5 4 3 2 1 REVISION HISTORY ECO REV 2 KEY-575 V_LED R12-R15 3.9k 1206 MSD RESET 1 OUT4 RE4 10M V_LED V_LED V_LED RL4 1.5k V_LED J5 R3 OPT C14 0.1uF 2 1 3 4 5 6 5 6 7 8 7 8 9 10 9 10 11 12 11 12 13 14 13 14 Q10 Si2343CDS OUT11 1 RE11 10M V_LED 1 Q11 Si2343CDS OUT12 2 1 RE12 10M R4 OPT C13 0.1uF REP2 5.1k R6 5.1k 8 7 5 Q12 Si2343CDS V_LED C6 1000pF,2KV 1808 C7 1000pF,2KV 1808 C8 1000pF,2KV 1808 C9 1000pF,2KV 1808 WP WP A1 SCL A2 SDA VSS TP1 3 13 18 3 19 20 E12 21 OUT5 OUT6 22 23 E13 24 25 26 E14 27 OUT7 OUT8 28 E16 29 E15 30 31 E17 32 E2 33 OUT11 OUT12 1 2 34 E1 3 4 VEE 1 2 3 4 5 6 7 8 9 10 C 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 B 28 29 30 31 32 33 34 SAMTEC MMS-134-02-T-SV NOTE: UNLESS OTHERWISE SPECIFIED EEGND 1. ALL RESISTORS AND CAPACITORS ARE 0603. 2. INSTALL SHUNTS AS SHOWN. CUSTOMER NOTICE 2 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 www.linear.com Fax: (408)434-0507 LTC Confidential-For Customer Use Only APPROVALS LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO PCB DES. VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION. COMPONENT SUBSTITUTION AND PRINTED APP ENG. 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 SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. 4 12 17 E8 OUT9 OUT10 A0 10 15 E11 HD2X7-079-MOLEX VCC 9 11 OUT3 OUT4 TECHNOLOGY KIM T. DILIAN R. TITLE: SCHEMATIC 12-PORT IEEE802.3at PSE MOTHER BOARD SIZE 5 8 16 I2C EXPANSION 24LC025-I/ST 6 RL12 1.5k 7 14 E9 U4 PORT12 LED12 GREEN 5 OUT1 OUT2 C2 0.1uF 2 RD12 2M 2 4 RL8 1.5k 2 RL11 1.5k J6 3 REP1 5.1k 3 1 1 RD11 2M 2 RL10 1.5k PORT11 LED11 GREEN 4 E5 VDD33 HD2X7-079-MOLEX V_LED 2 1 PORT10 LED10 GREEN RE8 10M 2 1 1 Q8 Si2343CDS 3 (NC) PORT4 LED4 GREEN PORT8 LED8 GREEN 2 INT# RESET# VDD33 3 2 V_LED 2 V_LED 1 RE10 10M OUT8 3 OUT7 RE7 10M 1 SCL SDAIN SW2 MSD E10 E6 E7 Q4 Si2343CDS 1 Q7 Si2343CDS 3 3 OUT9 Q9 Si2343CDS OUT10 RD8 2M 2 2 RD10 2M 2 RL9 1.5k RL7 1.5k J1 (SDAOUT) V_LED PORT7 LED7 GREEN 1 Q6 Si2343CDS 3 RE6 10M PORT9 LED9 GREEN 1 RE9 10M RD7 2M 2 2 RD9 2M A 1 2 3 Q5 Si2343CDS OUT6 V_LED 1 OUT5 RE5 10M RL6 1.5k 3 1 PORT6 LED6 GREEN 2 RD6 2M 1 1 1 2 RL5 1.5k 2 RD5 2M PORT5 LED5 GREEN 1 AD2 AD3 AD6 6 TO DC590 B 2 1 2 6 E4 3 OUT3 RE3 10M 1 Q3 Si2343CDS 5 HI 3 MSD# VDD33 SW1 RESET 2 RD4 2M ADDRESS 4 E3 2 2 1 Q2 Si2343CDS 3 OUT2 1 RE2 10M RL3 1.5k LO D SW3 219-3MST INT SCL SDA 2 2 RD3 2M 2 Q1 Si2343CDS 3 OUT1 RE1 10M RL2 1.5k 3 1 1 1 1 2 2 RD2 2M VDD33 LED13 GREEN ON 3 R8-R11 3.9k 1206 PORT3 LED3 GREEN INT LED14 RED