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dc2268aif

DEMO MANUAL DC2268A-I

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LINEAR TECHNOLOGY CORPORATION 2017

LT 0817 • 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 application 

engineer.

Mailing Address:

Linear Technology

1630 McCarthy Blvd.

Milpitas, CA 95035

Copyright © 2004, Linear Technology Corporation

Summary of Contents for DC2268A-1

Page 1: ...a single 50A output solution with optional jumper resistors The board allows the user to program how its output ramps up and down L LT LTC LTM Linear Technology the Linear logo µModule and Burst Mode are registered trademarks of Analog Devices Inc All other trademarks are the property of their respective owners BOARD PHOTO through the TRACK SS pin Remote output voltage sens ing is available for im...

Page 2: ...k signal 0V 5V square wave to MODE PLLIN pin 6 Optional LTM4650A 1 can be configured for a 2 phase single output at up to 36A on DC2268A I Install 0Ω resistors on R26 R27 R28 R29 R32 and remove R14 R18 R30 Output voltage is set by R7 based on equation VOUT 0 6V 1 60 4k R7 PERFORMANCE SUMMARY Table 1 PARAMETER CONDITIONS VALUE Input Voltage Range 4 5V 16V Output Voltage VOUT1 VIN 4 5 16V IOUT1 0A 2...

Page 3: ...annel 1 VOUT1 3 3V fSW 600kHz Channel 2 Disabled Figure 4 Measured Efficiency on Channel 2 VOUT2 1 5V fSW 600kHz Channel 1 Disabled IO LOAD CURRENT 0 60 EFFICIENCY 65 70 75 80 85 90 100 95 5 10 15 20 25 2268ai F03 VIN 12V VIN 5V IO LOAD CURRENT 0 60 EFFICIENCY 65 70 75 80 85 90 100 95 5 10 15 20 25 2268ai F04 VIN 12V VIN 5V ...

Page 4: ...Figure 5 Measured Channel 1 12 5A to 18 75A Load Transient VIN 12V VOUT1 3 3V Figure 6 Measured Channel 12 5A to 18 75A Load Transient VIN 12V VOUT2 1 5V 3 3VOUT 20MHz BW 100mV DIV 12 5A to 18 75A LOAD STEP 1 5VOUT 20MHz BW 50mV DIV 12 5A to 18 75A LOAD STEP ...

Page 5: ...I QUICK START PROCEDURE Figure 7 Thermal Performance at VIN 12V VOUT1 3 3V 11A VOUT2 1 5V 11A fSW 600kHz TA 23 C No Forced Airflow Figure 8 Thermal Performance at VIN 12V VOUT1 3 3V 19A VOUT2 1 5V 19A fSW 600kHz TA 23 C 400LFM Airflow ...

Page 6: ...T XAL5030 102MEC 11 2 R2 R22 RES 0603 0Ω JUMPER VISHAY CRCW06030000Z0EA 12 3 R3 R5 R14 RES 0603 100Ω 5 0 1W VISHAY CRCW0603100RJNEA 13 1 R4 RES 0603 121k 1 0 1W VISHAY CRCW0603121KFKEA 14 2 R6 R17 RES 0603 10k 5 0 1W VISHAY CRCW060310K0JNEA 15 1 R7 RES 0603 13 3k 1 0 1W VISHAY CRCW060313K3FKEA 16 1 R9 RES 0603 0Ω VISHAY CRCW06030000Z0EA 17 2 R10 R16 RES 0603 5k 1 0 1W VISHAY CRCW0605K00FKEA 18 1 R...

Page 7: ...e 23 2017 1 1 HIGH EFFICIENCY STEP DOWN MODULE N A LTM4620 LTM4620A LTM4628 Simon T REGULATOR C PROJECTS LTM4650A 1 DC2268A I DC2268A 4_20170623 DSN LTM4630 LTM4630 1 LTM4631 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 MAD...

Page 8: ... 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 i...

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