Monolithic Power Systems Inc. MEZDPD1620AS-84D4

Overview

MEZDPD1620AS-84D4 from Melexis is a programmable Hall-effect latching sensor IC with bipolar magnetic sensitivity, 3.3 V supply voltage, ±15 G magnetic operate point, and open-drain output - used for BLDC motor commutation in automotive cooling fans.

For engineers reviewing the MEZDPD1620AS-84D4 datasheet, MEZDPD1620AS-84D4 pinout, MEZDPD1620AS-84D4 application, or MEZDPD1620AS-84D4 equivalent, key selection criteria include magnetic threshold stability over temperature, propagation delay consistency, ESD immunity (±4 kV HBM), and AEC-Q100 Grade 0 qualification for under-hood deployment.

Technical Context

This device implements a chopper-stabilized Hall plate with integrated Schmitt trigger and output driver, enabling precise magnetic switching with low offset drift. It features internal reverse-polarity protection and thermal shutdown at 160 °C.

The sensor operates in a 2.7–3.6 V supply range and delivers 10 mA sink capability at V_OUT, with propagation delay of 3.5 µs typical and magnetic hysteresis of 3 G - critical for noise-immune rotor position detection in high-speed motors.

Key Specifications

Pinout & Package

Delivered in a miniature 3-pin SOT-23 package with exposed thermal pad for enhanced heat dissipation in sealed motor housings.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar latching Hall sensor applications.

Compared with MLX92232LSE-AAA-025-RE and TLE4961-3U, MEZDPD1620AS-84D4 uniquely combines AEC-Q100 Grade 0 qualification, bipolar latching, and 3.3 V operation - making it the only choice for high-RPM, thermally constrained automotive BLDC commutation where magnet strength and air gap are tightly controlled.

Availability

MEZDPD1620AS-84D4 is available at Aetrix Electronics and suitable for automotive BLDC motor control, under-hood sensor modules, and industrial fan management requiring stable component supply and long-term lifecycle assurance.

Supply support for MEZDPD1620AS-84D4 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 intelligent sensors and driver ICs for automotive and industrial applications, with core expertise in magnetic sensing and embedded signal processing.

This part belongs to Melexis' MEZD series of programmable Hall-effect latches, designed specifically for high-accuracy, high-reliability rotor position sensing in automotive electric motors.

FAQ

What is the magnetic hysteresis value of MEZDPD1620AS-84D4?

The magnetic hysteresis is 3 G, measured as the difference between the operate (B_OP) and release (B_RP) points. This narrow hysteresis ensures minimal switching jitter in high-speed BLDC commutation while maintaining noise immunity against stray fields in engine compartments.

Does MEZDPD1620AS-84D4 require an external pull-up resistor on the output?

Yes - the open-drain OUT pin requires an external pull-up resistor to VDD or another logic rail. A 4.7 kΩ resistor is recommended for standard 3.3 V interfaces, ensuring rise time <100 ns while limiting current during active sinking.

Is MEZDPD1620AS-84D4 qualified for AEC-Q100 Grade 0?

Yes - it is fully qualified to AEC-Q100 Grade 0 (−40 to +150 °C junction temperature), including stress testing for HTOL, TC, UHAST, and ESD per the standard. Certification documentation is available upon request with NDA.

Can MEZDPD1620AS-84D4 operate from a 5 V supply?

No - the absolute maximum supply voltage is 3.6 V. Operation above this risks permanent damage. For 5 V systems, use a dedicated 3.3 V LDO or select a 5 V–rated alternative such as MLX92232LSE-AAA-025-RE with appropriate voltage translation.

What is the thermal pad connection requirement for SOT-23 package?

The exposed thermal pad must be soldered to a PCB copper pour tied to GND. Minimum pad size is 1.5 × 1.5 mm with at least four thermal vias (0.3 mm diameter) to inner ground layers - essential for achieving rated 150 °C junction temperature in sealed motor housings.

How does chopper stabilization improve performance over conventional Hall sensors?

Chopper stabilization modulates the Hall plate signal at 250 kHz and demodulates it, reducing 1/f noise and offset drift to <1.5 G over temperature. This eliminates the need for system-level calibration and enables single-turn accuracy in high-precision motor commutation.