收藏本站
?
?
Hardware Reference Manual for i.MX53 Quick Start
?
?
5.2.2.
Li ‐ ION   Battery   Charging  
?
The ? Dialog ? PMIC ? contains ? a ? fully ? autonomous ? Li ‐ ION ? battery ? charger. ? When ? wall ? power ? is ? first ? applied ? to ?
the ? Quick ? Start ? board, ? the ? PMIC ? will ? begin ? to ? apply ? a ? pre ‐ charge ? to ? the ? positive ? battery ? terminal. ? If ? the ?
PMIC ? senses ? a ? fully ? discharged ? battery ? or ? a ? fault ? condition ? (eg, ? no ? battery), ? the ? PMIC ? will ? disconnect ?
VDDOUT ? from ? the ? battery ? and ? allow ? the ? regulators ? to ? receive ? power ? independent ? what ? is ? attached ? to ?
VBAT. ? The ? footprints ? for ? testing ? with ? a ? battery ? were ? included ? for ? skilled ? developers ? looking ? to ?
experiment. ? As ? manufactured, ? the ? Quick ? Start ? board ? does ? not ? support ? Li_ION ? battery ? operations ?
without ? modifications ? by ? the ? developer. ?
?
If ? the ? PMIC ? senses ? the ? battery ? voltage ? above ? the ? BAT_FAULT ? threshold ? for ? 40 ? msec, ? the ? PMIC ? will ? then ?
begin ? a ? fast ? linear ? charge ? of ? the ? Li ‐ ION ? battery ? by ? controlling ? the ? voltage ? on ? VDDOUT. ? If ? the ? PMIC ? is ?
unable ? to ? increase ? VDDOUT ? above ? VBAT ? to ? continue ? charging ? the ? battery, ? the ? PMIC ? has ? an ? alternate ?
current ? charging ? method ? using ? an ? active ? diode. ? Charging ? will ? continue ? until ? the ? battery ? voltage ? reaches ?
the ? programmed ? level. ? The ? Li ‐ ION ? charging ? circuit ? also ? makes ? use ? of ? a ? temperature ? sensor ? (thermistor) ?
attached ? to ? the ? body ? of ? the ? battery. ? If ? the ? resulting ? voltage ? measurement ? at ? TBAT ? falls ? outside ? the ?
threshold ? value ? programmed ? into ? the ? registry ? settings, ? the ? PMIC ? will ? suspend ? the ? charging ? current ? until ?
the ? battery ? temperature ? reduces ? back ? to ? with ? the ? threshold ? values. ? See ? the ? Dialog ? PMIC ? datasheet ? for ? a ?
more ? detailed ? explanation. ?
?
The ? PMIC ? is ? initially ? programmed ? with ? default ? settings ? to ? charge ? most ? Li ‐ ION ? batteries. ? These ? settings ?
may ? be ? changed ? by ? software ? and ? the ? software ? documentation ? should ? be ? consulted ? for ? actually ? PMIC ?
registry ? values. ? These ? values ? can ? be ? changed ? in ? software ? as ? the ? developer ? sees ? fit. ? For ? more ? detailed ?
information ? on ? how ? the ? battery ? charging ? function ? works ? and ? how ? to ? change ? default ? charging ?
parameters. ? Since ? the ? 5V ? power ? pin ? of ? the ? USB ? micro ‐ B ? connector ? is ? not ? connected ? to ? the ? PMIC, ? all ?
discussion ? concerning ? battery ? charge ? current ? limits ? due ? to ? exceeding ? the ? USB ? standards ? do ? not ? apply ? to ?
the ? Quick ? Start ? board. ?
?
In ? designing ? a ? board ? using ? the ? Dialog ? PMIC, ? it ? is ? important ? to ? include ? a ? capacitor ? of ? 47 ? uF ? or ? greater ?
attached ? to ? the ? VBAT ? pin ? if ? any ? operations ? are ? planned ? without ? a ? Li ‐ ION ? battery. ? If ? during ? the ? initial ? pre ‐
charge ? phase, ? the ? Dialog ? PMIC ? does ? not ? sense ? any ? voltage ? present ? when ? the ? pre ‐ charge ? voltage ? is ?
momentarily ? removed ? and ? VBAT ? voltage ? is ? measured, ? the ? PMIC ? will ? assume ? a ? massive ? board ? failure ? and ?
will ? not ? supply ? any ? voltage ? via ? the ? regulators. ?
?
5.2.3.
Backlight   LED   Driver  
?
The ? Dialog ? PMIC ? provides ? a ? Boost ? circuit ? which ? controls ? an ? external ? MOSFET ? Q8. ? The ? PMIC ? is ? capable ? of ?
driving ? 3 ? independent ? strings ? of ? up ? to ? 5 ? white ? LEDs ? each ? with ? a ? voltage ? of ? approximately ? 24 ? Volts ? and ? a ?
maximum ? of ? 50 ? mA. ? The ? Quick ? Start ? board ? does ? not ? have ? a ? direct ? connection ? for ? white ? backlight ? LEDs, ?
but ? does ? supply ? one ? connection ? to ? the ? Expansion ? Port ? that ? can ? be ? used ? to ? support ? an ? attached ? LCD ?
Daughter ? Card. ? The ? Expansion ? Port ? uses ? the ? LED1_IN ? port ? of ? the ? PMIC. ?
? ?
Freescale Semiconductor
Hardware User Guide for i.MX53 Quick Start Board,
Preliminary Rev 0.91
35
PUBI – Public Use Business Information ?
发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

