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Low-Input-Voltage, 300mA LDO Regulators with 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) 300
Preset VOUT (V) 1
3
# Regulators 1
VDROPOUT @Rated ILOAD (V) (typ) 0.1
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
TDFN/8
TSOT/6
Budgetary
Price (See Notes)
1.91
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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) 300
Preset VOUT (V) 1
3
# Regulators 1
VDROPOUT @Rated ILOAD (V) (typ) 0.1
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
TDFN/8
TSOT/6
Budgetary
Price (See Notes)
1.91

Key Features

  • Low 1.62V Minimum Input Voltage
  • Guaranteed 300mA Output Current
  • ±2.5% Accuracy Over Load/Line/Temp
  • Low 100mV Dropout at 300mA Load
  • 2.2ms (MAX1963A) or 70ms (MAX1976A) 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 to 3.0V)
  • Tiny 6-Pin Thin SOT23 Package (< 1.1mm High)
  • TDFN Package (< 0.8mm High)

Applications/Uses

  • Cellular/Smart/PDA Phones
  • DSC, CD/MP3 Players
  • Notebook/Handheld Computers
  • PCMCIA Cards

Description

The MAX1963A/MAX1976A low-dropout linear regulators operate from a +1.62V to +3.6V supply and deliver a guaranteed 300mA continuous load current with a low 100mV dropout. The high-accuracy (±0.5%) output voltage is preset to an internally trimmed voltage in the +0.75V to +3.0V range. An active-low, open-drain reset output remains asserted for at least 2.2ms (MAX1963A) or 70ms (MAX1976A) after the output voltage reaches regulation. These devices are offered in thin SOT23 and thin DFN packages. An internal pMOS pass transistor allows the low supply current to remain independent of load and dropout voltage, making these devices ideal for portable battery-powered equipment.

Simplified Block Diagram

MAX1963A, MAX1976A: Typical Operating Circuit MAX1963A, MAX1976A: 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 .