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dc1787af

DEMO MANUAL DC1787A

PARTS LIST

ITEM

QTY

REFERENCE

PART DESCRIPTION

MANUFACTURER/PART NUMBER

Required Circuit Components

1

2

CIN1, CIN2

CAP., X7R, 10μF, 50V, 10%, 1210

MURATA, GRM32ER71H106KA12L

2

1

CIN3

CAP., ELECT., 22μF, 50V, C-CE-BS-6.3X6.0

SUN ELECT., 50CE22BS

3

2

COUT1, COUT2

CAP., X5R, 47μF, 16V, 10%, 1210

MURATA, GRM32ER61C476KE15L

4

1

C1

CAP., X7R, 4.7μF, 50V, 20%, 1210

MURATA, GRM32ER71H475KA88L

5

1

C2

CAP., X7R, 1μF, 50V 10%, 0805

MURATA, GRM21BR71H105KA12L

6

1

C3

CAP., X5R, 4.7μF, 16V, 10%, 0805

MURATA, GRM219R61C475KE15D

7

1

C5

CAP., X7R, 68nF, 50V, 0603

NIC, NMC0603X7R682K50F

8

1

C6

CAP., X7R, 0.1μF, 25V, 10%, 0603

TDK, C1608X7R1E104K

9

1

C7

CAP., C0G, 470pF, 50V, 5%, 0603

MURATA, GCM1885C1H471JA16D

10

1

D3

DIODE, SCHOTTKY, 3A, POWERDI5

DIODES/ZETEX, PDS360-13

11

1

L1

IND, 15μH, L-DUAL-DRQ127

COILTRONICS, DRQ127-150-R

12

1

Q1

MOSFET, N-CHANNEL, LFPAK

RENESAS, RJK0652DPB-00-J5

13

1

RCS

RES SENSE, 0.005Ω, 1/2W, 1%, 2010

VISHAY, WSL20105L000FEA

14

1

RFBB

RES., CHIP, 15.8k, 1/16W, 1%, 0603

VISHAY, CRCW060315K8FKEA

15

1

RFBS

RES., CHIP, 102k, 1/16W, 1%, 0603

VISHAY, CRCW0603102KFKEA

16

1

R1

RES., CHIP, 249k, 1/16W, 1%, 0603

VISHAY, CRCW0603249KFKEA

17

1

R2

RES., CHIP, 100k, 1/16W, 5%, 0603

VISHAY, CRCW0603100KJNEA

18

1

R3

RES., CHIP, 255k, 1/16W, 1%, 0603

VISHAY, CRCW0603255KFKEA

19

1

R4

RES., CHIP, 1.43k, 1/16W, 1%, 0603

VISHAY, CRCW06031K43FKEA

20

1

R5

RES., CHIP, 27.4k, 1/16W, 1%, 0603

VISHAY, CRCW060327K4FKEA

21

1

R6

RES., CHIP, 0Ω, 0603

VISHAY, CRCW06030000Z0ED

22

1

U1

I.C. LT3759EMSE, MSE12

LINEAR TECH.,LT3759EMSE

Hardware/Components (For Demo Board Only)

1

7

E1, E2, E3, E4, E5, E6, E7

TESTPOINT, TURRET, .094"

MILL-MAX, 2501-2-00-80-00-00-07-0

2

2

JP1, JP2

JMP, 3-PIN, 1 ROW .079CC

SAMTEC, TMM-103-02-L-S

3

2

SHUNTS AS SHOWN ON 
ASSY DWG

SHUNT, .079" CENTER

SAMTEC, 2SN-BK-G

4

2

STENCILS BOTH SIDES

DC1787A-2

Additional Demo Board Circuit Components

1

0

D1

DIODE, FAST SWITCHING, 1N4148WT, SOD523F

OPT

Summary of Contents for LT3759

Page 1: ...gy and the Linear logo are registered trademarks of Linear Technology Corporation All other trademarks are the property of their respective owners PERFORMANCE SUMMARY FBXpinarchitecture theLT3759canbeconnecteddirectly to a divider from either positive output or negative output voltage to ground It also packs many popular features such as soft start input undervoltage lockout adjustable frequencyan...

Page 2: ...e regulated at 12V 3 NOTE If there is no output or output is out of spec tem porarily disconnect the load from the demo board Make sure the load current is set within spec and the power supply current capability is above 4A 6 Oncetheproperoutputvoltageisestablished adjustthe input and load within the operating range and observe the output voltage regulation ripple voltage efficiency and other para...

Page 3: ...Placement for Measuring Input or Output Ripple Figure 3 Efficiency Curves Figure 4 Short Circuit Waveforms with Frequency Foldback INPUT OR OUTPUT CAPACITOR dc1787af F02 LOAD CURRENT mA 100 300 500 600 700 800 200 400 900 1000 dc1787af F03 70 EFFICIENCY 75 80 90 85 95 VIN 12V VIN 4V VIN 2 8V dc1787af F04 VO 10V DIV VDS 50V DIV ISW 5A DIV ...

Page 4: ...ET N CHANNEL LFPAK RENESAS RJK0652DPB 00 J5 13 1 RCS RES SENSE 0 005Ω 1 2W 1 2010 VISHAY WSL20105L000FEA 14 1 RFBB RES CHIP 15 8k 1 16W 1 0603 VISHAY CRCW060315K8FKEA 15 1 RFBS RES CHIP 102k 1 16W 1 0603 VISHAY CRCW0603102KFKEA 16 1 R1 RES CHIP 249k 1 16W 1 0603 VISHAY CRCW0603249KFKEA 17 1 R2 RES CHIP 100k 1 16W 5 0603 VISHAY CRCW0603100KJNEA 18 1 R3 RES CHIP 255k 1 16W 1 0603 VISHAY CRCW0603255K...

Page 5: ...CHNOLOGY PARTS SCALE NONE www linear com 2 LT3759EMSE 1 1 M P 2 5 2 1 1 1 0 2 0 3 9 0 SEPIC CONVERTER WITH WIDE INPUT VOLTAGE RANGE KIM T ZHONGMING Y N A DEMO CIRCUIT 1787A SIZE DATE V E R O N C I 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 M...

Page 6: ...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 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 good...

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