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主要特征
应用/用途
Parametric specs for Battery Chargers
Charging VIN (V) (max) | 28 |
Max. ICHG (A) | 3 |
Lithium Ion Cells | 2 3 4 |
Protected VIN (V) (max) | 28 |
Charge Rate Set by | I2C/SMBus Resistor |
Charge Termination | Smart Battery Control |
Charge Regulation | Switchmode |
Oper. Temp. (°C) | -40 to +85 |
Package/Pins | See Data Sheet |
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Technical Docs
支持和培训
采样:
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参量
Parametric specs for Battery Chargers
Charging VIN (V) (max) | 28 |
Max. ICHG (A) | 3 |
Lithium Ion Cells | 2 3 4 |
Protected VIN (V) (max) | 28 |
Charge Rate Set by | I2C/SMBus Resistor |
Charge Termination | Smart Battery Control |
Charge Regulation | Switchmode |
Oper. Temp. (°C) | -40 to +85 |
Package/Pins | See Data Sheet |
主要特征
- 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
应用/用途
- 笔记本电脑
- PDA及其它手持设备
- 销售终端机(POS)
描述
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.
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.
Technical Docs
支持和培训
采样:
选择上方“样片”按钮将重定向至第三方ADI样片网站。登录后,所选部件将转移到您在此网站上的购物车。如果您之前从未使用过此网站,请创建一个新帐户。有关此样片网站的任何问题,请联系[email protected]。