5 3 3 2 1 3 2 1 D 4 CC1 OPT CIGATE OPT ITH CC2 RC1 4.22k 24 RBFB1 1M RBFB2 + ROFB2 21 17 FBG OFB BIAS D1 BZX84C3V0 RVM2 10k CTMR 0.1uF 2 BAT E14 2 RCL 24.3k E15 1 CNTC OPT 14 2 D2 OPT R2 OPT 3 13 GND R3 OPT 7 CCX OPT CBIAS 1uF 10V RCX * 2 3 E6 JP2 GND GND E21 GND E16 IBMON ENABLE CIIMON 1000pF DISABLE JUMPER 1 2 E7 CIBMON 1000pF E17 IIMON BIAS R4 JP4 CHRG D4 GREEN R5 2.2k 100k 3 D3 RED B CHRG_LED E8 * R18 4.7k * OPTIONAL THERMAL PROTECTION FOR Q1 DURING VOUT-SYS SHORT CIRCUIT R6 4.7k R7 1 FLT_LED 100k D5 RED E9 LED_PWR BIAS 5 HYST R15 20k R16 38.3k 6 OUT R17 1Meg E10 GND 3 2 RST_LED 8 1 2N7002L ASSY -A PROTECT CKT. FOR Q1 REG CKT. FOR Q2 JUMPER Q2 Q4 ROFB2 RCX CL LOADED SI7135DP LRC-LRZ-2010LF-R000 84.5k 10.0k 2.2uF 10nF NOT LOADED NO INSTALL INSTALL OPT -B LOADED NOT LOADED NO INSTALL OPT 0 OHM OPT NO INSTALL CUSTOMER NOTICE 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. 6 REF THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. 5 4 CBGATE 1. ALL RESISTORS ARE IN OHMS, 0603. ALL CAPACITORS ARE IN MICROFARADS, 0603. GND RNTC2 10k + - Q6 2 IN- JP1 1 NOTE: UNLESS OTHERWISE SPECIFIED 3 7 IN+ 4 NTC 1 R12 1Meg 2N7002L 3 V- 6 REF 1 2 6 OUT 8 2 HYST Q5 V+ IN- 5 V- R10 20k 4 + - GND R11 38.3k IN+ R14 78.7k 1 RNTC3 10k 3 U3 LTC1540CMS8 R13 10k V+ 7 R9 46.4k IL 3 U2 LTC1540CMS8 C1 4.7uF 10V R19 100k * THERMAL REGULATION FOR Q2 DURING 'INSTANT-ON' OPERATION BIAS 2 R8 10k 3 2 FLT RST E18 BIAS JP3 BIAS NOT ON THE BOARD 3 * B C J8 J9 TMR CHARGE 1 D E13 BIAS J5 GND A GND E12 J7 BAT NTC RST GND GND 28 GND RIL CCL 18.2k OPT CIL OPT 10 29 CL 4 9 IL TMR 8 IL TMR IBMON 1 CVM OPT CX 6 IIMON CHRG 12 E5 ENC RVM1 143k 5 VIN+ 3 IN FLT 27 CIN 1uF 50V 1210 J4 E11 GND BIAS 11 CLN VM VIN+ 3V-60V 26 1 C 06-23-11 VOUT- SYS NTC NTC RIS1 0.015 DATE DAVID B. ITH E3 GND E4 APPROVED VOUT- SYS CBAT 150uF 35V U1 LTC4000EUFD * DESCRIPTION PRODUCTION FAB CL1 - CL5 OPT 1206 X 5 PLCS 1206 F3 FUSE OPT OPT VIN CL 84.5k BAT 18 19 BGATE R1 20 23 CC BIAS VIN * 0.1uF OPT J3 ROFBX OPT JUMPER * IID R20 25 PULLUP E20 RBFBX OPT CBGATE 2 * 50V ROFB1 1M 7 6 5 8 RBG OPT CSP E19 * 3 2 1 RIG OPT 22 J2 3 2 1 IGATE GND 7 6 5 8 COUT 2.2uF 50V 1206 REV - J6 F2 FUSE Q4 RCS 0.01 ECO 16 E2 7 6 5 8 BFB 4 Q3 OPT Si7135DP 1 REVISION HISTORY F1 FUSE OPT 15 E1 GND * 4 VOUT 2 Q2 7 6 5 8 4 J1 CSN VOUT 3V-30V 4 Q1 Si7135DP 3 APPROVALS PCB DES. NC APP ENG. DAVE B. TECHNOLOGY 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 BATTERY CHARGER AND POWER MANAGEMENT BOARD SIZE IC NO. N/A SCALE = NONE 2 DATE: LTC4000EUFD DEMO CIRCUIT 1830A - A / B 06-23-11 SHEET 1 1 REV. 2 OF 1 A