5 4 3 2 1 REVISION HISTORY 16 ASEL0 17 ASEL1 GPIO0B 18 VOUT0_CFG GPIO1B 19 VOUT1_CFG 20 FREQ_CFG RUN0 21 PHAS_CFG TSNS1 COMP1 WP 31 IAVG1 R26 0603 C37 OPT 1 2 FB1 FREQ_CFG VSENSE1+ PHAS_CFG ISENSE1- IAVG0 TG1/PWM1 IAVG1 C41 OPT 5 10k BG1/EN1 R29 OPT R9 820pF 29 C55 34 VSENSE1+ 33 ISNS1- 32 ISNS1+ R18 9 VIN 6 8 NC VIN 4 29 PVCC 32 AGND AGND SW C17 OPT C18 OPT R16 0 0603 21 SW SW 22 25 SW PGND C16 470uF + 0.22uF VOUT1- C31 VDR C35 VDR 1uF TG1 1uF C52 R15 0.1uF 24.9K VIN 28 P3 31 2 27 PWM C33 22uF 1210 VIN EN/FAULT# VIN ZCD# VIN GL BOOT VIN AGND GL PHASE GL SW PGND SW PGND PGND SW SW C34 22uF 1210 10 11 TSNS1 B 33 5 7 C48 10nF R25 0 C36 Q6 E9 MMBT3906LT1G VSENSE1+ 100nF 17 19 20 R22 0 0603 VOUT1 16 18 VOUT1+ L2 0.17uH FP1007R3-R17-R R27 1.5k C43 C38 C39 C40 100uF 1206 100uF 1206 100uF 1206 100uF 1206 OPT R67 OPT R98 OPT J9 VOUT1 ADJ. UP TO 2.5V MAX 35A + + C19 OPT + C26 470uF C27 470uF + C28 OPT J8 GND 21 SW 22 SW 23 24 25 26 12 PGND PGND 13 14 SW SW SW SW SW U3 FDMF5820DC PGND PGND C42 COMP0 R62 C VOUT0+ 0.22uF VDD33 FREQ_CFG R40 OPT C15 470uF + VFB1 OPTIONAL FOR 2-PHASE OPERATION R39 OPT 100uF 1206 + VSENSE1+ VOUT1_CFG R38 OPT 100uF 1206 + VSENSE0+ R34 OPT R37 OPT VOUT0 ADJ. UP TO 2.5V MAX 35A C14 820pF 499 COMP1 30 28 OPT 100uF 1206 C13 VSENSE0- 15 R61 100uF 1206 R7 1.5k 20 C12 C54 220pF 10pF R32 OPT COMP1 C23 TSNS1 C50 P4 R36 OPT 0.17uH FP1007R3-R17-R 19 VSENSE0+ 34 R35 OPT 18 499 35 R33 OPT J3 L1 E8 3 27 C21 VDR VOUT0_CFG VOUT0 17 E7 10pF ASEL1 R31 OPT MMBT3906LT1G 16 VFB0 C22 220pF 1 R30 OPT Q1 J4 R57 1k ASEL0 C32 10nF 100nF R24 0 R58 1k VDD25 C11 0 C20 TSNS0 VOUT0_CFG VOUT1_CFG SW 5 7 R5 GND R20 7.32k ASEL1 SW D TSNS0 33 0603 COMP0 R12 7.32k ASEL0 ISENSE1+ R23 OPT VSENSE0- DATE 6-12-14 C10 22uF 1210 40 C30 WP RUN1 39 35 HAORAN W. 11 9 SHARE_CLK VSENSE0+ FDMF5820DC SW 26 VCC 4 COMP0 ISNS0- SYNC TSNS0 IAVG0 B FB0 SHARE_CLK 37 36 APPROVED PRODUCTION 10 VIN R41 10k 0603 WP SYNC RUN1 ISNS0+ 8 R28 10k 0603 23 VSENSE0- SW PGND VIN R21 10k 0603 8 SYNC VSENSE0+ RUN0 PGND U1 38 SW PGND 6 ALERTB GPIO1 PGND NC R19 10k 0603 24 SHARE_CLK ISENSE0- SW 29 R17 10k 0603 15 RUN1 SDA C R14 10k 0603 14 RUN0 GPIO0 GL 6 GND R13 10k 0603 GPIO1B SCL ISENSE0+ 41 R11 10k 0603 BG0/EN0 LTC3882EUJ IAVG_GND R10 10k 