Infineon Technologies BTM7740GXUMA1

Overview

BTM7740GXUMA1 from Infineon Technologies is a quad-channel automotive power switch IC integrating two high-side and two low-side SMART SIPMOS® D-MOS drivers in a single PG-DSO-28-22 package. It supports configurable H-bridge or independent quad-switch operation, delivers 8 A peak output current, features 110 mΩ typical high-side R_DS(on) at 25°C, and includes integrated short-circuit, overtemperature, and undervoltage protection for DC motor control in 12 V/24 V systems.

For engineers reviewing the BTM7740GXUMA1 datasheet, BTM7740GXUMA1 pinout, BTM7740GXUMA1 application, or BTM7740GXUMA1 equivalent, key selection criteria include dual high-side/low-side channel independence, status flag diagnostics, thermal shutdown hysteresis, PWM capability up to 1 kHz, and AEC-Q100 qualification for under-hood automotive use.

Technical Context

The device implements three vertically stacked SMART SIPMOS® dies-two high-side switches sharing one lead frame (DHVS) and two low-side switches on separate lead frames (DL1/DL2)-enabling flexible routing of power paths and thermal isolation. Each switch integrates CMOS gate drivers, ESD-protected TTL/CMOS-compatible inputs (IH1/IH2/IL1/IL2), and analog sense inputs for current monitoring.

Protection logic uses internal op-amps to monitor V_DS for short-circuit detection, junction temperature sensors with hysteresis for thermal shutdown, and comparator-based undervoltage lockout (V_UVON = 4.5 V, V_UVOFF = 3.8 V). The open-drain ST pin reports faults including overtemperature, short-to-ground, short-to-V_S, and overload via active-low assertion.

Key Specifications

Pinout & Package

BTM7740GXUMA1 is housed in a thermally enhanced PG-DSO-28-22 package with three isolated lead frames (HS, LS1, LS2) for optimized power dissipation and channel separation. Pin assignment reflects functional grouping: DHVS pins (5,10,19,24) serve as shared high-side drain/power supply; DL1 (1,3,25,28) and DL2 (12,14,15,18) are dedicated low-side drains; SH1/SH2 and SL1/SL2 are respective source terminals; IH1/IH2 and IL1/IL2 provide digital/analog control inputs; ST is the diagnostic flag output.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BTS716G and VND7050AJ, BTM7740GXUMA1 uniquely integrates both high- and low-side switches with shared diagnostics in one package, eliminating external FETs and reducing PCB footprint by >40% in H-bridge motor control designs.

Availability

BTM7740GXUMA1 is available at Aetrix Electronics and suitable for automotive seat actuation, engine cooling fan control, electric power steering assist, and heated windshield systems requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for BTM7740GXUMA1 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 German semiconductor manufacturer specializing in power management, automotive electronics, and industrial control ICs, with global manufacturing and quality certification aligned to IATF 16949.

The TrilithIC family, including BTM7740GXUMA1, was designed to consolidate multi-channel power switching, protection, and diagnostics into single-package solutions for next-generation automotive body electronics and chassis control units.

FAQ

What is the maximum allowable junction temperature for continuous operation?

The BTM7740GXUMA1 has an absolute maximum junction temperature of 150°C. Continuous operation is rated up to 125°C junction temperature under specified thermal conditions (R_thJA = 30 K/W). Thermal shutdown activates at approximately 165°C with 15°C hysteresis, ensuring safe recovery before re-enabling outputs.

Can BTM7740GXUMA1 drive inductive loads without external flyback diodes?

Yes - the device integrates internal clamp diodes across each high-side switch, enabling safe freewheeling of inductive loads such as DC motors. These diodes are rated for continuous operation at 8 A peak and eliminate the need for external catch diodes in most automotive applications.

How does the status flag (ST) differentiate between fault types?

The ST pin does not encode fault type digitally; it asserts low for any active fault (overtemperature, short-circuit to ground/V_S, or overload). Fault discrimination requires correlating ST assertion timing with system conditions and monitoring IL1/IL2 analog currents, as described in Section 6 of the datasheet.

Is BTM7740GXUMA1 pin-compatible with earlier BTM7740G versions?

Yes - BTM7740GXUMA1 is the tape-and-reel packaged variant of the BTM7740G die, sharing identical pinout, electrical characteristics, and thermal performance. The 'XUMA1' suffix denotes packaging format (reel, 1000 pcs) and does not indicate functional revision.