B

B

A

A

2

2

1

1

BOOST

INVERTER

SEPIC

2

MFR SPECS CONFIG DIAGRAM ERROR : CORRECT INDUCTOR PIN-OUT.

3/26/01

3

ADD R7; CHG L1, L2, L3.

6/6/01

5

DEMO BOARD RELEASE

01/30/02

LTC CONFIDENTIAL - For Customer Use Only

5

DC397A

Wednesday, January 30, 2002

1

1

SCHEMATIC, LT1930A/31A, 2.2MHz, SOT-23 DC/DC CONVERTER PCB

397A_r5.DSN

NONE

L.SANTOS

02/07/01

A

SIZE

SCALE:

CAGE CODE

DWG NO

REV

SHEET

OF

FILENAME:

TITLE

CONTRACT NO.

APPROVALS

DATE

DRAWN

CHECKED

APPROVED

ENGINEER

DESIGNER

UNLESS OTHERWISE SPECIFIED

DIMENSIONS ARE IN INCHES

TOLERANCE ON ANGLE - - -

2 PLACES - - - 3 PLACES - - -

INTERPRET DIM AND TOL

PER ASME Y14.5M -1994

THIRD ANGLE PROJECTION

DO NOT SCALE DRAWING

TECHNOLOGY

1630 McCarthy Blvd.

Milpitas, CA 95035

Phone: (408)432-1900

Fax: (408)434-0507

INITIATED

1

02/13/01

REVISION HISTORY

DESCRIPTION

DATE

APPROVED

ECO

REV

CORR L2,L3 MFR#: WAS 92Y-153/5. R MV C5;CHG C4,D2,3; C6 TO C5

4

01/17/02

E6

VOUT

12V 250mA

1

L1

2.2uH

LPO1704-222M

C16

OPT.

E7

SHDN

1

C13

1uF

25V

C18

2.2uF

16V

C1

1uF

16V

L3B

3.3uH

3

4

C2

2.2uF

16V

E3

SHDN

1

R2

13.3K

C10

OPT.

D3

UPS140

E1

VIN

5V

1

C3

10pF

C4

2.2uF

16V

R4

13.3K

E2

VOUT

12V 250mA

1

E11

SHDN

1

E8

GND

1

C8

1uF

16V

R5

105K

R6

13.3K

C17

2.2uF

16V

JP1

ON

OFF

2

E10

VOUT

-12V 250mA

1

C14

1uF

16V

E4

GND

1

U1

LT1930A

4

3

SHDN

FB

U3

LT1931A

4

3

SHDN

NFB

L2A

3.3uH

CMD5D13-4371-T004

1

2

C7

1uF

25V

L2B

3.3uH

U2

LT1930A

4

3

SHDN

FB

C12

1uF

16V

C9

2.2uF

16V

C5

1uF

16V

C11

2.2uF

16V

R3

115K

C15

2.2uF

16V

D1

ZHCS400

E12

GND

1

R7

118K

D2

UPS140

C19

1uF

16V

L3A

3.3uH

CMD5D13-4371-T004

1

2

E9

VIN

12V

1

JP3

ON

OFF

2

R1

115K

E5

VIN

10-16V

1

JP2

ON

OFF

2