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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Power Management - Specialized

NXP Semiconductors MC34911G5ACR2

Name: MC34911G5ACR2
Brand: NXP Semiconductors
SKU: MC34911G5ACR2
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MC34911G5ACR2

Manufacturer:: NXP Semiconductors

Category:: Power Management - Specialized

Package:: 32-LQFP

Datasheet:: MC34911G5ACR2.pdf

Description:: IC SYSTEM BASIS CHIP LIN 32-LQFP

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Product details

Overview

MC34911G5ACR2 from NXP Semiconductors is a LIN System Basis Chip (SBC) with integrated 5.0 V/60 mA LDO regulator, one protected high-side switch (HS1), two protected low-side switches (LS1/LS2), LIN 2.0/2.1 transceiver, SPI interface, and analog input multiplexer - designed for automotive body electronics control in 12 V systems. It supports Normal/Sleep/Stop operating modes and delivers full diagnostics via SPI.

For engineers reviewing the MC34911G5ACR2 datasheet, MC34911G5ACR2 pinout, MC34911G5ACR2 application, or MC34911G5ACR2 equivalent, key selection criteria include its -40 °C to +85 °C temperature grade, 32-pin LQFP package, LIN bus wake-up capability, PWM-controllable outputs, and integrated voltage sense (VSENSE) with analog multiplexer for contact monitoring and battery sensing.

Technical Context

The MC34911G5ACR2 implements a fully SPI-configurable SBC architecture with independent control of HS1 (50–60 mA) and LS1/LS2 (150–160 mA) outputs, each featuring overcurrent, open-load, short-circuit, and thermal shutdown protection. Its LIN transceiver complies with ISO 17987-4 (LIN 2.0/2.1) and SAE J2602-2, supporting up to 100 kbps with configurable waveshaping.

It integrates a 5.0 V ±2.5% LDO regulator (60 mA typical current limit, 0.25 V dropout at 50 mA), window watchdog with external resistor configuration (8.5–108 ms range), and dual high-voltage inputs (L1/L2) usable as wake-up pins or analog inputs with selectable 1:1 or 1:3.6 divider ratios - all managed through a unified SPI register map with interrupt-driven status reporting.

Key Specifications

Parameter	Value and Actual Design Meaning
LIN Compliance	LIN 2.0, 2.1, and SAE J2602-2 compliant transceiver with ±6 kV ESD on LIN pin per IEC 61000-4-2.
Operating Temp	-40 °C to +85 °C ambient - qualified for passenger compartment automotive applications (non-engine bay).
Regulator Output	5.0 V ±2.5% at up to 60 mA; dropout ≤0.25 V at 50 mA - powers MCU and peripherals directly.
HS1 Switch	High-side driver with R_DS(on) ≤7.0 Ω @ 25 °C, current limit 60–250 mA, open-load detection ≥5 mA.
LS1/LS2 Switches	Low-side drivers with R_DS(on) ≤2.5 Ω @ 25 °C, current limit 160–350 mA, clamp voltage ≤V_SUP+5.0 V.
SPI Interface	Full-duplex SPI up to 4.0 MHz with MISO/MOSI/SCLK/CS; supports diagnostic readback and configuration writes.
Analog Inputs	L1/L2 pins support digital wake-up or analog sensing with 800–2000 kΩ input impedance and 1:1 or 1:3.6 divider ratio.

Pinout & Package

MC34911G5ACR2 is housed in a 32-pin LQFP (7 mm × 7 mm, 0.8 mm pitch) with exposed thermal pad. Pin functions are electrically and thermally optimized for automotive PCB layouts requiring robust ground separation (AGND, LGND, PGND) and transient protection.

