1 2 3 4 5 REVISION HISTORY ECO REV __ 3 DESCRIPTION PRODUCTION APPROVED DATE VLADIMIR O. 04-12-13 E28 J5 HOTSWAP CHANNEL 2 VCC2 R22 0.01 1 VCC2 +5V E32 R25 10 E29 D15 LN1351C GREEN C9 0.1uF 50V R23 OPT R24 0 D13 CMHZ4690 R28 OPT R29 23.2k 2 GND R19 30.1k A 2512 Z2 SMCJ33A SMC Q4 OPT A A A R20 1.8k 2 R3 30.1k VCC1 11 2 9 OUT2 E7 15 FAULT1 E6 5 FTMR1 E4 1 FTMR2 FAULT2 FAULT1 FTMR1 D7 TLMS1001-GS08 RED 2 4 R6 5.6k C6 47nF D5 CMHZ4683 A A E30 HOTSWAP CHANNEL 1 R2 0.005 D3 LN1351C GREEN C2 0.1uF 50V R4 OPT R5 46.4k C1 10uF 50V 1210 J2 A R10 23.2k 2 R7 10 1 R8 3.3k Q2 OPT Z1 SMCJ33A SMC OUT1D R17 10 A A A COUT1 10uF 50V 1210 OUT1 9A MAX OUT1D J4 OPT C3 0.047uF E31 C4 OPT A R1 1k 0805 OPT R9 10 R11 10 OPT A R12 10k J3 OUT1 2 A C Q1 FDMS86500DC 2512 1 VCC1 E27 FAULT2 2 A 1 E25 GND 14 1 2 R13 2.4M D2 CMHZ4701 J1 3 D4 1N4448HWT 2 1 2 D6 1N4448HWT ON1 ON1 FTMR1 1 R14 OPT E3 FAULT1 ON1 E8 1 DCLA 16 ON1 D10 1N4448HWT FTMR2 B FTMR2 8 FAULT2 CLS 1 DCLA 7 GND VCC1 2 CLS R15 0 E26 A * GND D9 TLMS1001-GS08 RED 1 6 ON2 U1 OUT1 A 10 12 JP2 HD1X3-079 CLS CLS +12V 13 17 E5 C A GATE2 A GATE1 JP1 HD1X4-079 A SENSE2 R16 0 SENSE1 OVBLK 3 BOTH 2 1 SEP. VCC2 1 2 3 4 C7 82nF GND C11 OPT 1 B CLS D12 CMHZ4683 2 1.5X 2X 3X R18 2.4M OUT2D E33 D8 1N4448HWT 2 1 ON2 A J8 C10 OPT A E11 COUT2 10uF 50V 1210 OPT C12 0.047uF R31 10k R21 1k 0805 OPT R27 10 R30 10 OPT A A ON2 OUT2D R38 10 A A 2 A C8 10uF 50V 1210 OUT2 4.5A MAX J7 OUT2 2 R26 1k 1 J6 1 A Q3 FDMS86500DC GND A C5 OPT A CUSTOMER NOTICE NOTES: UNLESS OTHERWISE SPECIFIED D 1. ALL RESISTOR AND CAPACITOR ARE 0603. * ASSY -A -B U1, U2 LTC4226CUD-1 LTC4226CUD-2 THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. 1 2 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. KIM T. VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APP ENG. VLADIMIR O. APPLICATION. COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. 3 TECHNOLOGY TITLE: SCHEMATIC DUAL HOT SWAP CONTROLLER SIZE N/A SCALE = NONE 4 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 www.linear.com Fax: (408)434-0507 LTC Confidential-For Customer Use Only DATE: IC NO. LTC4226CUD-1 / -2 REV. 3 DEMO CIRCUIT 1627A 04/12/2013, 04:37 PM SHEET 5 1 OF 2 D 1 2 3 4 5 COMPACT CIRCUIT VCC2 E15 +12V Z4 DFLT15A 2 R35 150k E24 E17 7 16 9 OUT2 CLS FTMR1 ON1 2 GND FAULT2 FAULT1 1 E1 GATE2 11 SENSE2 GND VCC1 ON1 B FTMR2 CT2 15nF B 8 E22 FTMR2 14 E21 FAULT2 15 E20 FAULT1 5 E18 B FTMR1 CT1 15nF OUT1 CLS 17 E19 * GND B B 4 B U2 GATE1 6 ON2 SENSE1 13 3 E23 GND 10 12 B ON2 A E16 B VCC2 R36 49.9k OUT2 1.25A MAX 1206 1 A Q6 Si2318CDS R37 0.033 B 1 C R32 0.033 VCC1 E13 +12V Z3 DFLT15A OUT1 1.25A MAX C Q5 Si2318CDS 2 R33 150k 1206 E14 B R34 49.9k B CUSTOMER NOTICE 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. KIM T. VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APP ENG. VLADIMIR O. APPLICATION. COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. D THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. 1 2 3 TECHNOLOGY TITLE: SCHEMATIC D DUAL HOT SWAP CONTROLLER SIZE IC NO. DATE: REV. LTC4226CUD-1 / -2 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 3 DEMO CIRCUIT 1627A 04/12/2013, 04:37 PM 4 SHEET 5 2 OF 2