DGND E23 E24 E25 E26 R16 R17 OPT OPT Q14 ZXTP19100CGTA 09-04-15 E20 R1 470 0805 2 4 R21 1k 1 0805 OPTIONAL PORT LED DRIVERS RL1 1.5k R2 470 0805 C12 1uF DGND C RD1 2M D31 DDZ9688 C11 1uF E19 Q13 ZXTP19100CGTA R5 100k 0805 PORT2 LED2 GREEN C5 10uF 0805 1 R19 0 2 VEE PORT1 LED1 GREEN C4 0.01uF 2 BYP 4 AGND 1 GND 5 V_LED E27 VEE 10A, 0154010 LITTELFUSE SHDN C3 1uF 1 0805 R7 20k 1206 F2 NEG VEE LED15 ORANGE 3 OUT DATE DILIAN R. 2MM, 34 PIN CONNECTOR J8 D5 1.5SMC62A + 2 MOLEX-50-84-1020 C1 47uF,100V R20 1k R23 OPT 0805 IN APPROVED DIGITAL CONNECTIONS VDD33 E18 VDD33 3 1 1 2 1 D4 1.5SMC62A D1 MMSZ4691T1G 1 R18 0 2 4 C10 1uF,100V 1210 2 MAIN SUPPLY IN LT1761ES5-3.3 2 1 D3 S5BC J2 OPT R22 OPT 0805 1 D2 S5BC 2 2 D 10A, 0154010 LITTELFUSE 2 KEY-575 U5 POLARITY PROTECTION DIODE, TVS, FUSES TO BE INCLUDED 1 F1 2 J7 1 POS 51V - 57V ANALOG CONNECTIONS AGND E22 DESCRIPTION REBUILD WITH CHANGE N/A SCALE = NONE DATE: IC NO. REV. DEMO CIRCUIT 1680B Friday, September 04, 2015 1 SHEET 2 1 OF 4 A 5 4 3 2 1 UPPER ROW RP2 RQ2 J3B SS-73100-046F RR2 15 11 14 9 16 75 7 18 8 17 6 19 75 4 21 5 20 3 22 75 1 24 2 23 CA2 1000pF 2kV 1808 RW2 RX2 RY2 RZ2 75 75 75 75 111 112 1 113 2 114 3 4 115 116 5 117 6 118 7 8 CX2 0.01uF 100V 0805 CY2 0.01uF 100V 0805 D J4L RO4 31 1 32 2 33 3 34 4 35 5 36 6 37 7 38 8 RQ4 SS-73100-046F CB2 1000pF 2kV 1808 DP2 S1B RP4 J3D SS-73100-046F CZ2 0.01uF 100V 0805 WE, 749022017 OUT2 PORT 2 CW2 0.01uF 100V 0805 RR4 12 13 75 10 15 11 14 9 16 75 7 18 8 17 6 19 75 4 21 5 20 3 22 75 1 24 2 23 CA4 1000pF 2kV 1808 B RQ1 J3A SS-73100-046F RR1 CA1 1000pF 2kV 1808 14 9 16 75 7 18 8 17 6 19 75 4 21 5 20 3 22 75 1 24 2 23 RW1 RX1 RY1 RZ1 75 75 75 75 PORT 1 CW1 0.01uF 100V 0805 101 102 1 103 2 104 3 4 105 106 5 107 6 108 7 8 CX1 0.01uF 100V 0805 CY1 0.01uF 100V 0805 J4K CZ1 0.01uF 100V 0805 DP1 S1B SHIELD 21 1 22 2 23 3 24 4 25 5 26 6 27 7 28 8 RP3 RQ3 SS-73100-046F RR3 CA3 1000pF 2kV 1808 121 122 123 124 125 126 127 128 129 121 122 123 124 125 126 127 128 129 J3M 1 2 3 4 5 6 7 8 9 13 75 10 15 11 14 9 16 75 7 18 8 17 6 19 75 4 21 5 20 3 22 75 1 24 2 23 RY4 75 CY4 0.01uF 100V 0805 75 91 92 1 93 2 94 3 4 95 96 5 97 6 98 7 8 D J4J SS-73100-046F CZ4 0.01uF 100V 0805 CB4 1000pF 2kV 1808 C SS-73100-046F DATA/PoE OUT 75 CW3 0.01uF 100V 0805 RX3 75 CX3 0.01uF 100V 0805 RY3 75 CY3 0.01uF 100V 0805 75 OUT3 81 82 1 83 2 84 3 4 85 86 5 87 6 88 7 8 J4I B SS-73100-046F CB3 1000pF 2kV 1808 DN3 S1B VEE TECHNOLOGY KIM T. DILIAN R. TITLE: SCHEMATIC 12-PORT IEEE802.3at PSE MOTHER BOARD SIZE THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. 