MP5003 – 3.3V, 1A-3A PROGRAMMABLE CURRENT LIMIT SWITCH WITH AUTO ENABLE

MP5003 Rev. 0.921

www.MonolithicPower.com

4

2/29/2012

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© 2012 MPS. All Rights Reserved.

PIN FUNCTIONS

Pin #

Name

Description

1-5

VOUT

6

+ILIMIT

A resistor between these pins sets the overload and short circuit current limit levels.

7

-ILIMIT

A resistor between these pins sets the overload and short circuit current limit levels.

8

Enable/Fault

The Enable/Fault pin is a bi-directional interface. It can be used to enable the output

of the device by floating the pin, or disable the chip by pulling it to ground (using an

open drain or open collector device). If a thermal fault occurs, the voltage on this pin

will drive to ground, automatically.

9

dv/dt

The internal dv/dt circuit controls the slew rate of the output voltage at turn on. It has

an internal capacitor that allows it to ramp up over the period of 1.1ms. An external

capacitor can be added to this pin to increase the ramp time. If an additional time

delay is not required, this pin should be left open.

10

GND

Negative Input Voltage to the Device. This is used as the internal reference for the IC.

11

VIN

Positive input voltage to the device (Exposed Pad).