Infineon Technologies IAUCN04S7L009ATMA1

Overview

IAUCN04S7L009ATMA1 from Infineon is an N-channel logic-level automotive power MOSFET in PG-TDSON-8-34 package, rated for 40 V V_DS, 0.91 mΩ R_DS(on) at V_GS = 10 V and 88 A, with 275 A chip-limited continuous drain current and 175 °C maximum operating temperature. It serves as a high-efficiency main or synchronous rectifier switch in 12 V/48 V automotive power distribution systems.

For engineers reviewing the IAUCN04S7L009ATMA1 datasheet, IAUCN04S7L009ATMA1 pinout, IAUCN04S7L009ATMA1 application, or IAUCN04S7L009ATMA1 equivalent, key selection criteria include its AEC-Q101 qualification, 100% single-pulse avalanche testing, MSL1 reflow compatibility up to 260 °C, and low R_DS(on) enabling high-current DC-DC and motor drive stages in engine control units and battery management modules.

Technical Context

This OptiMOS™ 7 device uses trench-based silicon technology optimized for low conduction loss and fast switching in automotive 12 V systems. Its gate threshold voltage (1.2–1.8 V) ensures reliable logic-level drive from standard microcontrollers, while its 66–85 nC total gate charge supports efficient PWM operation at frequencies up to several hundred kHz.

The MOSFET integrates a robust body diode with 32–64 nC reverse recovery charge and 41–61 ns t_rr, enabling hard-switched synchronous rectification without external freewheeling diodes. Thermal resistance R_thJC of 0.6–1.2 K/W allows direct heatsinking to PCB copper or metal-core substrates in space-constrained ECUs.

Key Specifications

Pinout & Package

Package: PG-TDSON-8-34 - Thermally enhanced 8-pin exposed-drain DSO-style leadless package with 3.4 mm × 3.3 mm footprint and 0.65 mm pitch; top-side thermal pad for direct PCB heatsinking.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IAUCN04S7L009ATMA1, the 012 variant trades 13% higher R_DS(on) for reduced cost and footprint, while the TO-263 variant maintains identical electrical specs but sacrifices thermal performance and miniaturization-making the original optimal for next-gen high-power-density automotive modules.

Availability

IAUCN04S7L009ATMA1 is available at Aetrix Electronics and suitable for engine control units, 48 V mild hybrid converters, electric power steering inverters, and battery management precharge circuits requiring stable component supply across automotive production lifecycles.

Supply support for IAUCN04S7L009ATMA1 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

Infineon Technologies AG is a German semiconductor manufacturer specializing in power management, automotive electronics, and security solutions, with global manufacturing and R&D centers.

This part belongs to the OptiMOS™ 7 product line, engineered specifically for high-current, high-temperature automotive power conversion-emphasizing low R_DS(on), avalanche ruggedness, and AEC-Q101 compliance for safety-critical subsystems.

FAQ

What is the maximum allowable gate-source voltage for IAUCN04S7L009ATMA1?

The absolute maximum V_GS is ±16 V per datasheet Rev. 1.0. Operation above +10 V provides lowest R_DS(on), but sustained bias beyond +12 V increases gate oxide stress and may accelerate wear-out in long-life automotive applications. Gate drive circuits must include clamping or zener protection to prevent overshoot during fast switching.

Does IAUCN04S7L009ATMA1 require a gate resistor, and what value is recommended?

Yes-a series gate resistor is required to control dI/dt and suppress ringing. For typical 100–300 kHz PWM in automotive DC-DC converters, a 3.5 Ω resistor (as used in datasheet test conditions) balances switching speed and EMI. Lower values (≤2 Ω) increase shoot-through risk; higher values (>10 Ω) degrade efficiency and thermal performance.

Can IAUCN04S7L009ATMA1 be used in parallel configurations?

Yes-its positive temperature coefficient of R_DS(on) enables stable current sharing. Layout symmetry (matched trace lengths, thermal vias, and Kelvin source connections) is essential. Derate total current by 15% versus sum of individual ratings to account for thermal coupling and parameter spread across lots.

Is the PG-TDSON-8-34 package compatible with automated optical inspection (AOI)?

Yes-the package has coplanar leads and a flat thermal pad suitable for standard AOI systems. However, solder joint quality under the exposed drain pad requires X-ray inspection or cross-section verification, as voiding >25% can impair thermal performance and long-term reliability in under-hood applications.