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IC / MAX1645 / MAX1645BEEI / SOP-28

تولید کننده: MAXIM
مدل کالا: MAX1645BEEI
موجودی:
تماس 8893- 6186
قیمت: 0تومان

MAX1645 - MAX1645BEEI - MAXIM - SOP-28

Advanced Chemistry-Independent, Level 2 Battery Chargers with Input Current Limiting

General Description

The MAX1645 are high-efficiency battery chargers capable of charging batteries of any chemistry type. It uses the Intel System Management Bus (SMBus) to control voltage and current charge outputs
When charging lithium-ion (Li+) batteries, the MAX1645 automatically transition from regulating current to regulating voltage. The MAX1645 can also limit line input current so as not to exceed a predetermined current drawn from the DC source. A 175s charge safety timer prevents “runaway charging” should the MAX1645 stop receiving charging voltage/ current commands The MAX1645 employs a next-generation synchronous buck control circuity that lowers the minimum input- tooutput voltage drop by allowing the duty cycle to exceed 99%. The MAX1645 can easily charge one to four series Li+ cells.

Features

 Input Current Limiting
 175s Charge Safety Timeout
 128mA Wake-Up Charge
 Charges Any Chemistry Battery: Li+, NiCd,
NiMH, Lead Acid, etc.
 Intel SMBus 2-Wire Serial Interface
 Compliant with Level 2 Smart Battery Charger
Spec Rev. 1.0
 +8V to +28V Input Voltage Range
 Up to 18.4V Battery Voltage
 11-Bit Battery Voltage Setting
 ±0.8% Output Voltage Accuracy with Internal
Reference
 3A max Battery Charge Current
 6-Bit Charge Current Setting
 99.99% max Duty Cycle for Low-Dropout Operation
 Load/Source Switchover Drivers
 >97% Efficiency

Applications

Notebook Computers
Point-of-Sale Terminals
Personal Digital Assistants

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