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BYXYY Fiches technique(PDF) 1 Page - Advanced Analogic Technologies

No de pièce BYXYY
Description  150mA NanoPower??LDO Linear Regulator
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Fabricant  ANALOGICTECH [Advanced Analogic Technologies]
Site Internet  http://www.analogictech.com
Logo ANALOGICTECH - Advanced Analogic Technologies

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AAT3221/2
150mA NanoPower™ LDO Linear Regulator
PowerLinearTM
PRODUCT DATASHEET
3221.2007.11.1.12
1
www .analogictech.com
General Description
The AAT3221 and AAT3222 PowerLinear NanoPower low
dropout (LDO) linear regulators are ideal for portable
applications where extended battery life is critical.
These devices feature extremely low quiescent current,
typically 1.1μA. Dropout voltage is also very low, typi-
cally less than 200mV at the maximum output current of
150mA. The AAT3221/2 have an enable pin feature
which, when asserted, will enter the LDO regulator into
shutdown mode, removing power from its load and offer-
ing extended power conservation capabilities for portable
battery-powered applications.
The AAT3221/2 have output short-circuit and over-cur-
rent protection. In addition, the devices also have an
over-temperature protection circuit, which will shut
down the LDO regulator during extended over-current
events. The devices are available with active high or
active low enable input.
The AAT3221 and AAT3222 are available in Pb-free,
space-saving 5-pin SOT23 packages. The AAT3221 is
also available in a Pb-free, 8-pin SC70JW package. The
device is rated over the -40°C to +85°C temperature
range. Since only a small, 1μF ceramic output capacitor
is recommended, often the only space used is that occu-
pied by the AAT3221/2 itself. The AAT3221/2 provide a
compact and cost-effective voltage conversion solution.
The AAT3221 and AAT3122 are similar to the AAT3220,
with the exception that they offer further power savings
with an enable pin.
Features
• 1.1μA Quiescent Current
• Low Dropout: 200mV (typical)
• Guaranteed 150mA Output
• High Accuracy: ±2%
• Current Limit Protection
• Over-Temperature Protection
• Extremely Low Power Shutdown Mode
• Low Temperature Coefficient
• Factory-Programmed Output Voltages
▪ 1.5V to 3.5V
• Stable Operation With Virtually Any Output Capacitor
Type
• Active High or Low Enable Pin
• 4kV ESD
• 5-Pin SOT23 or 8-Pin SC70JW Package
• -40°C to +85°C Temperature Range
Applications
• Cellular Phones
• Digital Cameras
• Handheld Electronics
• Notebook Computers
• PDAs
• Portable Communication Devices
• Remote Controls
Typical Application
AAT3221/2
IN
EN
INPUT
GND
OUT
OUTPUT
GND
GND
ENABLE
(ENABLE)
CIN
1
μF
COUT
1
μF
(EN)


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