Pin/Terminal	Circuit Role	Design Meaning
1 RXD	LIN Receiver Output	Reports LIN bus state to MCU; active-low logic compatible with 5 V I/O.
2 TXD	LIN Transmitter Input	Drives LIN bus via internal driver; accepts 0–5 V logic levels.
3 MISO	SPI Data Output	Tri-state output delivering register contents during SPI reads; high-Z when CS high.
4 MOSI	SPI Data Input	Accepts SPI write commands and configuration data; CMOS-compatible input.
5 SCLK	SPI Clock Input	Master-generated clock up to 4 MHz; synchronizes all SPI transfers.
6 CS	SPI Chip Select	Active-low enable for SPI communication; also serves as wake-up source in Stop mode.
7 ADOUT0	Analog Multiplexer Output	Single-ended analog output carrying scaled L1/L2/VSENSE signals; connects to MCU ADC.
8 PWMIN	PWM Control Input	Global PWM enable signal controlling duty cycle of HS1, LS1, and LS2 simultaneously.
9 RST	Bidirectional Reset I/O	Open-drain output asserting low during internal resets; also accepts external reset pulses.
10 IRQ	Interrupt Request Output	Active-low interrupt signaling wake-up events, watchdog timeout, or fault conditions.
13 LIN	LIN Bus Interface	Single-wire bidirectional LIN physical layer connection; includes built-in pull-up and protection.
14 LGND	LIN Ground Reference	Dedicated ground for LIN transceiver; internally tied to PGND but isolated for EMC performance.
17 LS2 / 19 LS1	Protected Low-Side Outputs	Direct-drive outputs for relays or solenoids; include current limiting, thermal shutdown, and open-load detection.
25 HS1	Protected High-Side Output	Switches load to battery (VS2); supports PWM, diagnostics, and reverse-battery tolerant operation.
26 VS2 / 27 VS1	Power Supply Inputs	VS2 powers HS1 driver; VS1 supplies remaining circuitry - both accept 5.5–27 V with load-dump tolerance to 40 V.
29 VSENSE	Battery Voltage Sense Input	High-voltage input (–27 to 40 V) with internal 5.25× divider; enables battery monitoring without external resistors.
31 VDD	5.0 V Regulator Output	Stable 5 V supply for MCU and logic; requires 2–100 µF ceramic capacitor with 0.1–10 Ω ESR.
32 AGND	Analog Ground Reference	Separate ground for analog circuits (ADC, VSENSE, L1/L2) to minimize noise coupling into sensitive measurements.

Key Features

Feature	Design Value
LIN Transceiver with J2602 Support	Enables conformance to SAE J2602-2 including undervoltage threshold (5.0–6.0 V) and deglitching (35–70 µs), critical for robust automotive network startup.
Configurable Window Watchdog	External resistor (20–200 kΩ) sets timeout from 8.5 to 108 ms - prevents firmware lockup while allowing flexible software timing margins.
Dual High-Voltage Analog/Digital Inputs (L1/L2)	Each pin supports contact monitoring (digital wake-up) or battery-sensing (analog multiplexer) with programmable 1:1 or 1:3.6 scaling - reduces BOM count in door/window modules.
Integrated VSENSE with Protection	Direct connection to battery line with reverse-battery tolerance and self-protection - eliminates need for external series resistor or TVS in most implementations.
Three-Mode Power Management	Normal (full function), Sleep (VDD off, µA-level current), and Stop (VDD on, <400 µA) - enables ultra-low-power always-on monitoring for keyless entry and alarm systems.

Applications

Window Lift Control	Mirror Adjustment
Use Scenario: Precise bidirectional motor control for power windows with anti-pinch detection and position feedback. IC Role / Device Role / Timing Role: MC34911G5ACR2 provides HS1 for motor power path, LS1/LS2 for H-bridge direction control, LIN for ECU communication, and VSENSE for battery health monitoring. Use Value: Integrated diagnostics (open-load, overcurrent, thermal) reduce need for external sensors and simplify compliance with ISO 16750-2 electrical stress testing.	Use Scenario: Compact actuator control for electric side mirrors with fold/unfold and tilt functions. IC Role / Device Role / Timing Role: MC34911G5ACR2 drives mirror motors via LS1/LS2 PWM, uses L1/L2 for switch input sensing, and reports status over LIN at 19.2 kbps. Use Value: Single-chip solution replaces discrete FETs, regulators, and LIN transceivers - cuts PCB area by >40% and eliminates interconnect reliability risks.
Door Lock Actuation	Sunroof Motor Control
Use Scenario: Secure locking/unlocking of vehicle doors using solenoid or motorized latches with tamper detection. IC Role / Device Role / Timing Role: MC34911G5ACR2 uses HS1 to energize lock solenoids, IRQ to signal latch position, and LIN to synchronize with central body controller. Use Value: Built-in short-circuit and overtemperature protection prevents latch coil burnout during jam conditions - extends actuator lifetime beyond 100,000 cycles.	Use Scenario: Smooth, quiet sunroof opening/closing with obstacle detection and auto-reverse functionality. IC Role / Device Role / Timing Role: MC34911G5ACR2 controls sunroof motor via LS1/LS2 H-bridge, monitors current via analog sense, and communicates position via LIN frame payload. Use Value: On-chip current limiting (160–350 mA) and open-load detection (7.5–12 mA) enable precise stall detection without external shunt resistors or op-amps.

