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MAX8873R, MAX8873S, MAX8873T

低压差、120mA线性稳压器

产品详情

主要特征

应用/用途

Parametric specs for Linear Regulators
VIN (V) (min) 2.5
VIN (V) (max) 6.5
Rated ILOAD (mA) 120
Preset VOUT (V) 2.8
2.84
3.15
# Regulators 1
VDROPOUT @Rated ILOAD (V) (typ) 0.13
ICC (µA) (max) 150
Output Voltage Noise (µV RMS) (typ) 220
Ref. Bypass No
Low Batt./ Pwr. Fail Out No
Watchdog No
Reverse Batt. Protect. Yes
Oper. Temp. (°C) -40 to +85
Package/Pins SOT23/5
Budgetary
Price (See Notes)
0.8
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简化框图

技术文档

数据资料 低压差、120mA线性稳压器 Apr 23, 2013

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参量

主要特征

  • 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/用途

  • 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

描述

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.

简化框图

MAX8873R、MAX8873S、MAX8873T、MAX8874R、MAX8874S、MAX8874T:典型工作电路 MAX8873R、MAX8873S、MAX8873T、MAX8874R、MAX8874S、MAX8874T:典型工作电路 Zoom icon

技术文档

数据资料 低压差、120mA线性稳压器 Apr 23, 2013

支持和培训

在Maxim的知识库中搜索技术问题的答案

过滤搜索

Maxim的专业工程师团队也会为您解答相应的技术问题,请访问Maxim的 支持中心