2 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 www.linear.com Fax: (408)434-0507 LTC Confidential-For Customer Use Only APPROVALS LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO PCB DES. VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION. COMPONENT SUBSTITUTION AND PRINTED APP ENG. CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. 3 PORT 3 CZ3 0.01uF 100V 0805 DP3 S1B SS-73100-046F 4 RW3 RZ3 WE, 749022017 CUSTOMER NOTICE J4M 5 CX4 0.01uF 100V 0805 DP4 S1B 12 LOWER ROW VEE 1 2 3 4 5 6 7 8 9 RO3 J3C SS-73100-046F DN1 S1B A C CB1 1000pF 2kV 1808 WE, 749022017 OUT1 75 T3 DATA IN RJ45 RP1 15 11 DATA/PoE OUT RJ45 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 75 10 RX4 PORT 4 VEE SHIELD RJ45 A RO1 13 CW4 0.01uF 100V 0805 DN4 S1B T1 12 75 RZ4 OUT4 VEE DATA IN RW4 WE, 749022017 DN2 S1B C DATA/PoE OUT RJ45 11 1 12 2 13 3 14 4 15 5 16 6 17 7 18 8 75 10 RJ45 RJ45 RO2 13 T4 DATA IN RJ45 B D 12 DATA/PoE OUT RJ45 T2 DATA IN N/A SCALE = NONE DATE: IC NO. REV. DEMO CIRCUIT 1680B Friday, September 04, 2015 1 SHEET 2 2 OF 4 A 5 4 3 2 1 UPPER ROW RQ6 J3F SS-73100-046F RR6 15 11 14 9 16 75 7 18 8 17 6 19 75 4 21 5 20 3 22 75 1 24 2 23 CA6 1000pF 2kV 1808 RW6 RX6 RY6 RZ6 75 75 75 75 71 72 1 73 2 74 3 4 75 76 5 77 6 78 7 8 CX6 0.01uF 100V 0805 CY6 0.01uF 100V 0805 H J4H RO8 71 1 72 2 73 3 74 4 75 5 76 6 77 7 78 8 RQ8 SS-73100-046F RR8 13 75 10 15 11 14 9 16 75 7 18 8 17 6 19 75 4 21 5 20 3 22 75 1 24 2 23 CA8 1000pF 2kV 1808 CB6 1000pF 2kV 1808 DP6 S1B RP8 J3H SS-73100-046F CZ6 0.01uF 100V 0805 WE, 749022017 OUT6 PORT 6 CW6 0.01uF 100V 0805 12 41 1 42 2 43 3 44 4 45 5 46 6 47 7 48 8 RP5 RQ5 J3E SS-73100-046F RR5 CA5 1000pF 2kV 1808 75 10 15 11 14 9 16 75 7 18 8 17 6 19 75 4 21 5 20 3 22 75 1 24 2 23 DATA/PoE OUT RW5 RX5 RY5 RZ5 75 75 75 75 PORT 5 CW5 0.01uF 100V 0805 61 62 1 63 2 64 3 4 65 66 5 67 6 68 7 8 CX5 0.01uF 100V 0805 CY5 0.01uF 100V 0805 G J4G 61 1 62 2 63 3 64 4 65 5 66 6 67 7 68 8 DP5 S1B RP7 RQ7 J3G SS-73100-046F CZ5 0.01uF 100V 0805 RO7 SS-73100-046F CB5 1000pF 2kV 1808 WE, 749022017 OUT5 75 CX8 0.01uF 100V 0805 RY8 75 CY8 0.01uF 100V 0805 RZ8 75 CZ8 0.01uF 100V 0805 RR7 CA7 1000pF 2kV 1808 12 13 75 10 15 11 14 9 16 75 7 18 8 17 6 19 75 4 21 5 20 3 22 75 1 24 2 23 J4F SS-73100-046F CB8 1000pF 2kV 1808 C DATA/PoE OUT RW7 75 CW7 0.01uF 100V 0805 RX7 75 RY7 75 RZ7 75 41 42 1 43 2 44 3 4 45 46 5 47 6 48 7 8 CY7 0.01uF 100V 0805 B J4E SS-73100-046F CZ7 0.01uF 100V 0805 CB7 1000pF 2kV 1808 DP7 S1B OUT7 PORT 7 CX7 0.01uF 100V 0805 WE, 749022017 DN7 S1B DN5 S1B VEE VEE LOWER ROW CUSTOMER NOTICE A TECHNOLOGY KIM T. DILIAN R. TITLE: SCHEMATIC 12-PORT IEEE802.3at PSE MOTHER BOARD SIZE THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. 