MP5010B

3V-18V, 1A-5A Programmable-Current-

Limit Switch with Over-Voltage Clamp

MP5010B Rev. 1.0

www.MonolithicPower.com

1

4/3/2013

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© 2012 MPS. All Rights Reserved.

The Future of Analog IC Technology

DESCRIPTION

The MP5010B is a protection device designed to

protect circuitry on the output (source) from

input from undesired shorts and transients

coming from the source.

A small capacitor on the dv/dt pin controls the

slew rate that limit the inrush current at the

source. For instance, a 1nF capacitor results in a

source ramp-up time of 3ms.

The maximum load at the source is current

limited using a sense FET topology. An external

resistor between the I-Limit pin and the Source

pins controls the magnitude of the current limit.

An internal charge pump drives the gate of the

power device, allowing the DMOS power FET to

have a very low ON-resistance of just 40mΩ.

The MP5010B also protects the source from the

input being too low or too high. Under-voltage

lockout ensures that the input remains above the

minimum operating threshold before the power

device turns on. If the input rises above the high

output threshold, the MP5010B limits the source

voltage.

FEATURES

• Wide 3V-to-18V Operating Input Range

• 5.7V Output Over-Voltage Clamp

• Integrated 40mΩ Power FET

• Enable/Fault Pin

• Adjustable Output Voltage Slew Rate

• Adjustable Current Limit

• Thermal Protection

APPLICATIONS

• Hot-Swappable Devices

• Wireless Modem Data Cards

• PC Cards

• Laptops

TYPICAL APPLICATION

MP5010B

Enable/Fault

Source

Source

Source

Source

Source

VCC

dv/dt

GND

5

11

6

7

8

9

10

4

3

2

1

VIN

VOUT

EN

N/C

I-Limit

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status, please visit MPS website under Products, Quality Assurance page.

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of Monolithic Power Systems, Inc.