LTC1759CG#PBF

LTC1759 is a smart battery charger is a single chip charging solution that dramatically simplifies construction of an SBS compliant system. It implements a level 2 charger function whereby the charger can be programmed by the battery or by the host. A thermistor on the battery being charged is monitored for temperature, connectivity and battery type information. The SMBus interface remains alive when the AC power adapter is removed and responds to all SMBus activity directed to it, including thermistor status (via the charger status command). The charger also provides an interrupt to the host whenever a status change is detected (e.g., battery removal, AC adapter connection). Charging current and voltage are restricted to chemistry specific limits for improved system safety and reliability. Limits are programmable by two external resistors. It is used in application such as portable computers, portable instruments, docking stations etc.

• Single chip smart battery charger controller, high noise immunity thermistor sensor
• 100% compliant (Rev 1.0) SMBus support allows for operation with or without host
• SMBus accelerator improves SMBus timing
• Hardware interrupt and SMBAlert response eliminate interrupt polling
• High efficiency synchronous buck charger
• AC adapter current limit maximizes charge rate
• 1% voltage accuracy; 5% current accuracy
• Dual 10bit DACs for charger voltage and current programming
• User-selectable overvoltage and overcurrent limits
• Operating ambient temperature is 0°C to 70°C, package style is 36-lead plastic SSOP

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party