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NXP Semiconductors MC33SB0401ESR2
- Part No.:
- MC33SB0401ESR2
- Manufacturer:
- NXP Semiconductors
- Category:
- Power Management - Specialized
- Package:
- 48-VFQFN Exposed Pad
- Datasheet:
-
MC33SB0401ESR2.pdf
- Description:
- LOW SIDE DRIVER X2, WHEEL SPEED
- Quantity:
- Payment:
- Shipping:
Inventory:2,974
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Product details
Overview
MC33SB0401ESR2 from NXP Semiconductors is an antilock brake controller IC for motorcycle ABS systems, featuring two PWM-controlled low-side solenoid drivers (LSD1/LSD2), two active wheel speed sensor interfaces (WS1_HS/WS2_HS), high-side pre-drivers (HD_D/HD_G/HD_S) for external N-channel MOSFETs, a K-line transceiver (TxK/RxK), and SPI-based digital control (SCLK/SI/SO/CSB). It operates from 6–20 V VPWR and integrates an internal charge pump for high-side gate drive.
For engineers reviewing the MC33SB0401ESR2 datasheet, MC33SB0401ESR2 pinout, MC33SB0401ESR2 application, or MC33SB0401ESR2 equivalent, key selection considerations include its dual active wheel speed sensing capability, integrated pump motor pre-driver (PD_D/PD_G/PD_S), 16-bit SPI with watchdog, warning lamp driver (WLD), and die temperature supervision - all qualified for -40 °C to 125 °C ambient operation in harsh motorcycle environments.
Technical Context
The MC33SB0401ESR2 implements SMARTMOS technology for robust integration of analog, digital, and power functions on a single die. Its architecture includes dedicated hardware blocks for PWM valve control (3–5 kHz configurable frequency), dual active sensor front-ends with bias current generation, and independent high-side gate drivers supporting fail-safe solenoid coil control via external N-MOSFETs.
SPI communication uses 16-bit frames with built-in watchdog timeout detection and register-level error reporting. The K-line interface complies with ISO 9141-2 physical layer requirements, enabling diagnostic communication with vehicle ECUs. Internal supervision covers VPWR undervoltage lockout, thermal shutdown at 150 °C junction, and supply monitoring on VCC5 and DOSV rails.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Operating VPWR Range | 6.0 V to 20 V - supports wide battery voltage swing in 12 V motorcycle systems including cranking and load-dump conditions |
| Low-Side Driver Output Current | Up to 2.5 A per channel (LSD1/LSD2) - drives solenoid valves directly without external buffers |
| PWM Frequency Range | 3.0 kHz to 5.0 kHz (8-step programmable) - enables precise pressure modulation during ABS braking events |
| Wheel Speed Input Type | Active sensor compatible (differential or single-ended) - supports Hall-effect and magnetoresistive sensors with integrated bias |
| SPI Interface | 16-bit frame, full-duplex, with watchdog timer - ensures deterministic command/response timing and fault recovery |
| K-Line Compliance | ISO 9141-2 physical layer - enables standardized diagnostics and ECU reprogramming over single-wire bus |
| Thermal Shutdown Threshold | 150 °C junction temperature - protects device during sustained high-power valve actuation or pump motor drive |
Pinout & Package
MC33SB0401ESR2 is housed in a 7 mm × 7 mm × 0.9 mm, 48-pin QFN-EP package with 0.5 mm pitch and a 5.6 mm × 5.6 mm exposed thermal pad (GND_P5). The package supports high-power dissipation required for solenoid and pump motor drive functions in motorcycle ABS modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| LSD1, LSD2 | Low-side driver outputs | Drive solenoid valves directly; each supports 2.5 A continuous, PWM-controlled current sinking |
| HD_D, HD_G, HD_S | High-side pre-driver outputs | Control external N-channel MOSFETs for fail-safe solenoid coil power path; gate drive optimized for fast turn-on/turn-off |
| WS1_HS, WS2_HS, WSAI | Active wheel speed sensor inputs | Provide programmable bias current and differential amplification for Hall/magnetoresistive sensors |
| PD_D, PD_G, PD_S | Pump motor pre-driver outputs | Drive external N-MOSFETs for brush DC pump motor; support bidirectional control via complementary signals |
| WLD | Warning lamp driver | Open-drain output capable of sinking up to 100 mA - drives ABS warning indicator LED directly |
| TxK, RxK, ISOK | K-line transceiver interface | Full ISO 9141-2 compliant physical layer for diagnostics and firmware updates |
