Infineon Technologies IRF7701

Overview

IRF7701 from Infineon Technologies (formerly International Rectifier) is a P-channel TSSOP-8 packaged HEXFET® Power MOSFET rated for -12 V drain-source voltage, 10 A continuous drain current at -4.5 V gate drive, and 11 mΩ typical R_DS(on) at V_GS = -4.5 V. It serves as a low-side load switch in portable battery management systems where space and thermal efficiency are critical.

For engineers reviewing the IRF7701 datasheet, IRF7701 pinout, IRF7701 application, or IRF7701 equivalent, key selection criteria include its ultra-low on-resistance at low gate voltages, TSSOP-8 footprint reduction versus SO-8, junction-to-ambient thermal resistance of 83 °C/W, and integrated body diode with 52 ns reverse recovery time.

Technical Context

The IRF7701 employs planar HEXFET® process technology to achieve high cell density and low specific on-resistance. Its P-channel architecture enables simple high-side or low-side switching without level-shifting circuitry when used with negative gate drive.

Thermal performance is optimized for surface-mount operation on 1-inch² copper board, supporting 1.5 W power dissipation at 25°C ambient and linear derating at 12 mW/°C above 25°C. The device integrates a robust body diode with 1.2 V forward voltage at -1.5 A and controlled reverse recovery characteristics (Q_rr = 53 nC).

Key Specifications

Pinout & Package

TSSOP-8 package: 3.0 mm × 3.0 mm footprint, <1.1 mm profile, 0.65 mm lead pitch, exposed drain pad for thermal enhancement.

Key Features

Applications

Equivalent & Alternatives

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

Compared with Si7157DP and DMN2013LFG, the IRF7701 delivers the lowest R_DS(on) in TSSOP-8, best thermal resistance (83 °C/W), and highest continuous current (10 A), making it optimal for space- and thermally constrained 12 V load switching.

Availability

IRF7701 is available at Aetrix Electronics and suitable for battery protection circuits, USB power switching, PCMCIA card control, and portable medical sensor gating requiring stable component supply and long-term industrial availability.

Supply support for IRF7701 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 is a global semiconductor leader specializing in power management, automotive, and industrial control ICs and discrete devices.

The IRF7701 belongs to Infineon's HEXFET® Power MOSFET product line, engineered for high-efficiency, low-voltage DC load switching in space-constrained portable and battery-powered systems.

FAQ

What is the maximum safe operating voltage for IRF7701?

The IRF7701 has a guaranteed drain-source breakdown voltage (V_(BR)DSS) of -12 V at 250 µA drain current. Operation beyond this rating risks avalanche failure. Derating is required above 25°C: the breakdown voltage decreases by 6 mV/°C, so at 100°C junction temperature, the effective rating drops to approximately -11.55 V.

Can IRF7701 be used in high-frequency PWM applications?

Yes - with 69 nC total gate charge and 21 nC Miller charge, the IRF7701 supports PWM switching up to 500 kHz in well-designed gate-drive circuits. Its 52 ns reverse recovery time and 1120 pF reverse transfer capacitance minimize shoot-through risk in synchronous topologies when paired with appropriate dead-time control.

Does IRF7701 require a gate resistor for stability?

A series gate resistor (typically 10–47 Ω) is recommended to dampen ringing caused by gate-drain capacitance and PCB inductance. Without it, oscillation during turn-on/turn-off may exceed V_GS absolute maximum (±8 V), risking gate oxide damage. The resistor value balances switching speed against EMI and gate driver stress.

How does the TSSOP-8 package affect thermal performance compared to SO-8?

The TSSOP-8 package achieves 83 °C/W junction-to-ambient thermal resistance on a 1-inch² copper board - comparable to SO-8 - despite its smaller footprint, due to optimized internal die attach and exposed drain pad. However, its thinner profile reduces heat spreading volume, so thermal vias under the drain pad are essential for sustained 10 A operation.