AAT3220
150mA NanoPower™ LDO Linear Regulator
General Description
The AAT3220 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, typically 1.1µA. Dropout voltage is also very
low, typically less than 225mV at the maximum out-
put current of 150mA. The AAT3220 has output
short-circuit and over-current protection. In addi-
tion, the device also has an over-temperature pro-
tection circuit which will shut down the LDO regu-
lator during extended over-current events.
The AAT3220 is available in a Pb-free, space-saving
SC59 package, or a Pb-free SOT-89 package for
applications requiring increased power dissipation.
The device is rated over the -40°C to +85°C tem-
perature 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 volt-
age conversion solution.
The AAT3221/2 is a similar product for this appli-
cation, especially when a shutdown mode is
required for further power savings.
Features
•
•
•
•
•
•
•
•
•
•
PowerLinear
™
1.1µA Quiescent Current
Low Dropout: 200mV (typ)
Guaranteed 150mA Output
High Accuracy: ±2.0%
Current Limit and Over-Temperature
Protection
Low Temperature Coefficient
Factory-Programmed Output Voltages:
1.8V to 3.5V
Stable Operation With Virtually Any Output
Capacitor Type
3-Pin SOT-89 or SC59 Package
4kV ESD Rating
Applications
•
•
•
•
•
•
•
Cellular Phones
Digital Cameras
Handheld Electronics
Notebook Computers
PDAs
Portable Communication Devices
Remote Controls
Typical Application
INPUT
IN
OUT
OUTPUT
AAT3220
GND
GND
GND
3220.2006.01.1.4
1
AAT3220
150mA NanoPower™ LDO Linear Regulator
Pin Descriptions
Pin #
SC59
1
3
2
SOT-89
1
2
3
Symbol
GND
IN
OUT
Function
Ground connection.
Input. Should be decoupled with 1µF or greater
capacitor.
Output. Should be decoupled with 1µF or greater
output capacitor.
Pin Configuration
SC59
(Top View)
SOT-89
(Top View)
GND
1
3
OUT
IN
GND
3
IN
2
OUT
2
1
2
3220.2006.01.1.4
AAT3220
150mA NanoPower™ LDO Linear Regulator
Absolute Maximum Ratings
1
T
A
= 25°C, unless otherwise noted.
Symbol
V
IN
I
OUT
T
J
T
LEAD
V
ESD
Description
Input Voltage
DC Output Current
Operating Junction Temperature Range
Maximum Soldering Temperature (at leads, 10 sec)
ESD Rating
2
— HBM
Value
-0.3 to 6
P
D
/ (V
IN
- V
O
)
-40 to 150
300
4000
Units
V
mA
°C
°C
V
Thermal Information
3
Symbol
Θ
JA
P
D
Description
Maximum Thermal Resistance
Maximum Power Dissipation
SC59
SOT-89
SC59
SOT-89
Rating
200
50
500
2
Units
°C/W
mW
W
Recommended Operating Conditions
Symbol
V
IN
T
Description
Input Voltage
4
Ambient Temperature Range
Rating
(V
OUT
+ V
DO
) 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.
2. Human body model is a 100pF capacitor discharged through a 1.5kΩ resistor into each pin.
3. Mounted on a demo board.
4. To calculate minimum input voltage, use the following equation: V
IN(MIN)
= V
OUT(MAX)
+ V
DO(MAX)
as long as V
IN
≥
2.5V.
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3
AAT3220
150mA NanoPower™ LDO Linear Regulator
Electrical Characteristics
V
IN
= V
OUT(NOM)
+ 1V, I
OUT
= 1mA, C
OUT
= 1µF, T
A
= 25°C, unless otherwise noted.
Symbol
V
OUT
I
OUT
I
SC
I
Q
∆V
OUT
/V
OUT
Description
DC Output Voltage Tolerance
Output Current
Short-Circuit Current
Ground Current
Line Regulation
Conditions
V
OUT
> 1.2V
V
OUT
< 0.4V
V
IN
= 5V, No Load
V
IN
= 4.0 to 5.5V
V
OUT
V
OUT
V
OUT
V
OUT
V
OUT
V
OUT
V
OUT
V
OUT
V
OUT
V
OUT
V
OUT
V
OUT
V
OUT
V
OUT
V
OUT
V
OUT
V
OUT
V
OUT
V
OUT
V
OUT
V
OUT
V
OUT
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
1.8
2.0
2.3
2.4
2.5
2.7
2.8
2.85
2.9
3.0
3.3
3.5
2.3
2.4
2.5
2.7
2.8
2.85
2.9
3.0
3.3
3.5
Min
-2.0
150
Typ
Max
2.0
Units
%
mA
mA
µA
%/V
∆V
OUT
/V
OUT
Load Regulation
I
L
= 1 to 100mA
V
DO
Dropout Voltage
1, 2
I
OUT
= 100mA
PSRR
T
SD
T
HYS
e
N
T
C
Power Supply Rejection Ratio
Over-Temperature Shutdown
Threshold
Over-Temperature Shutdown
Hysteresis
Output Noise
Output Voltage Temperature
Coefficient
100Hz
350
1.1
0.15
1.0
0.9
0.8
0.8
0.8
0.7
0.7
0.7
0.7
0.6
0.5
0.5
230
220
210
200
190
190
190
190
180
180
50
140
20
2.5
0.4
1.65
1.60
1.45
1.40
1.35
1.25
1.20
1.20
1.18
1.15
1.00
1.00
275
265
255
240
235
230
228
225
220
220
%
mV
dB
°C
°C
µV
ppm/°C
10Hz through 10kHz
350
80
1. V
DO
is defined as V
IN
- V
OUT
when V
OUT
is 98% of nominal.
2. For V
OUT
< 2.3V, V
DO
= 2.5V - V
OUT
.
4
3220.2006.01.1.4
AAT3220
150mA NanoPower™ LDO Linear Regulator
Typical Characteristics
V
IN
= V
OUT
+ 1V, T
A
= 25°C, output capacitor is 1µF ceramic, I
OUT
= 40mA, unless otherwise noted.
Output Voltage vs. Output Current
3.03
Output Voltage vs. Input Voltage
3.1
Output Voltage (V)
Output Voltage (V)
3.02
3.01
3
3
2.9
2.8
2.7
1mA
40mA
30°C
25°C
2.99
80°C
2.98
2.97
0
20
40
60
80
100
10mA
2.6
2.5
2.7
2.9
3.1
3.3
3.5
Output Current (mA)
Input Voltage (V)
Output Voltage vs. Input Voltage
3.03
Dropout Voltage vs. Output Current
400
3.02
1mA
10mA
Dropout Voltage (mV)
Output Voltage (V)
300
80°C
200
3.01
40mA
3
-30°C
100
25°C
2.99
3.5
4
4.5
5
5.5
0
0
25
50
75
100
125
150
Input Voltage (V)
Output Current (mA)
Supply Current vs. Input Voltage
Input Current with No Load (µA)
2.0
1.6
1.2
0.8
0.4
0
0
1
2
3
4
5
6
0
1.E+01
60
PSRR with 10mA Load
80°C
-30°C
PSRR (dB)
25°C
40
20
1.E+02
1.E+03
1.E+04
1.E+05
Input Voltage (V)
Frequency (Hz)
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