*型号 *数量 厂商 批号 封装
添加更多采购

我的联系方式

*
*
*
相关PDF资料
MCM69C432TQ20 IC CAM 1MB 50MHZ 100LQFP
MCP1401T-E/OT IC MOSFET DRVR INV 500MA SOT23-5
MCP1403T-E/MF IC MOSFET DRIVER 4.5A DUAL 8DFN
MCP1406-E/SN IC MOSFET DVR 6A 8SOIC
MCP14628T-E/MF IC MOSFET DVR 2A SYNC BUCK 8-DFN
MCP14700T-E/MF IC MOSFET DRIVER HIGH/LOW 8DFN
MCP14E3T-E/MF IC MOSFET DVR 4.0A DUAL 8DFN
MCP14E6T-E/MF IC MOSFET DRIVER 2A 8DFN-S
相关代理商/技术参数
MCIMX53-START-R 制造商:Freescale Semiconductor 功能描述:DEV KIT I.MX53 1GHZ ARM CORTEX A8 制造商:Freescale Semiconductor 功能描述:I.MX53, WITH PMIC, QUICK START BOARD 制造商:Freescale Semiconductor 功能描述:I.MX53, WITH PMIC, QUICK START BOARD; Silicon Manufacturer:Freescale; Core Architecture:ARM; Core Sub-Architecture:Cortex-A8; Silicon Core Number:i.MX53; Silicon Family Name:i.MX53; Kit Contents:Processor, PMIC, microSD, Power ;RoHS Compliant: No
MCIMX53XA 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:i.MX53xA Automotive and Infotainment Applications Processors
MCIMX53XD 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:i.MX53xD Applications Processors for Consumer Products
MCIMX6 SOLO 制造商:RIOTBOARD 功能描述:I.MX6 GC2000 CORTEX A9 DEV BOARD 制造商:RIOTBOARD 功能描述:RIOT BOARD DEVELOPMENT PLATFORM
MCIMX6 SOLO 制造商:RIOTBOARD 功能描述:Freescale i.MX6Solo community board
MCIMX6D4AVT08AC 功能描述:处理器 - 专门应用 i.MX6D AUTO RoHS:否 制造商:Freescale Semiconductor 类型:Multimedia Applications 核心:ARM Cortex A9 处理器系列:i.MX6 数据总线宽度:32 bit 最大时钟频率:1 GHz 指令/数据缓存: 数据 RAM 大小:128 KB 数据 ROM 大小: 工作电源电压: 最大工作温度:+ 95 C 安装风格:SMD/SMT 封装 / 箱体:MAPBGA-432
MCIMX6D4AVT08ACR 功能描述:处理器 - 专门应用 i.MX6D AUTO RoHS:否 制造商:Freescale Semiconductor 类型:Multimedia Applications 核心:ARM Cortex A9 处理器系列:i.MX6 数据总线宽度:32 bit 最大时钟频率:1 GHz 指令/数据缓存: 数据 RAM 大小:128 KB 数据 ROM 大小: 工作电源电压: 最大工作温度:+ 95 C 安装风格:SMD/SMT 封装 / 箱体:MAPBGA-432
MCIMX6D4AVT08ACR2 制造商:Freescale Semiconductor 功能描述:MCIMX6D4AVT08ACR2 - Tape and Reel
    • 我