LTC1759CG

Product Summary

The LTC1759CG is a Smart Battery Charger. The LTC1759CG is a single chip charging solution that dramatically simplifies construction of an SBS compliant system. The LTC1759 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 applications of the LTC1759CG include Portable Computers, Portable Instruments, Docking Stations.

Parametrics

LTC1759CG absolute maximum ratings: (1)Voltage at VCC, UV, BAT1, CLP,CLN, SPIN, SENSE with respect to AGND: -0.3V to 27V; (2)Voltage at DCIN, BAT2 with Respect to DGND: -0.3V to 27V; (3)Voltage at INTB, SDA, SCL, DCDIV with Respect to DGND: - 0.3V to 7V; (4)BOOST, BOOSTC Voltage with Respect to VCC: 10V; (5)Voltage at VDD with Respect to DGND: -0.3V to 7V; (6)SW Voltage with Respect to AGND: -2V to VCC; GBIAS, SYNC: -0.3V to 10V; (7)VC, PROG, VSET Voltage with Respect to AGND: -0.3V to 7V; (8)TGATE, BGATE Current Continuous: ±200mA; (9)TGATE, BGATE Output Energy (per Cycle): 2mJ; (10)PGND, DGND with Respect to AGND: ±0.3V; (11)Current into Any Pin: ±100mA; (12)Operating Ambient Temperature Range: 0℃ to 70℃; (13)Operating Junction; (14)Temperature Range: -40℃ to 125℃; (15)Storage Temperature: -65℃ to 150℃; (16)Lead Temperature (Soldering, 10 sec): 300℃.

Features

LTC1759CG features: (1)Single Chip Smart Battery Charger Controller; (2)100% Compliant (Rev 1.0) SMBus Support Allows for Operation with or without Host; (3)SMBus Accelerator Improves SMBus Timing; (4)Hardware Interrupt and SMBAlert Response Eliminate Interrupt Polling; (5)High Efficiency Synchronous Buck Charger; (6)0.5V Dropout Voltage; Maximum Duty Cycle > 99.5%; (7)AC Adapter Current Limit Maximizes Charge Rate*; (8)1% Voltage Accuracy; 5% Current Accuracy; (9)Up to 8A Charging Current Capability; (10)Dual 10-Bit DACs for Charger Voltage and Current Programming; (11)User-Selectable Overvoltage and Overcurrent Limits; (12)High Noise Immunity Thermistor Sensor; (13)Small 36-Lead Narrow (0.209") SSOP Package.

Diagrams