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NXP Semiconductors MC33910BAC
- Part No.:
- MC33910BAC
- Manufacturer:
- NXP Semiconductors
- Category:
- Power Management - Specialized
- Package:
- 32-LQFP
- Datasheet:
-
MC33910BAC.pdf
- Description:
- IC SYSTEM BASIS CHIP 32LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,673
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Product details
Overview
MC33910BAC from NXP Semiconductors is a LIN System Basis Chip (SBC) with integrated 5.0 V/60 mA LDO regulator, two 50 mA/60 mA high-side drivers, LIN 2.0/2.1 transceiver, configurable window watchdog, and high-voltage analog/logic input (L1). It operates across -40 °C to 125 °C in 32-pin LQFP and supports automotive body electronics such as window lift and door lock control.
For engineers reviewing the MC33910BAC datasheet, MC33910BAC pinout, MC33910BAC application, or MC33910BAC equivalent, this page delivers verified functional identity, validated pin roles, confirmed thermal and electrical specs per Rev. 9.0 (July 2016), LIN conformance to SAE J2602-2, and real-world diagnostic and wake-up behavior in Normal/Sleep/Stop modes.
Technical Context
The MC33910BAC integrates SPI-controlled power management, LIN physical layer with selectable waveshaping, dual high-side switches with PWM capability, and analog multiplexing of L1 for contact monitoring or external wake-up. Its internal architecture includes independent voltage regulation paths for VDD (5.0 V main supply) and HVDD (5.0 V Hall sensor output), plus dedicated fault reporting via SPI-accessible status registers.
It implements three distinct operating modes: Normal (full functionality), Sleep (VDD off, wake-up via LIN/L1/cyclic sense), and Stop (VDD on at reduced current, wake-up via CS/LIN/L1/cyclic sense/external reset). Wake-up sources are hardware-debounced and configurable, and the window watchdog uses an external resistor (20–200 kΩ) for programmable timeout (8.5–205 ms).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| LIN Compliance | SAE J2602-2, LIN 2.0 & 2.1 compliant transceiver with configurable waveshaping and ±100 kbps capability. |
| VDD Regulator | 5.0 V ±2.5% output, 60 mA min current limit in Normal mode, dropout ≤250 mV at 50 mA load. |
| High-Side Drivers | HS1 & HS2: RDS(on) ≤7.0 Ω @ 25°C, 50 mA load; current-limited to 60–250 mA with open-load and short-circuit detection. |
| Operating Temp | -40 °C to +125 °C ambient, junction temperature up to 150 °C with thermal shutdown at 150–190 °C. |
| SPI Interface | Full-duplex, up to 4.0 MHz clock rate; supports CS-driven mode entry/exit and register-based diagnostics. |
| Supply Range | VS1/VS2: 5.5–27 V DC nominal, withstands 40 V load dump transients per ISO 7637-2 Pulse 5a. |
| Wake-up Inputs | L1 digital input with 2.0–4.0 V threshold hysteresis; also supports analog sensing via internal 0.95× or 3.6× divider to ADOUT0. |
Pinout & Package
MC33910BAC is housed in a 32-pin LQFP (Leadless Quad Flat Package) with exposed thermal pad, Pb-free (RoHS-compliant) finish, and standard JEDEC MO-220 footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RXD / TXD | LIN Bus Interface | RX reports bus state to MCU; TX controls driver output - enables half-duplex LIN communication. |
| MISO / MOSI / SCLK / CS | SPI Control Interface | Full-duplex serial interface for configuration, diagnostics, and mode control; CS active-low enables device selection. |
| HS1 / HS2 | High-Side Switch Outputs | Drive resistive/inductive loads (e.g., motors, solenoids); support PWM dimming and fault reporting via HSSR register. |
| L1 | Wake-up & Analog Input | Digital wake-up source with 33 kΩ series protection; analog-capable via internal multiplexer for battery/contact sensing. |
| VSENSE | Battery Voltage Monitor | Direct connection to battery line with internal 5.25× divider; self-protected against reverse polarity and transients. |
| HVDD | Hall Sensor Supply | Switched 5.0 V output with ±2% matching to VDD; requires 1–10 µF external capacitor for stability. |
| VDD | Main Regulated Output | Primary 5.0 V supply for MCU and logic; requires 2–100 µF external capacitor; includes LVR and overtemperature protection. |
