MP1492 – 2A, 4.2V-16V INPUT, FAST TRANSIENT SYNCHRONOUS STEP-DOWN CONVERTER

MP1492 Rev. 1.1

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17

3/13/2012

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MP1492

1

5

8

6

7

10nF

3

4

2

BYP

EN

FB

SW

BST

FREQ

IN

Figure 13—Typical Application Schematic with Low ESR Ceramic Capacitor

and DC Blocking Capacitor.

Layout Recommendation

1) Put the input capacitors as close as possible

to the IN pin.

2) Put the decoupling capacitor as close as

3) Put the inductor as close as possible to SW

pin. Make the SW pad as large as possible

to minimize the switching noise interference.

4) The FB pin is directly connected to the PWM

comparator. It should be routed away from

the noisy SW node.