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Electronic Battery 1/2AA .95Ah POL. TAB

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Battery Management 2.5A Battery Backup Power Manager

SEPIC Constant- or Programmable-Current/Constant-Voltage Battery Charger Features: Charger Input Voltage May Be Higher, Equal to or Lower Than Battery Voltage Charges Any Number of Cells Up to 20V 1% Voltage Accuracy for Rechargeable Lithium Batteries 100mV Current Sense Voltage for High Efficiency (LT1513) 0mV Current Sense Voltage for Easy Current Programming (LT1513-2) Battery Can Be Directly Grounded 500kHz Switching Frequency Minimizes Inductor Size Charging Current Easily Programmable or Shut Down

Constant-Current/Constant-Voltage Battery Charger with Preset Voltage and Termination Flag Features: Fast Charging of Li-Ion, NiMH and NiCd Batteries Simple Charge Current Programming Requires Only One Low Cost, 1/32W Resistor High Efficiency Charger with Up to 1.5A Charge Current Precision 0.6% Internal Voltage Reference Preset Battery Voltages: 4.1V, 4.2V, 8.2V, 8.4V 500kHz or 200kHz Switching Frequency Minimizes Charger Size Low Reverse Battery Drain Current: 5µA Flag Indicates Li-Ion Charge Completion 5% Typical Charge Current Accuracy Low Shutdown Current LT1571-1: 200kHz, Adjustable Voltage LT1571-2: 200kHz, Fixed 8.2V or 8.4V LT1571-5: 500kHz, Fixed 4.1V or 4.2V

Constant-Current/Voltage High Efficiency Battery Charger Features: Simple Charging of Li-Ion, NiMH and NiCd Batteries Very High Efficiency: Up to 97% Precision 0.5% Charging Voltage Accuracy Preset Battery Voltages: 12.3V, 12.6V, 16.4V and 16.8V 5% Charging Current Accuracy Charging Current Programmed by Resistor or DAC 0.5V Dropout Voltage, Duty Cycle > 99.5% AC Adapter Current Limit* Maximizes Charging Rate Flag Indicates Li-Ion Charge Completion Auto Shutdown with Adapter Removal Only 10µA Battery Drain When Idle Synchronizable Up to 280kHz

Constant-Voltage/Constant-Current Battery Charger Features: Charges NiCd, NiMH and Lithium-Ion Batteries - Only One 1/10W Resistor Is Needed to Program Charging Current High Efficiency Current Mode PWM with 1.5A Internal Switch and Sense Resistor 3% Typical Charging Current Accuracy Precision 0.5% Voltage Reference for Voltage Mode Charging or Overvoltage Protection Current Sensing Can Be at Either Terminal of the Battery Low Reverse Battery Drain Current: 3µA Charging Current Soft Start Shutdown Control 500kHz Version Uses Small Inductor