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dc1185b-a/-bf

DEMO MANUAL 

DC1185B-A/-B

Linear Technology  Corporation

1630 McCarthy Blvd., Milpitas, CA 95035-7417  

(408) 432-1900 

 

FAX

: (408) 434-0507 

 

www.linear.com

 

LINEAR TECHNOLOGY CORPORATION 2013

LT 1213 • PRINTED IN USA

DEMONSTRATION BOARD IMPORTANT NOTICE

Linear Technology Corporation (LTC) provides the enclosed product(s) under the following 

AS IS

 conditions:

This demonstration board (DEMO BOARD) kit being sold or provided by Linear Technology is intended for use for 

ENGINEERING DEVELOPMENT 

OR EVALUATION PURPOSES ONLY

 and is not provided by LTC for commercial use. As such, the DEMO BOARD herein may not be complete 

in terms of required design-, marketing-, and/or manufacturing-related protective considerations, including but not limited to product safety 

measures typically found in finished commercial goods. As a prototype, this product does not fall within the scope of the European Union 

directive on electromagnetic compatibility and therefore may or may not meet the technical requirements of the directive, or other regulations.
If this evaluation kit does not meet the specifications recited in the DEMO BOARD manual the kit may be returned within 30 days from the date 

of delivery for a full refund. THE FOREGOING WARRANTY IS THE EXCLUSIVE WARRANTY MADE BY THE SELLER TO BUYER AND IS IN LIEU 

OF ALL OTHER WARRANTIES, EXPRESSED, IMPLIED, OR STATUTORY, INCLUDING 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 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 responsibility to take any and all 

appropriate precautions with regard to electrostatic discharge. Also be aware that the products herein may not be regulatory compliant or 

agency certified (FCC, UL, CE, etc.).
No License is granted under any patent right or other intellectual property whatsoever. 

LTC assumes no liability for applications assistance, 

customer product design, software performance, or infringement of patents or any other intellectual property rights of any kind.

LTC currently services a variety of customers for products around the world, and therefore this transaction 

is not exclusive

.

Please read the DEMO BOARD manual prior to handling the product

. Persons handling this product must have electronics training and 

observe good laboratory practice standards. 

Common sense is encouraged

.

This notice contains important safety information about temperatures and voltages. For further safety concerns, please contact a LTC applica-

tion engineer.

Mailing Address:

Linear Technology

1630 McCarthy Blvd.

Milpitas, CA 95035

Copyright © 2004, Linear Technology Corporation

Summary of Contents for DC1185B-A

Page 1: ...y of their respective owners Note Q1 Q4 MOSFETs changed on September 10 2013 See Schematic Diagram PERFORMANCE SUMMARY Themainfeaturesoftheboardincludeaninternal5Vlinear regulator for bias RUN pins fo...

Page 2: ...s in the following positions JP1 RUN1 ON JP2 RUN2 ON JP3 MODE CCM With power off connect the input power supply to VIN and GND Turn on the power at the input Note Makesurethattheinputvoltagedoesnotexc...

Page 3: ...ard Use a piece of heavy copper foil 2 Tie ITH1 to ITH2 by stuffing 0 at R49 3 Tie VFB1 to VFB2 by stuffing 0 at R50 4 Tie TRK SS1 to TRK SS2 by stuffing 0 at R52 5 Tie RUN1 to RUN2 by stuffing 0 at R...

Page 4: ...to allow VOUT2 to track an external signal Tables 2 and 3 cover the rail tracking options for each rail with the DC3850B B version used as an example Table 1 VOUT1 Tracking Options for a 1 5V Output...

Page 5: ...loating R42 R44 Open Table 3 VOUT1 Configured as a 2 0V 10A Converter Using DCR Sensing and Discrete Sense Resistors RSENSE FILTER RESISTORS SENSE FIILTER CAPACITOR DCR FILTER DIVIDER RESISTORS SENSE1...

Page 6: ...heexternal clock signal needs to be applied to the LTC3850 s MODE pin which is tied to the turret labeled SYNC The internal phase lock loop is stabilized by a network on the FREQ pin of the LTC3850 To...

Page 7: ...HAY CRCW060330K1FKEA 16 4 R29 R30 R39 R40 RES 0603 100 5 1 10W VISHAY CRCW0603100RJNEA 17 2 R31 R35 RES 0603 8 66k 1 1 10W VISHAY CRCW06038K66FKEA 18 2 R32 R33 RES 0603 20k 1 1 10W VISHAY CRCW060320KF...

Page 8: ...7K8FKEA 16 4 R29 R30 R39 R40 RES 0603 100 5 1 10W VISHAY CRCW0603100RJNEA 17 2 R31 R35 RES 0603 5 9k 1 1 10W VISHAY CRCW06035K90FKEA 18 2 R32 R33 RES 0603 20k 1 1 10W VISHAY CRCW060320KFKEA 19 1 R43 R...

Page 9: ...ponsibility to verify proper and reliable operation in the actual application Component substitution and printed circuit board layout may significantly affect circuit performance or reliability Contac...

Page 10: ...NCLUDING 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...

Page 11: ...Mouser Electronics Authorized Distributor Click to View Pricing Inventory Delivery Lifecycle Information Analog Devices Inc DC1185B A DC1185B B...

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