General Description
The MAX1963A/MAX1976A low-dropout linear regula-
tors 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.
Applications
Notebook/Handheld Computers
Cellular/Smart/PDA Phones
DSC, CD/MP3 Players
PCMCIA Cards
Features
o Low 1.62V Minimum Input Voltage
o Guaranteed 300mA Output Current
o ±2.5% Accuracy Over Load/Line/Temp
o Low 100mV Dropout at 300mA Load
o 2.2ms (MAX1963A) or 70ms (MAX1976A)
RESET Output Flag
o Supply Current Independent of Load and
Dropout Voltage
o Logic-Controlled Shutdown
o Thermal-Overload and Short-Circuit Protection
o Preset Output Voltages (0.75V to 3.0V)
o Tiny 6-Pin Thin SOT23 Package (<1.1mm High)
o TDFN Package (<0.8mm High)
MAX1963A/MAX1976A
Low-Input-Voltage, 300mA LDO Regulators
with
RESET
in SOT and TDFN
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Maxim Integrated Products
1
Ordering Information
19-3684; Rev 1; 5/12
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
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