RT9907应用电路及参数资料
rt9907应用电路及参数资料
3 channel dc/dc converters ic with high-efficiency step-up and step-down
the rt9907 is a three channel power-supply solution for digital still cameras and other battery-powered devices. it integrates an asynchronous step-up and two synchronous step-down dc-dc converters. the rt9907 is targeted for applications that use two aa cells or a single lithium-ion battery.
features
• 1.5v to 5.5v battery input voltage range
• main step-up dc-dc converter
► 1.5v to 5.5v adjustable output voltage
► up to 90% efficiency
► 2.6a, 0.3w internal power switch
• two step-down dc-dc converters
► 0.8v to 5.5v adjustable output voltage
► 94% efficiency
► 100% duty cycle
• up to 1.4mhz switching frequency
• 1ua supply current in shutdown mode
• programmable soft start function
• independent enable pin (ch1, ch2, ch3)
• external compensation network (ch1, ch2, ch3)
• short circuit protection (ch1, ch2, ch3)
• over voltage protection (ch2)
• 24-lead vqfn package
• rohs compliant and 100% lead (pb)-free
application
• digital still camera
• pdas
• portable device
typical applications circuit
1-cell li+ battery 3.4v to 4.2v
figure 1. typical application circuit for 1-cell li+ battery
2-aa battery 1.8v to 3.2v
figure 2. typical application circuit for 2-aa battery supply
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RT9907应用电路及参数资料
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物联网转型 云边融合助推AI+IoT落地
3 channel dc/dc converters ic with high-efficiency step-up and step-down
the rt9907 is a three channel power-supply solution for digital still cameras and other battery-powered devices. it integrates an asynchronous step-up and two synchronous step-down dc-dc converters. the rt9907 is targeted for applications that use two aa cells or a single lithium-ion battery.
features
• 1.5v to 5.5v battery input voltage range
• main step-up dc-dc converter
► 1.5v to 5.5v adjustable output voltage
► up to 90% efficiency
► 2.6a, 0.3w internal power switch
• two step-down dc-dc converters
► 0.8v to 5.5v adjustable output voltage
► 94% efficiency
► 100% duty cycle
• up to 1.4mhz switching frequency
• 1ua supply current in shutdown mode
• programmable soft start function
• independent enable pin (ch1, ch2, ch3)
• external compensation network (ch1, ch2, ch3)
• short circuit protection (ch1, ch2, ch3)
• over voltage protection (ch2)
• 24-lead vqfn package
• rohs compliant and 100% lead (pb)-free
application
• digital still camera
• pdas
• portable device
typical applications circuit
1-cell li+ battery 3.4v to 4.2v
figure 1. typical application circuit for 1-cell li+ battery
2-aa battery 1.8v to 3.2v
figure 2. typical application circuit for 2-aa battery supply
手机屏幕失灵应该如何解决
EMC产生的条件_为何要做EMC设计
Banias处理器
使用workvisual软件对KR C4进行外部轴配置
芯教程|平头哥助力昊芯HX2000系列芯片专题SCI串口通讯奇偶校验(二)SCI增强FIFO
RT9907应用电路及参数资料
芯科科技光模块利器预置I2C Bootloader功能
大疆车载融资计划已启动，接连获得比亚迪和一汽集团投资意向
贸泽电子即日起备货Laird Connectivity的BL653系列模块
二线接近开关接线图解
苹果今年上半年要大幅扩产：iPhone 11/SE继续服役降价
ZETAOTA提供远程升级服务 提高实用性
便携式SSD KE31不仅传输速度快 容量更是高达960GB
苹果折叠屏加速但MacBook和iPad折叠屏在2024年推出的可能性极小
区块链技术如何改变美容行业
用12V的DC电源，如何设计照明“壁灯”
中国量子计算机迎来里程碑式的突破
华为携手LG U+在韩国首尔完成5G预商用网络测试
麻省理工工程师利用碳纳米管制成一种小型传感器 可嵌入到植物叶子中以修复损伤或击退昆虫等天敌
物联网转型 云边融合助推AI+IoT落地