5 4 3 2 1 REVISION HISTORY ECO BOB S. D 1 -48VRTN TP2 MBRM5100 2 D2 3 1 10A LONG R2 1 0 2 MBRM5100 1 D5 R3 3K 1 R1 91 1 R7 3K D4 1N4148W 2 1 R8 4.7K 1 2 DRAIN 7 6 GATE SENSE 4 VEE C7 R20 10 1 -48V_B F4 2 R24 2.4K R25 2.4K R26 2.4K R27 2.4K R28 2.4K D9 MBRM5100 1 1 1 R29 VEE 1 TP11 2 2 3 -48VOUT 8m MEDIUM SHORT [1] R23 2.4K 1 2 3 TP10 R22 2.4K 1 7A D11 MBRM5100 1 R21 1M 1 2 3 1 D10 MBRM5100 1 1 MEDIUM LONG 16V 2 2 B 22nF 2 10V 2 100nF 10V 2 7A PWRGD C6 330nF B F3 TP8 2 C5 5 SS TIMER R19 29.4K 1% 3 10nF 16V PWRGD 3 JP1 OPTO 2 1 PWRGD OV 10 C4 GRN 2 2 1 GRN R18 37.4K 1% 1 10nF 16V 2 D6 C8 1uF 16V UV 2 2 C3 D8 1 2 2 2 3 TP9 MOC207 PWRGD 8 -48V_A C 2 D12 BAV70 1 2 E 1 100K 1 GRN 1 TP7 - OPTO 2 [1] 9 D7 8 U1 1 1 100K 5 4 3 ISO1 R12 6 C 1 R11 100K 1 100K 7 VIN R10 1 2 R14 402K 1% 2 2 2 2 10K 1 1 10K R9 1 2 2 R17 TP5 1 3 D3 SMBT70A R13 402K 1% C R16 ZERO VOLT TRANSIENT RESERVOIR CAPACITOR R15 10K 2 C1 22nF 100V ENABLE_B SHORT + TP13 1 2 2 R4 0 Q2 MMBT5401 1 10K TP12 1 2 1 2 R6 1 TP6 2 2 SHORT 3 TP4 ENABLE_A 10K GRN 1 2 Q1 MMBT5401 R5 1 VRTN OUTPUT 1 F2 TP3 VRTN_B APPROVED 10/12/12 10A 2 D1 3 LONG DATE ADD VERSIONS 2 3 F1 TP1 VRTN_A DESCRIPTION 1 2 D REV -48V OUTPUT Q3 IRF1310NS VERSION U1 FUNCTION -A LTC4252CCMS-1 LATCH-OFF -B LTC4252CCMS-2 AUTO-RETRY CONTRACT NO. APPROVALS A DRAWN This circuit is proprietary to Linear Technology and supplied for use with Linear Technology parts. Customer Notice:Linear Technology has made a best effort to design a circuit that meets customer-supplied specifications; however, it remains the customers 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 Applications Engineering for assistance. 5 CHECKED MI BOB S. APPROVED ENGINEER DESIGNER 10/12/12 13:02:19 4 3 DATE 10/12/12 10/12/12 TECHNOLOGY 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 Fax: (408)434-0507 A TITLE SCH, LTC4252ACCMS-1/2, ADVANCED TCA HOT SWAP CONTROLLER SIZE CAGE CODE DWG NO REV DC787B SCALE: 2 FILENAME: 787B-1.DSN 1 SHEET 1 1 OF 1