4 3 2 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 www.linear.com Fax: (408)434-0507 LTC Confidential-For Customer Use Only APPROVALS LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO PCB DES. VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION. COMPONENT SUBSTITUTION AND PRINTED APP ENG. CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. 5 51 52 1 53 2 54 3 4 55 56 5 57 6 58 7 8 T7 DATA IN RJ45 RO5 RX8 PORT 8 VEE RJ45 B RJ45 E 13 CW8 0.01uF 100V 0805 DN8 S1B T5 12 75 DP8 S1B OUT8 VEE DATA IN D RW8 WE, 749022017 DN6 S1B C DATA/PoE OUT RJ45 RP6 75 10 RJ45 51 1 52 2 53 3 54 4 55 5 56 6 57 7 58 8 13 T8 DATA IN RJ45 RJ45 F RO6 12 DATA/PoE OUT RJ45 T6 DATA IN D N/A SCALE = NONE DATE: IC NO. REV. DEMO CIRCUIT 1680B Friday, September 04, 2015 1 SHEET 2 3 OF 4 A 5 4 3 2 1 UPPER ROW RQ10 J3J SS-73100-046F RR10 15 11 14 9 16 75 7 18 8 17 6 19 75 4 21 5 20 3 22 75 1 24 2 23 CA10 1000pF 2kV 1808 RW10 RX10 RY10 RZ10 31 32 1 33 2 34 3 4 35 36 5 37 6 38 7 8 75 CX10 0.01uF 100V 0805 75 CY10 0.01uF 100V 0805 L J4D RO12 111 1 112 2 113 3 114 4 115 5 116 6 117 7 118 8 RQ12 SS-73100-046F RR12 13 75 10 15 11 14 9 16 75 7 18 8 17 6 19 75 4 21 5 20 3 22 75 1 24 2 23 CA12 1000pF 2kV 1808 CB10 1000pF 2kV 1808 DP10 S1B RP12 J3L SS-73100-046F 75 CZ10 0.01uF 100V 0805 WE, 749022017 OUT10 PORT 10 75 CW10 0.01uF 100V 0805 12 B 81 1 82 2 83 3 84 4 85 5 86 6 87 7 88 8 RP9 RQ9 J3I SS-73100-046F RR9 CA9 1000pF 2kV 1808 75 10 15 11 14 9 16 75 7 18 8 17 6 19 75 4 21 5 20 3 22 75 1 24 2 23 DATA/PoE OUT RW9 RX9 RY9 RZ9 75 75 75 75 PORT 9 CW9 0.01uF 100V 0805 21 22 1 23 2 24 3 4 25 26 5 27 6 28 7 8 CX9 0.01uF 100V 0805 CY9 0.01uF 100V 0805 K J4C 101 1 102 2 103 3 104 4 105 5 106 6 107 7 108 8 DP9 S1B RP11 RQ11 J3K SS-73100-046F CZ9 0.01uF 100V 0805 RO11 SS-73100-046F RR11 CA11 1000pF 2kV 1808 CB9 1000pF 2kV 1808 WE, 749022017 OUT9 RY12 75 CY12 0.01uF 100V 0805 RZ12 75 CZ12 0.01uF 100V 0805 12 13 75 10 15 11 14 9 16 75 7 18 8 17 6 19 75 4 21 5 20 3 22 75 1 24 2 23 J4B SS-73100-046F C DATA/PoE OUT RW11 75 CW11 0.01uF 100V 0805 RX11 75 CX11 0.01uF 100V 0805 RY11 75 CY11 0.01uF 100V 0805 RZ11 1 2 1 3 2 4 3 4 5 6 5 7 6 8 7 8 B J4A SS-73100-046F CB11 1000pF 2kV 1808 DP11 S1B OUT11 PORT 11 75 CZ11 0.01uF 100V 0805 WE, 749022017 DN11 S1B DN9 S1B VEE VEE LOWER ROW CUSTOMER NOTICE A TECHNOLOGY KIM T. DILIAN R. TITLE: SCHEMATIC 12-PORT IEEE802.3at PSE MOTHER BOARD SIZE THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. 