Linear Technology DC1839A Скачать руководство пользователя страница 8

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dc1839af

DEMO MANUAL DC1839A

Linear Technology  Corporation

1630 McCarthy Blvd., Milpitas, CA 95035-7417 

(408) 432-1900 

 FAX: (408) 434-0507 

 

www.linear.com

© 

LINEAR TECHNOLOGY CORPORATION 2011

LT 0711 • 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

Содержание DC1839A

Страница 1: ...wners PERFORMANCE SUMMARY forced continuous mode In Burst Mode operation which isthepreferredmodeoflowloadcurrentoperation theDC supply current is typically only 1 3mA both channels at no load sleep m...

Страница 2: ...hown in the test set up diagram connect a variable resistor from VIN to VOUT along with an ampmeter The current will be VIN minus VOUT divided by the variable resistor value VDDQ output voltage tolera...

Страница 3: ...3 dc1839af DEMO MANUAL DC1839A VS VARIABLE RESISTOR QUICK START PROCEDURE Figure 1 Proper Measurement Equipment Setup...

Страница 4: ...LTC3634 DC1839A Efficiency Figure 2 Measuring Input or Output Ripple GND VIN LOAD CURRENT A 0 EFFICIENCY 100 10 90 70 50 30 80 60 40 20 0 dc1839a F03 3 0 1 5 2 5 1 0 2 0 0 5 VIN 12V VDDQ 2 5V VTT 1 25...

Страница 5: ...0pF TRACE 3 OUTPUT VOLTAGE 50mV DIV AC TRACE 4 OUTPUT CURRENT 1A DIV dc1839a F04 VIN 12V VTT 0 9V 3A LOAD STEP 3A TO 3A FORCED CONTINUOUS MODE fSW 1MHz EXTERNAL COMPENSATION RITH2 15k CITH2 1000pF TRA...

Страница 6: ...Board Circuit Components 1 0 CC1 CC2 OPTION CAP 0402 10pF 5 25V NPO NIC NMC0402NPO100J25TRPF 2 0 CDDQIN OPTION CAP 0805 10 F 10 6 3V X5R OPTION NIC NMC0805X5R106K6 3TRPLP3KF 3 0 CIN3 CIN4 OPTION CAP 1...

Страница 7: ...GNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SCHEMATIC SUPPLIED FOR USE...

Страница 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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