MAX1645EEI

The MAX1645EEI is one member of the MAX1645 family which is designed as the advanced chemistry-independent, level 2 battery charger with input current limiting that can be used in (1)notebook computers; (2)point-of-sale terminals; (3)personal digital assistants. This device employs a next-generation synchronous buck control circuitry that lowers the minimum input-tooutput voltage drop by allowing the duty cycle to exceed 99%.

Features of the MAX1645EEI are:(1)input current limiting; (2)175sec charge safety timeout; (3)128mA wake-up charge; (4)charges any chemistry battery: Li+, NiCd, NiMH, Lead Acid, etc.; (5)Intel SMBus 2-wire serial interface; (6)compliant with level 2 smart battery charger spec. Rev. 1.0; (7)+8V to +28V Input voltage range; (8)up to 18.4V battery voltage; (9)11-bit battery voltage setting; (10)±0.8% output voltage accuracy with internal reference; (11)3a max battery charge current; (12)6-bit charge current setting; (13)99.99% max duty cycle for low-dropout operation; (14)load/source switchover drivers; (15)>97% efficiency.

The absolute maximum ratings of the MAX1645EEI can be summarized as:(1)DCIN, CVS, CSSP, CSSN, LX to GND:-0.3V to +30V;(2)CSSP to CSSN, CSIP to CSIN:-0.3V to +0.3V;(3)PDS, PDL to GND:-0.3V to (VCSSP+0.3V);(4)BST to LX:-0.3V to +6V;(5)DHI to LX:-0.3V to (VBST+0.3V);(6)CSIP, CSIN, BATT to GND:-0.3V to +22V;(7)lead temperature (soldering, 10sec):+300°C;(8)storage temperature:-60°C to +150°C;(9)operating temperature range:-40°C to +85°C;(10)continuous power dissipation (TA=+70°C):860 mW. If you want to know more information such as the electrical characteristics about the MAX1645EEI, please download the datasheet in www.seekic.com or www.chinaicmart.com.