MP5000

12V, 5A Programmable Current

Limit Switch

MP5000 Rev. 1.41

www.MonolithicPower.com

1

9/6/2013

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© 2013 MPS. All Rights Reserved.

DESCRIPTION

The MP5000 is a protection device designed to

protect circuitry on the output (source) from

undesired shorts and transients coming from the

source.

At start up, inrush current is limited by limiting the

slew rate at the source. The slew rate is

controlled by a 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 1.1ms ramp time at the source.

The max load at the output (source) is current

limited. This is accomplished by utilizing a sense

FET topology. The magnitude of the current limit

is controlled by an external resistor from the I-

Limit pin to the Source pin.

An internal charge pump drives the gate of the

power device, allowing a very low on-resistance

DMOS power FET of just 44m

Ω.

too low or too high. Under Voltage Lockout

operating threshold, before the power device is

threshold, the source voltage will be limited.

FEATURES

 Integrated 44mΩ Power FET

 Enable/Fault Pin

 Adjustable Slew Rate for Output Voltage

 Adjustable Current Limit: 1-5A

 Thermal Protection

 Over Voltage Limit

APPLICATIONS

 Hot Swap

 PC Cards

 Laptops

TYPICAL APPLICATION

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