LTC4100

Features n Single Chip Smart Battery Charger Controller n 100% Compliant (Rev. 1.1) SMBus Support Allows for Operation with or without Host n SMBus Accelerator Improves SMBus Timing n Wide Output Voltage Range: 3.5V to 26V n Hardware Interrupt and SMBAlert Response Eliminate Interrupt Polling n High Efficiency Synchronous Buck Charger n 0.5V Dropout Voltage; Maximum Duty Cycle > 98% n AC Adapter Current Limit Maximizes Charge Rate n ±0.8% Voltage Accuracy; ±4% Current Accuracy n Up to 4A Charging Current Capability n 10-Bit DAC for Charge Current Programming n 11-Bit DAC for Charger Voltage Programming n User-Selectable Overvoltage and Overcurrent Limits n High Noise Immunity SafetySignal Sensor n Available in a 24-Pin SSOP Package Applications n Portable Instruments and Computers n Data Storage Systems and Battery Backup Servers L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and PowerPath is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners. Protected by U.S. Patents including 6650174 and 5723970. LTC4100 Smart Battery Charger Controller Description The LTC®4100 Smart Battery Charger is a single chip charging solution that dramatically simplifies construction of an SBS compliant system. The LTC4100 implements a Level 2 charger function whereby the charger can be programmed by the battery or by the host. A SafetySignal on the battery being charged is monitored for temp...