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

NXP Semiconductors MC34911G5AC

Name: MC34911G5AC
Brand: NXP Semiconductors
SKU: MC34911G5AC
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MC34911G5AC

Manufacturer:: NXP Semiconductors

Category:: Power Management - Specialized

Package:: 32-LQFP

Datasheet:: MC34911G5AC.pdf

Description:: IC SYSTEM BASIS CHIP LIN 32-LQFP

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Product details

Overview

MC34911G5AC 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, and SPI-controlled diagnostics - designed for automotive body electronics such as window lift and mirror control in -40 °C to +85 °C ambient environments.

For engineers reviewing the MC34911G5AC datasheet, MC34911G5AC pinout, MC34911G5AC application, or MC34911G5AC equivalent, this page delivers verified technical context, validated pin functions, confirmed operating modes (Normal/Sleep/Stop), LIN conformance to SAE J2602-2, and real-world electrical specs including R_DS(on) ≤ 7.0 Ω (HS1, T_J = 25 °C) and 2.5 Ω (LS1/LS2, T_J = 25 °C).

Technical Context

The MC34911G5AC implements a fully SPI-configurable system basis architecture with three distinct power states: Normal (full functionality), Sleep (VDD off, wake-up via LIN bus or L1/L2 inputs), and Stop (VDD on, limited current, wake-up via CS, LIN, or forced reset). Its LIN physical layer complies with ISO 17987-4 and SAE J2602-2, supporting up to 100 kbps with configurable waveshaping and ±6.0 kV ESD protection on the LIN pin per IEC 61000-4-2.

It integrates dual high-voltage analog/digital wake-up inputs (L1/L2) with selectable 1:1 or 1:3.6 voltage division, an analog multiplexer feeding ADOUT0, and a window watchdog configurable via external resistor (20–200 kΩ) for timing accuracy of ±15%. All HS/LS outputs support PWM control with built-in open-load, short-circuit, and overtemperature detection flags reported via SPI.

Key Specifications

Parameter	Value and Actual Design Meaning
LIN Compliance	SAE J2602-2 and LIN Protocol Specification 2.0/2.1 - ensures interoperability in automotive LIN networks without protocol translation.
Operating Temp Range	-40 °C to +85 °C - qualified for passenger compartment and non-engine bay automotive applications.
VDD Regulator	5.0 V ±2.5%, 60 mA max output - powers MCU or peripherals with fault reporting (LVR, overvoltage, undervoltage).
HS1 Output	R_DS(on) ≤ 7.0 Ω @ 25 °C, 50 mA load - enables direct drive of small DC motors or solenoids with thermal shutdown at 140 °C.
LS1/LS2 Outputs	R_DS(on) ≤ 2.5 Ω @ 25 °C, 150 mA load - supports relay or LED driver loads with active energy clamping (V_CLAMP = V_SUP +2.0 V).
SPI Interface	Up to 4.0 MHz clock rate, full-duplex - allows real-time configuration and diagnostic readback with <10 μs command-to-output latency.
Wake-up Inputs	L1/L2 support digital wake-up and analog sensing (divided ratio selectable) - eliminates need for external ADC or comparator in contact monitoring.

Pinout & Package

MC34911G5AC is housed in a 32-pin LQFP package (7 mm × 7 mm, 0.8 mm pitch) with exposed thermal pad. Pin assignments are identical to MC33911G5AC per NXP documentation, with NC pins (11, 20, 21, 24, 28, 30) unconnected and requiring no PCB routing.

