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MAX1645A：高级、与化学类型无关的Level 2电池充电器，带有输入限流

SMBus™总线控制，具有输入限流及安全定时器，为各种化学类型的电池提供智能充电

The MAX1645 is a high-efficiency battery charger 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 transitions 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 175sec charge safety timer prevents "runaway charging" should the MAX1645 stop receiving charging voltage/current commands. The MAX1645 employs a next-generation synchronous buck control circuitry that lowers the minimum input-to-output voltage drop by allowing the duty cycle to exceed 99%. The MAX1645 can easily charge one to four series Li+ cells.

关键特性 Input Current Limiting 175sec 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

功能框图 产品应用 笔记本电脑 PDA及其它手持设备 销售终端机(POS)

关键参数

数据手册DataSheet

开发工具

• MAX1645BEVKIT
• MAX1645BEVSYS

技术资料

• Smart Battery-Charging Schemes for Level 2 Chargers are Accurate and Efficient
• Battery Chargers Fulfill System Power Requirements and Charge Batteries

质量和环境数据

• MAX1645A.pdf

订购型号