A B C INTVCC 1 E1 DCM 4 JP1 FCB RRUN 100K 4 SGND 5 ION 4.5V-16V C4 10uF 16V GND 5 6 7 8 SENSE+ 24 SENSE- 23 4 PGND 22 Q1 Si7342DP BG 21 DRVCC 20 INTVCC 19 Z2 18 Z1/Ssenable 17 VOUTsense+ 1 2 3 E6 CVCC 10uF 6.3V L1 1.0uH IHLP-2525CZ-01 VOUT E14 VOUT C9 47uF 6.3V D1 B320A 3 R7 100 1% C10 47uF 6.3V C11 47uF 6.3V (Opt) + C8 (Opt) 26 27 25 ZVCC 2.5V/10A C12 10uF 6.3V 4 Q2 Si7892ADP VOUT E7 + C7 GND E8 R8 100 1% GND E15 2 16 VINSNS 15 14 PLLIN PLLFLTR 13 12 VOUTsense+ 9 N/C 8 VIN VDIFFOUT 7 C5 0.22uF SW TG 29 28 Z0 FCB 31 32 30 RUN VON solder side, exposed pad TRACK/SS RON 66.5K 1% CC2 100pF DB CMDSH-3-LTC 2 1 U1 LTC3823EUH 5 6 7 8 ITH 6 CC1 6800pF C3 10uF 16V 1 2 3 3 BOOST VFB 11 RC 1.5K VRNG 2 VOUTsense- C6 220pF 1 N/C R6 11K PGOOD R5 16.2K 1% 10 3 (Opt) C2 10uF 16V E5 33 R3 39K VIN E3 + C1 RBOOST 0 E4 GND R4 5.11K 1% VIN E2 RPG 100K PGOOD INTVCC 4 R2 26.7K 1% 3 RUN E R1 23.2K 1% 2 FC D PLLIN E11 GND GND RVIN 10 RPL 10K CSS 0.1uF CPL 0.01uF CP 1000pF CVIN 0.1uF LTC CONFIDENTIAL - FOR CUSTOMER USE ONLY 1 Customer Notice NOTES: 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 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. UNLESS OTHERWISE SPECIFIED A VOUTsense- E9 3 2 E12 E13 JP2 Z1 SS E10 TRACK 2 1 TRACK/SS B C D LINEAR TECHNOLOGY CORPORATION 1630 McCARTHY BLVD. MILPITAS, CA. 95035 408-432-1900 408-434-0507 FAX Title High Efficiency, High Power Buck Converter with Differential Output Sensing and Tracking Size Document Number Date: Tuesday, August 22, 2006 Demo Circuit 1021A Rev LTC3823EUH Sheet E 1 of 1 1