0603 13 ALERT 28 TG0 PHASE PVCC 12 GPIO0B VDD33 U2 SDA 7 BOOT VIN AGND GL 26 11 TG0/PWM0 GL PGND 10 SDA ALERTB 15 VIN 14 E4 VDD25 SCL 34 ZCD# 3 9 SCL VDD25 VINSNS VDD33 22 VDD33 VDD33 E3 VDD25 25 GND VIN 23 35 VIN EN/FAULT# 24 27 C9 4.7uF 1uF 2 PWM 12 C8 VDR 31 4 C7 1uF E2 R60 1k C6 22uF 1210 SW P2 30 3 VDD25 32 GND R59 1k VCC VDD33 AGND C5 0.1uF 6.3V VDD33 AGND C4 330uF 16V PGND + VCC 1 1 J2 C3 330uF 16V 13 D + DESCRIPTION 1 VIN 30 R1 VIN 7V-14V VCC VIN TMON J1 P1 REV __ C53 R2 0.1uF 24.9K VIN TMON C2 1uF VDR E1 ECO VDR C1 1uF E19 GND VFB1 PHAS_CFG A IAVG0 CUSTOMER NOTICE IAVG1 VSENSE0+ VSENSE1+ R100 OPT GPIO0B GPIO1B R101 OPT RUN0 RUN1 NOTE: UNLESS OTHERWISE SPECIFIED 1. ALL RESISTORS ARE IN OHMS, 0402. ALL CAPACITORS ARE IN MICROFARADS, 0402. 2. INSTALL SHUNTS AS SHOWN. 5 4 3 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. HZ VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APP ENG. HAORAN W. 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. 2 TECHNOLOGY TITLE: SCHEMATIC HIGH EFFICIENCY DC/DC CONVERTER WITH POWER SYSTEM MANAGEMENT SIZE 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 DATE: IC NO. LTC3882EUJ REV. 1 DEMO CIRCUIT 2174A Wednesday, November 12, 2014 SHEET 1 1 OF 3 A 5 4 3 2 1 D D VIN VIN R48 0.01 2512 DYNAMIC LOAD CIRCUIT VOUT0 2 4 E12 3 VCC COUT7 10uF C59 0.1uF E14 1206 5 11 12 SHDN2 VOUT1 VOUT2 VOUT1 VOUT2 1 2 3 10 VDR BYP1 BYP2 E10 ON 4 PULSE IN OFF DO NOT EXCEED 5% DUTY CYCLE! R42 10K 0603 E11 6 J7 E13 R45 0.01 2512 VDR 8 R66 6.19K COUT3 10uF 1206 IOUT TST 1 C47 1uF 0805 GND CBYP2 0.01uF 1 Q3 RJK0305DPB 7 CBYP1 0.01uF GND OPT VOUT1 RSD2 JP4 10K VDR VIN2 VIN2 13 SHDN1 VCC C VIN1 14 15 1 2 3 R53 1 2 3 OFF U6 LT3029IMSE JP6 VCC ON CIN1 1uF D9 VIN1 RSD1 10K 1 VIN C 2 3 4 5 VIN NOTE: PULSE OUT 10mV / AMP E15 GND R64 6.19K J14 R63 2K J10 1 VOUT0 VOUT1 VOUT0 C58 0.1uF 0805 C57 0.1uF 0805 1 VOUT1 2 3 4 5 GND 9 17 5 2 NC R65 2K ADJ2 GND ADJ1 2 3 4 5 16 E16 B B GND E17 GND CUSTOMER NOTICE 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. HZ VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APP ENG. HAORAN W. APPLICATION. COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. A THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. 