MAX1259:电池管理器

The MAX1259 battery manager provides backup-battery switching for CMOS RAM, microprocessors, or other low-power logic ICs. It automatically switches to the backup battery when the primary power supply is interrupted. 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. Battery discharge during shipping does not occur in the MAX1259, since the backup battery can be disconnected by strobing the RST input. 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 pin-compatible with the DS1259, but consumes three times less supply current. Commercial, extended, and military temperature range devices are available.

关键特性
  • 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 Low Battery
  • Battery Can Be Disconnected to Prevent Discharge During Shipping
  • Battery Automatically Reconnected when VCC is Applied
  • Pin-Compatible with the DS1259
  • Supply Current Three Times Lower than DS1259
  • Available in Extended-Industrial and Military Temperature Ranges
MAX1259:典型应用电路
MAX1259:典型应用电路
应用
  • CMOS RAM备用电池
  • 计算机
  • 控制器
  • 不间断电源
数据手册DataSheet
语言下载文件备注
英文MAX1259.pdfRev 3; 12/2014
关键参数
Part NumberICC
(µA)
Oper. Temp.
(°C)
Package/PinsBudgetary
Price
maxSee Notes
MAX12593330
  • -55 to +125
  • -40 to +85
  • 0 to +70
  • CDIP(N)/16
  • LCC/20
  • PDIP(N)/16
  • SOIC(W)/16
$4.24 @1k
订购型号
型号状况推荐替代产品封装温度RoHS/无铅
MAX1259C/D停止供货DICE SALES,;NA引脚;DICE;0°C至+70°C参考数据资料
MAX1259CPE停止供货MAX1259CPE+PDIP(N),;16引脚;158.4mm²0°C至+70°CRoHS/无铅:否
MAX1259CPE+生产中PDIP(N),;16引脚;158.4mm²0°C至+70°CRoHS/无铅:无铅
MAX1259CWE停止供货MAX1259CWE+SOIC(W),;16引脚;111.8mm²0°C至+70°CRoHS/无铅:否
MAX1259CWE+生产中SOIC(W),;16引脚;111.8mm²0°C至+70°CRoHS/无铅:无铅
MAX1259CWE+T生产中SOIC(W),;16引脚;111.8mm²0°C至+70°CRoHS/无铅:无铅
MAX1259CWE-T停止供货MAX1259CWE+TW.SO;16引脚0°C至+70°C参考数据资料
MAX1259EPE停止供货PDIP(N),;16引脚;158.4mm²-40°C至+85°CRoHS/无铅:否
MAX1259EWE停止供货MAX1259EWE+SOIC(W),;16引脚;111.8mm²-40°C至+85°CRoHS/无铅:否
MAX1259EWE+生产中SOIC(W),;16引脚;111.8mm²-40°C至+85°CRoHS/无铅:无铅
型号状况推荐替代产品封装:类型 引脚 占位面积封装图 编码/变更 *温度RoHS/无铅?
MAX1259EWE+T生产中SOIC(W),;16引脚;111.8mm²-40°C至+85°CRoHS/无铅:无铅
MAX1259EWE-T停止供货MAX1259EWE+TW.SO;16引脚-40°C至+85°C参考数据资料
MAX1259MJE停止供货CDIP(N),;16引脚;173.5mm²-55°C至+125°CRoHS/无铅:否
MAX1259MLP/883B生产中LCC,;20引脚;82.6mm²-55°C至+125°CRoHS/无铅:否
MAX1259.pdf MAX1259
MAX1259.pdf MAX1259