Linear Technology DC2125 Guía de configuración rápida

dc2125f

DEMO MANUAL DC2125

Description

LT4275, LT4321, LTM8027

Small Highly-Integrated Highly-Efficient

Non-Isolated PoE Powered Device

Demonstration circuit 2125 is a small, highly-integrated,

non-isolatedPoEPowered Device (PD) solution. Itfeatures

a PD Interface Controller (LT

4275), which interfaces with

a PoE Power Sourcing Equipment (PSE), an ideal diode

bridgecontroller(LT4321),whichminimizesbridgelosses,

and a DC/DC µModule

regulator (LT M

8027).

The DC2125 is initially configured as a 38.7W LTPoE++

™

PD that is capable of providing 12V and 3A at the output.

Users can configure the PD circuit to be an IEEE802.3

L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear

Technology Corporation. All other trademarks are the property of their respective owners.

performance summary

BoarD photos

compliant Type 2 (25.5W, “at”) or Type 1 (13W, “af”) PD

by changing the RCLASS and RCLASS++ resistors. See

the LT4275 data sheet for further information. The output

voltage of the LTM8027 can be easily configured for differ-

ent output voltages as shown in the LTM8027 data sheet.

Gerber files for this circuit board are available. Call

the LT C factory.

Specifications are at TA= 25°C

SYMBOL CONDITIONS UNITS

VPORT RJ-45 Port Voltage Range 37V to 57V

IOUT(MAX) Maximum Current from VOUT+to VOUT–3A

VOUT Output Voltage 12V (typ)

ΔVOUT(RIPPLE) Output Voltage Ripple at VPORT = 50V, IOUT = 3A 58mVpp (typ)

ΔVOUT(REG) Output Voltage Regulation, IOUT = 0A to 3A, VPORT ±0.031% (typ)

Efficiency Maximum Efficiency, VPORT = 41V, IOUT = 3A 90% (typ)

fSW Switching Frequency 300kHz (typ)

Top Side Bottom Side

dc2125f

DEMO MANUAL DC2125

typical performance characteristics

Figure 1. Thermal Pictures – VPORT = 50V, IOUT = 3A

Efficiency and Regulation

Top Side Bottom Side

dc2125f

DEMO MANUAL DC2125

Quick start proceDure

NOTE:HandletheDC2125printedcircuitboard bytheedges.

1. Refer to Figure 2 below to evaluate the DC2125 while

powering a 12V Load such as power resistors or an

electronic load.

2. Connect the positive terminal of the 12V Load to the

VOUT+turret, E1. Connect the negative terminal of the

12V Load to the VOUT–turret, E2. If using an electronic

load, power it on and turn the load current down to 0A.

3. Check the power delivery capability of the LTPoE++

PSE to ensure it can power the PD and the 12V Load.

Power-up the LTPoE++ PSE. NOTE: The DC1814A-A

LTPoE++ PSE demo board can power the DC2125 to

its full rated power.

4. Connect the output of the PSE to the input RJ45 connec-

tor, J1, of the DC2125 with a CAT5e or CAT6 Ethernet

cable ≤ 100 meters in length.

5. After connection has been established, verify that the

LED (D2) is lit. This indicates the PSE has successfully

detected and powered the PD.

6. The 12V Load can now be adjusted to exercise the

DC2125 over its full operating load range.

Figure 2. Setup Diagram for the DC2125 Using an LTPoE++ PSE and a Load

–

LTPoE++

PSE

EXAMPLE:

