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低压差、300mA线性稳压器,SOT23封装

功率最高的300mA、低压差线性稳压器,薄型SOT23封装

产品详情

主要特征

Parametric specs for Linear Regulators
VIN (V) (min) 2.5
VIN (V) (max) 5.5
Rated ILOAD (mA) 300
Preset VOUT (V) 1.5
1.8
2.85
3.3
# Regulators 1
VDROPOUT @Rated ILOAD (V) (typ) 0.15
ICC (µA) (max) 100
Output Voltage Noise (µV RMS) (typ) 42
Ref. Bypass Yes
Low Batt./ Pwr. Fail Out No
Watchdog No
Reverse Batt. Protect. No
Oper. Temp. (°C) -40 to +85
Package/Pins TSOT/5
Budgetary
Price (See Notes)
0.93
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参量

Parametric specs for Linear Regulators
VIN (V) (min) 2.5
VIN (V) (max) 5.5
Rated ILOAD (mA) 300
Preset VOUT (V) 1.5
1.8
2.85
3.3
# Regulators 1
VDROPOUT @Rated ILOAD (V) (typ) 0.15
ICC (µA) (max) 100
Output Voltage Noise (µV RMS) (typ) 42
Ref. Bypass Yes
Low Batt./ Pwr. Fail Out No
Watchdog No
Reverse Batt. Protect. No
Oper. Temp. (°C) -40 to +85
Package/Pins TSOT/5
Budgetary
Price (See Notes)
0.93

主要特征

  • Guaranteed 300mA Output Current (500mA for Pulsed Loads)
  • Low 100mV Dropout at 200mA Load
  • POK Output (MAX8888)
  • 42µVRMS Output Noise (MAX8887)
  • Preset Output Voltages (1.5V, 1.8V, 2.85V, and 3.3V)
  • 55µA No-Load Supply Current
  • Thermal-Overload and Short-Circuit Protection
  • Foldback Output Current-Limit Protection
  • 60dB PSRR at 1kHz
  • 0.1µA Shutdown Current
  • Thin 5-Pin SOT23 Package, 1mm High

应用/用途

  • 数码相机
  • 手持式仪表(PDA、掌上电脑)
  • 笔记本电脑
  • PCMCIA卡
  • PDA与掌上电脑
  • 无线手机

描述

The MAX8887/MAX8888 low-dropout linear regulators operate from a 2.5V to 5.5V input and deliver up to 300mA continuous (500mA pulsed) current. The MAX8887 is optimized for low-noise operation, while the MAX8888 includes an open-drain power-OK (POK) ouput flag. Both regulators feature exceptionally low 100mV dropout at 200mA. These devices are available in a variety of preset output voltages in the 1.5V to 3.3V range.

An internal PMOS pass transistor allows the low 55µA supply current to remain independent of load, making these devices ideal for portable battery-powered equipment such as personal digital assistants (PDAs), cellular phones, cordless phones, and notebook computers. Other features include a micropower shutdown mode, short-circuit protection, thermal shutdown protection, and an active-low open-drain POK output that indicates when the output is out of regulation. The MAX8887/MAX8888 are available in a thin 5-pin SOT23 package that is only 1mm high.

简化框图

MAX8887、MAX8888:典型工作电路 MAX8887、MAX8888:典型工作电路 Zoom icon

Technical Docs

支持和培训

在Maxim的知识库中搜索技术问题的答案

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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