| WDCONF | Watchdog Timing Pin | External resistor (20–200 kΩ) sets window watchdog period (8.5–205 ms); open pin yields ~110 ms default. |
Key Features
| Feature | Design Value |
|---|---|
| LIN Transceiver with J2602 Support | Meets SAE J2602-2 conformance including undervoltage threshold (5.0–6.0 V), hysteresis (400 mV), and EMC immunity. |
| Dual High-Side Drivers with Diagnostics | Each HSx provides current limiting, open-load detection (5–7.5 mA), short-circuit shutdown, and thermal protection. |
| Configurable Window Watchdog | Hardware-based watchdog with user-selectable timeout (8.5–205 ms) and interrupt generation on timeout or misconfiguration. |
| Multi-Mode Power Management | Three low-power states: Sleep (≤35 µA @ 13.5 V), Stop (≤90 µA), and Normal (≤10 mA); all support multiple wake-up sources. |
| Analog Multiplexing Capability | L1, VSENSE, and internal die temperature feed ADOUT0 via SPI-configurable analog mux - enables single ADC channel reuse. |
Applications
| Window Lift Control | Mirror Adjustment |
|---|---|
|
Use Scenario: Bidirectional motor control for automotive power window regulators with anti-pinch detection and position feedback. IC Role / Device Role / Timing Role: MC33910BAC supplies regulated 5 V to MCU and Hall sensors, drives window motor via HS1/HS2, monitors battery voltage (VSENSE), and wakes system via L1 on switch press. Use Value: Integrated LIN transceiver enables direct communication with body control module; diagnostics reduce need for external fault monitoring circuitry. |
Use Scenario: Motorized mirror folding/unfolding and tilt adjustment using small DC motors in compact side mirror housings. IC Role / Device Role / Timing Role: MC33910BAC powers mirror MCU and position sensors via HVDD/VDD, controls motor direction through HS1/HS2, and detects switch actuation via L1 analog sensing. Use Value: Single-chip solution eliminates discrete LDO, transceiver, and high-side drivers - reducing BOM count and PCB area by >30%. |
| Door Lock Actuation | Sunroof Motor Control |
|
Use Scenario: Electromechanical door latch activation with feedback confirmation and tamper detection in OEM door modules. IC Role / Device Role / Timing Role: MC33910BAC receives LIN commands to energize lock/unlock solenoids via HS1/HS2, monitors supply integrity (VSUP flags), and signals faults via IRQ pin. Use Value: Built-in overtemperature and overcurrent protection prevents coil burnout during jam conditions; SPI diagnostics enable predictive maintenance alerts. |
Use Scenario: Controlled opening/closing of panoramic sunroofs with obstacle detection and soft-stop functionality. IC Role / Device Role / Timing Role: MC33910BAC regulates power to sunroof MCU and Hall sensors, drives bidirectional motor via HS1/HS2, senses battery level (VSENSE), and enters Sleep mode when idle. Use Value: Cyclic sense feature enables ultra-low-power wake-up without external timer; LIN compliance ensures seamless integration into vehicle-wide LIN networks. |
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 |
|---|---|---|---|
| MC33912BAC | Same pinout and core functionality; adds CAN 2.0B controller and enhanced ESD robustness (±8 kV HBM on LIN). | Required where CAN+LIN coexistence is needed (e.g., gateway modules); not drop-in due to added CAN PHY and routing complexity. | Select MC33912BAC only if CAN interface is mandatory; otherwise MC33910BAC offers lower cost and simpler layout. |
| TLIN1029DR | Standalone LIN transceiver (no regulator, no HS drivers); supports LIN 2.2A and higher data rates (20 kbps); smaller 8-pin SOIC package. | Used in systems where power management and switching are handled externally (e.g., microcontroller with external FETs). | Choose TLIN1029DR for minimal footprint and higher-speed LIN-only nodes; MC33910BAC remains optimal for integrated SBC requirements. |
Compared with MC33910BAC, MC33912BAC adds CAN capability at higher cost and layout overhead, while TLIN1029DR reduces integration but requires external components for full SBC functionality - making MC33910BAC the balanced choice for cost-sensitive, space-constrained LIN body nodes.
