AAT3220 Datasheet, PDF (8/16 Pages) Advanced Analogic Technologies – 150mA NanoPower™ LDO Linear Regulator

AAT3220
150mA NanoPower™ LDO Linear Regulator
Functional Block Diagram
IN
OUT
Over-Current
Protection
Over-Temp
Protection
V_REF
GND
Functional Description
The AAT3220 is intended for LDO regulator appli-
cations where output current load requirements
range from No Load to 150mA.
The advanced circuit design of the AAT3220 has
been optimized for minimum quiescent or ground
current consumption making it ideal for use in power
management systems for small battery operated
devices. The typical quiescent current level is just
1.1µA. The LDO also demonstrates excellent power
supply ripple rejection (PSRR) and load and line
transient response characteristics. The AAT3220 is
a truly high performance LDO regulator especially
well suited for circuit applications which are sensitive
to load circuit power consumption and extended bat-
tery life.
The LDO regulator output has been specifically
optimized to function with low cost, low ESR
ceramic capacitors. However, the design will allow
for operation with a wide range of capacitor types.
The AAT3220 has complete short circuit and thermal
protection. The integral combination of these two
internal protection circuits give the AAT3220 a com-
prehensive safety system to guard against extreme
adverse operating conditions. Device power dissi-
pation is limited to the package type and thermal dis-
sipation properties. Refer to the thermal considera-
tions section for details on device operation at max-
imum output load levels.
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3220.2001.09.1.0