5 VIN1 4 3 2 1 VIN2 R35 OPT VOUT1 VOUT0 1206 L1 1uH D CIN1 10uF 25V 1210 C2 C1 2200pF COMP1A CIN2 10uF 25V 1210 CIN3 10uF 25V 1210 CIN4 10uF 25V 1210 CIN5 10uF 25V 1210 CIN6 10uF 25V 1210 C12 10uF 25V C13 10uF 25V R2 OPT 0805 P1 OPT R7 4.99k 1% R3 OPT C9 47uF 6.3V 0805 CO2 100uF 6.3V 1210 + CO1 330uF 6.3V 7343 CO3 100uF 6.3V 1210 CO7 100uF 6.3V 1210 F11 F12 SVIN P3 R19 C A5 OPT 0805 E1 E2 C5 2200pF R20 B10 F1 F2 4.22k 1% C6 OPT C5 D5 COMP0A E8 D8 VOUT0 C7 OPT P4 P6 R37 10 VOS0+R SCL SDA ISNS0B+ ISNS0A+ GPIO0 TSNS0B TSNS0A D10 E10 D9 GPIO1 WP COMP0A COMP0B RUN1 VORB0+ VDD25 VORB0VOUT0 VOUT0 VOUT0 VOUT0 VOUT0 VOUT0 VOUT0 VOUT0 VOUT0 VOUT0 VOUT0 VOUT0 VOSNS0+ B VOSNS0- E9 R24 OPT G4 R25 OPT H4 R27 OPT G5 R28 OPT H5 R29 6.34k 1% G6 R33 0 VOSNS0ASEL FSWPHCFG VTRIM0CFG DNC DNC DNC DNC VOUT1CFG VTRIM1CFG VOS0+R VOS0-R A VOS1+R VOUT0 VOUT1 VIN1 J1 1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 VIN VIN GND GND GND GND GND N/A GND VOS1+ VOS1VOS2+ VOUT1 VOUT1 VOUT1 VOUT1 VOUT2 VOUT2 VOUT2 VOUT2 VIN VIN GND GND GND GND GND N/A GND GND RUN1 RUN2 VOUT1 VOUT1 VOUT1 VOUT1 VOUT2 VOUT2 VOUT2 VOUT2 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 CUSTOMER NOTICE [1] RUN0 RUN1 VERSION -A -B -C -D VOUT0 VOUT1 MODULE LTM4676 LTM4676A LTM4675 LTM4677 5 E7 SYBC H7 SHARE_CLK E5 ALERTB 4 E6 SCL D6 SDA E4 GPIO0B F4 GPIO1B COMP1A R11 10K R12 10K R13 10K R14 10K R15 10K R16 10K R17 10K R18 10K R21 K6 F5 RUN0 F6 RUN1 J6 10K P5 VOUT0 A1 A2 A3 B1 B2 B3 C1 C2 C3 D1 D2 D3 C10 47uF 6.3V 0805 CO4 100uF 6.3V 1210 CO5 100uF 6.3V 1210 + CO6 330uF 6.3V B R39 100 C10 E11 H11 K10 VOSNS0- C11 OPT D1 B0520WS-7-F J2 AUX3V4 SCL GND SDA 4 3 2 1 VOUT0 SCL VOUT1 R31 OPT 0805 SDA APPROVALS TECHNOLOGY R32 OPT 0805 1630 McCarthy Blvd. Milpitas, CA 95035 www.linear.com Phone: (408)432-1900 Fax: (408)434-0507 A LTC CONFIDENTIAL - FOR CUSTOMER USE ONLY TITLE: SCHEMATIC SIZE C:\DESIGN\22\2269A-2\2269A-2.DSN 3 R5 OPT C 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. RUN1 OPT VDD33 A4 A6 A7 A8 A9 A10 B4 B5 B6 B7 B8 B9 C4 C6 C7 C8 C9 D4 D7 E3 F3 F10 G3 G10 G11 G12 H3 H10 J4 J10 K4 K7 K8 K9 L4 L5 L6 L7 L8 L9 M4 M6 M7 M8 M9 M10 VIN1 VDD33 VOUT0CFG GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND H6 J7 SGND SGND SGND SGND VOSNS0- R4 RUN0 OPT G7 G8 F7 F8 VOS0-R H9 ALERT C8 OPT R38 10 VOSNS1 J1 J2 J3 K1 K2 K3 L1 L2 L3 M1 M2 M3 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 J9 VCRB1 H8 J8 COMP1B COMP1A K5 J5 TSND1B TSNS1A ISNS1A+ ISNS1B+ H2 H1 G2 G1 ISNS1AISNS1B- M5 SNUB1 L10 SW1 SYNC SHARE_CLK GPIO1B OPT R10 10K SW0 D R9 G9 F9 SVIN SVIN U1 [1] R8 GPIO0B R36 10 COMP0A VDD33 ISNS0BISNS0A- OPTIONAL JUMPER FOR DUAL PHASE SINGLE OUTPUT CONFIGURATION SVIN INTVCC INTVCC SNUB0 VOUT1 C3 OPT VOS1+R RUN0 R23 OPT R22 100 VIN1 VIN1 VIN1 VIN1 VIN1 VIN1 VIN1 VIN1 VIN1 H12 J11 J12 K11 K12 L11 L12 M11 M12 0 R6 VIN0 VIN0 VIN0 VIN0 VIN0 VIN0 VIN0 VIN0 VIN0 R1 100 P2 C4 OPT A11 A12 B11 B12 C11 C12 D11 D12 E12 R40 OPT 1210 N/A SCALE = NONE 2 DATE: HIGH EFFICIENCY, DC/DC STEP-DOWN, MODULE REGULATOR WITH POWER SYSTEM MANAGEMENT IC NO. LTM4676/LTM4676A/LTM4675/LTM4677 REV. DEMO CIRCUIT 2269A-A/D Monday, November 10, 2014 SHEET 1 2 1 OF 1