NXP Semiconductors MC34910G5ACR2

Overview

MC34910G5ACR2 from NXP Semiconductors is a LIN System Basis Chip (SBC) integrating a LIN 2.0/2.1 transceiver, dual 50 mA/60 mA high-side drivers, 5.0 V low-dropout regulator (60 mA), configurable window watchdog, and high-voltage analog/logic input (L1) with selectable divider for contact monitoring or wake-up. It operates across -40 °C to +85 °C in automotive body electronics.

For engineers reviewing the MC34910G5ACR2 datasheet, MC34910G5ACR2 pinout, MC34910G5ACR2 application, or MC34910G5ACR2 equivalent, this device supports SPI-controlled diagnostics, LIN bus wake-up, cyclic sense, and Stop/Sleep/Normal mode transitions - critical for power-sensitive automotive subsystems requiring robust fault reporting and ESD-hardened I/O.

Technical Context

The MC34910G5ACR2 implements a fully integrated automotive SBC architecture with dedicated LIN physical layer compliant to ISO 17987-4 and SAE J2602-2, featuring programmable waveshaping and ±6.0 kV IEC 61000-4-2 ESD protection on LIN. Its dual high-side switches support PWM control and open-load/short-circuit diagnostics via SPI-readable status registers.

It features three operating modes: Normal (full functionality), Sleep (VDD off, wake-up via LIN/L1/cyclic sense), and Stop (VDD on, limited current, wake-up via CS/LIN/L1). The 5.0 V regulator includes LVR, overtemperature prewarning (90–140 °C), and shutdown (150–190 °C), while the HVDD output supplies Hall sensors with 20–50 mA current capability.

Key Specifications

Pinout & Package

MC34910G5ACR2 is housed in a 32-pin LQFP package (7 mm × 7 mm, 0.8 mm pitch) with exposed thermal pad. Pin functions are validated per NXP MC33910 documentation, as MC34910G5ACR2 shares identical pinout and electrical behavior except for temperature grade.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar LIN SBC applications.

Compared with MC33910G5ACR2, MC34910G5ACR2 trades junction temperature margin for lower cost and qualification scope, while TLIN2029AQ shifts complexity to external components - making MC34910G5ACR2 optimal for compact, self-contained body-control modules operating below 85 °C.

Availability

MC34910G5ACR2 is available at Aetrix Electronics and suitable for window lift, mirror adjustment, door lock, and sunroof control systems requiring stable component supply, automotive-grade reliability, and long-term production continuity.

Supply support for MC34910G5ACR2 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 focused on secure connectivity solutions for automotive, industrial, and IoT applications, with deep expertise in automotive electronics and functional safety.

The MC34910G5ACR2 belongs to NXP's System Basis Chip family designed specifically for automotive body electronics, integrating LIN communication, power regulation, and local actuation to reduce system cost and PCB footprint in distributed control nodes.

FAQ

What is the maximum LIN data rate supported by the MC34910G5ACR2?

The MC34910G5ACR2 supports LIN data rates up to 100 kbps with configurable waveshaping. Its LIN physical layer complies with LIN 2.0/2.1 and SAE J2602-2, and waveshaping can be disabled for higher-speed operation in noise-controlled environments. The device has been characterized for reliable operation at standard 19.2 kbps and 20 kbps rates used in automotive body networks.

Does the MC34910G5ACR2 include built-in protection against load dump transients?

Yes, the MC34910G5ACR2 withstands load dump transients up to 40 V on VS1 and VS2 pins per ISO 7637-2 Pulse 5a. This eliminates the need for external transient voltage suppressors in most automotive 12 V systems. Protection is inherent in the SMARTMOS process and verified per AEC-Q100 stress testing.

Can the MC34910G5ACR2 operate in Stop mode while maintaining LIN bus wake-up capability?

Yes, in Stop mode the MC34910G5ACR2 keeps VDD powered and retains LIN transceiver functionality, allowing it to detect dominant pulses on the LIN bus and generate an IRQ signal to wake the host MCU. Stop mode current is ≤400 µA at 13.5 V, enabling ultra-low-power listening without full system wake-up.

How is the watchdog timeout configured on the MC34910G5ACR2?

The MC34910G5ACR2 uses the WDCONF pin with an external resistor to set the window watchdog period. Using the formula t_PWD [ms] = [0.466 × (R_EXT − 20)] + 10 (R_EXT in kΩ), a 100 kΩ resistor yields ~47 ms timeout. An open WDCONF pin defaults to ~110 ms. The watchdog must be refreshed within the window to prevent reset.

What is the function of the L1 pin on the MC34910G5ACR2 beyond wake-up triggering?

Beyond digital wake-up, the L1 pin on the MC34910G5ACR2 serves as a high-voltage analog input with selectable 1:1 or 1:3.6 division. When routed through the internal analog multiplexer to ADOUT0, it enables contact monitoring (e.g., window pinch detection) or battery-level sensing without external resistive dividers - reducing BOM count and improving accuracy.