Linear LT3748 Demo Manual Download Page 7

7

dc1860bfa

DEMO MANUAL DC1860B

Information furnished by Linear Technology Corporation is believed to be accurate and reliable.  

However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa-

tion that the interconnection of its circuits as described herein will not infringe on existing patent rights.

scheMAtic DiAgrAM

A

A

B

B

C

C

D

D

E

E

4

4

3

3

2

2

1

1

Op

tio

n

a

C

ir

c

u

it

VI

N

SW

VO

PT

DI

O

DE

VO

PT

VO

UT

+

S

IZ

E

DAT

E

:

IC

 N

O

.

R

E

V.

SH

EET

O

F

TITLE

:

AP

P

R

OVALS

P

CB 

DE

S

.

A

PP 

EN

G

.

T

E

CHNO

L

O

G

Y



 





C

U

ST

O

M

ER

 N

O

T

IC

E

L

INEAR 

T

ECHNO

L

O

G

HAS 

M

ADE 

BEST

 EF

F

O

RT

 T

O

 DESI

G

A

CI

RCUI

T

 T

HAT

 M

EET

CUST

O

M

ER-

SUPPL

IED 

SPECI

F

ICAT

IO

NS

;

HO

W

EVER,

 IT

 REM

AI

NS 

T

HE 

CUST

O

M

ER'

RESPO

NSI

BI

L

IT

T

O

VERI

F

PRO

PER 

AND 

REL

IABL

O

PERAT

IO

IN 

T

HE 

ACT

UAL

APPL

ICAT

IO

N.

  CO

M

PO

NENT

 SUBST

IT

UT

IO

AND 

PRI

NT

ED

CI

RCUI

T

 BO

ARD 

L

AYO

UT

 M

AY 

SI

G

NI

F

ICANT

L

AF

F

ECT

 CI

RCU

IT

PERF

O

RM

ANCE 

O

REL

IABI

L

IT

Y.

  CO

NT

ACT

 L

INEAR

T

ECHNO

L

O

G

APPL

ICAT

IO

NS 

ENG

INEERI

NG

 F

O

ASSI

ST

ANCE.

T

HI

CI

RCUI

T

 IS 

PRO

PRI

ET

ARY 

T

O

 L

INEAR 

T

ECHNO

L

O

G

AN

D

S

CHE

M

AT

IC

SUPPL

IED 

F

O

USE 

W

IT

L

INEAR 

T

ECHNO

L

O

G

PART

S.

S

CAL

E

 =

 NO

NE

w

w

w

.li

near

.c

om

1





2

2









Z

H

ON

GM

IN

Y

.

C:

\PADS 

PRO

JECT

S\

18

60

B\

REV_

B(

09

-1

7-

12

)\

SCH\

18

60

B_

RE

V1

.DSN

S

IZ

E

DAT

E

:

IC

 N

O

.

R

E

V.

SH

EET

O

F

TITLE

:

AP

P

R

OVALS

P

CB 

DE

S

.

A

PP 

EN

G

.

T

E

CHNO

L

O

G

Y



 





C

U

ST

O

M

ER

 N

O

T

IC

E

L

INEAR 

T

ECHNO

L

O

G

HAS 

M

ADE 

BEST

 EF

F

O

RT

 T

O

 DESI

G

A

CI

RCUI

T

 T

HAT

 M

EET

CUST

O

M

ER-

SUPPL

IED 

SPECI

F

ICAT

IO

NS

;

HO

W

EVER,

 IT

 REM

AI

NS 

T

HE 

CUST

O

M

ER'

RESPO

NSI

BI

L

IT

T

O

VERI

F

PRO

PER 

AND 

REL

IABL

O

PERAT

IO

IN 

T

HE 

ACT

UAL

APPL

ICAT

IO

N.

  CO

M

PO

NENT

 SUBST

IT

UT

IO

AND 

PRI

NT

ED

CI

RCUI

T

 BO

ARD 

L

AYO

UT

 M

AY 

SI

G

NI

F

ICANT

L

AF

F

ECT

 CI

RCU

IT

PERF

O

RM

ANCE 

O

REL

IABI

L

IT

Y.

  CO

NT

ACT

 L

INEAR

T

ECHNO

L

O

G

APPL

ICAT

IO

NS 

ENG

INEERI

NG

 F

O

ASSI

ST

ANCE.

T

HI

CI

RCUI

T

 IS 

PRO

PRI

ET

ARY 

T

O

 L

INEAR 

T

ECHNO

L

O

G

AN

D

S

CHE

M

AT

IC

SUPPL

IED 

F

O

USE 

W

IT

L

INEAR 

T

ECHNO

L

O

G

PART

S.

S

CAL

E

 =

 NO

NE

w

w

w

.li

near

.c

om

1





2

2









Z

H

ON

GM

IN

Y

.

