MAX6476

300mA LDO线性稳压器,内置微处理器复位电路


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说明

MAX6469–MAX6484是低压差线性稳压器,具有完全集成的微处理器复位电路。它们均具有+1.5V至+3.3V预置输出电压,预置间隔100mV,并可提供最高300mA的负载电流。这些器件仅消耗82µA电源电流。低电源电流、低压差和集成的复位功能使这些器件非常适合电池供电的便携式设备。

MAX6469–MAX6484包含一个复位输出,用于指示稳压器输出是否跌落至标准微处理器电源容限以下(-7.5%或-12.5%标称输出电压),省去了外部微处理器监控电路,并保证电源电压和时钟振荡器在处理器使能之前达到稳定。这些器件提供推挽式或漏极开路、低电平有效复位输出,具有2.5ms、20ms、150ms或1200ms (最小值)超时周期。

MAX6469/MAX6470/MAX6473–MAX6478/MAX6481–MAX6484还具有关断功能,关断时电源电流降至0.1µA (典型值)。MAX6471–MAX6474/MAX6479–MAX6482提供手动复位输入,可在稳压器输出符合要求时触发微处理器复位。MAX6475/MAX6476/MAX6483/MAX6484具有远端反馈检测引脚,适合外接NPN晶体管的大电流应用。MAX6469–MAX6476采用6引脚SOT23封装和8引脚TDFN封装。MAX6477–MAX6484采用3 x 3裸片级封装(UCSP™)。所有器件均工作于-40°C至+85°C温度范围。
MAX6469、MAX6470、MAX6471、MAX6472、MAX6473、MAX6474、MAX6475、MAX6476、MAX6477、MAX6478、MAX6479、MAX6480、MAX6481、MAX6482、MAX6483、MAX6484:典型应用电路 MAX6469、MAX6470、MAX6471、MAX6472、MAX6473、MAX6474、MAX6475、MAX6476、MAX6477、MAX6478、MAX6479、MAX6480、MAX6481、MAX6482、MAX6483、MAX6484:典型应用电路 放大+

关键特性

  • 3 x 3 UCSP、6引脚SOT23或8引脚TDFN封装
  • +1.5V至+3.3V预置输出电压(预置间隔100mV)
  • SET引脚用于调节输出电压
  • 75µVRMS LDO输出电压噪声(MAX6477–MAX6484)
  • 整个工作温度范围内精度为±2.0%
  • 保证提供300mA输出电流
  • 低压差
    • 150mA时55mV
    • 300mA时114mV
  • 82µA电源电流,0.1µA关断电流
  • 反向输入电流保护、过热和短路防护
  • 微处理器复位信号,具有4种超时选项
  • 推挽式或漏极开路的/RESET输出
  • 手动复位输入
  • 远端反馈检测

应用

  • Bluetooth®模块/无线LAN
  • CD/DVD驱动
  • 蜂窝电话/无绳电话
  • 数码相机
  • 手持式仪表(PDA、掌上电脑)
  • 笔记本电脑
  • PCMCIA卡/USB设备
Part NumberRegulatorsVIN
(V)
VIN
(V)
Preset VOUT
(V)
Adj. VOUT
(V)
Adj. VOUT
(V)
VDROPOUT @Rated ILOAD
(V)
Rated ILOAD
(mA)
Rated ILOAD
(mA)
ICC
(µA)
Output Voltage Noise
(µV RMS)
Ref. BypassLow Batt./ Pwr. Fail OutPOK/Reset Thresh.
(V)
WatchdogReverse Batt. Protect.Oper. Temp.
(°C)
Package/PinsBudgetary
Price
minmaxminmaxtypmaxtypnomSee Notes
MAX6469 12.55.5
1.5
1.6
1.7
1.8
1.9
2
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.8
2.85
2.9
3
3.1
3.2
3.3
--0.11300300136150NoNo
Vout-12.5%
Vout-7.5%
NoNo-40 to +85
SOT23/6
TDFN/8
$2.39 @1k
MAX6470 --
SOT23/6
TDFN/8
-
MAX6471 --
SOT23/6
TDFN/8
-
MAX6472 --
SOT23/6
TDFN/8
-
MAX6473 --
SOT23/6
TDFN/8
-
MAX6474 --
TDFN/8
-
MAX6475 1.235
TDFN/8
-
MAX6476 1.235
SOT23/6
TDFN/8
-
查看所有Linear Regulators (145)
Pricing Notes:
价格仅供参考,用于同类产品的比较。所提供报价为美元,需要依汇率折合成人民币。该价格将因当地关税、税率和汇率而异。有关特定订购量和指定版本的报价和供货问题,请参考:价格与供货网站或与指定代理商联系。


MAX6470EVKIT: MAX6469、MAX6470、MAX6471、MAX6472、MAX6473、MAX6474、MAX6475、MAX6476评估板

质量和环境数据

产品可靠性报告: MAX6476.pdf 
无铅封装的锡(Sn)晶须报告

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  • 型号   生产流程   工艺   样本量   不合格   FIT @ 25°C   FIT @ 55°C  

    备注: 通过技术手段对故障率进行汇总,并映射到相关的材料部件号。 故障率与被测件的数量密切相关。

    质量管理体系 >
    环境管理体系 >

     
    Status:
    Package:
    Temperature:

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