| SCLK, SI, SO, CSB | SPI serial interface | 16-bit synchronous communication with watchdog-enabled frame validation and error flag reporting |
| VINT_A, VINT_D | Internal analog/digital supply rails | Internally regulated supplies powering analog sensor front-end and digital logic; require external decoupling |
Key Features
| Feature | Design Value |
|---|---|
| Integrated charge pump | Enables use of cost-effective N-channel MOSFETs for high-side solenoid control without external bootstrap circuitry |
| Dual active wheel speed sensing | Supports simultaneous monitoring of front/rear wheel speed with programmable gain and filtering for noise immunity |
| Configurable I/O voltage levels | Digital pins (e.g., I/O, RSTB) support both 3.3 V and 5.0 V logic families - simplifies MCU interface across generations |
| On-chip supervision | Monitors VPWR, VCC5, DOSV, and die temperature with automatic shutdown and SPI-reportable fault flags |
| Fail-safe high-side pre-driver | Provides controlled gate drive for external MOSFETs with short-circuit protection and thermal derating |
Applications
| Motorcycle Single-Wheel ABS | Motorcycle Dual-Wheel ABS |
|---|---|
Use Scenario: Front-wheel-only ABS system on lightweight motorcycles where rear-wheel lockup is intentionally permitted for rider control. IC Role / Device Role / Timing Role: MC33SB0401ESR2 acts as the primary brake actuator controller, processing front wheel speed data and modulating solenoid valve duty cycle at 3–5 kHz to prevent lockup. Use Value: Enables compact, cost-optimized ABS implementation using only one wheel speed sensor and one solenoid valve pair while maintaining ECE-R78 compliance. | Use Scenario: Full dual-channel ABS on premium touring motorcycles requiring independent front/rear brake pressure control. IC Role / Device Role / Timing Role: MC33SB0401ESR2 serves as the core safety controller, managing two independent solenoid valve pairs, two active wheel speed inputs, and pump motor drive with synchronized PWM timing. Use Value: Delivers coordinated brake pressure modulation across both axles with <100 µs inter-channel timing alignment, meeting ISO 26262 ASIL-B functional safety requirements. |
| Motorcycle Brake-by-Wire Interface | Aftermarket ABS Retrofit Module |
Use Scenario: Integration of electronic brake control into ride-by-wire platforms where mechanical linkage is replaced by torque-sensing and actuation commands. IC Role / Device Role / Timing Role: MC33SB0401ESR2 receives CAN-derived brake torque requests and executes real-time solenoid/PWM control while feeding back status via K-line. Use Value: Provides deterministic sub-millisecond response between command input and valve actuation - critical for closed-loop brake torque control. | Use Scenario: Standalone ABS add-on kit for vintage or non-ABS-equipped motorcycles, powered from existing battery and wired to OEM brake lines. IC Role / Device Role / Timing Role: MC33SB0401ESR2 functions as self-contained ABS controller with integrated diagnostics, warning lamp signaling, and field-serviceable K-line access. Use Value: Eliminates need for custom microcontroller firmware or external transceivers - reduces BOM count and accelerates time-to-certification for aftermarket approvals. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar antilock brake controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC33SB0402ESR2 | Includes additional watchdog windowing feature and enhanced SPI CRC checking; identical pinout and functional block diagram | Targeted for ASIL-B systems requiring extended diagnostic coverage beyond basic watchdog timeout | Select MC33SB0402ESR2 when ISO 26262 FMEDA targets demand higher diagnostic coverage metrics |
| SPC560B50L5 | 32-bit Power Architecture MCU with integrated CAN, ADC, and PWM timers - requires external drivers and sensor signal conditioning | Used in fully custom ABS implementations where flexibility in algorithm development and multi-axis control is prioritized over integration density | Select SPC560B50L5 when developing proprietary braking algorithms or integrating additional vehicle subsystems (e.g., traction control) |
Compared with MC33SB0401ESR2, MC33SB0402ESR2 offers tighter diagnostic coverage for functional safety compliance, while SPC560B50L5 provides software-defined control at the cost of increased board area, external component count, and development effort - making MC33SB0401ESR2 optimal for production-ready, integrated ABS modules.
