A B C D C4 1uF 4 ALL CAPS ARE 25V. 2. 5 NTC STATUS VC VCC GND4 BAT NC2 VC LTC1729-4.2CMS8 GND SENSE BAT OVP U2 VCC1 VCC2 GND5 PROG LT1510-5CGN GND3 SENSE NC1 OVP GND2 BOOST SW GND1 ALL RES. VALUES ARE IN OHMS, 1/8W, 5%. 4 3 2 1 8 7 6 5 4 3 2 1 U1 1. NOTES: R5 200 D3 MMBD914L C1 0.22uF D1 MBRM120T3 POWERMITE 4 UNLESS OTHERWISE SPECIFIED L1 10uH CDRH5D28-100 5 5 6 7 8 9 10 11 12 13 14 15 16 3 R6 10K 2 3 COUT + 22uF 12.5V 3 4 JP1 1 2 R3 4.87K 1% J1 VIN 1 1 1 1 VBAT GND J5 J4 NTC GND 4.2V J3 J2 8.2V to 20V 1 1 DC294A Document Number 2 Date: Tuesday, January 28, 2003 Size Title 1630 McCARTHY BLVD. MILPITAS, CA 95035 (408) 432-1900 (408) 434-0507 FAX Sheet 1 1 LTC1729-4.2CMS8 LINEAR TECHNOLOGY CORPORATION D4 RED 1 R4 1.40K 1% R2 300 R1 1K C5 0.1uF C3 1uF C2 0.1uF CIN + 10uF MARCON 25V D2 MBRM120T3 POWERMITE 2 of 1 Rev A B C D