background image

5

dc1555bfa

DEMO MANUAL DC1555B

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 representation 

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

scheMAtic DiAgrAM

5

5

4

4

3

3

2

2

1

1

D

D

C

C

B

B

A

A























 







R

E

VI

S

ION 

HI

S

T

OR

Y

D

E

S

C

R

IP

T

IO

N

D

A

TE

A

P

P

R

O

V

E

D

E

CO

RE

V









R

E

VI

S

ION 

HI

S

T

OR

Y

D

E

S

C

R

IP

T

IO

N

D

A

TE

A

P

P

R

O

V

E

D

E

CO

RE

V









R

E

VI

S

ION 

HI

S

T

OR

Y

D

E

S

C

R

IP

T

IO

N

D

A

TE

A

P

P

R

O

V

E

D

E

CO

RE

V









SI

Z

E

M

O

DI

F

Y

 DAT

E

:

IC 

NO

.

R

EV.

SH

EET

O

F

T

IT

L

E

:

AP

P

R

OVAL

S

P

CB 

DE

S

.

A

PP

 EN

G

.

T

E

CHNO

L

O

G

Y



 



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

CUS

T

O

M

E

R NO

T

ICE

L

INE

AR 

T

E

CHNO

L

O

G

Y

 HAS

 M

ADE

 A 

BE

S

T

 E

F

F

O

RT

 T

O

 DE

S

IG

A

CI

RCUI

T

 T

HAT

 M

E

E

T

S

 CUS

T

O

M

E

R-

S

UP

P

L

IE

S

P

E

CI

F

ICAT

IO

NS

;

H

O

W

EVER

IT

 R

EM

A

IN

T

H

C

U

ST

O

M

ER

'S 

R

ESPO

N

SI

B

IL

IT

T

O

V

E

RI

F

Y

 P

RO

P

E

AND 

RE

L

IABL

E

 O

P

E

RAT

IO

IN 

T

HE

 ACT

UAL

AP

P

L

ICAT

IO

N.

  

CO

M

P

O

NE

NT

 S

UBS

T

IT

UT

IO

AND 

P

RI

NT

E

D

CI

RCUI

T

 BO

ARD 

L

AY

O

UT

 M

AY

 S

IG

NI

F

ICANT

L

Y

 AF

F

E

CT

 CI

RCU

IT

P

E

RF

O

RM

ANCE

 O

RE

L

IABI

L

IT

Y

 CO

NT

ACT

 L

INE

AR

T

E

CHNO

L

O

G

Y

 AP

P

L

ICAT

IO

NS

 E

NG

INE

E

RI

NG

 F

O

AS

S

IS

T

ANCE

.

T

HI

S

 CI

RCUI

T

 I

S

 P

RO

P

RI

E

T

ARY

 T

O

 L

INE

AR 

T

E

CHNO

L

O

G

Y

 AN

D

S

CHE

M

AT

IC

S

UP

P

L

IE

F

O

US

E

 W

IT

L

INE

AR 

T

E

CHNO

L

O

G

Y

 P

ART

S

.

S

CAL

E

 =

 NO

NE

w

w

w

.l

inear

.com

1





1

1









Vl

a

d

 O

.



SI

Z

E

M

O

DI

F

Y

 DAT

E

:

IC 

NO

.

R

EV.

SH

EET

O

F

T

IT

L

E

:

AP

P

R

OVAL

S

P

CB 

DE

S

.

A

PP 

EN

G

.

T

E

CHNO

L

O

G

Y



 



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

CUS

T

O

M

E

R NO

T

ICE

L

INE

AR 

T

E

CHNO

L

O

G

Y

 HAS

 M

ADE

 A 

BE

S

T

 E

F

F

O

RT

 T

O

 DE

S

IG

A

CI

RCUI

T

 T

HAT

 M

E

E

T

S

 CUS

T

O

M

E

R-

S

UP

P

L

IE

S

P

E

CI

F

ICAT

IO

NS

;

H

O

W

EVER

IT

 R

EM

A

IN

T

H

C

U

ST

O

M

ER

'S 

R

ESPO

N

SI

B

IL

IT

T

O

V

E

RI

F

Y

 P

RO

P

E

AND 

RE

L

IABL

E

 O

P

E

RAT

IO

IN 

T

HE

 ACT

UAL

AP

P

L

ICAT

IO

N.

  

CO

M

P

O

NE

NT

 S

UBS

T

IT

UT

IO

AND 

P

RI

NT

E

D

CI

RCUI

T

 BO

ARD 

L

AY

O

UT

 M

AY

 S

IG

NI

F

ICANT

L

Y

 AF

F

E

CT

 CI

RCU

IT

P

E

RF

O

RM

ANCE

 O

RE

L

IABI

L

IT

Y

 CO

NT

ACT

 L

INE

AR

T

E

CHNO

L

O

G

Y

 AP

P

L

ICAT

IO

NS

 E

NG

INE

E

RI

NG

 F

O

AS

S

IS

T

ANCE

.

T

HI

S

 CI

RCUI

T

 I

S

 P

RO

P

RI

E

T

ARY

 T

O

 L

INE

AR 

T

E

CHNO

L

O

G

Y

 AN

D

S

CHE

M

AT

IC

S

UP

P

L

IE

F

O

US

E

 W

IT

L

INE

AR 

T

E

CHNO

L

O

G

Y

 P

ART

S

.

