The MP5042 is a protection device designed to protect circuitry on the output from transients on the input. The device also protects the input from undesired shorts and transients coming from the output.
During start-up, the inrush current is limited by limiting the slew rate at the output. The slew rate is controlled by setting the DV/DT pin.
The maximum load at the output is current-limited. The current limit (ILIMIT) magnitude is controlled by an external resistor connected between ILIMIT and GND. The ILIMIT threshold can be set between 25mA and 2A. When the ILIMIT pin is floating, ILIMIT is fixed at 260mA.
Features:
- Wide 4.2V to 28V Operating Input Voltage (VIN) Range
- Low 175μA Quiescent Current (IQ)
- Integrated 115mΩ MOSFET
- Adjustable 25mA to 2A Current Limit (ILIMIT) or Fixed 260mA ILIMIT when the ILIMIT Pin Is Floating
- Configurable Soft-Start Time (tSS) via the DV/DT Pin
- ±10% ILIMIT Accuracy at 260mA
