EV2364DF-00A – 1.5A, 23V, 1.4MHz DUAL STEP-DOWN CONVERTER EV BOARD

EV2364DF-00A Rev. 1.2

www.MonolithicPower.com

2

10/6/2005

MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.

© 2005 MPS. All Rights Reserved.

TM

EVALUATION BOARD SCHEMATIC

C5

3.3nF

C4

NS

VOUTA

3.3V @ 1.5A

VIN

5.5V to 23V

GND

GND

D1

MBR0520

OPTIONAL

5V INPUT ONLY

D4

MBR0520

OPTIONAL

5V INPUT ONLY

MP2364_S01

D2

B230A

ENB

C7

10nF

D3

B230A

C8

2.2nF

ENA

U1

C10

NS

VOUTB

2.5V @ 1.5A

GND

MP2364

ENA

COMPA

FBA

SGB

PGB

SWB

INB

NC2

BSB

SSB

SSA

NC1

BSA

INA

SWA

PGA

SGA

FBB

COMPB

ENB

EV2364DF-00A BILL OF MATERIALS

Qty

Ref

Value Description

Manufacturer Part No.

Distributor Part No.

2

D1, D4

Schottky Diode, 20V, 0.5A, SOD-

123

ON Semiconductor:

MBR0520LT1

Digikey:

MBR0520LT1OSCT-ND

2

D2, D3

Schottky Diode, 30V, 2A, SMA

Diodes Inc:

B230A-13

Digikey:

B230ADICT-ND

1

C8

2.2nF Ceramic Capacitor, 50V, 0603, X7R

TDK:

C1608X7R1H222K

Digikey:

445-1309-1-ND

1

C5

3.3nF Ceramic Capacitor, 50V, 0603, X7R

Panasonic:

ECJ-1VB1H332K

Digikey:

PCC1778CT-ND

2

C2, C7

10nF Ceramic Capacitor, 50V, 0603, X7R

TDK:

C1608X7R1H103K

Digikey:

445-1311-1-ND

2

C1, C6 0.47µF Ceramic Capacitor, 16V, 0805, X7R

TDK:

C2012X7R1C474K

Digikey:

445-1357-1-ND

2

C11,

C12

10µF Ceramic Capacitor, 25V, 1210, X7R

TDK:

C3225X7R1E106M

Digikey:

445-1434-1-ND

2

C3, C9

22µF Ceramic Capacitor, 6.3V, 1210, X5R

TDK:

C3225X5R0J226M

Digikey:

445-1404-1-ND

2

C4, C10

Do Not Stuff

2

L1, L2

5µH

Inductor, 2.8A, SMD, Unshielded

Sumida:

CDRH6D28

1

R1

25.5kΩ Resistor, 0603, 1%

Panasonic:

ERJ-3EKF2552V

Digikey:

P25.5KHCT-ND

1

R2

7.5kΩ Resistor, 0603, 5%

Panasonic:

ERJ-3GEYJ752V

Digikey:

P7.5KGCT-ND

3

R3, R5,

R6

10kΩ Resistor, 0603, 1%

Panasonic:

ERJ-3EKF1002V

Digikey:

P10.0KHCT-ND