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MAX1909 - Maxim Integrated Products

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MAX1909 (MAX8725 / MAX1909) Multichemistry Battery Charger

The MAX1909/MAX8725 highly integrated control ICs simplify construction of accurate and efficient multichemistry battery chargers. The MAX1909/MAX8725 use analog inputs to control charge current and voltage, and can be programmed by a host microcontroller (µC) or hardwired. High efficiency is achieved through use of buck topology with synchronous rectificati.

Features


• Precise Measurement Improves Safety and Performance
• ±0.5% Accurate Charge Voltage (0°C to +85°C)
• ±3% Accurate Input Current Limiting
• ±5% Accurate Charge Current
• Analog Inputs Control Charge Current and Charge Voltage
• Charge Any Battery Chemistry: Li+, NiCd, NiMH, Lead Acid, etc.
• Up to 17.65V (max) Battery Voltage
• Maximum 28V Input Voltage
• Programmable Charge Current > 4A
• Intelligent AC Adapter Interface Makes Design Easier
• Automatic System Power/Source Selection
• Analog Monitoring of Current Drawn from AC Input Source
• Digital Output Indicates AC Adapter Presence
• Grea.

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