DC1814A-AE

CAT-5E

CAT-6

CABLE

12V

LOAD

DC2125 F01

dc2125f

DEMO MANUAL DC2125

parts list

QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER

Required Circuit Components

2 C1, C3 CAP., X7S, 0.047µF 100V, 10%, 0603 TDK, C1608X7S2A473K

1 C2 CAP., X7R, 47nF 100V, 10%, 0805 AVX, 08051C473KAT2A

1 C4 CAP., X7R, 22µF 16V, 20%, 1210 AVX, 1210YC226MAT2A

2 C5, C6 CAP., TQC, 68µF 16V, 7343 PANASONIC, 16TQC68MYF

1 C7 CAP., X7R, 0.1µF 50V, 10%, 0603 MURATA, GRM188R71H104KA93D

1 C8 CAP., ALUMINUM, 22µF 63V,C-CE-BS-6.3X7.7 SUN ELECT., 63CE22BS

1 C9 CAP., X7R, 2.2µF 100V, 1210 AVX, 12101C225KAT2A

1 C10 CAP., X7R, 1500pF 100V, 5%, 0603 AVX, 06031C152JAT2A

1 D1 DIODE, 600W TRANSIENT VOLTAGE SUPPRESSOR, SOD128 NXP, PTVS58VP1UP

1 J1 CONN., MAGJACK 1PORT 1000BASE-T WE, 7499511001

1 L1 IND, 10µH, DO1608C COILCRAFT, DO1608C-103MLB

9 Q1-Q9 MOSFET, N-CH, LFPAK33 NXP, PSMN075-100MSE

1 R2 RES., CHIP, 8.2Ω, 5%, 0603 VISHAY, CRCW06038R20JNEA

1 R3 RES., CHIP, 3.3k, 5%, 0603 VISHAY, CRCW06033K30JNEA

2 R4, R5 RES., CHIP, 100k, 5%, 0603 VISHAY, CRCW0603100KJNEA

1 R9 RES., CHIP, 34.8Ω, 1%, 0805 VISHAY, CRCW080534R8FKEA

1 R12 RES., CHIP, 56.2k, 1%, 0603 VISHAY, CRCW060356K2FKEA

1 R13 RES., CHIP, 49.9k, 1%, 0603 VISHAY, CRCW060349K9FKEA

1 U1 IC, LT4275AIDD#PBF, DFN10DD-3X3 LINEAR TECHNOLOGY CORPORATION, LT4275AIDD#PBF

1 U2 IC, LT4321IUF#PBF, QFN16UF-4X4 LINEAR TECHNOLOGY CORPORATION, LT4321IUF#PBF

1 U3 IC, µModule REGULATOR, LGA113-15X15X4.32 LINEAR TECHNOLOGY CORPORATION, LTM8027EV#PBF

Optional Circuit Components

1 CG1 CAP., X7R, 1000pF, 2KV, 10% 1808 TDK, C4520X7R3D102K

1 D2 LED, GREEN ROHM, SML-010FTT86L

1 J2 CONN., SS-7188S-A-NF STEWART CONNECTOR, SS-7188S-A-NF

4RT1-RT4 RES., CHIP, 75Ω, 5%, 0603 VISHAY, CRCW060375R0JNEA

3 R1, R6, R7 RES., CHIP, 0Ω, 5%, 0603 VISHAY, CRCW06030000Z0EA

0 R8 RES., 0805 OPT

1 R11 RES., CHIP, 2k, 5%, 0805 VISHAY, CRCW08052K00JNEA

2 R10, R14 RES., CHIP, 0Ω, 5%, 0402 VISHAY, CRCW04020000Z0ED

Hardware: For Demo Board Only

2 E1, E2 TP, TURRET, 0.094" MILL-MAX 2501-2-00-80-00-00-07-0

4 MH1-MH4 STANDOFF, NYLON, 0.5, 1/2" KEYSTONE, 8833 (SNAP ON)

dc2125f

DEMO MANUAL DC2125

Figure 3. DC2125 Demo Circuit Schematic, Sheet 1

schematic Diagram

D D

C C

B B

A A

1. ALL RESISTORS AND CAPACITORS ARE 0603.

2. ALL RESISTORS TOLERANCE RATING ARE 5%.

NOTE: UNLESS OTHERWISE SPECIFIED

37V-57V

IN FROM PSE,

OUT TO PHY

IN FROM

LTPoE++

OR PoE

PSE

RCLASS++

RCLASS

DATA1

DATA2

SPARE1

SPARE2

PWRGD

VPORTP

VPORTN

VIN

REVISION HISTORY

DESCRIPTION DATEAPPROVEDECO REV

RYAN H.2ND PROTOTYPE2 03-05-14

REVISION HISTORY

DESCRIPTION DATEAPPROVEDECO REV

RYAN H.2ND PROTOTYPE2 03-05-14

REVISION HISTORY

DESCRIPTION DATEAPPROVEDECO REV

RYAN H.2ND PROTOTYPE2 03-05-14

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 MADE A BEST EFFORT TO DESIGN A

CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;

HOWEVER, IT REMAINS THE 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 RELIABILITY. CONTACT LINEAR

TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.

THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND

SCHEMATIC

SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.

SCALE = NONE

www.linear.com

03/05/2014, 10:30 AM

SMALL-SIZED PoE PD WITH POWER SUPPLY uMODULE

KIM T.

RYAN H.

N/A

LT4275AIDD, LT4321IUF, LTM8027EV

DEMO CIRCUIT 2125A

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 MADE A BEST EFFORT TO DESIGN A

CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;

HOWEVER, IT REMAINS THE 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 RELIABILITY. CONTACT LINEAR

TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.

THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND

SCHEMATIC

SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.

