MP5087A datasheet(13/14 Pages) MPS

Part #	MP5087A

Description	5.5V, 7A Low RDSON Load Switch with Programmable Current Limit, Power Good, and Output Discharge Function

PDF	14 Pages

Scroll/Zoom	100%

Manufacturer	MPS [Monolithic Power Systems]

Direct Link	http://www.monolithicpower.com

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13 / 14 page

5.5V, 7A Low RDSON Load Switch with Programmable Current Limit, Power Good, and Output Discharge Function

MP5087A Rev. 1.0

www.MonolithicPower.com

7/18/2014

MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.

Soft Start @ Different Output Capacitance

VOUT

Soft Start @ Small Capacitance

Soft Start @ Large Capacitance

IIN

VOUT

IIN

VOUT

IIN

Soft Start @ Very large

Capacitance

Current Limit

Figure 3: Soft Start Periods at different output

capacitance

Design Example

Some design examples are provided below.

See Table 1 and Figure 4.

Table 1

VIN

(V)

Max Load Range

(A)

RLIM

(kΩ)

SS cap

(nF)

SS time

(ms)

26.1

15.8

7.5

10.5

100

Figure 4: Typical Application Schematic

Layout Guide

PCB layout is very important to achieve stable

operation. Please follow these guidelines and

take below figure for reference (take schematic

in Figure 4 as an example). Place ILIM resistor

(R1 in Figure 4) close to ILIM pin, input cap

close to VCC pin. Put enough vias around IC to

achieve better thermal performance.

GND

Vin

Vout

GND

ILIM

VCC

GND

Figure 5: Recommended Layout

MP5087A Datasheet(PDF) 13 Page - Monolithic Power Systems

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