AAT3220
150mA NanoPower™ LDO Linear Regulator
General Description
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.
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.
The AAT3221/2 is a similar product for this appli-
cation, especially when a shutdown mode is
required for further power savings.
Features
•
•
•
•
•
•
•
•
•
•
•
PowerLinear
™
1.1 µA Quiescent Current
Low Dropout: 200 mV (typ)
Guaranteed 150mA Output
High accuracy: ±2.0%
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
3-pin SOT-89 and SOT-23 packages
4kV ESD Rating
Applications
•
•
•
•
•
•
•
Cellular Phones
Notebook Computers
Portable Communication Devices
Handheld Electronics
Remote Controls
Digital Cameras
PDAs
Typical Application
INPUT
IN
OUT
OUTPUT
AAT3220
GND
GND
GND
3220.2001.09.1.0
1
AAT3220
150mA NanoPower™ LDO Linear Regulator
Pin Descriptions
Pin #
SOT23-3
1
3
2
N/A
SOT-89
1
2
3
N/A
Symbol
GND
V
IN
OUT
NC
Function
Ground connection
Input - should be decoupled with 1µF or greater
capacitor
Output - should be decoupled with 1µF or greater
output capacitor
Not connected
Pin Configuration
SOT-23-3
(Top View)
SOT-89
(Top View)
GND
OUT
1
3
2
2
IN
3
OUT
IN
GND
1
2
3220.2001.09.1.0
AAT3220
150mA NanoPower™ LDO Linear Regulator
Absolute Maximum Ratings
Symbol
V
IN
I
OUT
T
J
T
LEAD
V
ESD
(T
A
=25°C unless otherwise noted)
Value
-0.3 to 6
P
D
/(V
IN
-V
O
)
-40 to 150
300
4000
Description
Input Voltage
DC Output Current
Operating Junction Temperature Range
Maximum Soldering Temperature (at leads, 10 sec)
ESD Rating
1
— HBM
Units
V
mA
°C
°C
V
Note: Stresses above those listed in Absolute Maximum Ratings may cause permanent damage to the device. Functional operation at con-
ditions other than the operating conditions specified is not implied. Only one Absolute Maximum rating should be applied at any one time.
Note 1: Human body model is a 100pF capacitor discharged through a 1.5kW resistor into each pin.
Thermal Information
Symbol
Θ
JA
P
D
Description
Maximum Thermal Resistance (SOT-23-3)
2
Maximum Thermal Resistance (SOT-89)
2
Maximum Power Dissipation (SOT-23-3)
2
Maximum Power Dissipation (SOT-89)
2
Rating
200
50
500
2
Units
°C/W
°C/W
mW
W
Note 2: Mounted on a demo board.
Recommended Operating Conditions
Symbol
V
IN
T
Description
Input Voltage
Ambient Temperature Range
Rating
(V
OUT
+0.34) to 5.5
-40 to +85
Units
V
°C
3220.2001.09.1.0
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AAT3220
150mA NanoPower™ LDO Linear Regulator
Electrical Characteristics
noted)
Symbol
V
OUT
I
OUT
I
SC
I
Q
∆V
OUT
/V
OUT
(V
IN
=V
OUT(NOM)
+1V, I
OUT
=1mA, C
OUT
=1µF, T
A
=25°C unless otherwise
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
= 4.0-5.5V
V
OUT
V
OUT
V
OUT
V
OUT
V
OUT
I
L
=1 to 100mA V
OUT
V
OUT
V
OUT
V
OUT
V
OUT
V
OUT
V
OUT
V
OUT
V
OUT
V
OUT
V
OUT
I
OUT
= 100mA V
OUT
V
OUT
V
OUT
V
OUT
V
OUT
V
OUT
100 Hz
Min
-2.0
150
Typ
Max
2.0
Units
%
mA
mA
µA
%/V
∆V
OUT
/V
OUT
Load Regulation
V
DO
Dropout Voltage
1
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
1.8
2.0
2.3
2.4
2.5
2.7
2.8
2.85
3.0
3.3
3.5
1.8
2.0
2.3
2.4
2.5
2.7
2.8
2.85
3.0
3.3
3.5
PSRR
T
SD
T
HYS
e
N
T
C
Power Supply Rejection Ratio
Over Temp Shutdown Threshold
Over Temp Shutdown Hysteresis
Output Noise
Output Voltage Temp. Coeff.
10 Hz through 10 kHz
350
1.1
0.15
1.0
0.9
0.8
0.8
0.8
0.7
0.7
0.7
0.6
0.5
0.5
290
265
230
220
210
200
190
190
190
180
180
50
140
20
350
80
2.5
0.4
1.65
1.60
1.45
1.40
1.35
1.25
1.20
1.20
1.15
1.00
1.00
340
315
275
265
255
240
235
230
225
220
220
%
mV
dB
°C
°C
µV
ppm/°C
Note 1: V
DO
is defined as V
IN
- V
OUT
when V
OUT
is 98% of nominal.
4
3220.2001.09.1.0
AAT3220
150mA NanoPower™ LDO Linear Regulator
Typical Characteristics
(Unless otherwise noted: V
IN
= V
OUT
+ 1V, T
A
= 25°C, Output capacitor is 1 µF ceramic, I
OUT
= 40 mA)
Output Voltage v. Output Current
3.03
3.02
Output Voltage v. Input Voltage
3.1
3
2.9
2.8
2.7
Output (V)
Output (V)
3.01
3
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 (mA)
Input ( V )
Output Voltage v. Input Voltage
3.03
Drop-out Voltage v. Output Current
400
Drop-out (mV )
3.02
1mA
10mA
300
Output (V)
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 (V)
Output (mA)
Supply Current v. Input Voltage
2.0
60
PSRR with 10mA Load
Input (
µ
A) with No Load
1.6
PSRR ( dB )
5
6
25”C
80”C
40
1.2
0.8
0.4
0
0
1
2
-30”C
20
3
4
0
1.E+01
1.E+02
1.E+03
1.E+04
1.E+05
Input ( V)
Frequency ( Hz )
3220.2001.09.1.0
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