4 3 2 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 www.linear.com Fax: (408)434-0507 LTC Confidential-For Customer Use Only APPROVALS LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO PCB DES. VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION. COMPONENT SUBSTITUTION AND PRINTED APP ENG. CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. 5 11 12 1 13 2 14 3 4 15 16 5 17 6 18 7 8 CB12 1000pF 2kV 1808 T11 DATA IN RJ45 RO9 75 CX12 0.01uF 100V 0805 VEE RJ45 RJ45 I 13 RX12 PORT 12 DN12 S1B T9 12 75 CW12 0.01uF 100V 0805 DP12 S1B OUT12 VEE DATA IN D RW12 WE, 749022017 DN10 S1B C DATA/PoE OUT RJ45 RP10 75 10 RJ45 91 1 92 2 93 3 94 4 95 5 96 6 97 7 98 8 13 T12 DATA IN RJ45 RJ45 J RO10 12 DATA/PoE OUT RJ45 T10 DATA IN D N/A SCALE = NONE DATE: IC NO. REV. DEMO CIRCUIT 1680B Friday, September 04, 2015 1 SHEET 2 4 OF 4 A 5 4 3 2 1 REVISION HISTORY ECO VDD33 2 23 GP0 GP1 24 MSD 14 22 1 MID SCL SDAIN SDAOUT INT# RESET# 2 TX+ TD+ 1 CT 2 47 DNA GATE12 Q1 PSMN075 RB1-RB4 DESCRIPTION REBUILD WITH CHANGE APPROVED DATE DILIAN R. 05-28-15 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 D REQUIRED S1B DIODE PROTECTION SHOWN ON MOTHER BOARD. See NOTE 3 S1B OUTn S1B SAMTEC, TMM134-01-T-S-RA VEE C1 0.22uF X7R 0805 100V G1 NOTE 1 4 X 1.00 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 OUT12 OUT12 38 SENSE12 VEE G12 39 GATE11 OUT11 S12 40 OUT11 35 SENSE11 G11 36 OUT10 S11 37 GATE10 G10 32 SENSE10 S10 33 OUT9 OUT9 28 GATE9 OUT8 SENSE9 G9 29 S9 30 GATE8 OUT8 26 G8 25 OUT7 SENSE8 S8 24 GATE7 OUT7 23 OUT6 SENSE7 G7 22 S7 21 G6 19 OUT6 20 GATE6 SENSE6 S6 18 OUT5 17 OUT5 GATE5 SENSE5 G5 16 S5 15 OUT4 OUT4 13 GATE4 G4 12 OUT3 OUT11 OUT12 U2 LTC4270 SENSE4 S4 11 9 OUT3 10 8 S3 G3 GATE3 SENSE3 6 OUT2 OUT2 GATE2 5 SENSE2 4 G2 OUT1 3 OUT1 CNA DPA 48 49 50 GATE1 NOTE 2 OUT9 OUT10 1 RA1-RA4 VEE OUT7 OUT8 100 OUT10 31 D26 B1100 SENSE1 CPA C26 0.1uF 2KV 1808 VEE 100 S2 BZT52C5V6-7-F 2 D1 SMAJ58A 1 2 C19 1uF 100V 1206 D31 OPT 1 C25 0.1uF 27 XIO1 14 XIO0 7 CAP2 34 AGND G1 10 0805 C VEE S1 R35 R23 100 OUT5 OUT6 C24 2.2nF R24 100 OUT3 OUT4 16 15 CT(2) RX+ RD+ 5 N/C 4 N/C 3 TD- 6 7 8 R21 R34 OPT 12k 1206 1/2W C22 1uF 100 12 N/C 13 N/C 14 TX- 11 10 R15 100 R16 R22 R33 220k