电子发烧友App
创作
发文章
发帖 
提问 
发资料
发视频资料介绍
The MAX17085B is an all-in-one notebook power solution integrating a multichemistry battery charger, dual fixed output Quick-PWM™ step-down controllers, and dual keep-alive linear regulators:
- Charger: The high-frequency (~1.4MHz) multichemistry battery charger uses a current-mode, fixed inductor current ripple architecture that significantly reduces component size and cost. Low-offset sense amplifiers allow the use of low-value sense resistors for charging and input current limit.
The charger uses n-channel switching MOSFETs. Adjustable charge current, charge voltage, and cell selection allow for flexible use with different battery packs. Charge current is set by an analog control input, or a PWM input. High-accuracy current-sense amplifiers provide fast cycle-by-cycle current-mode control to protect against short circuits to the battery and respond quickly to system load transients. Additionally, the charger provides a high-accuracy analog output that is proportional to the adapter current.
An integrated charge pump controls an n-channel adapter selector switch. The charge pump remains active even when the charger is off. When the adapter is absent, a p-channel MOSFET selects the battery.
- Main SMPS: The dual Quick-PWM step-down controllers with synchronous rectification generate the 5V and 3.3V main power in a notebook. Low-side MOSFET sensing provides a simple low-cost, highly efficient valley current-limit protection. The MAX17085B also includes output undervoltage, output overvoltage, and thermal-fault protection.
Separate enable inputs for each SMPS and a combined open-drain power-good output allow flexible power sequencing. Voltage soft-start reduces inrush current, while passive shutdown discharges the output through an internal switch. Fast transient response, with an extended on-time feature reduces output capacitance requirements. Selectable pulse-skipping mode and ultrasonic mode improve light-load efficiency. Ultrasonic mode operation maintains a minimum switching frequency at light loads, minimizing audible noise effects.
- Dual LDO Regulators: An internal 5V/100mA LDO5 with switchover can be used to either generate the 5V bias needed for power-up or other lower power "always-on" suspend supplies. Another 3.3V/50mA LDO3 provides "always-on" power to a system microcontroller.
下载该资料的人也在下载
下载该资料的人还在阅读
更多 >
- 美信一体化电源方案MAX17085B的datasheet 24次下载
- HM72B pdf,datasheet
- MAX4952,MAX4952B,pdf (Dual 1.5
- AIC1952 datasheet,pdf(Dual Out
- MAX6033 datasheet pdf
- MAX8896,pdf datasheet (Dual PW
- MAX9312,pdf datasheet (Dual 1:
- MAX9979,pdf datasheet (Dual 1.
- MAX130, MAX131 pdf datasheet (
- MAX5963 pdf datasheet (Dual, 7
- MAX9928, MAX9929 pdf datasheet
- MAX2361, MAX2363, MAX2365 pdf
- MAX516 pdf datasheet
- MAX514 pdf datasheet
- 2SA1006B pdf datasheet
- 如何并联监测多个MAX15090B/C热插拔IC的总电流 503次阅读
- 如何为MAX15090B/MAX15090C增加反向电流用于集成FET应用的热插拔 566次阅读
- 如何测量MAX38902A/MAX38902B的电源抑制比 1322次阅读
- JESD204B学习手册 2282次阅读
- MAX25024汽车背光驱动器如何符合ASIL-B功能安全要求 1307次阅读
- 分享一个快速阅读datasheet的方法 2311次阅读
- 电源转换器MAX17498A / B / C的性能特点及应用范围 2218次阅读
- 基于MAX5941电源芯片实现48V电源转换电路的设计 3556次阅读
- 如何阅读Datasheet，是作为电子工程师的必备技能！ 7837次阅读
- MAX2820/MAX2821收发器的应用电路图和技术特点 1719次阅读
- AD9如何简单快速的制作出原理图符号 7441次阅读
- MAX232引脚图功能应用电路 MAX232中文资料PDF数据手册下载 1.4w次阅读
- MAX706s_MAX706SESA_MAX706TESA_MAX706PA中文资料PDF英文Datasheet数据手册 5133次阅读
- MAXIM 电池充电解决方案 3829次阅读
- MAX5970应用电路 2656次阅读
上传资料赚积分下载排行
本周
- 1TC358743XBG评估板参考手册
- 1.36 MB | 330次下载 | 免费
- 2开关电源基础知识
- 5.73 MB | 11次下载 | 免费
- 3嵌入式linux-聊天程序设计
- 0.60 MB | 3次下载 | 免费
- 4DIY动手组装LED电子显示屏
- 0.98 MB | 3次下载 | 免费
- 5基于FPGA的C8051F单片机开发板设计
- 0.70 MB | 2次下载 | 免费
- 651单片机窗帘控制器仿真程序
- 1.93 MB | 2次下载 | 免费
- 751单片机PM2.5检测系统程序
- 0.83 MB | 2次下载 | 免费
- 8基于51单片机的RGB调色灯程序仿真
- 0.86 MB | 2次下载 | 免费
本月
- 1OrCAD10.5下载OrCAD10.5中文版软件
- 0.00 MB | 234315次下载 | 免费
- 2555集成电路应用800例(新编版)
- 0.00 MB | 33566次下载 | 免费
- 3接口电路图大全
- 未知 | 30323次下载 | 免费
- 4开关电源设计实例指南
- 未知 | 21549次下载 | 免费
- 5电气工程师手册免费下载(新编第二版pdf电子书)
- 0.00 MB | 15349次下载 | 免费
- 6数字电路基础pdf(下载)
- 未知 | 13750次下载 | 免费
- 7电子制作实例集锦 下载
- 未知 | 8113次下载 | 免费
- 8《LED驱动电路设计》 温德尔著
- 0.00 MB | 6656次下载 | 免费
总榜
- 1matlab软件下载入口
- 未知 | 935054次下载 | 免费
- 2protel99se软件下载(可英文版转中文版)
- 78.1 MB | 537798次下载 | 免费
- 3MATLAB 7.1 下载 (含软件介绍)
- 未知 | 420027次下载 | 免费
- 4OrCAD10.5下载OrCAD10.5中文版软件
- 0.00 MB | 234315次下载 | 免费
- 5Altium DXP2002下载入口
- 未知 | 233046次下载 | 免费
- 6电路仿真软件multisim 10.0免费下载
- 340992 | 191186次下载 | 免费
- 7十天学会AVR单片机与C语言视频教程 下载
- 158M | 183279次下载 | 免费
- 8proe5.0野火版下载(中文版免费下载)
- 未知 | 138040次下载 | 免费
工商网监
评论