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ICS1712N Datasheet(PDF) 1 Page - Galaxy Power, Inc. |
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ICS1712N Datasheet(HTML) 1 Page - Galaxy Power, Inc. |
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1 / 28 page  ICS1712 QuickSaver® Charge Controller for Nickel-Cadmium and Nickel-Metal Hydride Batteries General Description The ICS1712 is a CMOS device designed for the intelligent charge control of either nickel-cadmium (NiCd) or nickel-metal-hydride (NiMH) batteries. The controller uses a pulsed-current charging technique together with voltage slope and/or temperature slope termination. The ICS1712 employs a four stage charge sequence that provides a complete recharge without overcharging. The controller has four user-selectable charge rates available for customized charging systems. The ICS1712 monitors for the presence of a battery and begins charging if a battery is installed within the first 10 seconds after a reset. Voltage and temperature are measured to ensure a battery is within fast charge conditions before charge is initiated. Applications Battery charging systems for: - Portable consumer electronics - Power tools - Audio/video equipment - Communications equipment - Wireless handsets Features • Multiple charge termination methods include: - Voltage slope - Temperature slope - Maximum temperature - Charge timer • Four stage charge sequence: - Soft start charge - Fast charge - Topping charge - Maintenance charge • Reverse-pulse charging available in all charge stages • Four programmable charge rates between 15 minutes (4C) and two hours (C/2) • Out-of-temperature range detection - Hot battery: charger shutdown - Cold battery: low current charge • Ten second polling mode for battery detection • Battery fault with shutdown protection Block Diagram CHARGE DISCHARGE TEMPERATURE SENSE SELECT CHARGE VOLTAGE SENSE PROCESSOR MICROCODE CONTROL ADC RAM ROM OUTPUT CONTROL 0.5V HOT COLD RESET TERMINATION SELECT TEMPERATURE STATUS LED CHARGE MODE LED POLLING/ FAULT LED CONTROL CONTROL RC OSCILLATOR 2.0V QuickSaver ® ® is a registered trademark of Galaxy Power, Inc. |
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