NXP Semiconductors MC50XS4200DEKR2

Overview

MC50XS4200DEKR2 from NXP Semiconductors is a dual 24 V, 50 mΩ high-side switch IC designed for truck and bus load control. It integrates two independently controllable power switches, 16-bit SPI interface (up to 8 MHz), programmable slew rates, dynamic overcurrent threshold profiling, and autonomous operation via internal clock. It drives bulbs, solenoids, and DC motors in harsh transportation environments.

For engineers reviewing the MC50XS4200DEKR2 datasheet, MC50XS4200DEKR2 pinout, MC50XS4200DEKR2 application, or MC50XS4200DEKR2 equivalent, this page delivers verified technical context, real-world design meanings for key specs, validated pin functions, confirmed alternative parts with documented functional differences, and supply-ready availability details - all grounded in NXP's Rev. 7.0 datasheet and official packaging data.

Technical Context

The MC50XS4200DEKR2 implements two independent SMARTMOS high-side switches with R_DS(on) ≤ 41 mΩ at T_J = 25 °C and ≤ 100 mΩ at 150 °C. Each channel supports programmable slew rate (high/medium/low), autonomous PWM timing via internal oscillator, and separate bulb vs. DC motor latched overcurrent handling.

Its SPI-controlled architecture enables full diagnostics (open-load detection in ON/OFF states, current/temperature sensing via CSNS, fault status on FSB/FSOB), fail-safe mode upon MCU communication loss, and robust protection including overvoltage (42 V shutdown), undervoltage (6.0 V cutoff), overtemperature (175 °C shutdown), and severe short-circuit detection up to 990 cm wiring length at low slew rate.

Key Specifications

Pinout & Package

MC50XS4200DEKR2 is housed in a 32-pin SOIC-EP (10 mm × 11 mm) package with exposed thermal pad (VPWR). The package complies with Pb-free requirements (JEDEC J-STD-020) and supports reflow soldering with MSL3 rating.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-side switch applications.

Compared with MC50XS4200BEKR2, the MC50XS4200DEKR2 offers identical performance and qualification - differing only in orderable suffix. Against MC33883DG, it delivers dual-channel integration, 41 mΩ R_DS(on), and programmable slew rates - enabling higher efficiency, better EMI control, and reduced system component count in multi-load transportation systems.

Availability

MC50XS4200DEKR2 is available at Aetrix Electronics and suitable for truck lighting control, bus HVAC actuator drive, off-highway solenoid management, and trailer ABS module load management requiring stable component supply across extended temperature and voltage ranges.

Supply support for MC50XS4200DEKR2 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

NXP Semiconductors is a global semiconductor company specializing in secure connectivity solutions for automotive, industrial, and IoT applications, with leadership in high-reliability power management and vehicle networking.

The MC50XS4200DEKR2 belongs to NXP's SMARTMOS high-side switch product line, engineered specifically for 24 V commercial vehicle systems demanding robust protection, diagnostic richness, and seamless integration into existing ECU architectures via SPI.

FAQ

What is the maximum continuous current rating per channel for the MC50XS4200DEKR2?

The MC50XS4200DEKR2 supports up to 1.65 A steady-state current per channel, validated across its full operating temperature range (-40 °C to 125 °C ambient) and VPWR supply range (8–36 V). This rating assumes proper PCB thermal design using the exposed VPWR pad to achieve R_θJA ≤ 24 °C/W. At junction temperatures above 150 °C, derating applies per the thermal characteristics table in the datasheet.

Does the MC50XS4200DEKR2 support open-load detection for LED loads?

Yes, the MC50XS4200DEKR2 supports open-load detection in both ON and OFF states, with a specified 7.0 mA typical threshold in ON state - explicitly validated for LED applications per the datasheet. This capability enables reliable detection of broken LED strings or disconnected fixtures without external components, leveraging the device's internal current-sense architecture and configurable CSNS ratio.

How does the MC50XS4200DEKR2 handle communication loss with the host microcontroller?

Upon loss of SPI communication, the MC50XS4200DEKR2 automatically enters Fail-safe operation mode - asserting the FSOB pin and retaining its last-configured output states (HS0/HS1). All protective functions (overcurrent, overtemperature, undervoltage) remain fully active. This behavior ensures continued safe operation without requiring host intervention, making MC50XS4200DEKR2 suitable for ASIL-B–relevant subsystems.

What package type and thermal characteristics apply to the MC50XS4200DEKR2?

The MC50XS4200DEKR2 uses a 32-pin SOIC-EP package (10 mm × 11 mm) with an exposed VPWR pad. Its thermal resistance is R_θJC = 2.7 °C/W (junction-to-case) and R_θJA = 24 °C/W (junction-to-ambient) on a standard four-layer board. These values enable sustained 1.65 A operation with appropriate PCB copper area under the exposed pad, as defined in NXP's JEDEC JESD51-6/7 compliant layout guidelines.

Can the MC50XS4200DEKR2 drive both resistive and inductive loads?

Yes, the MC50XS4200DEKR2 is explicitly qualified for resistive (e.g., bulbs), capacitive, and inductive (e.g., solenoids, DC motors) loads per its datasheet Applications section. Its programmable slew rates, integrated clamping diodes, and severe short-circuit detection (up to 990 cm wiring length at low slew) provide robust handling of inductive kickback and motor stall currents - meeting ISO 16750-2 and ISO 7637-2 requirements for commercial vehicles.