SCALE = NONE

www.linear.com

03/05/2014, 10:30 AM

SMALL-SIZED PoE PD WITH POWER SUPPLY uMODULE

KIM T.

RYAN H.

N/A

LT4275AIDD, LT4321IUF, LTM8027EV

DEMO CIRCUIT 2125A

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 MADE A BEST EFFORT TO DESIGN A

CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;

HOWEVER, IT REMAINS THE 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 RELIABILITY. CONTACT LINEAR

TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.

THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND

SCHEMATIC

SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.

SCALE = NONE

www.linear.com

03/05/2014, 10:30 AM

SMALL-SIZED PoE PD WITH POWER SUPPLY uMODULE

KIM T.

RYAN H.

N/A

LT4275AIDD, LT4321IUF, LTM8027EV

DEMO CIRCUIT 2125A

PWRGDPWRGD

47nF

X7R

100V

0805

47nF

X7R

100V

0805

OPT

0805

OPT

0805

100k

4 X 12nF

4 X 75 Ohms

1nF 2kV

7499511001

4 X 12nF

4 X 75 Ohms

1nF 2kV

7499511001

TRD1+ 11

TRCT1 12

TRD1- 10

TRD2+ 4

TRCT2 6

TRD2- 5

TRD3+ 3

TRCT3 1

TRD3- 2

TRD4+ 8

TRCT4 7

TRD4- 9

VC2 14

VC1 13

VC3 15

VC4 16

SHIELD

20 SHIELD

0.047uF

100V

0.047uF

100V

PSMN075-100MSE

CG1

1000pF

2KV

1808

CG1

1000pF

2KV

1808

100k

RT3

3.3k

RT1

LT4275AIDD

IEEUVLO

AUX

RCLASS

RCLASS++

GND

5T2P 6

PWRGD 7

HSSRC 8

HSGATE 9

VPORT 10

GND

T2PT2P

34.8

0805

34.8

0805

8.2

PTVS58VP1UP

SOD128

PTVS58VP1UP

SOD128

2 1

RT4

SS-7188S-A-NF

910

RT2

dc2125f

DEMO MANUAL DC2125

schematic Diagram

Figure 4. DC2125 Demo Circuit Schematic, Sheet 2

D D

C C

B B

A A

TG36

DATA2

SPARE1

TG45

TG78

SPARE2

BG78

BG45

TG12

DATA1

BG12

BG36

VPORTN

VPORTP

TG12

BG12

TG36

BG36

TG45

BG45

TG78

BG78

PWRGD

DATA1 DATA2 SPARE1 SPARE2

VPORTP

VPORTN

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 MADE A BEST EFFORT TO DESIGN A

CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;

HOWEVER, IT REMAINS THE 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 RELIABILITY. CONTACT LINEAR

TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.

THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND

SCHEMATIC

SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.

SCALE = NONE

www.linear.com

03/05/2014, 10:30 AM

SMALL-SIZED PoE PD WITH POWER SUPPLY uMODULE

KIM T.

RYAN H.

N/A

LT4275AIDD, LT4321IUF, LTM8027EV

DEMO CIRCUIT 2125A

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 MADE A BEST EFFORT TO DESIGN A

CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;

HOWEVER, IT REMAINS THE 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 RELIABILITY. CONTACT LINEAR

TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.

THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND

SCHEMATIC

SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.

SCALE = NONE

www.linear.com

03/05/2014, 10:30 AM

SMALL-SIZED PoE PD WITH POWER SUPPLY uMODULE

KIM T.

RYAN H.

N/A

LT4275AIDD, LT4321IUF, LTM8027EV

DEMO CIRCUIT 2125A

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 MADE A BEST EFFORT TO DESIGN A

CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;

HOWEVER, IT REMAINS THE 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 RELIABILITY. CONTACT LINEAR

TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.

THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND

SCHEMATIC

SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.

SCALE = NONE

www.linear.com

03/05/2014, 10:30 AM

SMALL-SIZED PoE PD WITH POWER SUPPLY uMODULE

KIM T.

RYAN H.

N/A

LT4275AIDD, LT4321IUF, LTM8027EV

DEMO CIRCUIT 2125A

PSMN075-100MSE

1 6

PSMN075-100MSE

1 6

0.047uF

100V

0.047uF

100V

PSMN075-100MSE

1 6

PSMN075-100MSE

1 6

LT4321IUF

TG36

IN36

IN45

TG45

TG78

IN78

BG78

BG45

OUTP 12

EN 11

EN 10

OUTN 9

TG12 16

IN12 15

BG12 14

BG36 13

EP 17

PSMN075-100MSE

1 6

PSMN075-100MSE

1 6

VPORTPVPORTP

R10

0402

R10

0402

PSMN075-100MSE

1 6

PSMN075-100MSE

1 6

dc2125f

DEMO MANUAL DC2125

Information furnished by Linear Technology Corporation is believed to be accurate and reliable.

