MP5017A

3V to 5.5V, 1A to 5A Current Limit Switch with Over-Voltage Clamp and Reverse Blocking in a QFN-12 (2mmx3mm) Package

Description

The MP5017A is a protection device designed to protect circuitry on the output from transients at the input. It also protects the input from unwanted shorts and transients at the output.

During start-up, the inrush current is controlled by limiting the slew rate at the output. The slew rate is controlled by a small capacitor connected at the DV/DT pin.

The maximum output load is current-limited. The magnitude of the current limit (I_LIMIT) is controlled by an external resistor connected between the ILIMIT and GND pins. By controlling the gate voltages via a pair of N-channel MOSFETs, any current flowing from the output to the input is blocked.

Under-voltage lockout (UVLO) protection ensures that the input is above the minimum operating threshold before the device starts up. If the input voltage (V_IN) exceeds 5.8V, then the output voltage (V_OUT) is limited to 5.8V. The SAS/OV pin programs the V_IN over-voltage protection (OVP) threshold. The FAULT pin is an open-drain output that goes low if an over-current (OC), over-temperature (OT), or output over-voltage (OV) fault is detected.

The MP5017A is available in a QFN-12 (2mmx3mm) package.

Features & Benefits

3V to 5.5V Operating Input Voltage (V_IN) Range
16V Absolute Maximum V_IN
Output Discharge
SAS/OV Disabled to Support DEVSLP or POWER_DOWN
8V Fast Output Over-Voltage Protection (OVP) Response
Reverse Current Blocking
Integrated 45mΩ R_DS(ON) Power MOSFET
Adjustable Current Limit (I_LIMIT) via ILIMIT
210μA Low Quiescent Current (I_Q)
Configurable Soft-Start Time (t_SS) via DV/DT
Fast Response for Hard-Short Protection
Fault Indication for Over-Current (OC), Over-Temperature (OT), and Output Over-Voltage (OV) Conditions
Over-Temperature Protection (OTP) Auto-Retry with 76ms Recovery Delay
Available in a QFN-12 (2mmx3mm) Package