MP5017A

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

Description

The MP5017A is a protection device designed to protect output circuitry from transients at the input. It also protects the input from 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 via a small capacitor at the DV/DT pin.

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

Under-voltage lockout (UVLO) protection ensures that the input exceeds 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 configures the input over-voltage protection (OVP) threshold.

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
5.8V 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