Linear Regulator. AAT3223 Datasheet

AAT3223 Regulator. Datasheet pdf. Equivalent

AAT3223 Datasheet
Recommendation AAT3223 Datasheet
Part AAT3223
Description 250mA NanoPower LDO Linear Regulator
Feature AAT3223; www.DataSheet4U.com AAT3223 250mA NanoPower™ LDO Linear Regulator with Power-OK General Description.
Manufacture Advanced Analogic Technologies
Datasheet
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Advanced Analogic Technologies AAT3223
www.DataSheet4U.com
AAT3223
250mA NanoPower™ LDO
Linear Regulator with Power-OK
General Description
The AAT3223 PowerLinear NanoPower low
dropout (LDO) linear regulator is ideal for portable
applications where extended battery life is critical.
This device features extremely low quiescent cur-
rent which is typically 1.1µA. Dropout voltage is
also very low, typically 190mV at 100mA. The
AAT3223 has an enable pin feature which, when
pulled low, will put the LDO regulator into shutdown
mode, removing power from its load and offering
extended power conservation capabilities for
portable battery-powered applications. The
AAT3223 also has a Power-OK (POK) feature.
The POK function monitors the LDO output voltage
and will alert the system if the output falls out of
regulation.
The AAT3223 has output short-circuit and over-
current protection. In addition, the device has an
over-temperature protection circuit, which will shut
down the LDO regulator during extended over-cur-
rent events.
The AAT3223 is available in a space-saving 6-pin
SOT23 package and is rated over the -40°C to
+85°C temperature range.
The AAT3223 is similar to the AAT3221 with the
exception that it offers the additional Power-OK
function through the POK pin.
Features
PowerLinear
• 1.1µA Quiescent Current
• 250mA Output Current
• Low Dropout: 190mV (typical)
• High Accuracy: ±2%
• Current Limit Protection
• Over-Temperature Protection
• Extremely Low Power Shutdown Mode
• Low Temperature Coefficient
• Stable Operation With Virtually Any Output
Capacitor Type
• Power-OK Signal Output
• Active High Enable Pin
• 4kV ESD
• Factory-Programmed Output Voltages
• 6-pin SOT23 Package
Applications
• Cellular Phones
• Digital Cameras
• Handheld Electronics
• Notebook Computers
• PDAs
• Portable Communication Devices
• Remote Controls
Typical Application
VIN
IN OUT
VOUT
1µF
ON/OFF
AAT3223
EN POK
GND
100k
1µF
POK
GND
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3223.2005.04.1.4
GND
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Advanced Analogic Technologies AAT3223
www.DataSheet4U.com
AAT3223
250mA NanoPower™ LDO
Linear Regulator with Power-OK
Pin Descriptions
Pin #
1
2
3
4
5
6
Symbol
IN
GND
OUT
N/C
EN
POK
Function
Input pin. It is recommended to bypass this pin with a 1µF capacitor.
Ground connection pin.
Output pin. This pin should be decoupled with a 1µF or larger capacitor.
Not connected.
Enable input. Active high, logic level compatible.
Power-OK output pin. This pin is pulled to ground during a power failure; it
is normally high impedance and should have a 100kpull-up resistor con-
nected to OUT.
Pin Configuration
SOT23-6
(Top View)
IN 1
GND 2
OUT 3
6 POK
5 EN
4 N/C
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3223.2005.04.1.4



Advanced Analogic Technologies AAT3223
www.DataSheet4U.com
AAT3223
250mA NanoPower™ LDO
Linear Regulator with Power-OK
Absolute Maximum Ratings1
TA=25°C, unless otherwise noted.
Symbol
VIN
VEN
VENIN(MAX)
IOUT
TJ
TLEAD
Description
Input Voltage
EN to GND Voltage
Maximum EN to Input Voltage
Maximum DC Output Current
Operating Junction Temperature Range
Maximum Soldering Temperature (at leads, 10 sec)
Value
-0.3 to 6
-0.3 to 6
0.3
PD/(VIN-VO)
-40 to 150
300
Units
V
V
V
mA
°C
°C
Thermal Information2
Symbol
ΘJA
PD
Description
Thermal Resistance (SOT23-6)
Power Dissipation (SOT23-6) (TA = 25°C)3
Rating
150
667
Units
°C/W
mW
Recommended Operating Conditions
Symbol
VIN
T
Description
Input Voltage4
Ambient Temperature Range
Rating
(VOUT+VDO) to 5.5
-40 to +85
Units
V
°C
1. Stresses above those listed in Absolute Maximum Ratings may cause permanent damage to the device. Functional operation at condi-
tions other than the operating conditions specified is not implied. Only one Absolute Maximum Rating should be applied at any one time.
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4. To calculate minimum input voltage, use the following equation: VIN(MIN) = VOUT(MAX) + VDO(MAX) as long as VIN 2.5V.
3223.2005.04.1.4
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