Availability
MC33910BAC is available at Aetrix Electronics and suitable for window lift, mirror switch, and door lock applications requiring stable component supply, automotive-grade reliability, and long-term production continuity.
Supply support for MC33910BAC 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 electronics and functional safety.
The MC33910BAC belongs to NXP's System Basis Chip product line, designed specifically for automotive body electronics to consolidate power regulation, communication, and load driving into a single AEC-Q100 qualified device.
FAQ
What is the maximum LIN data rate supported by the MC33910BAC?
The MC33910BAC supports LIN data rates up to 100 kbps with waveshaping enabled, and higher rates with waveshaping disabled. Its physical layer complies with LIN 2.0/2.1 and SAE J2602-2 specifications, ensuring interoperability in automotive networks. The MC33910BAC achieves this using configurable slew-rate control and robust noise immunity design.
Does the MC33910BAC include built-in protection features for its high-side drivers?
Yes, the MC33910BAC provides comprehensive protection for HS1 and HS2, including overcurrent limiting (60–250 mA), open-load detection (5–7.5 mA), short-circuit shutdown, and thermal shutdown at 140–180 °C. All fault conditions generate flags readable via SPI in the High-Side Status Register (HSSR), enabling real-time diagnostics without external circuitry.
How does the MC33910BAC manage low-power operation in automotive sleep modes?
The MC33910BAC supports three low-power states: Sleep (VDD off, ≤35 µA), Stop (VDD on, ≤90 µA), and Normal. Wake-up is possible via LIN bus activity, L1 input, cyclic sense, forced wake-up, or external reset. In Stop mode, it maintains VDD for MCU retention while disabling non-essential blocks - a key feature for meeting OEM quiescent current targets.
Can the MC33910BAC monitor battery voltage directly?
Yes, the MC33910BAC includes a dedicated VSENSE pin that accepts direct connection to the vehicle battery rail. Internally, it applies a 5.25× voltage divider, making the resulting value accessible via the analog multiplexer output ADOUT0. This allows precise battery monitoring using a single ADC channel, with offset compensation and characterization-traceable accuracy.
What is the purpose of the WDCONF pin on the MC33910BAC?
The WDCONF pin configures the window watchdog timeout period using an external resistor (20–200 kΩ). The MC33910BAC calculates tPWD [ms] = [0.466 × (REXT − 20)] + 10, yielding 8.5–205 ms range. An open WDCONF pin defaults to ~110 ms. This hardware-based watchdog detects MCU lockups and triggers safe-state recovery without software dependency - critical for ASIL-B relevant functions.
MC33910BAC 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 ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-LQFP (7x7)
MC33910BAC FAQ
1.How can I place an order for MC33910BAC through Aetrix?
Please submit a Request for Quotation (RFQ) for MC33910BAC 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 MC33910BAC reliable?
The price and inventory of MC33910BAC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC33910BAC is usually 5 days.
3.What payment methods are accepted for MC33910BAC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC33910BAC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC33910BAC?
MC33910BAC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC33910BAC 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 MC33910BAC?
For technical support, including MC33910BAC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC33910BAC requirements.
6.How does Aetrix verify that MC33910BAC is sourced from the original manufacturer or authorized distributors?
All MC33910BAC 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 MC33910BAC meets industry standards.
7.What is the process for return or replacement of MC33910BAC?
All MC33910BAC units undergo pre-shipment inspection (PSI). If there is an issue with MC33910BAC, 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 MC33910BAC part is unused and in its original packaging.
Return procedure for MC33910BAC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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