R27 OPT OUT1 OUT2 100 CT(3)CT(4) WURTH 7490100143 4 1 9 RX- T1 J2-9 J2-10 R26 OPT R13 100 VEE VEE XIO1 XIO0 D5 GRN XIO0 Q13B BC846AS 5 R32 220k C23 1uF 41 VEE 51 VEE 52 VEE 42 NC 43 NC 44 NC 45 NC 46 NC 53 VSSK Q13A 2 BC846AS R31 27k 0805 RD- 2 D4 GRN XIO1 3 1 2 6 1 R30 27k 0805 AD2 AD3 AD6 MSD# VDD33 GP1 GP0 J2-5 J2-6 VDD33 R14 1 J1 D3 GRN GP0 1 2 3 1 AUTO 6 MID J2-4 U1 LTC4271 DND D2 GRN GP1 1 HI LO 2 21 AUTO J2-3 15 18 SCL SDAIN SDAOUT 2 RESET# MSD# 11 DPD 10 HI LO R29 560 2mm, 34 Pin Connector 9 CPD CND D 8 17 16 5 AD6 3 4 AD3 AD2 2 AD0 1 AD2 AD3 AD6 R28 560 JP2 MID RESET SDAOUT SDAIN SCL INT# INT J2-2 AD1 25 DGND 19 20 VDD33 12 VDD33 C21 0.1uF CAP1 DNC NC 7 13 C20 1uF R8 R9 0 0 JP1 AUTO R7 0 AD0 3 AD1 J2-1 REV __ C2 0.22uF X7R 0805 100V C3 0.22uF X7R 0805 100V C4 0.22uF X7R 0805 100V C5 0.22uF X7R 0805 100V C6 0.22uF X7R 0805 100V C7 0.22uF X7R 0805 100V C8 0.22uF X7R 0805 100V C9 0.22uF X7R 0805 100V C10 0.22uF X7R 0805 100V C11 0.22uF X7R 0805 100V C12 0.22uF X7R 0805 100V C OUT1 G2 Q2 OUT2 4 X 1.00 PSMN075 RC1-RC4 G3 Q3 OUT3 4 X 1.00 REQUIRED SURGE COMPONENTS (BULK 58V TVS and BULK CAPACITANCE) ON MOTHER BOARD. PSMN075 RD1-RD4 G4 Q4 OUT4 PSMN075 RE1-RE4 4 X 1.00 G5 Q5 OUT5 4 X 1.00 PSMN075 RF1-RF4 B G6 B Q6 OUT6 4 X 1.00 PSMN075 RG1-RG4 G7 Q7 OUT7 4 X 1.00 VEE PSMN075 RH1-RH5 G8 Q8 OUT8 4 X 1.00 PSMN075 RI1-RI5 G9 Q9 OUT9 4 X 1.00 PSMN075 RJ1-RJ5 G10 Q10 4 X 1.00 OUT10 PSMN075 RK1-RK5 G11 Q11 4 X 1.00 PSMN075 RL1-RL5 NOTE: UNLESS OTHERWISE SPECIFIED A OUT11 G12 Q12 4 X 1.00 1, ALL SENSE RESISTORS TIE TO VEE AT ONE COMMON POINT. 2, VSSK CONNECTS TO THE COMMON SENSE RESISTOR VEE POINT THROUGH AN ISOLATED KELVIN SENSE TRACE. 3, ONE S1B PROTECTION DIODE FROM VEE TO OUTn AND ONE S1B PROTECTION DIODE FROM OUTn TO AGND SHOWN ON MOTHER BOARD. 4, ALL RESISTORS ARE IN 0603. ALL CAPACITORS ARE IN 0603. OUT12 PSMN075 A CUSTOMER NOTICE THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. 5 APPROVALS LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO PCB DES. VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APP ENG. APPLICATION. COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. 4 3 2 TECHNOLOGY KIM T. DILIAN R. TITLE: SCHEMATIC 12-PORT PSE DAUGHTER CARD WITH DIGITAL ISOLATION SIZE IC NO. N/A SCALE = NONE 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 www.linear.com Fax: (408)434-0507 LTC Confidential-For Customer Use Only DATE: LTC4270BIUKG, LTC4271IUF DEMO CIRCUIT 1682B 05/28/2015, 11:48 AM 1 SHEET 1 REV. 1 OF 1