Texas Instruments CSD16410Q5A

Overview

CSD16410Q5A from Texas Instruments is an N-channel NexFET™ power MOSFET in a 5 mm × 6 mm SON package, designed as a control FET in high-frequency synchronous buck converters for networking and telecom systems. It features 25 V V_DS, 6.8 mΩ R_DS(on) at V_GS = 10 V and 17 A, 3.9 nC total gate charge, and avalanche-rated ruggedness for reliable operation under transient stress.

For engineers reviewing the CSD16410Q5A datasheet, CSD16410Q5A pinout, CSD16410Q5A application, or CSD16410Q5A equivalent, this device is selected for low-loss, high-efficiency point-of-load (POL) conversion where ultra-low Q_g/Q_gd, thermal performance, and compact 8-pin QFN layout are critical design requirements.

Technical Context

The CSD16410Q5A employs a silicon-based trench-gate process optimized for fast switching with minimal gate drive energy. Its low 1.1 nC Q_gd and 3.9 nC Q_g reduce switching losses in 300 kHz–1 MHz POL converters, while its 3.8 °C/W R_θJC enables efficient heat transfer to PCB copper layers.

It operates with a 1.9 V typical V_GS(th), supports ±12 V reverse gate voltage, and delivers 16 A continuous drain current at T_C = 25 °C. The device integrates a body diode with 0.85 V forward voltage at 17 A and 14 nC Q_rr, enabling robust synchronous rectification without external Schottky supplementation.

Key Specifications

Pinout & Package

Package: VSONP (DQJ), 5 mm × 6 mm, 8-pin exposed-pad QFN with bottom-side thermal pad. Compliant with MSL Level-1, 260 °C reflow.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar N-channel control FET applications.

Compared with BSC014N06LS6 and SiR872DP, the CSD16410Q5A delivers optimal balance of low Q_g, tight V_GS(th) distribution, and 25 V rating for 12 V-input POLs-making it more efficient than the Vishay part and significantly more responsive than the Infineon part in high-frequency, low-voltage applications.

Availability

CSD16410Q5A is available at Aetrix Electronics and suitable for telecom point-of-load converters, networking ASIC core supplies, and industrial FPGA I/O rails requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant manufacturing.

Supply support for CSD16410Q5A 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 ICs, with decades of expertise in high-efficiency power conversion solutions.

The CSD16410Q5A belongs to TI's NexFET™ power MOSFET family, engineered specifically for high-frequency synchronous buck control FET applications in space-constrained, thermally demanding telecom and computing infrastructure.

FAQ

What is the maximum continuous drain current for CSD16410Q5A at 125°C case temperature?

The CSD16410Q5A supports 16 A continuous drain current at T_C = 25 °C, derating to approximately 10.5 A at T_C = 125 °C based on its R_DS(on) temperature coefficient and thermal resistance. This value is confirmed in the Absolute Maximum Ratings table of the SLPS205A datasheet and validated by the R_DS(on) vs. temperature curve (Figure 8). Designers must ensure PCB copper area and airflow maintain T_C ≤ 125 °C to sustain rated current for CSD16410Q5A.

Does CSD16410Q5A require a gate resistor for stable operation in a 500 kHz synchronous buck converter?

Yes - a 2 Ω gate resistor is recommended per the CSD16410Q5A datasheet's dynamic characteristics test conditions (td(on), tr, etc.), and TI application note SLPA005 confirms that 1–3 Ω resistors suppress ringing and optimize EMI in 5×6 QFN layouts. The CSD16410Q5A's low 0.7–1.4 Ω intrinsic gate resistance makes external damping essential to prevent oscillation during fast edge transitions, especially with high-di/dt loads. Omitting it risks shoot-through and premature failure of the CSD16410Q5A.

Can CSD16410Q5A be used as a synchronous rectifier (low-side FET) instead of a control FET?

No - the CSD16410Q5A is optimized as a control (high-side) FET, not a synchronous rectifier. Its body diode has 0.85 V V_SD at 17 A and 14 nC Q_rr, which is acceptable for freewheeling but inefficient compared to dedicated low-Q_rr sync-FETs. The CSD16410Q5A's R_DS(on) is not specified for bidirectional conduction, and its gate threshold (1.9 V) lacks the tight distribution needed for reliable low-side timing. Use TI's CSD17579Q5A for complementary low-side roles with the CSD16410Q5A.

What is the thermal pad soldering requirement for CSD16410Q5A to achieve the rated R_θJA of 52 °C/W?

To achieve the published R_θJA of 52 °C/W, the CSD16410Q5A's exposed thermal pad must be soldered to a minimum 1 in² (645 mm²) area of 2 oz. copper on the primary PCB layer, with ≥8 thermal vias (0.3 mm diameter, 0.6 mm pitch) connecting to inner ground planes. TI's SLPS205A datasheet specifies this layout in the Thermal Characteristics section and Figure 1. Inadequate pad area or via count increases R_θJA beyond 52 °C/W, risking thermal shutdown or reduced lifetime for the CSD16410Q5A.

Is CSD16410Q5A suitable for automotive applications per AEC-Q101?

No - the CSD16410Q5A is not AEC-Q101 qualified. Its datasheet specifies an operating junction temperature range of –55 °C to 150 °C, but TI does not list it in its automotive-grade product portfolio, nor does the SLPS205A document include AEC-Q101 test reports or automotive-specific reliability data. For automotive 12 V POL applications, TI recommends the AEC-Q101-qualified CSD17573Q5A or CSD16321Q5, which share the same 5×6 QFN package but undergo extended qualification testing. CSD16410Q5A remains intended for industrial and computing use only.