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Low-Input-Voltage, 500mA LDO Regulator with Active-Low RESET in SOT and TDFN

Product Details

Key Features

Parametric specs for Linear Regulators
VIN (V) (min) 1.62
VIN (V) (max) 3.6
Rated ILOAD (mA) 500
Preset VOUT (V) 1
3
# Regulators 1
VDROPOUT @Rated ILOAD (V) (typ) 0.175
ICC (µA) (max) 140
Output Voltage Noise (µV RMS) (typ) 86
Ref. Bypass No
Low Batt./ Pwr. Fail Out No
POK/Reset Thresh. (V) (nom) Vout-17.5%
Watchdog No
Reverse Batt. Protect. No
Oper. Temp. (°C) -40 to +85
Package/Pins TDFN/6
TSOT/6
Budgetary
Price (See Notes)
1.31
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Simplified Block Diagram

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Parameters

Parametric specs for Linear Regulators
VIN (V) (min) 1.62
VIN (V) (max) 3.6
Rated ILOAD (mA) 500
Preset VOUT (V) 1
3
# Regulators 1
VDROPOUT @Rated ILOAD (V) (typ) 0.175
ICC (µA) (max) 140
Output Voltage Noise (µV RMS) (typ) 86
Ref. Bypass No
Low Batt./ Pwr. Fail Out No
POK/Reset Thresh. (V) (nom) Vout-17.5%
Watchdog No
Reverse Batt. Protect. No
Oper. Temp. (°C) -40 to +85
Package/Pins TDFN/6
TSOT/6
Budgetary
Price (See Notes)
1.31

Key Features

  • Low 1.62V Minimum Input Voltage
  • Guaranteed 500mA Output Current
  • ±0.5% Initial Accuracy
  • Low 175mV Dropout at 500mA Load
  • 70ms Active-Low RESET Output Flag
  • Supply Current Independent of Load and Dropout Voltage
  • Logic-Controlled Shutdown
  • Thermal-Overload and Short-Circuit Protection
  • Preset Output Voltages (0.75V, 1.0V, 1.3V, 1.5V, 1.8V, 2.5V, and 3.0V)
  • Tiny 6-Pin Thin SOT23 Package (< 1.1mm High)
  • Thin 6-Pin TDFN Package (< 0.8mm High)

Applications/Uses

  • CD and MP3 Players
  • Cellular and PCS Phones
  • Digital Still Cameras
  • Handheld Computers
  • Notebook Computers
  • PCMCIA Cards
  • Personal Digital Assistants (PDAs)

Description

The MAX1589A low-dropout linear regulator operates from a +1.62V to +3.6V supply and delivers a guaranteed 500mA continuous load current with a low 175mV dropout. The high-accuracy (±0.5%) output voltage is preset to internally trimmed voltages from +0.75V to +3.0V. An active-low, open-drain reset output remains asserted for at least 70ms after the output voltage reaches regulation. This device is offered in 6-pin thin SOT23 and 6-pin, 3mm x 3mm thin DFN packages.

An internal pMOS pass transistor maintains low supply current, independent of load and dropout voltage, making the MAX1589A ideal for portable battery-powered equipment such as personal digital assistants (PDAs), digital still cameras, cell phones, cordless phones, and notebook computers. Other features include logic-controlled shutdown, short-circuit protection, and thermal-overload protection.

Simplified Block Diagram

MAX1589A: Typical Operating Circuit MAX1589A: Typical Operating Circuit Zoom icon

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .

Sampling:
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.