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dc1886af

DEMO MANUAL DC1886A

schematic Diagram

5

5

4

4

3

3

2

2

1

1

D

D

C

C

B

B

A

A

ALL CAPACITORS ARE IN MICROFARADS, 0603.

NOTES:  UNLESS OTHERWISE SPECIFIED

2.  INSTALL SHUNTS AS SHOWN.

1.  ALL RESISTORS ARE IN OHMS, 0402.

2ms

12ms

TIMER

OFF

ON

AUTORETRY

DURATION

VOUT

VDD

SIZE

DATE:

IC NO.

REV.

SHEET

OF

TITLE:

APPROVALS

PCB DES.

APP ENG.

TECHNOLOGY

Fax: (408)434-0507

Milpitas, CA 95035 Phone: (408)432-1900

1630 McCarthy Blvd.

LTC Confidential-For Customer Use Only

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 LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.

THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND

SCHEMATIC

SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.

SCALE = NONE

www.linear.com

1

LTC4232IDHC

09/08/2011, 11:34 AM

1

1

5A INTEGRATED HOT SWAP CONTROLLER

KIM T.

VLADIMIR O.

N/A

DEMO CIRCUIT 1886A

SIZE

DATE:

IC NO.

REV.

SHEET

OF

TITLE:

APPROVALS

PCB DES.

APP ENG.

TECHNOLOGY

Fax: (408)434-0507

Milpitas, CA 95035 Phone: (408)432-1900

1630 McCarthy Blvd.

LTC Confidential-For Customer Use Only

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 LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.

THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND

SCHEMATIC

SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.

SCALE = NONE

www.linear.com

1

LTC4232IDHC

09/08/2011, 11:34 AM

1

1

5A INTEGRATED HOT SWAP CONTROLLER

KIM T.

VLADIMIR O.

N/A

DEMO CIRCUIT 1886A

SIZE

DATE:

IC NO.

REV.

SHEET

OF

TITLE:

APPROVALS

PCB DES.

APP ENG.

TECHNOLOGY

Fax: (408)434-0507

Milpitas, CA 95035 Phone: (408)432-1900

1630 McCarthy Blvd.

LTC Confidential-For Customer Use Only

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 LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.

THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND

SCHEMATIC

SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.

SCALE = NONE

www.linear.com

1

LTC4232IDHC

09/08/2011, 11:34 AM

1

1

5A INTEGRATED HOT SWAP CONTROLLER

KIM T.

VLADIMIR O.

N/A

DEMO CIRCUIT 1886A

REVISION HISTORY

DESCRIPTION

DATE

APPROVED

ECO

REV

VLADIMIR O.

1ST PROTOTYPE

1

09-08-11

_

REVISION HISTORY

DESCRIPTION

DATE

APPROVED

ECO

REV

VLADIMIR O.

1ST PROTOTYPE

1

09-08-11

_

REVISION HISTORY

DESCRIPTION

DATE

APPROVED

ECO

REV

VLADIMIR O.

1ST PROTOTYPE

1

09-08-11

_

RSET OPT 0805

RSET OPT 0805

R10 226k

R10 226k

R1 3.3k

R1 3.3k

C1 1uF 25V

C1 1uF 25V

E10

ISET

E10

ISET

E3

GND

E3

GND

R3 3.3k

R3 3.3k

D2 LN1351C (GREEN)

D2 LN1351C (GREEN)

2

1

E5

UV

E5

UV

R4 150k

R4 150k

+

COUT2 OPT

+

COUT2 OPT

C2 0.1uF 16V

C2 0.1uF 16V

JP1JP1

1

2

3

CGATE OPT

CGATE OPT

R7 20k

R7 20k

JP2JP2

1

2

3

U1

LTC4232IDHC

U1

LTC4232IDHC

OV

3

FLT

12

UV

2

IMON

14

VDD

1

TIMER

4

INTVCC

5

ISET

15

PG

11

GATE

10

FB

13

OUT

9

GND

6

VDD

16

OUT

8

OUT

7

SENSE

17

E7

FLT

E7

FLT

RMON 20k 0805

RMON 20k 0805

R2 3.3k

R2 3.3k

R6 20k

R6 20k

+

CIN1 OPT

+

CIN1 OPT

E12

INTVCC

E12

INTVCC

D4 LN1351C (GREEN)

D4 LN1351C (GREEN)

2

1

D5 LN1251C (RED)

D5 LN1251C (RED)

2

1

D1

SMAJ22A

D1

SMAJ22A

2

1

R5 3.3k

R5 3.3k

E8

PG

E8

PG

E1

VDD 12V

E1

VDD 12V

E11

IMON

E11

IMON

R8 20k

R8 20k

D3 LN1251C (RED)

D3 LN1251C (RED)

2

1

R9 140k

R9 140k

RGATE OPT

RGATE OPT

E9

TIMER

E9

TIMER

E6

OV

E6

OV

E4

GND

E4

GND

E2

VOUT 12V / 5A

E2

VOUT 12V / 5A

+

COUT1 22uF 25V 7343

+

COUT1 22uF 25V 7343

Summary of Contents for DC1886A

Page 1: ...easily be evaluated Design files for this circuit board are available at http www linear com demo L LT LTC LTM Linear Technology and the Linear logo are registered trademarks and Hot Swap is a tradema...

Page 2: ...oper measurement equipment setup and follow the procedure below Demonstration Circuit 1886A has two user configurable jumper options JP1 TIMER DURATION Set to 2ms for the internal 2ms timer or 12ms de...

Page 3: ...nd the load current D2 and D4 should both be lit input voltage and output voltage respectively and both D3 FLT and D5 PG should be off On power up observe the slope of VOUT This should be in the range...

Page 4: ...ero C I dV dt 1 2A 0 55V ms 2182 F Thus the circuit will always power up successfully with a 2000 F capacitor at VOUT and observation of the TIMER turret post will show that it never begins to ramp Fi...

Page 5: ...final value The correct way to ensure successful power up into an output capacitance greater than 2000 F is to reduce the ramp rate by installing a 1k resistor and a suitable capacitor for RGATE and C...

Page 6: ...HOT SWAP CONTROLLER KIM T VLADIMIR O N A DEMO CIRCUIT 1886A SIZE DATE IC NO REV SHEET OF TITLE APPROVALS PCB DES APP ENG TECHNOLOGY Fax 408 434 0507 Milpitas CA 95035 Phone 408 432 1900 1630 McCarthy...

Page 7: ...DIODE 400W TRANSIENT VOLTAGE SUPPRESSOR SMA DIODE DIODES INC SMAJ22A 7 2 D2 D4 LED SMT GREEN PANASONIC LN1351C TR 8 2 D3 D5 LED SMT RED PANASONIC LN1251C TR 9 4 E1 E2 E3 E4 TURRET TEST PIN 094 MILL M...

Page 8: ...DING 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 CONS...

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