5 4 3 2 1 REVISION HISTORY SPI TOP J3 C33 1000pF D 5 +POWER 2 630V 1206 3 60VLOCAL JP1 75V D4 C13 BAT46W 100nF 1206 D5 D6 BAT46W 1 6 7 8 EXT STACK 9 L1 10 Q12 RQJ0303PGDQALT-E LED12 R68 33 2512 L3 R56 475 1% 74476410 R55 475 1% 74476410 Q10 RQJ0303PGDQALT-E 1% 74476410 LED9 R53 475 1% 74476410 Q8 RQJ0303PGDQALT-E R64 33 L7 2512 R52 475 1% 74476410 1% 74476410 LED7 B 1% 74476410 R49 475 1% 74476410 LED5 1% 74476410 L12 1% 74476410 Q3 RQJ0303PGDQALT-E 1 R24 3.3k Q2 RQJ0303PGDQALT-E 74476410 1 2 JP2 -POWER L22 STACK EXT 2 1% WDTB C10 TOS S10 VREG C9 VREF S9 VTEMP2 C8 VTEMP1 S8 NC C7 V- S7 C0 C6 S1 S6 C1 C5 S2 S5 C2 C4 S3 S4 C3 CK L21 74476410 4 41 40 39 R41 VMODE 1M GPI02 38 36 1 GPI01/WDTB 37 TOS 35 VREG 34 VREF 33 V2 32 V1 GPI02 VREG VREG JP3 GND ACTIVE 3 1% 1% 1 JP4 R36 6 VREG 1M 1% 7 3 31 2 GND ACTIVE 30 GPI01 3 1 29 28 1 JP5 R37 1M 27 EEVCC SCL 1% EESDA 12 C18 100nF 1206 EEGND 14 NC WP A2 A1 A0 SDA 5 U5 24LC025-I/ST VREG 26 TOS 25 23 R39 D10 E2 GND ACTIVE 3 1 24 GPI02 VREG E1 JP6 GPI01 VREG 1% E3 VREG R29 100 1% PD27.5B E4 VC C9 C9 100nF 1206 C17 C16 VREG 100nF 100nF 1206 1206 D11 PDZ7.5B 3 2 S9 + U2A LT6004CMS8 R31 1 C8 C8 100nF 1206 PDZ7.5B 5 C15 1uF C7 100nF 1206 6 + U2B LT6004CMS8 R32 7 - L24 74476410 VTEMP2 10K 1% R40 OPT 1206 D13 PDZ7.5B C32 D7 BAT46W S7 1 VIN VOUT GND GND 1 6 2 2 3 C35 1uF 10uF 1206 4 100nF 1206 SHDN VIN GND VOUT_F GND VOUT_S GND GND C28 1uF 8 7 C25 1uF 6 5 C34 C21 1 10uF 1206 S6 D22 C24 1uF U3 LT1693-2IS8 PDZ7.5B BAV99 C29 1uF E5 D14 D23 10uF 1206 C6 C6 1206 BAV99 LTC6655BHMS8-3.3 OPT U4 LT1790BCS6-5 4 C26 1uF U6 +5V VREG D12 60VLOCAL C31 1uF 100V OPT 1206 S8 C7 C27 1uF VTEMP1 10K 1% R35 - L23 74476410 D24 C20 220pF E6 R1 33.2K 1% 2 3 4 IN1 VCC1 GND1 OUT1 IN2 VCC2 GND2 OUT2 BAV99 D21 T1 8 7 C22 100nF C23 6 5 1206 C30 1uF 4 6 1uF 3 5 BAV99 1 2 C5 C5 100nF 1206 D15 B PA0264NL R70 10K 1% PDZ7.5B S5 C4 C4 100nF 1206 D16 PDZ7.5B S4 C3 C3 100nF 1206 D17 PDZ7.5B S3 R28 3.3k 1. CAPACITORS AND RESISTORS ARE 0603. C2 C2 100nF 1206 D18 PDZ7.5B S2 A C1 C1 100nF 1206 D19 PDZ7.5B CUSTOMER NOTICE R69 100 1% C0 100nF 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. VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APP ENG. APPLICATION. COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. S1 D20 PDZ7.5B 74476410 THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. 