Pin/Terminal	Circuit Role	Design Meaning
1 RXD	LIN Receiver Output	Reports LIN bus voltage state to MCU; logic-level signal referenced to VDD.
2 TXD	LIN Transmitter Input	Controls LIN bus driver state; accepts CMOS-level SPI-driven signals.
3 MISO	SPI Data Output	Tri-state output delivering register reads; high-impedance when CS is high.
4 MOSI	SPI Data Input	Accepts SPI write commands and configuration data at up to 4 MHz.
5 SCLK	SPI Clock Input	Synchronizes all SPI transfers; supports master clock frequencies ≤ 4.0 MHz.
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	Delivers scaled voltage from L1/L2/VSENSE; used for battery monitoring or wake-up threshold sensing.
8 PWMIN	PWM Control Input	Global input enabling synchronized PWM modulation across HS1, LS1, and LS2 outputs.
9 RST	Bidirectional Reset I/O	Drives low during internal resets (LVR, watchdog timeout); can be asserted externally.
10 IRQ	Interrupt Output	Active-low signal indicating wake-up events or fault conditions (e.g., HS1OP, LS1CL).
12 WDCONF	Watchdog Configuration	External resistor sets watchdog period (8.5–205 ms); open pin disables watchdog.
13 LIN	LIN Bus Interface	Single-wire bidirectional bus connection with integrated transceiver and ±6 kV ESD protection.
14 LGND	LIN Ground	Internally tied to PGND; provides dedicated ground reference for LIN signaling integrity.
17 LS2 / 19 LS1	Low-Side Switch Outputs	Protected 150 mA drivers with open-load detection, short-circuit shutdown, and thermal foldback.
25 HS1	High-Side Switch Output	Protected 60 mA driver with current limiting, open-load flag, and 140 °C thermal shutdown.
26 VS2 / 27 VS1	Battery Supply Inputs	VS2 powers HS1 directly; VS1 supplies remaining circuitry - both tolerate load dump up to 40 V.
29 VSENSE	Battery Voltage Sense	Direct connection to battery line (with 10 kΩ series resistor recommended); 5.25× internal divider.
31 VDD	Regulated 5.0 V Output	Supplies MCU or logic; requires 2–100 µF output capacitor with 0.1–10 Ω ESR.
32 AGND	Analog Ground	Separate ground for analog circuits (ADOUT0, VSENSE, temperature sensor) to minimize noise coupling.

Key Features

Feature	Design Value
LIN 2.0/2.1 + J2602-2 compliance	Enables drop-in integration into certified automotive LIN networks without protocol stack modification.
Configurable window watchdog	External resistor (20–200 kΩ) sets timeout from 8.5 ms to 205 ms - supports safety-critical timing supervision.
Dual HV wake-up inputs (L1/L2)	Support both digital edge-triggered wake-up and analog voltage monitoring via internal 1:1 or 1:3.6 divider.
Integrated 5.0 V/60 mA LDO	Includes full fault reporting (undervoltage, overvoltage, thermal) and low-dropout operation down to 0.1 V.
HS1 + LS1/LS2 PWM capability	All three drivers accept common PWMIN signal - simplifies motor speed or LED brightness control with single timer.
Real-time SPI diagnostics	Registers report HS/LS faults (open-load, short-circuit), temperature prewarning (90 °C), and LIN bus errors.

Applications

Window Lift Control	Mirror Adjustment
Use Scenario: Bidirectional DC motor control for automotive power window actuation with anti-pinch detection. IC Role / Device Role / Timing Role: MC34911G5AC provides HS1 for motor high-side drive, LS1/LS2 for direction control, LIN interface for ECU command reception, and VSENSE for battery voltage monitoring during stall detection. Use Value: Integrated diagnostics eliminate need for external current sense and voltage monitor ICs; PWMIN enables smooth ramp-up/ramp-down to reduce mechanical stress.	Use Scenario: Position adjustment of side-view mirrors using small DC motors with position feedback. IC Role / Device Role / Timing Role: MC34911G5AC uses LS1/LS2 to drive mirror motor windings, LIN transceiver for command reception from door module, and L1/L2 inputs for switch contact monitoring. Use Value: On-chip analog multiplexer (ADOUT0) reads potentiometer feedback without external ADC; thermal shutdown prevents coil burnout during jamming.
Door Lock Actuation	Sunroof Motor Control
Use Scenario: Solenoid or small motor-based door lock/unlock mechanism with status reporting. IC Role / Device Role / Timing Role: MC34911G5AC drives solenoid via HS1, monitors lock switch via L1/L2 inputs, reports faults (open-load, overtemp) via SPI, and communicates status over LIN. Use Value: Built-in open-load detection confirms solenoid engagement; IRQ pin signals lock/unlock completion to MCU without polling.	Use Scenario: Controlled opening/closing of panoramic sunroof with obstacle detection and soft-stop behavior. IC Role / Device Role / Timing Role: MC34911G5AC controls sunroof motor via HS1 and LS1/LS2, senses battery voltage (VSENSE) during high-current moves, and triggers thermal shutdown if motor stalls. Use Value: VDD LDO powers sunroof control MCU; LIN interface enables seamless integration into vehicle body domain network without gateway translation.