C:

\PADS 

PRO

JECT

S\

18

60

B\

REV_

B(

09

-1

7-

12

)\

SCH\

18

60

B_

RE

V1

.DSN

S

IZ

E

DAT

E

:

IC

 N

O

.

R

E

V.

SH

EET

O

F

TITLE

:

AP

P

R

OVALS

P

CB 

DE

S

.

A

PP 

EN

G

.

T

E

CHNO

L

O

G

Y



 





C

U

ST

O

M

ER

 N

O

T

IC

E

L

INEAR 

T

ECHNO

L

O

G

HAS 

M

ADE 

BEST

 EF

F

O

RT

 T

O

 DESI

G

A

CI

RCUI

T

 T

HAT

 M

EET

CUST

O

M

ER-

SUPPL

IED 

SPECI

F

ICAT

IO

NS

;

HO

W

EVER,

 IT

 REM

AI

NS 

T

HE 

CUST

O

M

ER'

RESPO

NSI

BI

L

IT

T

O

VERI

F

PRO

PER 

AND 

REL

IABL

O

PERAT

IO

IN 

T

HE 

ACT

UAL

APPL

ICAT

IO

N.

  CO

M

PO

NENT

 SUBST

IT

UT

IO

AND 

PRI

NT

ED

CI

RCUI

T

 BO

ARD 

L

AYO

UT

 M

AY 

SI

G

NI

F

ICANT

L

AF

F

ECT

 CI

RCU

IT

PERF

O

RM

ANCE 

O

REL

IABI

L

IT

Y.

  CO

NT

ACT

 L

INEAR

T

ECHNO

L

O

G

APPL

ICAT

IO

NS 

ENG

INEERI

NG

 F

O

ASSI

ST

ANCE.

T

HI

CI

RCUI

T

 IS 

PRO

PRI

ET

ARY 

T

O

 L

INEAR 

T

ECHNO

L

O

G

AN

D

S

CHE

M

AT

IC

SUPPL

IED 

F

O

USE 

W

IT

L

INEAR 

T

ECHNO

L

O

G

PART

S.

S

CAL

E

 =

 NO

NE

w

w

w

.li

near

.c

om

1





2

2









Z

H

ON

GM

IN

Y

.

C:

\PADS 

PRO

JECT

S\

18

60

B\

REV_

B(

09

-1

7-

12

)\

SCH\

18

60

B_

RE

V1

.DSN

C1

6

100uF 63V (O

p

t)

C1

6

100uF 63V (O

p

t)

L2

47uH

VI

SHAY

IH

LP

-4040D

Z-

E

R

-470-

M

11

(O

p

t)

L2

47uH

VI

SHAY

IH

LP

-4040D

Z-

E

R

-470-

M

11

(O

p

t)

T2

750311456

(O

p

t)

T2

750311456

(O

p

t)

3

5

2

1

9

6 7

10

T3

750311604

(O

p

t)

T3

750311604

(O

p

t)

6

5

9

3

1

12

4

2

11

8

Summary of Contents for LT3748

Page 1: ...M Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation All other trademarks are the property of their respective owners PERFORMANCE SUMMARY efficiency small...

Page 2: ...re placed in the output to clamp the output voltage to 52 5V without ex board preload requirement The efficiency is higher than 90 without the preload resistors but the output may exceed 57V under no...

Page 3: ...3 dc1860bfa DEMO MANUAL DC1860B quick start procedure Figure 1 Proper Measurement Equipment Setup Figure 2 Proper Scope Probe Placement for Measuring Input or Output Ripple VOUT GND COUT dc1860b F02...

Page 4: ...dc1860b F03 VIN 15V VIN 13 2V VIN 10V LOAD CURRENT mA 0 50 0 Output Voltage V 52 0 52 5 50 5 51 0 51 5 53 0 600 700 200 100 300 400 500 dc1860b F04 VIN 10V VIN 15V quick start procedure Figure 3 Typi...

Page 5: ...603 Vishay CRCW0603200KFKEA 19 1 R5 Res Chip 36k 0 06W 5 0603 Vishay CRCW060336K0JNEA 20 1 R6 Res Chip 82 5k 0 06W 1 0603 Vishay CRCW060382K5FKEA 21 1 R8 Res Chip 22 0 06W 5 0603 Vishay CRCW060322R0JN...

Page 6: ...RCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SC...

Page 7: ...UIT THAT MEETS CUSTOMER SUPPLIED SPECIFICATIONS HOWEVER IT REMAINS THE CUSTOMER S RESPONSIBILITY TO VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION COMPONENT SUBSTITUTION AND PRINTED CI...

Page 8: ...CLUDING ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE EXCEPT TO THE EXTENT OF THIS INDEMNITY NEITHER PARTY SHALL BE LIABLE TO THE OTHER FOR ANY INDIRECT SPECIAL INCIDENTAL OR C...

Page 9: ...Mouser Electronics Authorized Distributor Click to View Pricing Inventory Delivery Lifecycle Information Analog Devices Inc DC1860B...

Reviews: