Overview
The NXP® MC33879APEKR2518 is a highly versatile and advanced electronic component designed for various automotive and industrial applications. This device is an 8-output hardware configurable high-side/low-side switch, featuring 16-bit serial input control via the Serial Peripheral Interface (SPI). It incorporates SMARTMOS technology, combining CMOS logic, bipolar/MOS analog circuitry, and DMOS power MOSFETs. This configuration allows the MC33879 to control a range of loads including inductive, incandescent, and LED loads, making it a robust solution for complex switching requirements.
Key Specifications
| Parameter | Description | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| VPWR (Operating Voltage) | Power Supply Voltage | 5.5 | - | 27.5 | V |
| IPWR(ON) (Supply Current) | Supply Current in On State | - | - | 24 | mA |
| IPWR(SS) (Sleep State Supply Current) | Supply Current in Sleep State | - | - | 5.0 | µA |
| VDD (Logic Supply Voltage) | Logic Supply Voltage | 3.1 | - | 5.5 | V |
| IDD (Logic Supply Current) | Logic Supply Current | - | - | 700 | µA |
| VPWR(OV) (Overvoltage Shutdown Threshold Voltage) | Overvoltage Shutdown Threshold Voltage | 27 | - | 32 | V |
| VPWR(UV) (Undervoltage Shutdown Threshold Voltage) | Undervoltage Shutdown Threshold Voltage | 3.0 | - | 5.0 | V |
Key Features
- Hardware Configurable: The MC33879 allows for hardware configuration of its 8 outputs, providing flexibility in various applications.
- 16-bit SPI Control: The device is controlled via a 16-bit Serial Peripheral Interface (SPI), enabling comprehensive control and fault reporting.
- SMARTMOS Technology: Combines CMOS logic, bipolar/MOS analog circuitry, and DMOS power MOSFETs for robust performance.
- Load Control: Capable of controlling inductive, incandescent, and LED loads directly through a microcontroller interface.
- Monitoring and Protection Features: Includes low standby currents, cascade fault reporting, internal +45 V clamp voltage for low-side configuration, –20 V high-side configuration, output-specific diagnostics, and independent overtemperature protection.
- PWM Capability: Two outputs can be controlled directly via a microcontroller for pulse-width modulation (PWM) applications.
- Power-ON Reset: The device performs a Power-ON Reset on the rising edge of the enable signal.
Applications
- Automotive Systems: Ideal for use in automotive lighting, wiper, and other accessory control systems due to its robust and flexible design.
- Industrial Control Systems: Suitable for industrial applications requiring reliable and configurable switching solutions.
- LED Lighting Systems: Can be used to control LED lights in various applications, including automotive and industrial lighting systems.
- General Purpose Switching: Applicable in any scenario where high-side/low-side switching with advanced monitoring and protection is required.
Q & A
- What is the operating voltage range of the MC33879APEKR2518?
The operating voltage range is 5.5 V to 27.5 V.
- How is the MC33879APEKR2518 controlled?
The device is controlled via a 16-bit Serial Peripheral Interface (SPI).
- What types of loads can the MC33879APEKR2518 control?
The device can control inductive, incandescent, and LED loads.
- Does the MC33879APEKR2518 support PWM applications?
Yes, two of the outputs can be controlled directly via a microcontroller for PWM applications.
- What are the key protection features of the MC33879APEKR2518?
The device includes low standby currents, cascade fault reporting, internal +45 V clamp voltage, –20 V high-side configuration, output-specific diagnostics, and independent overtemperature protection.
- How does the MC33879APEKR2518 report faults?
Faults are reported through the DO data pin as logic , while normal operating outputs report as logic .
- What happens when the EN pin is low?
When the EN pin is low, all outputs become inactive, open load detection current is disabled, and the device enters Sleep mode.
- Does the MC33879APEKR2518 have internal reverse battery protection?
Yes, the VPWR pin has internal reverse battery protection.
- What is the recommended treatment for the exposed pad of the MC33879APEKR2518?
The exposed pad should be terminated to pin 1 (GND) and system ground for optimal performance.
- What is the sleep state supply current of the MC33879APEKR2518?
The sleep state supply current is up to 5.0 µA.