Window Lift Control

Mirror Adjustment

Use Scenario: Bidirectional DC motor control for automotive power window actuation with anti-pinch detection.

IC Role / Device Role / Timing Role: MC34911G5AC provides HS1 for motor high-side drive, LS1/LS2 for direction control, LIN interface for ECU command reception, and VSENSE for battery voltage monitoring during stall detection.

Use Value: Integrated diagnostics eliminate need for external current sense and voltage monitor ICs; PWMIN enables smooth ramp-up/ramp-down to reduce mechanical stress.

Use Scenario: Position adjustment of side-view mirrors using small DC motors with position feedback.

IC Role / Device Role / Timing Role: MC34911G5AC uses LS1/LS2 to drive mirror motor windings, LIN transceiver for command reception from door module, and L1/L2 inputs for switch contact monitoring.

Use Value: On-chip analog multiplexer (ADOUT0) reads potentiometer feedback without external ADC; thermal shutdown prevents coil burnout during jamming.

Door Lock Actuation

Sunroof Motor Control

Use Scenario: Solenoid or small motor-based door lock/unlock mechanism with status reporting.

IC Role / Device Role / Timing Role: MC34911G5AC drives solenoid via HS1, monitors lock switch via L1/L2 inputs, reports faults (open-load, overtemp) via SPI, and communicates status over LIN.

Use Value: Built-in open-load detection confirms solenoid engagement; IRQ pin signals lock/unlock completion to MCU without polling.

Use Scenario: Controlled opening/closing of panoramic sunroof with obstacle detection and soft-stop behavior.

IC Role / Device Role / Timing Role: MC34911G5AC controls sunroof motor via HS1 and LS1/LS2, senses battery voltage (VSENSE) during high-current moves, and triggers thermal shutdown if motor stalls.

Use Value: VDD LDO powers sunroof control MCU; LIN interface enables seamless integration into vehicle body domain network without gateway translation.

Equivalent & Alternatives

The following parts are listed as comparable options for similar LIN system basis chip applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
MC33911G5AC/R2	Wider temperature range (-40 °C to +125 °C); identical pinout, register map, and feature set.	Required for engine compartment or under-hood placement where ambient exceeds 85 °C.	Select MC33911G5AC/R2 when junction temperature may exceed 150 °C or when AEC-Q100 Grade 0 qualification is mandated.
MC34911BAC/R2	Legacy generation (2.0) with lower ESD rating on LIN pin (±2 kV vs. ±6 kV) and no J2602 conformance testing.	Suitable only for legacy designs not requiring latest EMC immunity or LIN conformance certification.	Choose MC34911BAC/R2 only for cost-sensitive, non-certified replacement in existing designs with unchanged layout and test plan.

Compared with MC34911G5AC, MC33911G5AC offers extended thermal capability for harsher environments while maintaining full software and hardware compatibility; MC34911BAC/R2 sacrifices modern EMC robustness for legacy cost targets but lacks production-tested J2602 compliance.

