MPQ5072

– 5.5V, 1A LOW RDS(ON) LOAD SWITCH, AEC-Q100 QUALIFIED

MPQ5072 Rev. 1.0

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12

10/16/2020

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VOUT

IIN

Current Limit

Soft Start with a Small Capacitance

Soft Start with a Very Large Capacitance

Soft Start with Different Output Capacitances

VOUT

IIN

Current Limit

VOUT

IIN

Current Limit

Soft Start with a Large Capacitance

Figure 3: Soft Start at Different Output

Capacitances

Design Example

For design examples, see Table 1 and Figure 5.

Table 1: Recommended RLIM and CSS Values

VIN

(V)

Max Load

Range (A)

RLIMIT

(k

Ω)

SS Capacitance

(nF)

SS Time

(ms)

3.6

0.5

47

22

1

3.6

1

27.4

47

2.4

PCB Layout Guidelines

PCB layout is critical for stable operation. For the

best results, refer to Figure 4 and follow the

guidelines below:

1. Place RILIM close to the ILIM pin.

2. Place the input capacitor close to the VCC pin.

3. Place vias around the IC to improve thermal

performance.

Figure 4: Recommended PCB Layout