MP5010A – 3V-18V, 1A-5A PROGRAMMABLE CURRENT LIMIT SWITCH

MP5010A Rev. 1.0

www.MonolithicPower.com

9

2/7/2013

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PIN FUNCTIONS

Pin #

Name

Description

1-5

SOURCE

Source. Internal power FET source. IC output.

6

N/C

DO NOT CONNECT—leave floating.

7

I-Limit

Current Limit. Using a resistor between this pin and Source to set the overload

and short-circuit current-limit levels.

8

Enable/Fault

Enable/Fault. A tri-state, bi-directional interface. Leave floating to enable the

output. Pull to ground (using an open drain or open collector device) to disable

the output. If a thermal fault occurs, this voltage enters an intermediate state to

signal that the device is in thermal shutdown.

9

dv/dt

Slew Rate. The internal dv/dt circuit controls the slew rate of the output voltage

at turn-on.

10

GND

Ground. Internal IC reference.

11

Exposed Pad

Input. Positive input voltage.

BLOCK DIAGRAM

Therm al

Shutdow n

Latch

C ontrolLogic

SE T

Enable/

Fault

5V

25 A

28k

2.5V

2V H ys

R ESE T

M 1

R 1

D 1

U 1

U 2

U 3

VCC UVLO

dv/dt

C ontrol

G N D

dv/dt

C harge

Pum p

Voltage

Clam p

VC C

C urr

entLim it

Source

I-Lim it

Figure 1: Functional Block Diagram