MAX8903B 2A 1节Li+电池DC-DC充电器，用于
the max8903b is integrated 1-cell li+ chargers and smart power selector™ with dual (ac adapter and usb) power inputs. the switch mode charger uses a high switching frequency to eliminate heat and allow tiny external components. it can operate with either separate inputs for usb and ac adapter power, or from a single input that accepts both. all power switches for charging and switching the load between battery and external power are included on-chip. no external mosfets, blocking diodes, or current-sense resistors are required.
the max8903b features optimized smart power control to make the best use of limited usb or adapter power. battery charge current and sys output current limit are independently set. power not used by the system charges the battery. charge current and sys output current limit can be set up to 2a while usb input current can be set to 100ma or 500ma. automatic input selection switches the system from battery to external power. the dc input operates from 4.15v to 16v with up to 20v protection, while the usb input has a range of 4.1v to 6.3v with up to 8v protection.
the max8903b internally block current from the battery and system back to the dc and usb inputs when no input supply is present. other features include prequal charging and timer, fast charge timer, overvoltage protection, charge status and fault outputs, power-ok monitors, and a battery thermistor monitor. in addition, on-chip thermal limiting reduces battery charge rate and ac adapter current to prevent charger overheating. the max8903b is available in a 4mm x 4mm, 28-pin thin qfn package.
efficient dc-dc converter eliminates heat 4mhz switching for tiny external components instant on—works with no battery or low battery dual current-limiting input circuits—ac adapter or usb automatic adapter/usb/battery switchover to support load transients 50mω system-to-battery switch supports usb spec thermistor monitor integrated current-sense resistor no external mosfets or diodes 4.1v to 16v input operating voltage range 应用/使用
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MAX8903B 2A 1节Li+电池DC-DC充电器，用于
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the max8903b features optimized smart power control to make the best use of limited usb or adapter power. battery charge current and sys output current limit are independently set. power not used by the system charges the battery. charge current and sys output current limit can be set up to 2a while usb input current can be set to 100ma or 500ma. automatic input selection switches the system from battery to external power. the dc input operates from 4.15v to 16v with up to 20v protection, while the usb input has a range of 4.1v to 6.3v with up to 8v protection.
the max8903b internally block current from the battery and system back to the dc and usb inputs when no input supply is present. other features include prequal charging and timer, fast charge timer, overvoltage protection, charge status and fault outputs, power-ok monitors, and a battery thermistor monitor. in addition, on-chip thermal limiting reduces battery charge rate and ac adapter current to prevent charger overheating. the max8903b is available in a 4mm x 4mm, 28-pin thin qfn package.
efficient dc-dc converter eliminates heat 4mhz switching for tiny external components instant on—works with no battery or low battery dual current-limiting input circuits—ac adapter or usb automatic adapter/usb/battery switchover to support load transients 50mω system-to-battery switch supports usb spec thermistor monitor integrated current-sense resistor no external mosfets or diodes 4.1v to 16v input operating voltage range 应用/使用
移动互联网设备
pda、掌上电脑和无线手持装置
个人导航设备
便携式多媒体播放器
智能蜂窝电话
typical operating circuit
cd4511数码管驱动接线图
手机信号放大器安装方法_手机信号放大器辐射
MTK与高通的过招 骁龙845一击决胜
OPPO Find X2采用120Hz“超感屏”，支持120Hz ColorOS 7动画
印度发“粪”图强 制造牛粪灯、牛粪芯片...
MAX8903B 2A 1节Li+电池DC-DC充电器，用于
为什么Dc对于决定麦克风放置的位置很重要呢？
索尼Xperia 2曝光采用了带鱼屏设计和位于电源键上方的侧边指纹
闲话Zynq UltraScale+ MPSoC（连载4）
全国首例网约车交通事故宣判结果：交强险平台及司机均有责任
科士达助力企业跑出数据中心建设加速度
AMD正式发布了第三代AM4接口的Ryzen 3000系列笔记本电脑
Maxim最新推出立体声D类放大器--MAX98300/MA
光伏产业:埋伏未来
PI如何利用组合技术，优化中功率开关电源的设计和成本
小米6、iPhone6和OPPOR9S谁更好,都是2500你会选择谁？
集优化功率控制和简化应用于一体的新一代步进电机驱动器
2010年英特尔杯大学生嵌入式设计大赛开锣
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Arm笃定服务器市场，定制化芯片构建基础设施的未来