Window Lift Control

Mirror Adjustment

Use Scenario: Precise bidirectional motor control for power windows with anti-pinch detection and position feedback.

IC Role / Device Role / Timing Role: MC34911G5ACR2 provides HS1 for motor power path, LS1/LS2 for H-bridge direction control, LIN for ECU communication, and VSENSE for battery health monitoring.

Use Value: Integrated diagnostics (open-load, overcurrent, thermal) reduce need for external sensors and simplify compliance with ISO 16750-2 electrical stress testing.

Use Scenario: Compact actuator control for electric side mirrors with fold/unfold and tilt functions.

IC Role / Device Role / Timing Role: MC34911G5ACR2 drives mirror motors via LS1/LS2 PWM, uses L1/L2 for switch input sensing, and reports status over LIN at 19.2 kbps.

Use Value: Single-chip solution replaces discrete FETs, regulators, and LIN transceivers - cuts PCB area by >40% and eliminates interconnect reliability risks.

Door Lock Actuation

Sunroof Motor Control

Use Scenario: Secure locking/unlocking of vehicle doors using solenoid or motorized latches with tamper detection.

IC Role / Device Role / Timing Role: MC34911G5ACR2 uses HS1 to energize lock solenoids, IRQ to signal latch position, and LIN to synchronize with central body controller.

Use Value: Built-in short-circuit and overtemperature protection prevents latch coil burnout during jam conditions - extends actuator lifetime beyond 100,000 cycles.

Use Scenario: Smooth, quiet sunroof opening/closing with obstacle detection and auto-reverse functionality.

IC Role / Device Role / Timing Role: MC34911G5ACR2 controls sunroof motor via LS1/LS2 H-bridge, monitors current via analog sense, and communicates position via LIN frame payload.

Use Value: On-chip current limiting (160–350 mA) and open-load detection (7.5–12 mA) enable precise stall detection without external shunt resistors or op-amps.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
MC33911G5ACR2	Wider temperature range (–40 °C to +125 °C); identical pinout, register map, and feature set.	Qualified for engine compartment use; higher junction temp rating (150 °C vs. 140 °C) and improved ESD on LIN pin (±8 kV vs. ±6 kV).	Select MC33911G5ACR2 when operating near heat sources (e.g., HVAC modules) or requiring extended reliability under thermal stress.
TLIN1022DSWR	Standalone LIN transceiver (no regulator, no switches); 8-pin SOIC package; supports LIN 2.2A and SAE J2602.	No power management or driver capability - requires external LDO, FETs, and protection components.	Choose TLIN1022DSWR only for minimal-cost LIN node designs where local intelligence and power switching are handled elsewhere.

Compared with MC33911G5ACR2, the MC34911G5ACR2 trades junction temperature margin and LIN ESD robustness for cost and thermal simplicity in cabin applications; versus TLIN1022DSWR, it delivers full system integration - reducing BoM count by 12+ components and eliminating layout-sensitive analog routing.

Availability

MC34911G5ACR2 is available at Aetrix Electronics and suitable for window lift, mirror adjustment, door lock, and sunroof control applications requiring stable component supply across automotive production lifecycles.

Supply support for MC34911G5ACR2 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 markets, with deep expertise in automotive-grade mixed-signal ICs.

The MC34911G5ACR2 belongs to NXP's System Basis Chip family, engineered specifically for cost-sensitive, space-constrained automotive body electronics that require integrated LIN communication, power switching, and diagnostics - without demanding under-hood temperature ratings.

