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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

产品详情

主要特征

Parametric specs for Linear Regulators
VIN (V) (min) 2.5
VIN (V) (max) 5.5
Adj. VOUT (V) (min) 1.25
Adj. VOUT (V) (max) 5
Rated ILOAD (mA) 500
Preset VOUT (V) 5
# Regulators 1
VDROPOUT @Rated ILOAD (V) (typ) 0.13
ICC (µA) (max) 250
Output Voltage Noise (µV RMS) (typ) 115
Ref. Bypass No
Low Batt./ Pwr. Fail Out No
Watchdog No
Reverse Batt. Protect. No
Oper. Temp. (°C) -40 to +85
Package/Pins UMAX/8
Budgetary
Price (See Notes)
1.28
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参量

Parametric specs for Linear Regulators
VIN (V) (min) 2.5
VIN (V) (max) 5.5
Adj. VOUT (V) (min) 1.25
Adj. VOUT (V) (max) 5
Rated ILOAD (mA) 500
Preset VOUT (V) 5
# Regulators 1
VDROPOUT @Rated ILOAD (V) (typ) 0.13
ICC (µA) (max) 250
Output Voltage Noise (µV RMS) (typ) 115
Ref. Bypass No
Low Batt./ Pwr. Fail Out No
Watchdog No
Reverse Batt. Protect. No
Oper. Temp. (°C) -40 to +85
Package/Pins UMAX/8
Budgetary
Price (See Notes)
1.28

主要特征

  • 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/用途

  • 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

描述

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.

简化框图

MAX1792:典型工作电路 MAX1792: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