150mA MicroPower™ LDO with PowerOK
General Description
The AAT3216 MicroPower™ Low Dropout Linear
Regulator is ideally suited for portable applications
where low noise, extended battery life and small
size are critical. The AAT3216 has been specifi-
cally designed for low output noise performance,
fast transient response and high power supply
rejection ratio (PSRR), making it ideal for powering
sensitive RF circuits.
Other features include low quiescent current, typi-
cally 70µA, and low dropout voltage which is typi-
cally less than 200mV at full output current. The
device is output short circuit protected and has a
thermal shutdown circuit for additional protection
under extreme conditions.
The AAT3216 also features a low-power shutdown
mode for extended battery life. A Power-OK open-
drain output signals when V
OUT
is in regulation.
The AAT3216 is available in a space saving 5-pin
SOT23 or 8-pin SC70-JW package in 12 factory
programmed voltages of 1.2V, 1.5V, 1.8V, 2.0V,
2.3V, 2.5V, 2.7V, 2.8V, 2.85, 3.0V, 3.3V, or 3.5V.
AAT3216
Features
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
PowerLinear
™
SmartSwitch
™
Low Dropout - 200mV at 150mA
Guaranteed 150mA Output
High accuracy ±1.5%
70µA Quiescent Current
High Power Supply Ripple Rejection
Low self noise
PowerOK (POK) Output
Fast line and load transient response
Short circuit protection
Over-Temperature protection
Uses Low ESR ceramic capacitors
Shutdown mode for longer battery life
Low temperature coefficient
12 Factory programmed output voltages
SOT23 5-pin or SC70-JW 8-pin package
Preliminary Information
Applications
•
•
•
•
•
•
Cellular Phones
Notebook Computers
Desktop Computers
Portable Communication Devices
Personal Portable Electronics
Digital Cameras
Typical Application
V
IN
IN
OUT
V
OUT
AAT3216
ON/OFF
EN
GND
1µF
POK
100k
POK
2.2µF
GND
GND
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150mA MicroPower™ LDO with PowerOK
Pin Descriptions
Pin #
SOT23-5
SC70JW-8
AAT3216
Symbol
IN
GND
EN
Function
Input voltage pin - should be decoupled with 1µF or greater
capacitor.
Ground connection pin
Enable pin - this pin should not be left floating. When pulled low
the PMOS pass transistor turns off and all internal circuitry
enters low-power mode, consuming less than 1µA.
Power-OK Output. This open-drain output is low when OUT is out
of regulation. Connect a pull up resistor from POK to OUT or IN.
Output pin - should be decoupled with 2.2µF ceramic capacitor.
1
2
3
5, 6
8
7
4
5
1
2, 3, 4
POK
OUT
Pin Configuration
SOT23-5
(Top View)
SC70JW-8
(Top View)
IN
GND
EN
1 5
2
3 4
OUT
POK
POK
OUT
OUT
OUT
1
2
8
7
3
4
6
5
GND
EN
IN
IN
1
2
2
3216.2004.01.0.94
150mA MicroPower™ LDO with PowerOK
Absolute Maximum Ratings
Symbol
V
IN,
POK
I
OUT
T
J
AAT3216
(T
A
=25°C unless otherwise noted)
Value
6
P
D
/(V
IN
-V
O
)
-40 to 150
Description
Input Voltage, POK
DC Output Current
Operating Junction Temperature Range
Units
V
mA
°C
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.
Thermal Information
Symbol
Θ
JA
P
D
Description
Maximum Thermal Resistance
1
(SOT23-5, SC70JW-8)
Maximum Power Dissipation
1
(SOT23-5, SC70JW-8)
Rating
190
526
Units
°C/W
mW
Note 1: Mounted on a demo board.
Recommended Operating Conditions
Symbol
V
IN
T
Description
Input Voltage
2
Ambient Temperature Range
Rating
(V
OUT
+ V
DO
) to 5.5
-40 to +85
Units
V
°C
Note 2: 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.
3216.2004.01.0.94
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150mA MicroPower™ LDO with PowerOK
Electrical Characteristics
(V
IN
=V
OUT(NOM)
+1V for V
OUT
options greater than 1.5V. V
IN
= 2.5 for
V
OUT
≤1.5V.
