5 J1 SS-6488-NF-K1 1 2 3 D OUT TO CABLE 6 4 TX+ 8 TX- C34 8.2PF RX+ T3 HPF2187L 1 7 2 12 C35 33PF RX- 4 6 5 C37 8.2PF 7 4 TCT C36 8.2PF TD- 2 TXCT 10 3 RD+ RXCT 9 4 RCT 8 5 C38 33PF 7 2 1 J2 TD+ 1 11 3 5 T4 HPX2126L 3 6 RDC29 8.2PF 1 1 2 2 3 3 4 4 48VIN TO 5V@3A, 3.3V@5A, AND [email protected] ISOLATED SUPPLY HIGH POWER PD (NON COMPLIANT TO IEEE802.3AF IF PD POWER EXCEEDS 12.95W) OUT TO PHY 5 5 6 6 HD2X3-079 8 5 RJ45 D COILCRAFT DO1813H-331MLB T1 PA1558NL 7 8 8 7 6 5 6 L1 0.33UH C4 1500PF,100V 0805 R3 100K PGND VIN- 4 3 2 1 C20 47UF 1210 12 4 Q4 Si4362DY R23 15K R24 100K ENDLY RCMP 15 PGDLY 4 Q8 Si3430DV 1 2 5 6 R20 3.01K 1% 14 R19 20K R25 2.1K 1% R26 150K C30 33PF C31 OPT E5 +C22 3.3V@5A 100UF,6.3V 3528 4 E8 D13 B0540W GND 1 SENSE+ 12 R16 0.015 1/8W 1206 SENSE- 11 SYNC C25 470PF OPT C21 47UF 1210 VC 9 Q6 FMMT718 3 2 SG R17 330 C26 3300PF C27 0.1UF 8 C32 0.1UF R27 10K Q7 FMMT618 2 3 T2 PA0184 5 B C24 1UF,25V 0805 R22 15 C28 2200PF D14 BAT54 C33 680PF 1 R15 47 0805 3 SG 1 U1 LT3825EFE 10 UVLO 5 3 8 FB GND R28 10K 4 1 E4 R12 402K 3 3 C12 0.01UF 50V D12 BAS21 1 3 VCC 2 R13 29.4K 1% TON 2 Q5 CMPT8599 1 R18 100K VIN- L3 0.33UH 2 R11 0 Q3 Si4488DY C COILCRAFT DO1813H-331MLB 3 2 1 R10 91 0805 [email protected] C10 22UF 16V 1210 E7 11 SG B R21 20K C19 0.1UF 1 PWRGD 6 VOUT 5 C18 22UF 16V 1210 D11 BAS21 1 3 NC 4 VIN C2 0.01UF 100V 9 1% D10 1N4148WT 1 2 GND 8 SIGDISA 7 GND 8 7 6 5 C17 1000PF 2KV 1808 1 NC 2 RCLASS 3 2 1 RCLASS 30.9 4 5 6 7 8 D8 C9 22UF 16V 1210 R8 10 1/4W 1206 Q2 Si4488DY 1 2 3 D9 U2 LTC4257CDD-1 4 R9 20K 1/4W 1206 GND D7 E3 C11 220PF,100V 0805 10 17 D6 CCMP C16 0.01UF 200V 0805 13 C15 0.01UF 200V 0805 PG 16 C14 0.01UF 200V 0805 SFST C13 0.01UF 200V 0805 3 1206 OSC R7 75 D4 E6 9 C7 OPT 6 R6 75 D5 SANYO 100MV12AX R2 OPT 1206 7 R5 75 D3 C6 2.2UF,100V 1812 12UF,100V 1 R4 75 D2 2 +C5 3 C R14 100K D1 SMAJ58A NC B2100 X 8 PLCS C8 0.1UF,100V 0805 +5.0V@3A 100UF,6.3V 3528 1 8 7 6 5 VIN+ 1 E2 2 VIN+ 37V-57V 4 L2 4.7UH E1 +C3 R1 10 1/4W 1206 Q1 Si4470EY COILTRONICS HCP0703-4R7-R C1 47UF 1210 E9 C23 4700PF 250V MURATA, GA343D A NOTES: UNLESS OTHERWISE SPECIFIED 1. ALL RESISTORS ARE IN OHMS, 0603. ALL CAPACITORS ARE 0603. CUSTOMER NOTICE CONTRACT NO. 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 CIRUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. APPROVALS THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. 5 4 3 2 DRAWN: CHECKED: APPROVED: ENGINEER: RYAN H. DESIGNER: TECHNOLOGY KIM T. 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 Fax: (408)434-0507 LTC Confidential-For Customer Use Only TITLE: SCHEMATIC HIGH-POWER MULTI-OUTPUT SUPPLY WITH POE CONTROLLER SIZE B DATE: DWG NO. DC959A-1 * LTC4257CDD-1/LT3825EFE Thursday, March 30, 2006 SHEET 1 REV A-1 1 OF 1 A