Maxim Integrated MAX1259
The MAX1259 battery manager provides backup-battery switching for CMOS RAM, microprocessors, or other lowpower logic ICs. It automatically switches to the backup battery when the primary power supply is interrupted. Battery discharge during shipping does not occur in the MAX1259, since the backup battery can be disconnected by strobing the RST input.| Part No. | MAX1259 |
|---|---|
| Datasheet | MAX1259 Download |
| Manufacturer |  Maxim Integrated |
| Description | Battery Manager |
| Buy | Stock & Price |
GENERAL DESCRIPTION
Low-loss switches guarantee an input-to-output differential of only 200mV while supplying 250mA from the primary power supply or 15mA from the battery. A battery-fail output signal indicates when the backup battery is below +2V, and a power-fail output signal indicates when the primary power supply is low. The MAX1259 monitors the backup battery, warns of impending power failures, and switches the memory to the battery when failures occur. The MAX1259 is pincompatible with the DS1259, but consumes three times less supply current. Commercial, extended, and military temperature range devices are available.APPLICATIONS
●● Battery Backup for CMOS RAM●● Uninterruptible Power Supplies
●● Computers
●● Controllers Functional Diagram VCCI VCCO VBATT RESET LOGIC RST PF BF REF MAX1259 BAT GND
FEATURES
●● Switches to Backup Battery if Power Fails●● Consumes Less than 100nA of Battery Current
●● Power-Fail Output Signals Primary Power-Supply Loss
●● Battery Monitor Indicates...