S

CAL

E

 =

 NO

NE

w

w

w

.l

inear

.com

1





1

1









Vl

a

d

 O

.



SI

Z

E

M

O

DI

F

Y

 DAT

E

:

IC 

NO

.

R

EV.

SH

EET

O

F

T

IT

L

E

:

AP

P

R

OVAL

S

P

CB 

DE

S

.

A

PP 

EN

G

.

T

E

CHNO

L

O

G

Y



 



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

CUS

T

O

M

E

R NO

T

ICE

L

INE

AR 

T

E

CHNO

L

O

G

Y

 HAS

 M

ADE

 A 

BE

S

T

 E

F

F

O

RT

 T

O

 DE

S

IG

A

CI

RCUI

T

 T

HAT

 M

E

E

T

S

 CUS

T

O

M

E

R-

S

UP

P

L

IE

S

P

E

CI

F

ICAT

IO

NS

;

H

O

W

EVER

IT

 R

EM

A

IN

T

H

C

U

ST

O

M

ER

'S 

R

ESPO

N

SI

B

IL

IT

T

O

V

E

RI

F

Y

 P

RO

P

E

AND 

RE

L

IABL

E

 O

P

E

RAT

IO

IN 

T

HE

 ACT

UAL

AP

P

L

ICAT

IO

N.

  

CO

M

P

O

NE

NT

 S

UBS

T

IT

UT

IO

AND 

P

RI

NT

E

D

CI

RCUI

T

 BO

ARD 

L

AY

O

UT

 M

AY

 S

IG

NI

F

ICANT

L

Y

 AF

F

E

CT

 CI

RCU

IT

P

E

RF

O

RM

ANCE

 O

RE

L

IABI

L

IT

Y

 CO

NT

ACT

 L

INE

AR

T

E

CHNO

L

O

G

Y

 AP

P

L

ICAT

IO

NS

 E

NG

INE

E

RI

NG

 F

O

AS

S

IS

T

ANCE

.

T

HI

S

 CI

RCUI

T

 I

S

 P

RO

P

RI

E

T

ARY

 T

O

 L

INE

AR 

T

E

CHNO

L

O

G

Y

 AN

D

S

CHE

M

AT

IC

S

UP

P

L

IE

F

O

US

E

 W

IT

L

INE

AR 

T

E

CHNO

L

O

G

Y

 P

ART

S

.

S

CAL

E

 =

 NO

NE

w

w

w

.l

inear

.com

1





1

1









Vl

a

d

 O

.



















  

  





















+

   

+

   

 



 



















  

  









  

  

  

  

   

   

































  

  

















 

 

 

 

  

  

















 



 



























 



 









V

IN

GA

T

E

UV

V

OU

T

FA

U

L

T

OV

GN

D

S

HDN

  

  







 



 



 

 

















Downloaded from

Arrow.com.

Downloaded from

Arrow.com.

Downloaded from

Arrow.com.

Downloaded from

Arrow.com.

Downloaded from

Arrow.com.

Summary of Contents for DC1555B

Page 1: ...r two back to back connected power MOSFETs three jumpers and three LEDs to indicate the input and output voltages and the FAULT pin signal Design files for this circuit board are available at http www linear com demo SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS VIN Board Input Voltage Range 30 30 V VIN UVLO Input Supply Undervoltage Lockout VIN Rising 1 8 2 2 2 4 V IVIN Input Supply Current SHDN ...

Page 2: ... 5V all LEDs are off and input current is 1 8mA FET leakage or other board leakage paths can pull VOUT slightly nega tive but it will be clamped by the internal protection diode 7 Ramp supply back to 0V quick start procedure protection circuit automatically isolates the load from negative input voltages During normal operation a high voltage charge pump enhances the gate of external N channel powe...

Page 3: ...5b F01a POWER SUPPLY 0V TO 30V LOAD dc1555b F01b R POWER SUPPLY quick start procedure Figure 1a Reverse Voltage Measurement Figure 1b Undervoltage Overvoltage Measurement Downloaded from Arrow com Downloaded from Arrow com Downloaded from Arrow com ...

Page 4: ... DFLT40A PbF 11 4 E1 E2 E6 E7 Turret Testpoint 0 094 Mill Max 2501 2 00 80 00 00 07 0 12 4 E3 E4 E5 E8 Turret Testpoint 0 063 Mill Max 2308 2 00 80 00 00 07 0 13 3 JP1 JP2 JP3 Headers Sgl Row 3 Pins 2mm Ctrs Samtec TMM 103 02 L S 14 1 Q1 Dual N Channel 30V SO 8 Vishay SI4230DY T1 GE3 15 0 Q2 OPT Dual N Channel Low Current SOT 563 Diodes Inc 2N7002V 7 16 1 R1 Bal to 1608A Resistor Chip 1M 0 06W 1 0...

Page 5: ...TLE APPROVALS PCB DES APP ENG TECHNOLOGY CUSTOMER NOTICE LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT 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 CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY CONTACT...

Page 6: ...E EXCEPT TO THE EXTENT OF THIS INDEMNITY NEITHER PARTY SHALL BE LIABLE TO THE OTHER FOR ANY INDIRECT SPECIAL INCIDENTAL OR CONSEQUENTIAL DAMAGES The user assumes all responsibility and liability for proper and safe handling of the goods Further the user releases LTC from all claims arising from the handling or use of the goods Due to the open construction of the product it is the user s responsibi...

Reviews: