5 4 3 2 1 REVISION HISTORY ECO GND TP13 7 8 TP1 ISNS0P VDD33 ISNS0M SHARE_CLK DESCRIPTION APPROVED YI S. PRODUCTION DATE 3-30-12 VOUT1_CFG VDD25 VTRIM1_CFG 30 29 28 R29 JP1 D OFF WP (Write Protect) ON (3880) 10.0K 27 26 TP5 25 24 C16 0.1µ F 23 22 C14 0.1µ F 21 C17 4.7µ F 1206 TP4 C15 4.7µ F 1206 CHP33 CHP25 20 19 FREQ_CFG 18 17 ASEL 16 RUN1 15 14 RUN0 GPIO1B GPIO0B 12 13 ALERTb SDA VTRIM0_CFG WP VOUT0_CFG SYNC SCL 3 31 32 BG1 33 34 PGND INTVCC 36 37 38 35 VIN BG0 BOOST0 BOOST1 ITH1 LTC3880EUJ 11 TP2 GPIO0B VSENSE1 SKT1 ITH0 6 ALBERTb 39 TSENSE1 ISNS1M 5 10 SW1 ISNS1P 4 SDA TG1 VSENSE0M 3 SCL SW0 VSENSE0P 2 9 TG0 40 41 GND TSNS0 1 D C REV __ C LED1 RED LED R21 1.00K R20 10.0K R19 1.00K +3.3V +5V R27 PARTIN Q3 TP0101K-T1-E3 ENB 5 3 1 R23 R25 10.0K 10.0K SENSE 1. ALL RESISTORS ARE 0805 ALL CAPACITORS ARE 0603. 2. INSTALL SHUNTS AS SHOWN. 5 GATE ON 3 LED2 PWRGD C12 0.01µ F Opt. 8 GREEN LED TP3 R28 C11 0.1µ F 1.00K CUSTOMER NOTICE 3 CHPWR C13 1.0µ F 1206 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. SEAN M. / HZ VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APP ENG. YI S. 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. 4 B 1 2 5 6 Q5 SI1470DH-T1-E3 7 GATEP R24 10.0K NOTE: UNLESS OTHERWISE SPECIFIED U3 LTC4361CTS8-2 IN Q4 2N7002A A OUT 6 R26 10.0K GND Q2 TP0101K-T1-E3 PGND TP6 2 0.499 R22 100K 4 B 4 Q1 TP0101K-T1-E3 TECHNOLOGY TITLE: SCHEMATIC LTC3880 PROGRAMMING BOARD SIZE N/A SCALE = NONE 2 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. REV. LTC3880EUJ FAMILY DEMO CIRCUIT 1709A Tuesday, April 17, 2012 3 SHEET 1 1 OF 2 A 5 4 3 2 1 PARTIN J1 TP9 1 Opt. TP7 +3.3V TO DC1427A C V+ 3.3V GND SCK/SCL MISO CS MOSI/SDA GND EESDA EEVCC EESCL EEGND GND GPIO_1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 R30 1 C18 R31 10.0K C20 0.1µ F R33 10.0K B 1 AUXP 2 SDA 3 GND 4 SCL 5 LGKPWR 6 ALERTB 7 GPIO_1 8 OUTEN 9 GPIO_2 10 GND 11 AUXSCL 12 AUXSDA TP8 R34 TP11 1 C19 1.0µ F TANT U2 24LC025-I/SN 1 2 R39 3 1 4 A0 VCC A1 WP A2 SCL VSS SDA R35 4.99K 8 SCL SDA 5V R36 R37 4.99K 4.99K 7 6 5 JP2 R38 NOTE: J1 AND J2 CONNECT TO RIBBON CABLES OF I2C / SM BUS CONTROLLER (DONGLE) OFF EE WP (Write Protect) ON ENB B 1 Opt. TP12 TECHNOLOGY 4 3 A LTC3880 PROGRAMMING BOARD 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 TITLE: SCHEMATIC SIZE THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. ENB 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. SEAN M. / HZ VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APP ENG. YI S. APPLICATION. COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. 5 3.3V C CUSTOMER NOTICE A TP10 +5V J2 D TANT SCL SDA + TO DC1613A PARTIN 1.0µ F + D R32 DATE: IC NO. REV. LTC3880EUJ FAMILY DEMO CIRCUIT 1709A Tuesday, April 17, 2012 2 3 SHEET 2 1 OF 2