FAQ

What is the maximum operating ambient temperature for the MC34911G5ACR2?

The MC34911G5ACR2 is rated for an operating ambient temperature range of –40 °C to +85 °C, making it suitable for passenger compartment applications such as door modules and interior lighting controllers. This differs from the MC33911G5ACR2, which supports up to +125 °C for under-hood use. The MC34911G5ACR2's thermal shutdown triggers at 140–180 °C junction temperature, with hysteresis of 10 °C.

Does the MC34911G5ACR2 support SAE J2602-2 conformance?

Yes, the MC34911G5ACR2 supports SAE J2602-2 conformance when the DIS_J2602 bit is cleared (0). It meets the specification's LIN undervoltage threshold (5.0–6.0 V), hysteresis (400 mV), and deglitching requirements (35–70 µs). This ensures reliable network initialization in vehicles with variable battery conditions, and is validated per the LIN Conformance Test Specification August 2004.

How is the watchdog timer configured on the MC34911G5ACR2?

The MC34911G5ACR2 uses the WDCONF pin with an external resistor (20–200 kΩ) to configure its window watchdog period, ranging from 8.5 ms (20 kΩ) to 108 ms (200 kΩ). The formula is t_PWD[ms] = [0.466 × (R_EXT – 20)] + 10. An open WDCONF pin yields ~110–205 ms. This resistor-based tuning allows precise alignment with firmware execution windows without requiring additional MCU resources.

Can the L1 and L2 pins on the MC34911G5ACR2 be used for analog sensing?

Yes, the L1 and L2 pins on the MC34911G5ACR2 serve dual roles: digital wake-up inputs and analog inputs via the internal analog multiplexer. Each pin offers selectable divider ratios (1:1 or 1:3.6) to scale input voltage for ADC measurement, with input impedance of 800–2000 kΩ. The resulting signal appears on ADOUT0, enabling battery voltage monitoring, switch position sensing, or potentiometer interface without external components.

What protection features are included for the HS1 and LS1/LS2 outputs on the MC34911G5ACR2?

The MC34911G5ACR2 provides comprehensive protection for all driver outputs: HS1 includes overcurrent limiting (60–250 mA), open-load detection (≥5 mA), short-circuit shutdown (threshold at V_SUP – 2.0 V), and thermal shutdown (140–180 °C). LS1/LS2 add active energy clamping (V_SUP + 2.0 to +5.0 V) and similar current/thermal protections. All faults generate SPI-accessible flags (e.g., HS1CL, LSxOP) and can assert IRQ.

MC34911G5ACR2 Specifications

Product attributes: Attribute value

Manufacturer:: NXP Semiconductors

Series:: -

Package/Case:: 32-LQFP

Packaging:: Tape & Reel (TR)

Product Status:: Active

Applications:: System Basis Chip

Current - Supply:: 4.5mA

Voltage - Supply:: 5.5V ~ 27V

Operating Temperature:: -40°C ~ 85°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 32-LQFP (7x7)

MC34911G5ACR2 FAQ

1.How can I place an order for MC34911G5ACR2 through Aetrix?

Please submit a Request for Quotation (RFQ) for MC34911G5ACR2 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for MC34911G5ACR2 reliable?

The price and inventory of MC34911G5ACR2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC34911G5ACR2 is usually 5 days.

3.What payment methods are accepted for MC34911G5ACR2?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC34911G5ACR2 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MC34911G5ACR2?

MC34911G5ACR2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MC34911G5ACR2 order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for MC34911G5ACR2?

For technical support, including MC34911G5ACR2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC34911G5ACR2 requirements.

6.How does Aetrix verify that MC34911G5ACR2 is sourced from the original manufacturer or authorized distributors?

All MC34911G5ACR2 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MC34911G5ACR2 meets industry standards.

7.What is the process for return or replacement of MC34911G5ACR2?

All MC34911G5ACR2 units undergo pre-shipment inspection (PSI). If there is an issue with MC34911G5ACR2, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The MC34911G5ACR2 part is unused and in its original packaging.

Return procedure for MC34911G5ACR2:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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