Overview
The MC33984CHFKR2, produced by NXP USA Inc., is a dual intelligent high-current self-protected silicon switch. This device is designed to replace electromechanical relays, fuses, and discrete devices in power management applications. It is particularly suited for harsh environments and includes self-recovery features, making it ideal for loads with high inrush current, as well as motors and various types of resistive and inductive loads. The device is controlled and programmed via the serial peripheral interface (SPI) and also features a dedicated parallel input for alternate and pulse width modulation (PWM) control of each output.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Notes |
|---|---|---|---|---|---|
| Output Resistance | - | 4.0 | - | mΩ | - |
| Operating Temperature | -40 | - | 125 | °C | - |
| Supply Voltage | 9.0 | - | 16 | V | - |
| Output Rising Slow Slew Rate A | 0.15 | 0.5 | 1.3 | V/μs | DICR D3 = 0 |
| Output Rising Fast Slew Rate A | 0.3 | 0.8 | 3.2 | V/μs | DICR D3 = 1 |
| Output Turn-ON Delay Time | 1.0 | - | 100 | μs | DICR = 0, DICR = 1 |
| Output Turn-OFF Delay Time (Slow Slew Rate) | 10 | - | 250 | μs | DICR = 0 |
| Overcurrent Detection Blanking Time | 0.08 | - | 1.6 | ms | OCLT[1:0] |
Key Features
- Dual self-protected 4.0 mΩ silicon switch for high-current applications.
- Designed for harsh environments with self-recovery features.
- Suitable for loads with high inrush current, motors, and resistive and inductive loads.
- Control and programming via SPI interface.
- Dedicated parallel input for alternate and PWM control of each output.
- SPI-programmable fault trip thresholds for optimal performance.
- Output current monitoring via the CSNS pin.
- Power-enhanced 12 mm x 12 mm non-leaded PQFN package with exposed tabs.
Applications
The MC33984CHFKR2 is versatile and can be used in a variety of power management applications, including:
- Replacing electromechanical relays and fuses.
- Managing power in harsh environments.
- Controlling high inrush current loads.
- Driving motors and other inductive loads.
- Implementing in automotive, industrial, and consumer electronics where robust power switching is required.
Q & A
- What is the MC33984CHFKR2 used for?
The MC33984CHFKR2 is a dual intelligent high-current self-protected silicon switch used to replace electromechanical relays, fuses, and discrete devices in power management applications. - What is the operating temperature range of the MC33984CHFKR2?
The operating temperature range is -40°C to 125°C. - What is the typical output resistance of the MC33984CHFKR2?
The typical output resistance is 4.0 mΩ. - How is the MC33984CHFKR2 controlled and programmed?
The device is controlled and programmed via the serial peripheral interface (SPI) and also features a dedicated parallel input for alternate and PWM control of each output. - What types of loads can the MC33984CHFKR2 handle?
The device can handle loads with high inrush current, motors, and various types of resistive and inductive loads. - What is the package type of the MC33984CHFKR2?
The device is packaged in a power-enhanced 12 mm x 12 mm non-leaded PQFN package with exposed tabs. - How does the MC33984CHFKR2 monitor output current?
The device monitors output current via the CSNS pin, which outputs a current proportional to the designated HS0-1 output. - Can the fault trip thresholds of the MC33984CHFKR2 be adjusted?
Yes, the fault trip thresholds can be adjusted via SPI programming for optimal performance in the application. - What are some common applications of the MC33984CHFKR2?
Common applications include replacing electromechanical relays and fuses, managing power in harsh environments, controlling high inrush current loads, and driving motors and other inductive loads. - Is the MC33984CHFKR2 suitable for automotive applications?
Yes, the device is suitable for automotive, industrial, and consumer electronics where robust power switching is required.