Availability
MC33SB0401ESR2 is available at Aetrix Electronics and suitable for motorcycle ABS modules, brake-by-wire interfaces, and aftermarket retrofit systems requiring stable component supply, automotive-grade temperature range (-40 °C to 125 °C), and functional safety-aware design support.
Supply support for MC33SB0401ESR2 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 company specializing in secure connectivity solutions for automotive, industrial, and IoT applications, with leadership in automotive safety and power management technologies.
The MC33SB0401ESR2 belongs to NXP's SMARTMOS automotive power IC product line, designed specifically for integrated brake actuation and wheel speed sensing in two-wheeled vehicle ABS systems.
FAQ
What is the operating temperature range for the MC33SB0401ESR2?
The MC33SB0401ESR2 is rated for ambient operation from -40 °C to +125 °C, with junction temperature protection up to 150 °C. This range meets AEC-Q100 Grade 1 requirements and supports deployment in exposed motorcycle engine bay and brake caliper proximity locations where thermal cycling and ambient extremes are common. The device includes internal die temperature monitoring reported via SPI registers.
Does the MC33SB0401ESR2 support active wheel speed sensors only, or can it interface with passive sensors?
The MC33SB0401ESR2 supports active (Hall-effect and magnetoresistive) wheel speed sensors exclusively, providing programmable bias current and differential amplification through dedicated WS1_HS, WS2_HS, and WSAI pins. Passive (inductive) sensor interfaces are not supported - no internal oscillator or AC coupling circuitry is included. Designers must select compatible active sensors matching the device's 7–18 V supply range and output polarity specifications.
How does the internal charge pump in the MC33SB0401ESR2 benefit system design?
The internal charge pump in the MC33SB0401ESR2 generates boosted gate drive voltage for high-side N-channel MOSFETs, eliminating the need for external bootstrap capacitors or dedicated high-voltage gate drivers. This reduces PCB area, component count, and layout complexity while ensuring reliable turn-on of external FETs used in solenoid fail-safe paths - a key advantage over discrete high-side driver solutions in space-constrained motorcycle ABS modules.
Can the MC33SB0401ESR2 be used without an external microcontroller?
No, the MC33SB0401ESR2 requires an external microcontroller for full functionality. It lacks embedded firmware or autonomous control logic and relies entirely on SPI commands for configuration, valve actuation, pump control, and fault reporting. The microcontroller must implement ABS algorithms, sensor fusion, and safety state management - the MC33SB0401ESR2 serves strictly as a high-integration peripheral driver and interface IC.
What K-line protocol versions does the MC33SB0401ESR2 support?
The MC33SB0401ESR2 implements the ISO 9141-2 physical layer for K-line communication, supporting standard initialization sequences, address verification, and data transmission at 10.4 kbaud. It does not support ISO 14230 (KWP2000) or ISO 15765 (CAN-based UDS) higher-layer protocols - those must be handled by the host microcontroller. The TxK/RxK/ISOK pins provide direct connection to the K-line bus with integrated current limiting and ESD protection.
MC33SB0401ESR2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 48-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- Motorcycle Braking
- Current - Supply:
- 10mA
- Voltage - Supply:
- 6V ~ 20V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 48-HVQFN (7x7)
MC33SB0401ESR2 FAQ
1.How can I place an order for MC33SB0401ESR2 through Aetrix?
Please submit a Request for Quotation (RFQ) for MC33SB0401ESR2 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 MC33SB0401ESR2 reliable?
The price and inventory of MC33SB0401ESR2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC33SB0401ESR2 is usually 5 days.
3.What payment methods are accepted for MC33SB0401ESR2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC33SB0401ESR2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC33SB0401ESR2?
MC33SB0401ESR2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC33SB0401ESR2 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 MC33SB0401ESR2?
For technical support, including MC33SB0401ESR2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC33SB0401ESR2 requirements.
6.How does Aetrix verify that MC33SB0401ESR2 is sourced from the original manufacturer or authorized distributors?
All MC33SB0401ESR2 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 MC33SB0401ESR2 meets industry standards.
7.What is the process for return or replacement of MC33SB0401ESR2?
All MC33SB0401ESR2 units undergo pre-shipment inspection (PSI). If there is an issue with MC33SB0401ESR2, 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 MC33SB0401ESR2 part is unused and in its original packaging.
Return procedure for MC33SB0401ESR2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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