Linear Technology LTM4645 Demo Manual Download Page 6

6

dc2681aaf

DEMO MANUAL DC2681A-A

PARTS LIST

ITEM

QTY REFERENCE

PART DESCRIPTION

MANUFACTURER/PART NUMBER

Required Circuit Components

1

1

CIN1

CAP., ALUM., 150µF, 35V, 20%, HVH 

SUN ELECTRONIC INDUSTRIES CORP., 35HVH150MT

2

3

CIN3, CIN4

CAP., 22µF, X5R, 25V, 20%,1210

MURATA, GRM32ER61E226ME15L 

3

3

COUT1, COUT2, COUT4

CAP., 100µF, X5R, 6.3V, 20%, 1210

MURATA,GRM32ER60J107ME20L

4

2

COUT7, COUT8

CAP., POSCAP, 330µF, 2V, D2E

PANASONIC, 2TPF330M6

5

1

C2

CAP., 4.7µF, X5R, 10V, 10%, 0603

AVX, 0603ZD475KAT2A

6

1

C3

CAP., 0.1µF, X7R, 16V, 10%, 0603

AVX, 0603YC104KAT2A

7

1

C5

CAP., 120pF, X7R, 50V,10%, 0603

YAGEO, CC0603KRX7R9BB121

8

1

C8

CAP., 1µF, X7R, 50V,10%, 0805

MURATA, GRM21BR71H105KA12L

9

1

C11

CAP., 1µF, X7R, 50V,10%, 0603

TAIYO YUDEN, UMK107AB7105KA-T

10

1

Q1

XSTR., MOSFET, N-CH, 40V, TO-252

VISHAY, SUD50N04-8M8P-4GE3

11

2

R3, R19

RES., 10k, 1/10W, 1%, 0603

VISHAY, CRCW060310K0FKEA

12

1

R4

RES., 100k, 1/10W, 1%, 0603

VISHAY, CRCW0603100KFKEA

13

1

R9

RES., 47.5k, 1/10W, 1%, 0603

VISHAY, CRCW060347K5FKEA

14

2

R14, R16

RES., 10Ω, 1/10W, 5%, 0603

VISHAY, CRCW060310R0JNEA

15

1

R15

RES., 90.9k, 1/10W, 1%, 0603

VISHAY, CRCW060390K9FKEA

16

1

R20

RES., SENSE, 0.01Ω, 1/2W, 1%, 2010

VISHAY, WSL2010R0100FEA

17

1

R25

RES., 2.2Ω, 1/10W, 5%, 0603

VISHAY, CRCW06032R2JNEA

18

1

R26

RES., 50k, 1/10W, 1%, 0603

VISHAY, CRCW060350K0FKEA

19

1

U1

IC, LTM4645EY#PBF  BGA77-15

×

9-5.01

LINEAR TECH., LTM4645EY#PBF

Additional Demo Board Circuit Components

1

0

CIN2

CAP., OPTION, 1206

MURATA, GRM31CR6YA106KA12L

2

0

CIN5, COUT3, COUT5, COUT6, 

COUT9, COUT10

CAP., OPTION, 1210

OPT

3

0

COUT11, COUT12

CAP., OPTION, D3L

OPT

4

0

C4, C6, C7, C9

CAP., OPTION, 0603

OPT

5

6

R1, R6, R13, R18, R21, R27

RES., 0Ω, 1/10W, 0603

VISHAY, CRCW06030000Z0EA

6

0

R8, R10, R11, R17, R22, R23, 

R24, R28

RES., OPTION, 0603

OPT

Hardware: For Demo Board Only

1

18

E1-E18

TESTPOINT, TURRET, .062"

MILL-MAX, 2308-2-00-80-00-00-07-0

2

1

JP1

CONN., HEADER, 2

×

4, 2mm

SULLINS, NRPN042PAEN-RC

3

1

JP2

CONN., HEADER, 1

×

3, 2mm

SULLINS, NRPN031PAEN-RC

4

2

J1,J3

CONN., BANANA JACK

KEYSTONE, 575-4

5

2

J2,J4

STUD, TESTPIN

PEM, KFH-032-10

6

4

J2,J4 (

×

2)

NUT, BRASS 10-32

ANY, #10-32M/S BR PL

7

2

J2,J4

RING, LUG #10

KEYSTONE, 8205

8

2

J2,J4

WASHER, TIN PLATED BRASS

ANY, #10 EXT BZ TN

9

2

J5,J6

CONN, BNC, 5 PINS

CONNEX, 112404

10

2

XJP1, XJP2

SHUNT, 2mm

SAMTEC, 2SN-BK-G

11

4

MTGS. at 4 CORNERS

STAND-OFF, NYLON, SNAP-ON, 0.50" TALL

KEYSTONE, 8833 (SNAP ON)

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Summary of Contents for LTM4645

Page 1: ...efficiency at low load currents the MODE_PLLIN jumper selects pulse skipping mode for noise sensitive applications or burst mode operation in L LT LTC LTM Module Linear Technology and the Linear logo...

Page 2: ...am eters 5 Optional For optional load transient test apply an adjustable pulse signal between IOSTEP_CLK and GND test points The pulse amplitude sets the load step cur rent amplitude Keep the pulse wi...

Page 3: ...3 dc2681aaf DEMO MANUAL DC2681A A QUICK START PROCEDURE Figure 1 Measurement Setup of DC2681A A LOAD VIN dc2681aaf F01 Downloaded from Arrow com Downloaded from Arrow com Downloaded from Arrow com...

Page 4: ...00 25 00 OUTPUT CURRENT A 1 8 VOUT 1 5 VOUT 1 2 VOUT 1 0 VOUT 0 8 VOUT dc2681aaf F02 VOUT 50mV DIV IOUT_STEP 10A DIV dc2681aaf F03 Figure 2 Measured Efficiency at VIN 12 0V fSW 600kHz CCM Figure 3 Me...

Page 5: ...ROCEDURE Figure 4 Thermal Image of LTM4645 VIN 12V VOUT 1 0V ILOAD 25A Ambient Temperature 25 0 C No Forced Air Flow Downloaded from Arrow com Downloaded from Arrow com Downloaded from Arrow com Downl...

Page 6: ...SHAY WSL2010R0100FEA 17 1 R25 RES 2 2 1 10W 5 0603 VISHAY CRCW06032R2JNEA 18 1 R26 RES 50k 1 10W 1 0603 VISHAY CRCW060350K0FKEA 19 1 U1 IC LTM4645EY PBF BGA77 15 9 5 01 LINEAR TECH LTM4645EY PBF Addit...

Page 7: ...FOR USE WITH LINEAR TECHNOLOGY PARTS SCALE NONE www linear com 1 Monday February 27 2017 1 1 SINGLE OUTPUT HIGH EFFICIENCY STEP DOWN LT YL B LTM4645EY LTM4647EY DEMO CIRCUIT 2681A A B SIZE DATE IC NO...

Page 8: ...THER 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 cla...

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