MP2188 – DUAL 3A, 5.5V, 1.2MHz, SYNCHRONOUS STEP-DOWN SWITCHER

MP2188 Rev. 1.01

www.MonolithicPower.com

16

2/2/2016

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TYPICAL APPLICATION CIRCUITS

MP2188

GND

VIN1

C1A

EN1

VIN

3.6V to 5.5V

VOUT2

1.8V / 3 A

SW2

C 3

PG1

PG1

L2

SW1

VOUT1

1.1V / 3 A

C2

22μF

EN2

L1

1μH

OUT1

OUT2

PG2

PG2

1μH

22μF

2X22μF

VIN2

C1B

2X22μF

R5

499k

R6

499k

Figure 4: MP2188 Typical Application Circuit with Symmetric PCB Layout

MP2188

GND

VIN1

C1A

EN1

VIN

.

3.6V to 5.5V

VOUT2

1.8V / 3 A

SW2

C 3

PG1

PG1

L2

SW1

VOUT1

1.1V / 3 A

C2

22μF

EN2

L1

1μH

OUT1

OUT2

PG2

PG2

1μH

22μF

22μF

VIN2

C1B

22μF

Bead

R5

499k

R6

499k

220mΩ@100MHz

Figure 5: MP2188 Typical Application Circuit with Asymmetric PCB Layout