AAT3220
150mA NanoPower™ LDO Linear Regulator
™
PowerLinear
General Description
Features
The AAT3220 PowerLinear™ NanoPower Low
Dropout Linear Regulator is ideal for portable appli-
cations where extended battery life is critical. This
device features extremely low quiescent current
which is typically 1.1µA. Dropout voltage is also
very low, typically less than 225mV at the maxi-
mum output current of 150mA. The AAT3220 has
output short circuit and over current protection. In
addition, the device also has an over temperature
protection circuit, which will shutdown the LDO reg-
ulator during extended over current events.
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1.1 µA Quiescent Current
Low Dropout: 200 mV (typ)
Guaranteed 150mA Output
High accuracy: 2.0ꢀ
Current limit protection
Over-Temperature protection
Low Temperature Coefficient
Factory programmed output voltages:
1.8V to 3.5V
Stable operation with virtually any output
capacitor type
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3-pin SOT-89 and SOT-23 packages
4kV ESD Rating
The AAT3220 is available in a space saving SOT-23
package or a SOT-89 for applications requiring
increased power dissipation. The device is rated
over a -40°C to 85°C temperature range. Since only
a small, 1µF ceramic output capacitor is required,
often the only space used is that occupied by the
AAT3220 itself. The AAT3220 is truly a compact and
cost effective voltage conversion solution.
Applications
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Cellular Phones
Notebook Computers
Portable Communication Devices
Handheld Electronics
Remote Controls
Digital Cameras
PDAs
The AAT3221/2 is a similar product for this appli-
cation, especially when a shutdown mode is
required for further power savings.
Typical Application
INPUT
OUTPUT
IN
OUT
AAT3220
GND
GND
GND
3220.2001.09.1.0
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