However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa-

tion that the interconnection of its circuits as described herein will not infringe on existing patent rights.

schematic Diagram

Figure 5. DC2125 Demo Circuit Schematic, Sheet 3

D D

C C

B B

A A

12V @ 3A

VOUT+

PWRGD

VPORTN

VIN

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 MADE A BEST EFFORT TO DESIGN A

CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;

HOWEVER, IT REMAINS THE 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 RELIABILITY. CONTACT LINEAR

TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.

THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND

SCHEMATIC

SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.

SCALE = NONE

www.linear.com

03/05/2014, 10:30 AM

SMALL-SIZED PoE PD WITH POWER SUPPLY uMODULE

KIM T.

RYAN H.

N/A

LT4275AIDD, LT4321IUF, LTM8027EV

DEMO CIRCUIT 2125A

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 MADE A BEST EFFORT TO DESIGN A

CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;

HOWEVER, IT REMAINS THE 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 RELIABILITY. CONTACT LINEAR

TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.

THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND

SCHEMATIC

SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.

SCALE = NONE

www.linear.com

03/05/2014, 10:30 AM

SMALL-SIZED PoE PD WITH POWER SUPPLY uMODULE

KIM T.

RYAN H.

N/A

LT4275AIDD, LT4321IUF, LTM8027EV

DEMO CIRCUIT 2125A

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 MADE A BEST EFFORT TO DESIGN A

CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;

HOWEVER, IT REMAINS THE 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 RELIABILITY. CONTACT LINEAR

TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.

THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND

SCHEMATIC

SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.

SCALE = NONE

www.linear.com

03/05/2014, 10:30 AM

SMALL-SIZED PoE PD WITH POWER SUPPLY uMODULE

KIM T.

RYAN H.

N/A

LT4275AIDD, LT4321IUF, LTM8027EV

DEMO CIRCUIT 2125A

68uF

16V

7343

68uF

16V

7343

C10

1500pF

C10

1500pF

22uF

63V

22uF

63V

LTM8027EV

VIN

GND

VOUT E9

BIAS1 A6

GND

A10

GND

A11

GND

B10

GND

B11

GND

C10

GND

C11

GND

D10

GND

D11

GND

GND F1

GND F2

GND F3

GND F4

GND F5

GND F6

GND F7

GND F8

GND G5

GND G6

GND G7

GND G8

GND H5

GND H6

GND H7

GND H8

GND J5

GND J6

GND J7

GND J8

GND K5

GND K6

GND K7

GND K8

GND L5

GND L6

GND L7

GND L8

AUX A7

VOUT E10

VOUT E11

VOUT F9

VOUT F10

VOUT F11

VOUT G9

VOUT G10

VOUT G11

VOUT H9

VOUT H10

VOUT H11

VOUT J9

VOUT J10

VOUT J11

VOUT K9

VOUT K10

VOUT K11

VOUT L9

VOUT L10

VOUT L11

VIN

H2 VIN

H3 VIN

J1 VIN

J2 VIN

J3 VIN

K1 VIN

K2 VIN

K3 VIN

L1 VIN

L2 VIN

RUN

SYNC

BIAS2

ADJ

GND

2.2uF

100V

1210

2.2uF

100V

1210

R11

0805

R11

0805

GREEN

2 1

R12

56.2k

R12

56.2k

0.1uF

50V

0.1uF

50V

VOUT-

22uF

16V

1210

22uF

16V

1210

VINVIN L1

10uH

68uF

16V

7343

68uF

16V

7343

VOUT+

R14

0402

R14

0402

R13

49.9k 1%

R13

49.9k 1%

dc2125f

DEMO MANUAL DC2125

Linear Technology Corporation

1630 McCarthy Blvd., Milpitas, CA 95035-7417

(408) 432-1900 ●FAX: (408) 434-0507 ●www.linear.com

 LINEAR TECHNOLOGY CORPORATION 2014

LT 0614 • PRINTED IN USA

DEMONSTRATION BOARD IMPORTANT NOTICE

Linear Technology Corporation (LT C ) 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 LT C 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 LT C 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. LT C assumes no liability for applications assistance,

customer product design, software performance, or infringement of patents or any other intellectual property rights of any kind.

LT C 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 LT C applica-

tion engineer.

Mailing Address:

Linear Technology

1630 McCarthy Blvd.

Milpitas, CA 95035

X-ON Electronics

Largest Supplier of Electrical and Electronic Components

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