5 4 3 2 TECHNOLOGY TITLE: SCHEMATIC HIGH EFFICIENCY DC/DC CONVERTER WITH POWER SYSTEM MANAGEMENT SIZE 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 DATE: IC NO. LTC3882EUJ REV. 1 DEMO CIRCUIT 2174A Wednesday, November 12, 2014 SHEET 2 1 OF 3 A 5 4 3 2 1 ALL PARTS ON THIS PAGE ARE FOR DEMO BOARD ONLY, NOT NEEDED IN CUSTOMER DESIGN E27 GPIO1B ALERTB SDA SCL SHARE_CLK E18 D8 J15 1 VDD33 D 4 3 2 1 AUX3V4 SCL GND SDA E22 E23 R68 OPT SYNC GPIO1B E24 JP1 2 E25 E26 3 AUX3V4 SDA 1 R91 OPT C NC GPIO0-GPIO1 SYNC ALERTB 2 AUX3V4 E28 D GPIO0B R73 0 SHARE_CLK GPIO0B SCL 0603 TO DC2086A D7 OPT D4 OPT R90 OPT E29 RUN0 R71 0 3 C45 0603 100nF U5 A0 2 3 4 A1 WP A2 SCL VSS SDA R76 4.99K 0603 8 AUXVCC VCC 7 EEWP 6 EESCL 5 EESDA R78 OPT 1 2 3 4 5 6 7 8 9 10 11 12 13 14 VIN R75 24LC025-I/ST RUN1 RUN1 SGND FAULTB CTRL ALERTB SDA SHARE_CLK SCL RESETB AUXP UNUSED UNUSED GND GND 12V 12V SW3 RUN1 ON SW4 RUN0 5 2 R69 10 0603 ON 5 2 R70 10 0603 C OFF OFF C29 10nF 0603 C44 10nF 0603 J12 DEMO HEADER (F) R82 OPT 1206 VIN R74 1 C NC RUN0-RUN1 OPT E31 1 2 3 4 5 6 7 8 9 10 11 12 13 14 J13DEMO HEADER (M) R77 4.99K 0603 R72 4 1 FAULTB CTRL ALERTB SDA SHARE_CLK SCL RESETB AUXP UNUSED UNUSED GND GND 12V 12V R83 0 0603 E30 6 3 R92 OPT TO DC1613A 1 JP2 4 1 C 0603 6 3 AUXP SDA GND SCL LGKPWR ALERTB GPIO_1 OUTEN_0 OUTEN_1 GND AUXSCL AUXSDA RUN0 3V3 1 2 3 4 5 6 7 8 9 10 11 12 2 3V3 J11 OPT PSM STACKING CONNECTORS: J12, FEMALE, CONN RECEPT 2MM DUAL R/A 14POS, Sullins Conn. NPPN072FJFN-RC J13, MALE, CONN HEADER 14POS 2MM R/A GOLD, Molex Connector Corp. 87760-1416 OPT B B E21 GND 3V3 GPIO0 D6 Q22 1 VIN D10 ALERTB RED VDD33 2 CUSTOMER NOTICE R86 10K 0603 2N7002A R84 127 0603 2 2N7002A GPIO1B Q19 Si2365EDS 3 Si2365EDS Q20 3 3 1 2 GPIO0B 3V3 1 GREEN GREEN Q21 A ALERTB 3 D5 R80 200 0603 GPIO1 1 R81 200 0603 3V3 2 3V3 R87 15.8k 0603 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. HZ VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APP ENG. HAORAN W. 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. 5 4 APPROVALS 3 TECHNOLOGY TITLE: SCHEMATIC HIGH EFFICIENCY DC/DC CONVERTER WITH POWER SYSTEM MANAGEMENT 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. LTC3882EUJ REV. 1 DEMO CIRCUIT 2174A Wednesday, November 12, 2014 SHEET 3 1 OF 3 A