5 D EESCL 9 R33 4.99K 1uF SCK 10 R34 4.99K C14 MOSI 11 GND ACTIVE 3 MISO SPI BOTTOM VMODE 1% CS S10 C19 +5V GPI01 S11 DI 7 1M R27 100 1% LED1 R45 475 L25 74476410 3 1 3 R57 33 L14 2512 74476410 100nF 1206 C11 5 74476410 NOTES: UNLESS OTHERWISE SPECIFIED, R26 3.3k Q1 RQJ0303PGDQALT-E 1 A 1% 22 C10 C10 R25 100 1% 2 LED2 R46 475 20 S11 R23 100 1% 2 3 R58 33 L13 2512 100 1% R22 3.3k LED3 R47 475 19 PDZ7.5B R19 R20 3.3k 2 3 R59 33 2512 18 D9 Q4 RQJ0303PGDQALT-E R21 LED4 R48 475 100nF 1206 GPI02 74476410 L20 EXT RTN 100 1% 2 3 R60 33 L11 2512 C11 S12 VMODE L19 VCC EXT +5V R18 3.3k Q5 RQJ0303PGDQALT-E 3 R61 33 L10 2512 17 C11 R17 100 1% 2 1 LED6 R50 475 15 S12 R15 R16 3.3k Q6 RQJ0303PGDQALT-E 3 R62 33 L9 2512 14 R13 100 1% 2 1 R51 475 13 PDZ7.5B R11 R14 3.3k Q7 RQJ0303PGDQALT-E 3 R63 33 L8 2512 D8 C12 SCKI JON M. R30 100 1% 100 1% 2 1 3 LED8 CELL12 CELL11 CELL10 CELL9 CELL8 CELL7 CELL6 CELL5 CELL4 CELL3 CELL2 CELL1 CELL0 VTEMP2 VTEMP1 TMPRTN 100nF 1206 R9 R12 3.3k 1 CELL VOLTAGES 72V MAX J1 3.3k 100 1% 2 1 3 R65 33 2512 L6 C12 16 R10 3.3k Q9 RQJ0303PGDQALT-E 1 L5 R54 475 12 R7 100 1% 2 1 3 R66 33 2512 R8 11 C12 21 LED10 C 3.3k 100 1% 2 1 3 R67 33 2512 R6 Q11 RQJ0303PGDQALT-E LED11 L4 2 1 3 R5 100 1% V+ SDI DO 42 4 74476410 SCKO 43 8 74476410 L2 SD0 APPROVED GND3 4 CSBI SDIO 6 GND2 100 CSBO 74476410 GND1 3 L18 8 2 06/24/10 13 RS07J CS 3 D3 74476410 44 8 L17 14 DATE SECOND PROTOTYPE VIN 2 VCC 1 1 R42 1M R43 1M GND 10 R4 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 R44 1M 6 U1 LTC6803IG-3 4 NC RS07J 74476410 12 2 CK VREF 2 GND3 DI 2 EESCL EEGND D0 2 EESDA EEVCC D2 6 8 GND CS 5 GND2 TP1 2 13 CS MOSI L16 DESCRIPTION J2 8 11 MISO 4 REV VREG RS07J 4 9 SCK D1 4 7 GND1 2 3 5 VCC 2 3 VIN 1 1 ECO L15 74476410 4 3 2 TECHNOLOGY MI JON M. TITLE: SCHEMATIC 12-CELL BATTERY STACK MONITOR 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: LTC6803IG-3 IC NO. REV. DEMO CIRCUIT 1653A Friday, July 02, 2010 1 SHEET 1 2 OF 1