MP5003

3.3V, 1A-3A Programmable Current

Limit Switch with Auto Enable

MP5003 Rev. 0.921

www.MonolithicPower.com

1

2/29/2012

MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.

© 2012 MPS. All Rights Reserved.

The Future of Analog IC Technology

DESCRIPTION

The MP5003 is a protection device designed to

from undesired shorts and transients coming

from the load.

At start up, inrush current is limited by limiting the

small capacitor at the dv/dt pin. The dv/dt pin has

an internal circuit that allows the customer to float

this pin (no connect) and still receive a 1.1ms

limited. This is accomplished by utilizing a sense

FET topology. The magnitude of the current limit

is controlled by an external resistor connected

An internal charge pump drives the gate of the

power device, allowing a very low on-resistance

DMOS power FET of just 44mΩ.

high. Under Voltage Lockout (UVLO) assures

that the input is above the minimum operating

threshold, before the power device is turned on.

output voltage will be limited.

FEATURES

 Integrated 44mΩ Power FET

 Enable/Fault Pin

 Adjustable Slew Rate for Output Voltage

 Adjustable Current Limit: 1A-3A

 Automatically Startup after Thermal

Protection

 Over Voltage Limit

APPLICATIONS

 Hot Swap

 PC Cards

 Cell Phones

 Laptops

TYPICAL APPLICATION

MP5003

+ILIMIT

-ILIMIT

Enable/Fault

VOUT

VOUT

VOUT

VOUT

VOUT

VIN

dv/dt

GND

5

11

6

7

8

9

10

4

3

2

1

VIN

VOUT

Cdv/dt

(Optional)

EN

“MPS” and “The Future of Analog IC Technology” are Registered Trademarks

of Monolithic Power Systems, Inc.