MAX1792

500mA、低压差线性稳压器,µMAX封装

压差仅为130mV的0.5A LDO,采用耗散功率为1.3W的µMAX封装


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说明

The MAX1792 low-dropout linear regulator operates from a +2.5V to +5.5V supply and delivers a guaranteed 500mA load current with low 130mV dropout. The high-accuracy (±1%) output voltage is preset at an internally trimmed voltage (see Selector Guide) or can be adjusted from 1.25V to 5.0V with an external resistive divider.

An internal PMOS pass transistor allows the low 80µA supply current to remain independent of load, making this device ideal for portable battery-operated equipment such as personal digital assistants (PDAs), cellular phones, cordless phones, base stations, and notebook computers.

Other features include an active-low open-drain reset output with a 4ms timeout period that indicates when the output is out of regulation, a 0.1µA shutdown mode, short-circuit protection, and thermal shutdown protection. The device is available in a miniature 1.3W, 8-pin power-µMAX® package with a metal pad on the underside of the package.
MAX1792:典型工作电路 MAX1792:典型工作电路 放大+

关键特性

  • Guaranteed 500mA Output Current
  • Low 130mV Dropout at 500mA
  • Up to ±1% Output Voltage Accuracy
    • Preset at 1.5V, 1.8V, 2.5V, 3.3V, or 5.0V
    • Adjustable from 1.25V to 5.0V
  • Reset Output with 4ms Timeout Period
  • Low 80µA Ground Current
  • 0.1µA Shutdown Current
  • Thermal Overload Protection
  • Output Current Limit
  • Tiny 1.3W Power-µMAX Package

应用

  • 蜂窝电话/无绳电话
  • 坞站
  • 笔记本电脑
  • 掌上电脑
  • PDA及其它手持设备
  • USB集线器
  • 无线基站
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 OutWatchdogReverse Batt. Protect.Oper. Temp.
(°C)
Package/PinsBudgetary
Price
minmaxminmaxtypmaxtypSee Notes
MAX1792 12.55.5
1.5
1.8
2.5
3.3
5
1.2550.13500500250115NoNoNoNo-40 to +85
UMAX/8
$1.15 @1k
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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。

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。

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