EV8867-LE-00A – 8A HIGH EFFICIENCY SYNC. STEP DOWN SWITCHER WITH I

EV8867-LE-00A Rev.1.0

www.MonolithicPower.com

2

7/30/2015

MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.

© 2015 MPS. All Rights Reserved.

EVALUATION BOARD SCHEMATIC

9

5

C3

0.47μF

R4

100kΩ

R2

120kΩ

R3

51kΩ

C1A

22µF

C1B

0.1µF

R5

0Ω

C5

0.1µF

R1

80.6kΩ

L1

1.5µH

C6

22pF

C4

22nF

VIN

4.5V-17V

PG

VOUT

1V/8A

13

7

4

3

6

14

8

12

11

10

2

1

EN

R7

NS

R6

NS

SDA

SCL

3.3V

R8

10Ω

C2

22µF

C2A

22µF

C2B

22µF

C2C

22µF

C2D

NS

C1

22µF

C1C

NS

EV8867-LE-00A BILL OF MATERIALS

Qty

RefDes

Value

Description

Package

Manufacturer

Manufacturer P/N

1

R1

80.6k

Film Res,1%

0603

ROYAL

RC0603FR-0780K6L

1

R2

120k

Film Res,1%

0603

ROYAL

RL0603FR-07120KL

1

R3

51k

Film Res,1%

0603

ROYAL

RL0603FR-0751KL

1

R5

0Ω

Film Res,1%

0402

RALEC

RTT020000FTP

1

R4

100k

Film Res,1%

0603

ROYAL

RL0603FR-07100KL

2

R6, R7

NS

1

R8

10 Ω

Film Res,1%

0603

ROYAL

RL0603FR-0710RL

2

C1B, C5

0.1μF

Ceramic

Cap,25V,X7R

0603

muRata

GRM188R71E104KA01D

2

C1A, C1

22μF

Ceramic

Cap,25V,X5R

1206

muRata

GRM31CR61E226KE15L

4

C2, C2A,

C2B, C2C

22μF

Ceramic Cap，

25V,X5R

0805

muRata

GRM21BR61E226ME44L

2

C2D, C1C

NS

1

C3

0.47 μF

Ceramic

Cap,16V,X7R

0603

muRata

GRM188R71C474KA88D

1

C4

22nF

Ceramic

Cap,16V,X7R

0603

muRata

GRM188R71C223KA01D

1

C6

22pF

Ceramic

Cap,50V,C0G

0603

muRata

GRM1885C1H220JA01D

1

L1

1.5μH

IR=11A,Isat=14A,

DCR=6.6m Ω

SMD

Wurth

744 311 150

1

U1

MP8867

Step-Down

Converter with

I2C Interface

QFN14 (3*4)

MPS

MP8867GLE