Package

VSON-CLIP (DQG) 8-pin package with exposed thermal pad (3.3 mm × 3.3 mm footprint); designed for low-inductance, high-current PCB routing and enhanced thermal transfer via bottom-side copper connection.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar N-channel power MOSFET applications.

Compared with IRF6642TRPBF and DMTH3007LPS-13, the CSD16327Q3T provides the best balance of low Q_gd, avalanche rating, and thermal performance for 12-V-input synchronous buck converters - especially where reliability under transient overload and high-frequency operation are prioritized over marginal R_DS(on) reduction.

Availability

CSD16327Q3T is available at Aetrix Electronics and suitable for telecom point-of-load converters, server VRMs, networking ASIC supplies, and industrial FPGA core regulators requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for CSD16327Q3T 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 specializing in analog, embedded processing, and power management technologies, with over 90 years of innovation in high-reliability electronic components.

The CSD16327Q3T belongs to TI's NexFET™ power MOSFET product line, engineered specifically for high-efficiency, high-frequency DC/DC conversion in computing, telecom, and networking infrastructure where low gate charge and thermal performance are critical.

FAQ

What is the maximum continuous drain current rating for CSD16327Q3T at 25°C case temperature?

The CSD16327Q3T supports 112 A continuous drain current limited by silicon capability at T_C = 25°C, though its package-limited rating is 60 A. This higher silicon rating provides headroom for short-duration peak loads and derating at elevated temperatures - critical for burst-mode operation in server VRMs where the CSD16327Q3T maintains stable performance up to 125°C junction temperature.

Does CSD16327Q3T require a gate resistor for stable operation in a 500-kHz synchronous buck converter?

Yes - a 2-Ω gate resistor is recommended per the CSD16327Q3T datasheet's switching time characterization (t_d(on) = 5.3 ns, t_f = 6.3 ns with R_G = 2 Ω). This value balances switching speed against gate ringing and EMI; omitting it risks overshoot and shoot-through due to the device's ultra-low Q_gd and fast intrinsic switching capability.

How does the thermal performance of CSD16327Q3T compare between R_θJA and R_θJC metrics?

The CSD16327Q3T specifies R_θJC = 1.7°C/W (max) and R_θJA = 55°C/W (on 1-in² 2-oz Cu). The large gap confirms that thermal design must prioritize direct junction-to-case conduction - achieved via soldered thermal pad to internal copper layers - rather than relying on ambient convection. This makes the CSD16327Q3T ideal for multilayer PCBs with dedicated thermal vias, unlike devices with higher R_θJC that depend more on board-level copper area.

Is CSD16327Q3T suitable for use as a synchronous rectifier in a 12-V input, 3.3-V output buck converter?

Yes - the CSD16327Q3T's 4-mΩ R_DS(on) at 4.5 V, 21-nC Q_rr, and 16-ns t_rr make it highly effective as a low-side synchronous rectifier in 12-V-to-3.3-V buck converters operating up to 1 MHz. Its low V_GS(th) ensures reliable turn-on with typical controller bootstrap voltages, and its avalanche rating protects against inductive spikes during light-load discontinuous conduction mode transitions.

What is the lead finish and moisture sensitivity level (MSL) for CSD16327Q3T?

The CSD16327Q3T uses Sn (tin) lead finish and carries an MSL Level-1 rating at 260°C peak reflow temperature, meaning it is not moisture-sensitive and requires no baking prior to assembly. This simplifies manufacturing logistics and eliminates floor-life constraints - a key advantage for high-volume telecom and computing production where the CSD16327Q3T is commonly deployed.