AAT3200
OmniPower™ LDO Linear Regulator
General Description
The AAT3200 PowerLinear OmniPower low
dropout (LDO) linear regulator is ideal for systems
where a low-cost solution is required. This device
features extremely low quiescent current, typically
20µA. Dropout voltage is also very low, typically
200mV. The AAT3200 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-current events.
The AAT3200 is available in a space-saving, Pb-
free SC59 or SOT-89 package (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, the AAT3200 is a truly cost-effective volt-
age conversion solution.
The AAT3201 is a similar product for this applica-
tion, especially when a shutdown mode is required
for further power savings.
Features
•
•
•
•
•
•
•
•
•
•
•
PowerLinear
™
250mA Output for SOT-89 Package
150mA Output for SC59 Package
20µA Quiescent Current
Low Dropout: 200mV (typical)
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 SC59 Packages
Applications
•
•
CD-ROM Drives
Consumer Electronics
Typical Application
INPUT
IN
OUT
OUTPUT
AAT3200
GND
GND
GND
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AAT3200
OmniPower™ LDO Linear Regulator
Absolute Maximum Ratings
1
T
A
= 25°C, unless otherwise noted.
Symbol
V
IN
I
OUT
T
J
T
LEAD
Description
Input Voltage
DC Output Current
Operating Junction Temperature Range
Maximum Soldering Temperature (at leads, 10 sec)
Value
-0.3 to 6
P
D
/(V
IN
-V
O
)
-40 to 150
300
Units
V
mA
°C
°C
Thermal Information
2
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
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. Mounted on a demo board.
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3
AAT3200
OmniPower™ 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
SOT-89
I
OUT
SC59
I
SC
I
Q
∆V
OUT
/V
OUT
Description
DC Output Voltage Tolerance
Maximum Output Current
Maximum Output Current
Short-Circuit Current
Ground Current
Line Regulation
Conditions
V
OUT
> 1.2V
V
OUT
> 1.2V
V
OUT
< 0.4V
V
IN
= 5V, No Load
V
IN
= 4.0V 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
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
Min
-2.0
250
150
Typ
Max
2.0
Units
%
mA
mA
mA
µA
%/V
∆V
OUT
/V
OUT
Load Regulation
I
L
= 1 to 100mA
V
DO
Dropout Voltage
1
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
20
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
30
0.6
1.65
1.60
1.45
1.40
1.35
1.25
1.20
1.20
1.15
1.00
1.00
410
385
345
335
335
310
305
300
295
295
290
%
mV
dB
°C
°C
µV
RMS
ppm/°C
10Hz through 10kHz
350
80
1. V
DO
is defined as V
IN
- V
OUT
when V
OUT
is 98% of nominal.
4
3200.2006.02.1.4
AAT3200
OmniPower™ LDO Linear Regulator
Typical Characteristics
Unless otherwise noted, V
IN
= V
OUT
+ 1V, T
A
= 25°C; output capacitor is 1µF ceramic, I
OUT
= 40mA.
Output Voltage vs. Output Current
3.03
Output Voltage vs. Input Voltage
3.1
3
2.9
2.8
2.7
Output Voltage (V)
Output Voltage (V)
3.02
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 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)
PSRR With 10mA Load
60
30
20
10
0
-10
-20
-30
1.E+01
AAT3200 Noise Spectrum
40
20
0
1.E+01
1.E+02
1.E+03
1.E+04
1.E+05
Noise (dBµV/rt Hz)
PSRR (dB)
Frequency (Hz)
1.E+02
1.E+03
1.E+04
1.E+05
1.E+06
Frequency (Hz)
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