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500mA、低电压、线性稳压器,µMAX封装

低输入、输出电压线性稳压器,可输出高达500mA的电流,采用小尺寸µMAX封装

产品详情

主要特征

Parametric specs for Linear Regulators
VIN (V) (min) 2.25
VIN (V) (max) 5.5
Adj. VOUT (V) (min) 0.8
Adj. VOUT (V) (max) 4.5
Rated ILOAD (mA) 500
Preset VOUT (V) 0.8
1.5
1.8
2.5
3.3
# Regulators 1
VDROPOUT @Rated ILOAD (V) (typ) 0.17
ICC (µA) (max) 400
Output Voltage Noise (µV RMS) (typ) 300
Ref. Bypass No
Low Batt./ Pwr. Fail Out No
POK/Reset Thresh. (V) (nom) Vout-7%
Watchdog No
Reverse Batt. Protect. No
Oper. Temp. (°C) -40 to +85
Package/Pins UMAX/8
Budgetary
Price (See Notes)
1.68
缩小

简化框图

Technical Docs

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参量

Parametric specs for Linear Regulators
VIN (V) (min) 2.25
VIN (V) (max) 5.5
Adj. VOUT (V) (min) 0.8
Adj. VOUT (V) (max) 4.5
Rated ILOAD (mA) 500
Preset VOUT (V) 0.8
1.5
1.8
2.5
3.3
# Regulators 1
VDROPOUT @Rated ILOAD (V) (typ) 0.17
ICC (µA) (max) 400
Output Voltage Noise (µV RMS) (typ) 300
Ref. Bypass No
Low Batt./ Pwr. Fail Out No
POK/Reset Thresh. (V) (nom) Vout-7%
Watchdog No
Reverse Batt. Protect. No
Oper. Temp. (°C) -40 to +85
Package/Pins UMAX/8
Budgetary
Price (See Notes)
1.68

主要特征

  • Guaranteed 500mA Output Current
  • Output Down to 0.8V
  • Low 175mV Dropout at 500mA
  • ±1% Output Voltage Accuracy
    • Preset at 0.8V, 1.5V, 1.8V, 2.5V, or 3.3V
    • Adjustable from 0.8V to 4.5V
  • Power-OK Output
  • Low 210µA Ground Current
  • 0.02µA Shutdown Current
  • Thermal Overload Protection
  • Output Current Limit
  • Tiny 1.3W, 8-Pin Power-µMAX Package
  • -40°C to +85°C Temperature Range

应用/用途

  • 蜂窝电话/无绳电话
  • 坞站
  • 笔记本电脑
  • 掌上电脑
  • PDA
  • USB集线器
  • 无线基站

描述

The MAX1806 low-dropout linear regulator operates from a +2.25V to +5.5V supply and delivers a guaranteed 500mA load current with low 175mV dropout. The high-accuracy (±1%) output voltage is preset at an internally trimmed voltage (see Selector Guide) or can be adjusted from +0.8V to +4.5V with an external resistive-divider.

An internal PMOS pass transistor allows low 210µA supply current, making this device ideal for portable equipment such as personal digital assistants (PDAs), cellular phones, cordless phones, and other equipment, including base stations and docking stations.

Other features include an active-low, power-OK output that indicates when the output is out of regulation, a 0.02µA shutdown mode, short-circuit protection, and thermal shutdown protection. The MAX1806 comes in a miniature 1.3W, 8-pin power-µMAX® package with a metal pad on the underside of the package.

简化框图

MAX1806:典型工作电路 MAX1806: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

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