NXP Semiconductors MC17XS6400DEKR2

Overview

MC17XS6400DEKR2 from NXP Semiconductors is a penta-channel high-side power switch IC designed for robust load control, protection, and diagnostics in 7–30 V automotive and industrial systems. It integrates five 17 mΩ high-side MOSFETs, 16-bit 5.0 MHz SPI interface, programmable current sensing (CSNS), fail-safe direct-input control (IN1–IN4), and reverse polarity protection down to –16 V. It drives LED lighting, halogen lamps, and DC motors with precise PWM duty cycle and overcurrent profiling.

For engineers reviewing the MC17XS6400DEKR2 datasheet, MC17XS6400DEKR2 pinout, MC17XS6400DEKR2 application, or MC17XS6400DEKR2 equivalent, key selection considerations include its SOIC32-EP package, 17 mΩ R_DS(on) per channel, ultra-low sleep current (<5 μA), SPI-configurable thermal/overcurrent thresholds, and compatibility with daisy-chained multi-device architectures.

Technical Context

The MC17XS6400DEKR2 implements SMARTMOS technology with integrated charge pump (CP pin) enabling full gate drive across 7–30 V VPWR range. Its architecture supports independent channel control via SPI register programming-including 8-bit PWM duty cycle, frequency prescaling, and dynamic overcurrent window timing-while maintaining real-time analog feedback via CSNS and synchronized A/D sampling via CSNS SYNCB.

In Fail mode, IN1–IN4 directly assert OUT1–OUT4 without SPI dependency, while OUT5 and OUT6 are forced off; all channels retain active clamp, open-load detection, and thermal shutdown. The device uses dual supply domains: VPWR powers internal regulators, analog blocks, and high-side drivers, while VCC (4.5–5.5 V) exclusively supplies SPI I/O and CLK/OUT6 logic.

Key Specifications

Pinout & Package

MC17XS6400DEKR2 is housed in a 32-pin SOIC with exposed thermal pad (SOIC32-EP), optimized for PCB heat dissipation and mechanical stability in vibration-prone environments. Pin numbering follows standard SOIC layout with pins 1–32 arranged in two rows.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC17XS6400DEKR2, MC17XSG500DEK offers identical electrical and functional behavior but differs only in packaging format, whereas MC07XSG517DEK expands channel count and current capacity at the cost of larger footprint and different pin assignment - making it suitable for higher-power or multi-stage load architectures.

Availability

MC17XS6400DEKR2 is available at Aetrix Electronics and suitable for automotive exterior lighting, industrial motor control, and LED lighting systems requiring stable component supply, long-term lifecycle assurance, and AEC-Q100-aligned reliability.

Supply support for MC17XS6400DEKR2 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 leader specializing in secure connectivity solutions for automotive, industrial, and IoT applications, with deep expertise in power management and system-on-chip integration.

The MC17XS6400DEKR2 belongs to the MC32XSG family of multi-purpose high-side switches engineered for intelligent load control in harsh 12/24 V environments - emphasizing diagnostic richness, fail-safe resilience, and software-defined configurability.

FAQ

What is the maximum continuous output current supported by MC17XS6400DEKR2?

The MC17XS6400DEKR2 supports up to 5.5 A continuous current per channel (OUT1–OUT5) when operated within its thermal limits - verified at T_A = 125 °C with R_ΘJA = 17.4 °C/W on a four-layer board. Actual current capability depends on PCB copper area, airflow, and ambient temperature; design must ensure junction temperature remains ≤150 °C.

Does MC17XS6400DEKR2 support daisy-chaining multiple devices via SPI?

Yes, MC17XS6400DEKR2 supports daisy-chaining through its full-duplex SPI interface: the SO pin of one device connects to the SI pin of the next, enabling single-MCU control of multiple MC17XS6400DEKR2 units with minimal GPIO usage. Each device retains independent register addressing and fault reporting within the chain.

How does MC17XS6400DEKR2 handle reverse battery connection?

MC17XS6400DEKR2 withstands –16 V reverse polarity on the VPWR pin without damage or latch-up, thanks to integrated protection circuitry. During reverse connection, internal supply rails remain safeguarded and OUT1–OUT5 are automatically enabled to limit power dissipation in incandescent loads - eliminating need for external reverse-polarity diodes.

What is the function of the CSNS and CSNS SYNCB pins on MC17XS6400DEKR2?

The CSNS pin outputs an analog voltage proportional to selected channel current, supply voltage, or die temperature - programmable via SPI. CSNS SYNCB is an open-drain synchronization signal that pulses low to align MCU ADC sampling with CSNS data validity, ensuring accurate current measurement timing without software timing overhead in MC17XS6400DEKR2 systems.

Can MC17XS6400DEKR2 operate without VCC applied?

No - MC17XS6400DEKR2 requires both VPWR and VCC to function fully. While VPWR powers internal regulators and high-side drivers, VCC (4.5–5.5 V) is mandatory for SPI communication, CLK output, and OUT6 logic. Without VCC, SPI registers become inaccessible and SO/CLK/OUT6 remain non-functional, though basic protection features remain active.