Melexis Technologies NV MLX81150LPF-DAA-000-RE

Overview

MLX81150LPF-DAA-000-RE from Melexis is a monolithic LIN slave IC for automotive relay and DC motor control, integrating a 16-bit RISC CPU, dual integrated relay drivers (Ron < 7 Ω @ 150°C), 4-channel 16-bit PWM, 10-bit ADC with DMA, and LIN 2.x/SAE J2602 transceiver. It operates from 5.5–18 V (down to 3.9 V functional), supports -40°C to 150°C ambient, and targets window lifters, sunroofs, and fuel pumps.

For engineers reviewing the MLX81150LPF-DAA-000-RE datasheet, pinout, applications, or equivalent options, key selection considerations include its integrated relay drivers with freewheeling, LIN-certified protocol stack, sleep-mode current < 30 µA, and QFN32 5×5 mm package with dedicated high-voltage I/Os for direct switch monitoring and shunt current sensing.

Technical Context

The MLX81150LPF-DAA-000-RE implements a LIN 2.x slave node with on-chip transceiver and Melexis-certified protocol software, enabling direct connection to automotive LIN buses without external level-shifting. Its dual relay drivers support independent PWM control and built-in freewheeling diodes, eliminating external flyback components.

It features a dual-domain power architecture: VS-supplied high-voltage domain (KEY[7:0], REL[2:1], SENSE[2:1], PWM[2:1]) and regulated low-voltage domains (VDDA ~3.3 V, VDDD ~1.8 V). The 10-bit ADC supports fast (<6 µs) conversions across multiple channels with selectable references and DMA access to RAM, enabling real-time motor current and battery voltage monitoring.

Key Specifications

Pinout & Package

MLX81150LPF-DAA-000-RE is housed in a thermally enhanced QFN32 5×5 mm package with exposed thermal pad, optimized for automotive under-hood thermal environments and reflow soldering per IPC/JEDEC J-STD-020.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar LIN slave motor control applications.

Compared with MLX81150LLW-DAA-000-RE, the MLX81150LPF-DAA-000-RE is functionally identical but supplied in a different reel format; compared with MC33816, it delivers higher integration (integrated relay drivers, single-chip solution) and lower total system cost for dedicated dual-relay or DC motor control, though with less flexibility for custom gate-drive topologies.

Availability

MLX81150LPF-DAA-000-RE is available at Aetrix Electronics and suitable for automotive body electronics, window lifter modules, and sunroof actuators requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MLX81150LPF-DAA-000-RE 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

Melexis is a Belgian semiconductor company specializing in magnetic sensing, automotive ICs, and embedded motor control solutions, with design centers in Europe and manufacturing partnerships worldwide.

The MLX81150 product line delivers monolithic LIN slave controllers for automotive relay and DC motor actuation, designed specifically to replace multi-chip discrete solutions in body electronics with high integration, AEC-Q100 qualification, and LIN protocol compliance.

FAQ

What LIN protocol versions does the MLX81150LPF-DAA-000-RE support?

The MLX81150LPF-DAA-000-RE supports LIN 2.x and SAE J2602 protocols with an integrated certified LIN transceiver and on-chip protocol stack provided by Melexis. It operates exclusively as a LIN slave node and does not implement master functionality. The protocol software is pre-certified, eliminating the need for customer-level LIN stack development or validation.

Does the MLX81150LPF-DAA-000-RE require external freewheeling diodes for its relay drivers?

No, the MLX81150LPF-DAA-000-RE does not require external freewheeling diodes. Its integrated REL1 and REL2 outputs include internal freewheeling functionality, enabling direct connection to 12 V relay coils. This is confirmed in the Pin Description section (Page 5), which specifies "Relay driver with free wheel function" for both pins, reducing BOM count and PCB footprint.

Can the MLX81150LPF-DAA-000-RE operate during automotive cranking conditions?

Yes, the MLX81150LPF-DAA-000-RE maintains functionality down to 3.9 V supply voltage, as stated in Section 3.1 (Operating Conditions). While nominal operation begins at 5.5 V, the IC continues digital operation and retains memory content below that threshold - making it suitable for automotive cranking events where battery voltage dips transiently. Analog performance may drift, but core control functions remain guaranteed.

How is firmware updated on the MLX81150LPF-DAA-000-RE in the field?

Firmware updates for the MLX81150LPF-DAA-000-RE are performed via In-Module Programming (IMP) using the LIN pin and a proprietary Melexis fast protocol. No external debug interface (e.g., JTAG or SWD) is required. This allows field updates through the existing LIN bus infrastructure, supporting post-deployment feature enhancements or bug fixes without hardware modification.

What is the purpose of the PS pin on the MLX81150LPF-DAA-000-RE?

The PS pin on the MLX81150LPF-DAA-000-RE is a switchable high-side supply output (<15 V, <20 mA) used to power external components such as Hall effect sensors. It is programmable via firmware and can be enabled or disabled during active or sleep modes - allowing precise control of sensor biasing to reduce system power consumption, especially in standby states where Hall sensors are not needed.