I
OUT
=1mA, C
OUT
=2.2µF, C
IN
=1µf, T
A
= -40 to 85°C unless otherwise noted. Typical values are at
T
A
=25°C)
Symbol
V
OUT
I
OUT
V
DO
I
SC
I
Q
I
SD
∆V
OUT
/V
OUT
*∆V
IN
∆V
OUT
(line)
∆V
OUT
(load)
V
EN(L)
V
EN(H)
I
EN
V
POK
V
POKHYS
V
POK(OL)
I
POK
PSRR
T
SD
T
HYS
e
N
TC
AAT3216
Description
Output Voltage Tolerance
Output Current
Dropout Voltage
1, 2
Short Circuit Current
Ground Current
Shutdown Current
Line Regulation
3
Dynamic Line Regulation
Dynamic Load Regulation
Enable Threshold Low
Enable Threshold High
Leakage Current on Enable Pin
POK Trip Threshold
POK Hysteresis
POK Output Voltage Low
POK Output Leakage Current
Power Supply Rejection Ratio
Conditions
I
OUT
= 1mA to 150mA
Min Typ Max
T
A
=25°C
-1.5
T
A
=-40 to 85°C -2.5
150
200
600
70
1.5
2.5
300
125
1
0.09
5
30
0.6
1.5
Units
%
%
mA
mV
mA
µA
µA
%/V
mV
mV
V
V
µA
% of V
OUT
% of V
OUT
V
µA
dB
°C
°C
µVrms/rtHz
ppm/°C
V
OUT
> 1.2V
I
OUT
= 150mA
V
OUT
< 0.4V
V
IN
= 5V, No load, EN = V
IN
V
IN
= 5V, EN = 0V
V
IN
= V
OUT
+ 1 to 5.0V
V
IN
=V
OUT
+1V to V
OUT
+2V, I
OUT
=150mA,
T
R
/T
F
=2µs
I
OUT
= 1mA to 150mA, T
R
<5µs
V
EN
= 5V
V
OUT
rising, T
A
= 25°C
I
SINK
= 1mA
V
POK
< 5.5V, V
OUT
in regulation
1 kHz
I
OUT
=10mA
10kHz
1MHz
90
94
1
1
98
0.4
1
Over Temp Shutdown Threshold
Over Temp Shutdown Hysteresis
Output Noise
Noise Power BW = 300Hz-50kHz
Output Voltage Temp. Coeff.
65
45
42
145
12
250
22
Note 1: V
DO
is defined as V
IN
- V
OUT
when V
OUT
is 98% of nominal.
Note 2: For V
OUT
< 2.3V, V
DO
= 2.5V - V
OUT
.
Note 3: C
IN
= 10µF
4
3216.2004.01.0.94
150mA MicroPower™ LDO with PowerOK
Typical Characteristics
AAT3216
(Unless otherwise noted, V
IN
= 5V, T
A
= 25°C)
Dropout Voltage vs. Temperature
3.20
260
240
220
200
180
160
140
120
100
80
60
40
20
0
Dropout Characteristics
3.00
Dropout Voltage (mV)
I
L
= 150mA
V
OUT
(V)
I
OUT
= 0mA
I
OUT
= 10mA
I
OUT
= 50mA
I
OUT
= 100mA
I
OUT
= 150mA
2.80
2.60
2.40
2.20
2.00
2.70
I
L
= 100mA
I
L
= 50mA
-40 -30 -20 -10 0
10 20 30 40 50 60 70 80 90 100 110 120
2.80
2.90
3.00
3.10
3.20
Temperature (°C)
V
IN
(V)
Dropout Voltage vs. Output Current
90.00
Ground Current vs. Input Voltage
80.00
70.00
300
Dropout Voltage (mV)
250
I
GND
(µA)
200
150
100
50
0
0
25
50
75
100
125
150
60.00
50.00
40.00
30.00
20.00
10.00
0.00
2
2.5
3
3.5
4
4.5
5
85°C
25°C
-40°C
I
OUT
=150mA
I
OUT
=0mA
I
OUT
=50mA
I
OUT
=10mA
Output Current (mA)
V
IN
(V)
Quiescent Current vs. Temperature
100
Output Voltage vs. Temperature
1.203
1.202
Quiescent Current (µA)
90
Output Voltage (V)
-40 -30 -20 -10
0
10 20 30 40 50 60 70 80 90 100 110 120
80
70
60
50
40
30
20
10
0
1.201
1.200
1.199
1.198
1.197
1.196
-40 -30 -20 -10
0
10 20
30
40
50 60
70 80
90 100
Temperature (°C)
Temperature (°C)
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