Availability

MC34911G5AC is available at Aetrix Electronics and suitable for automotive body electronics applications requiring stable component supply, AEC-Q100-compliant operation, and long-term industrial availability - including window lift systems, mirror actuators, door lock modules, and sunroof controllers.

Supply support for MC34911G5AC 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 MC34911G5AC belongs to NXP's System Basis Chip product line, engineered specifically for automotive body electronics to consolidate power regulation, communication, and driver functions into a single AEC-Q100-qualified device.

FAQ

What is the maximum ambient temperature rating for the MC34911G5AC?

The MC34911G5AC is rated for operation from -40 °C to +85 °C ambient temperature. This specification is explicitly defined in Table 3 of the MC33911 datasheet (Rev. 10.0, p.8) for the "34911" variant, distinguishing it from the -40 °C to +125 °C MC33911G5AC. Junction temperature must remain below 150 °C under all conditions.

Does the MC34911G5AC support LIN Physical Layer conformance to SAE J2602-2?

Yes, the MC34911G5AC supports SAE J2602-2 conformance. The datasheet states that the "33911G5" generation (which includes MC34911G5AC) was enhanced to comply with J2602 conformance testing, including improved ESD performance (±6.0 kV on LIN pin), reduced EMC emissions, and immunity against ISO 7637 pulse 3b - all verified per the official MC33911G5 product specifications.

What is the purpose of the WDCONF pin on the MC34911G5AC?

The WDCONF pin on the MC34911G5AC configures the window watchdog period using an external resistor (20–200 kΩ). With R_EXT = 20 kΩ, the timeout is ~8.5 ms; with R_EXT = 200 kΩ, it extends to ~205 ms. Leaving WDCONF open disables the watchdog entirely. The timing formula t_PWD[ms] = [0.466 × (R_EXT − 20)] + 10 is documented in the MC33911 datasheet (Rev. 10.0, p.16).

Can the MC34911G5AC drive a 12 V DC motor directly?

Yes, the MC34911G5AC can drive small 12 V DC motors directly using its HS1 high-side switch (60 mA continuous) and LS1/LS2 low-side switches (150 mA each). For typical automotive window or mirror motors drawing <150 mA, LS1/LS2 provide full H-bridge control. Larger motors require external FETs, but MC34911G5AC remains ideal for control, diagnostics, and LIN interface.

How does the MC34911G5AC handle battery voltage monitoring?

The MC34911G5AC monitors battery voltage via the VSENSE pin, which connects directly to the vehicle battery rail (with 10 kΩ series resistor recommended). An internal 5.25× voltage divider scales the input for measurement by the analog multiplexer, and the resulting value appears on ADOUT0 - enabling accurate battery telemetry without external components.

MC34911G5AC Specifications

Product attributes: Attribute value

Manufacturer:: NXP Semiconductors

Series:: -

Package/Case:: 32-LQFP

Packaging:: Tray

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)

MC34911G5AC FAQ

1.How can I place an order for MC34911G5AC through Aetrix?

Please submit a Request for Quotation (RFQ) for MC34911G5AC 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 MC34911G5AC reliable?

The price and inventory of MC34911G5AC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC34911G5AC is usually 5 days.

3.What payment methods are accepted for MC34911G5AC?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC34911G5AC transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MC34911G5AC?

MC34911G5AC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MC34911G5AC 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 MC34911G5AC?

For technical support, including MC34911G5AC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC34911G5AC requirements.

6.How does Aetrix verify that MC34911G5AC is sourced from the original manufacturer or authorized distributors?

All MC34911G5AC 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 MC34911G5AC meets industry standards.

7.What is the process for return or replacement of MC34911G5AC?

All MC34911G5AC units undergo pre-shipment inspection (PSI). If there is an issue with MC34911G5AC, 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 MC34911G5AC part is unused and in its original packaging.

Return procedure for MC34911G5AC:

1.Submit a request within 90 days.

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

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