DS1259

www.DataSheet4U.com DS1259 Battery Manager Chip www.dalsemi.com FEATURES Facilitates uninterruptible power Uses battery only when primary VCC is not available Low forward voltage drop Power fail signal interrupts processor or write protects memory Consumes less than 100 nA of battery current Low battery warning signal Battery can be electrically disconnected upon command Battery will automatically reconnect when VCC is applied Mates directly with DS1212 Nonvolatile Controller x 16 Chip to back up 16 RAMs Optional 16-pin SOIC surface-mount package PIN ASSIGNMENT NC VBAT BF NC BAT RST GND GND 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 VCCI VCCI NC VCCO VCCO PF NC NC 16-Pin DIP Package (300-mil) See Mech. Drawings Section DataShee DataSheet4U.com PIN DESCRIPTION NC VBAT BF NC 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 VCCI VCCI NC VCCO VCCO PF NC NC BAT RST GND PF VCCO VCCI - No Connect - Battery Input Connection - Battery Fail Output Signal - Battery Output - Reset Input - Ground - Power Fail Output Signal - RAM Supply - +5V Supply VBAT BF NC BAT RST GND GND 16-Pin SOIC Package (300-mil) See Mech. Drawings Section DESCRIPTION The DS1259 Battery Manager Chip is a low-cost battery management system for portable and nonvolatile electronic equipment. A battery connected to the battery input pin supplies power to CMOS electronic circuits when primary power is lost through an efficient switch via the VCCO pins. When power is supplied from the battery, the power-fail signal i...