MP5087

– 5.5V, 7A LOW RDSON LOAD SWITCH WITH CURRENT MONITORING

MP5087 Rev. 1.2

www.MonolithicPower.com

14

8/16/2017

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Soft Start @ Different Output Capacitance

Soft Start @ Small Capacitance

Soft Start @ Large Capacitance

Soft Start @ Very large

Capacitance

Current Limit

Current Limit

Current Limit

Figure 3: Soft Start Periods at different

output capacitance

Design Example

Some design example and are provided below.

See Table 1 and Figure 4.

Table 1

(V)

Max Load Range

(A)

Rlimit

(k

Ω)

SS cap

(nF)

SS time

(ms)

5

3

26.1

22

4

5

5

15.8

47

9

5

7.5

10.5

100

20

Figure 4: Typical Application Schematic

Layout Guide

PCB layout is very important to achieve stable

operation. Please follow these guidelines and

Put enough vias around IC to achieve better

thermal performance.

GND

EN

Vin

Vin

Vout

GND

GND

IMON

VCC

C1

C2

C3

C4

C5

C6

R1

GND

GND

PG

Figure 5: Recommended Layout