- JP1 1 2 3 R3 1.30K U1 LTC2977 LTC2978 LTC2978A 1 C4 100nF 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 C5 100nF GND C9 100nF C10 100nF C6 100nF R5 10.0K (OPT) R4 10.0K GND +3V3 +3V3 GND 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 C8 100nF GND 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 JP2 1 2 3 4 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 C7 1.0uF 2 LED1 GREEN VSENSEP3 VSENSEM2 VSENSEP2 VDACM2 VDACP2 VSENSEM1 VSENSEP1 VDACM1 VDACP1 VDACP0 VDACM0 VSENSEM0 VSENSEP0 REFM REFP ASEL1 R7 10.0K GND VSENSEM1 VSENSEP1 VSENSEM2 VSENSEP2 NC GND/NC VDAC3 VDAC2 IIN_SNSM IIN_SNSP VDAC1 VDAC0 GND/NC VIN_SNS_CAP VSENSEM3 VSENSEP3 VSENSEM6 VSENSEP7 VSENSEM7 VOUT_ENO VOUT_EN1 VOUT_EN2 VOUT_EN3 VOUT_EN4 VOUT_EN5 VOUT_EN6 VOUT_EN7 VIN_EN DNC VIN_SNS VPWR VDD33 WP GND 10-28-13 VSENSEP0 VSENSEM0 VOUT_EN0 VOUT_EN1 VOUT_EN2 VOUT_EN3 AUXFAULTB DNC VIN_SNS VPWR VDD33 VDD33 VDD25 VDD25 TSENSE0 TSENSE1 U2 LTC2974 LTC2975 ISENSEM3 ISENSEP3 ISENSEM2 ISENSEP2 ISENSEM1 ISENSEP1 ISENSEM0 ISENSEP0 REFM GND REFP GND ASEL1 ASEL0 TSENSE3 CONTROL1 GND 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 C11 100nF PAD +3V3 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 PWRGD SHARE_CLK GND GND GND CONTROL2 CONTROL3 WDI/RESETB FAULTB0 FAULTB1 TSENSE2 WP SDA SCL ALERTB CONTROL0 VSENSEP6 VSENSEM5 VSENSEP5 VDACM7 VDACP7 VDACP6 VDACM6 VDACM5 VDACP5 VDACP4 VDACM4 VSENSEM4 VSENSEP4 VDACM3 VDACP3 VSENSEM3 GND MIKE P. 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 GND GND PAD +3V3 C3 100nF VDD33 VDD25 WP PWRGD SHARE_CLK WDI/RESETB FAULTB00 FAULTB01 FAULTB10 FAULTB11 SDA SCL ALERTB CONTROL0 CONTROL1 ASEL0 C2 1.0uF PRODUCTION +5V 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 +5V 1 R6 10.0K (OPT) R8 10.0K GND GND GND WDI/RESET GND FAULTB_PU ASEL1 WP GND JP3 1 2 3 4 SDA SDA SCL SCL ALERTB ASEL1 ASEL0 ASEL0 GND +5V S1 GND J1 +5V (100mA) 1 SDA 2 GND 3 SCL 4 +3.3V(100mA) 5 ALRTB 6 GPO_1 7 OUTEN 8 GPO_2 9 GND 10 AUXSCL 11 AUXSDA 12 4 +5V_DONGLE SDA GND SCL 5 6 1 2 3 R1 10.0K R2 10.0K POWER U3 24AA02 1 SCL WP 5 2 GND CONN_DC1613 3 SDA GND VCC 4 C1 1.0uF GND GND GND CUSTOMER NOTICE FIDUCIALS LTC CONFIDENTIAL FOR CUSTOMER USE ONLY PCB DES. www.linear.com APP ENG. 1. ALL RESISTORS ARE 1% 0603. 2. ALL CAPACITORS ARE 16V 0603 B SCALE = NONE