Overview
The MC33908LAE557 is a power system basis chip developed by Freescale Semiconductor, now part of NXP Semiconductors. This integrated circuit is designed for the automotive market, offering a comprehensive set of features for power management and communication. It includes high-speed CAN and LIN transceivers, multiple switching and linear voltage regulators, and advanced safety features to ensure high integrity and reliability in automotive systems.
Key Specifications
| Parameter | Description |
|---|---|
| Package | HLQFP48: 48-pin, plastic, thermal enhanced low profile quad flat package; 7 mm x 7 mm x 1.4 mm |
| Temperature Range | -40 to 125 °C |
| CAN Interface | High-speed CAN, compliant with ISO11898-2 and -5 standards |
| LIN Interface | LIN protocol specifications 1.3, 2.0, 2.1, 2.2, and SAEJ2602-2 |
| Voltage Regulators | Switching mode power supply (SMPS) for MCU core supply (1.2 V to 3.3 V, up to 1.5 A); Linear voltage regulators for auxiliary functions and sensor supply |
| Wake-up Sources | CAN, LIN, and/or IOs in low-power mode |
| I/Os | Six configurable I/Os |
| Low-Power Mode | 32 μA in low-power mode |
| Safety Features | Multiple fail-safe outputs; safety block for high integrity safety level (up to ASIL D) |
Key Features
- Battery voltage sensing and MUX output pin
- Highly flexible SMPS pre-regulator with non-inverting buck-boost and standard buck topologies
- Switching mode power supply dedicated to MCU core supply from 1.2 V to 3.3 V, delivering up to 1.5 A
- Multiple wake-up sources in low-power mode: CAN, LIN, and/or IOs
- Six configurable I/Os
- Linear voltage regulators dedicated to auxiliary functions or sensor supply (VCCA tracker or independent), 5.0 V or 3.3 V
- Advanced power management scheme for high efficiency over wide input voltages (down to 2.7 V) and wide output current ranges
- Enhanced safety features with multiple fail-safe outputs to achieve high integrity safety levels (up to ASIL D)
Applications
- Electrical power steering
- Engine management
- Battery management
- Active suspension
- Gear box and transmission
- Electrical vehicle (EV), hybrid electrical vehicle (HEV), and inverter
- Advanced driver assistance systems (ADAS)
Q & A
- What is the MC33908LAE557 used for?
The MC33908LAE557 is a power system basis chip used in automotive applications for power management and communication, including high-speed CAN and LIN transceivers.
- What are the key features of the MC33908LAE557?
Key features include multiple voltage regulators, high-speed CAN and LIN interfaces, advanced safety features, and configurable I/Os.
- What is the temperature range of the MC33908LAE557?
The temperature range is -40 to 125 °C.
- What types of voltage regulators are included in the MC33908LAE557?
The chip includes switching mode power supply (SMPS) for MCU core supply and linear voltage regulators for auxiliary functions and sensor supply.
- How does the MC33908LAE557 handle wake-up sources in low-power mode?
The chip supports wake-up sources from CAN, LIN, and/or IOs in low-power mode.
- What safety standards does the MC33908LAE557 comply with?
The chip complies with safety standards up to ASIL D and includes multiple fail-safe outputs.
- What is the package type of the MC33908LAE557?
The package type is HLQFP48, a 48-pin plastic thermal enhanced low profile quad flat package.
- What are some common applications of the MC33908LAE557?
Common applications include electrical power steering, engine management, battery management, active suspension, and advanced driver assistance systems.
- How efficient is the power management scheme of the MC33908LAE557?
The power management scheme is designed for high efficiency over wide input voltages (down to 2.7 V) and wide output current ranges.
- Can the MC33908LAE557 be used in electric and hybrid vehicles?
