MP5014A – 12 V, 1A-5 A, PROGRAMMABLE CURRENT-LIMIT SWITCH

MP5014A Rev. 1.0

www.MonolithicPower.com

11

6/23/2015

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APPLICATION INFORMATION

Current Limit

The desired current limit is a function of the

external current limit resistor (see Table 2).

Table 2—Current limit vs. current limit resistor

15.4

22

24.9

30

49.9

100

Trip

current (A)

7.95

5.62

5.23

4.57

3.43

2.64

Hold

current (A)

5.61

3.81

3.35

2.78

1.69

0.88

Rise Time

on DV/DT (see Table 3).

none

33 pF

470 pF

1 nF

Rise time

(typically, ms)

1

1.45

9.6

20.3

The rise time is measured from 10 percent to 90

percent of the output voltage (see Figure 2).

Figure 2—Rise time

PCB LAYOUT GUIDELINES

Efficient PCB layout is critical to achieve stable

operation. Please refer to Figure 3 and follow the

guidelines below:

capacitor close to VCC.

3. Ensure there is a large enough copper

area near VCC and source to achieve

better thermal performance.

Top Layer

Bottom Layer

Figure 3―Recommended PCB layout