MP2187 – DUAL 3A, 5.5V, 1.2MHz, SYNCHRONOUS STEP-DOWN SWITCHER

MP2187 Rev. 1.0

www.MonolithicPower.com

17

12/12/2014

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TYPICAL APPLICATION CIRCUITS

MP2187

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

PFL

PFL

1μH

22μF

22μF

VIN2

C1B

22μF

R5

100k

R6

100k

R3

976k

R4

243k

PFS

Figure4: MP2187 Typical Application Circuit for Symmetric PCB Layout

MP2187

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

PFL

PFL

1μH

22μF

22μF

VIN2

C1B

22μF

Bead

R5

100k

R6

100k

R3

976k

R4

243k

PFS

Figure 5: MP2187 Typical Application Circuit for Asymmetric PCB Layout