Linear Technology 1814A Demo Manual Download Page 5 | Manualshive

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dc1814afe

DEMO MANUAL

DC1814A

U1

LTC4274AIUHF

AGND

SENSE

GA

TE

OUT

VEE

VEE

VEE

VEE

VEE

VEE

VDD

VEE

C1

0.1µF

D23

5.6V

Q2

CMPTA92

R5

100k

R10

1Ω

10Ω

0805

DGND

DGND

DGND

DGND

13

10

15

16

17

C

BULK

VEE

TVS

BULK

C4

1µF

100V

OUT

VEE

DC1814A F05

C5

0.22µF

100V

Q1

FDMC86102

RS1

0.25Ω

CSRN2512FKR250

D3

SMAJ58A

18

22

19

25 26 27 39

30

31

32

D4

S1B

D5

S1B

D1

3.9V

MMSZ4686T1

R11

1k

1/4W

Figure 5. High Surge Environment Recommended LTC4274A Protection

suppLy VoLtages

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Summary of Contents for 1814A

Page 1: ...inear logo are registered trademarks of Linear Technology Corporation All other trademarks are the property of their respective owners The LTC4274A is configured in the DC1814A as an AUTO pinhigh MIDp...

Page 2: ...below 1 Connect a 55V to 57V power supply across AGND and VEE Size the power supply considering the maximum power delivered to the PD 2 Connectan802 3Type1orType2 orLTPoE compat ible PD to RJ45 conne...

Page 3: ...ent readings ThesenseresistorusedwiththeLTC4274Amust be 0 25 1 or better and with a power rating that can handle the maximum DC current passed through it A dedicatedsensetracefromtheSENSEpinoftheLTC42...

Page 4: ...thernet ports can be subject to significant cable surge events TokeepPoEvoltagesbelowasafelevelandprotect the application against damage protection components are required at the main supply at the LT...

Page 5: ...VEE TVSBULK C4 1 F 100V OUT VEE DC1814A F05 C5 0 22 F 100V Q1 FDMC86102 RS1 0 25 CSRN2512FKR250 D3 SMAJ58A 18 22 19 25 26 27 39 30 31 32 D4 S1B D5 S1B D1 3 9V MMSZ4686T1 R11 1k 1 4W Figure 5 High Surg...

Page 6: ...1 Top Layer Top Silkscreen Layer 2 VIN 1 Layer 3 VIN 2 Layer 4 Bottom Layer Bottom Silkscreen Downloaded from Arrow com Downloaded from Arrow com Downloaded from Arrow com Downloaded from Arrow com Do...

Page 7: ...1 RS1 RES 2512 0 25 1 2W STACKPOLE CSRN2512FKR250 22 4 MH1 MH4 STAND OFF NYLON 0 75 KEYSTONE 8834 SNAP ON 23 2 SW1 SW2 SWITCH MOMENTARY PUSHBUTTON W RTH 434 123 050 816 24 1 Q1 XSTR MOSFET N CHANNEL...

Page 8: ...HE CUSTOMER S RESPONSIBILITY TO VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR R...

Page 9: ...Corporation makes no representa tion that the interconnection of its circuits as described herein will not infringe on existing patent rights Assembly Drawing Downloaded from Arrow com Downloaded fro...

Page 10: ...Y 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...

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