MAX8874R, MAX8874S, MAX8874T

低压差、120mA线性稳压器


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说明

The MAX8873T/S/R and MAX8874T/S/R low-dropout linear regulators operate from a +2.5V to +6.5V input range and deliver up to 120mA. A PMOS pass transistor allows the low, 82µA supply current to remain independent of load, making these devices ideal for battery-operated portable equipment such as cellular phones and cordless phones.

The devices feature Dual Mode operation: their output voltage is preset (at 3.15V for the T versions, 2.84V for the S versions, or 2.80V for the R versions) or can be adjusted with an external resistor divider. Total error on the output is ±3.5%. Output voltages are set on the low side of popular ranges so that power drain is minimized for longer battery life. Other features include low-power shutdown, short-circuit protection, thermal shutdown protection, and reverse battery protection. The MAX8874 also includes an auto-discharge function, which actively discharges the output voltage to ground when the device is placed in shutdown mode. Both devices come in a miniature 5-pin SOT23 package.

For dual versions, refer to the MAX8865/MAX8866 data sheet. For low-noise versions with 30µVRMS output noise, refer to the MAX8877/MAX8878.

MAX8873R、MAX8873S、MAX8873T、MAX8874R、MAX8874S、MAX8874T:典型工作电路 MAX8873R、MAX8873S、MAX8873T、MAX8874R、MAX8874S、MAX8874T:典型工作电路 放大+

关键特性

  • LP2980 Pin-Compatible SOT23 Package
  • Low, 55mV Dropout Voltage at 50mA IOUT (130mV at 120mA)
  • Low, 73µA No-Load Supply Current
  • Low, 82µA Operating Supply Current (even in dropout)
  • Miniature External Components
  • Thermal Overload Protection
  • Output Current Limit
  • Reverse Battery Protection
  • Dual Mode Operation: Fixed or Adjustable (1.25V to 6.5V) Output
  • Low-Power Shutdown

应用

  • 音频系统
  • 无绳电话
  • 电子规划器
  • 手持式仪表(PDA、掌上电脑)
  • 调制解调器
  • 掌上电脑
  • PCMCIA卡
  • PCS电话

请查看具体的参数规格 Linear Regulators (134)


Part NumberRegulatorsVIN
(V)
VIN
(V)
Preset 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
minmaxtypmaxtypSee Notes
MAX8873 12.56.5
2.8
2.84
3.15
0.13120120150220NoNoNoYes-40 to +85
SOT23/5
$0.75 @1k
MAX8874 
SOT23/5

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。
产品可靠性报告: MAX8874R.pdf 
申请可靠性报告: MAX8874S  MAX8874T 
型号   生产流程   工艺   样本量   不合格   FIT @ 25°C   FIT @ 55°C   Material Composition  

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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