AIC1730
Low Noise Low Dropout, 150mA Linear Regulator
Analog Integrations Corporation 4F, 9, Industry E. 9th Rd, Science Based Industrial Park, Hsinchu Taiwan, ROC
www.analog.com.tw
DS-1730-00 May 22, 01
TEL: 886-3-5772500 FAX: 886-3-5772510
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FEATURES
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Available in
2% Output Tolerance.
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1.8V to 3.3V Output Voltage with 0.1V Increment.
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Active Low Shutdown Control.
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Very Low Quiescent Current.
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Very Low Dropout Voltage.
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Miniature Package (SOT-23-5 & SOT-23-6W)
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Short Circuit and Thermal Protection.
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Very Low Noise.
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APPLICATIONS
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Cellular Telephones.
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Pagers.
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Personal Communication Equipment.
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Cordless Telephones.
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Portable Instrumentation.
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Portable Consumer Equipment.
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Radio Control Systems.
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Low Voltage Systems.
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Battery Powered Systems.
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DESCRIPTION
The AIC1730 is a low noise, low dropout linear
regulator, housed in a small SOT-23-5 & SOT-23-
6W package. The device is in the "ON" state
when the
SHDN pin is set to a logic high level.
An internal P-MOSFET pass transistor is used to
achieve a low dropout voltage of 90mV at 50mA
load current. It offers high precision output voltage
of
2%. The very low quiescent current and low
dropout voltage make this device ideal for battery
powered applications. The internal reverse bias
protection eliminates the requirement for a
reverse voltage protection diode. The high ripple
rejection and low noise provide enhanced
performance for critical applications. An external
capacitor can be connected to the noise bypass
pin to reduce the output noise level.
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TYPICAL APPLICATION CIRCUIT
C
IN
1
F
V
IN
BP
VOUT
SHDN
GND
VIN
AIC1730
C
OUT
1
F
C
BP
0.1
F
V
SHDN
V
OUT
+
+
Low Noise Low Dropout Linear Regulator
AIC1730
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ORDERING INFORMATION
PACKAGE TYPE
V: SOT-23-5
Q: SOT-23-6W
OUTPUT VOLTAGE
18: 1.8V
.
.
.
285: 2.85V
.
.
.
33: 3.3V
The output voltage is available
by 0.1V per step.
ORDER NUMBER
PIN CONFIGURATION
AIC1730-18CV
:
:
:
AIC1730-33CV
(SOT-23-5)
FRONT VIEW
VOUT
GND
BP
VIN
AIC1730-XCX
3
2
1
4
5
AIC1730-18CQ
:
:
:
AIC1730-33CQ
(SOT-23-6W )
FRONT VIEW
VOUT
GND BP
VIN
3
2
1
4
6
5
GND
SHDN
SHDN
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ABSOLUTE MAXIMUM RATINGS
Supply Voltage
.................... ... ... ... ... ... ... ... ... ... ... ... ..... ... ... ... ... ... ... ....................12V
Power Dissipation
................ ... ... ... ... ... ... ... ... ... ... ... ... ... ... .... ... ... ... ... .............500mW
Operating Temperature Range .... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... .....-40C~85C
Storage Temperature Range
................... ... ... ... ... ... ... ... ... ... ... ... ... ... .........-65C~150C
Shutdown Terminal Voltage
..... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ..............12V
Noise Bypass Terminal Voltage .... ... ... ... ... ... ... ... ... ... ... .... ... ... ... ... ... ... ... ... ..............5V
AIC1730
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ELECTRICAL CHARACTERISTICS
(C
IN
=1
F , C
OUT
=10
F, T
J
=25
C, unless
otherwise specified)
PARAMETER
TEST CONDITIONS
SYMBOL
MIN.
TYP.
MAX.
UNIT
Quiescent Current
I
OUT
= 0mA, V
IN
= 3.6~12V
I
Q
55
80
A
Standby Current
V
IN
= 3.6~8V , output OFF
I
STBY
0.1
A
GND Pin Current
I
OUT
= 0.1~150mA
I
GND
55
80
A
Continuous Output Current
V
IN
= V
OUT
+ 1V
I
OUT
150
mA
Output Current Limit
V
IN
= V
OUT
+ 1V , V
OUT
= 0V
I
IL
150
220
mA
Output Voltage Tolerance
V
IN
= V
OUT
+ 1V , no load
V
OUT
-2
2
%
Temperature Coefficient
TC
50
150
ppm/C
Line Regulation
V
IN
= V
OUT
TYP
+ 1V to
V
OUT
TYP
+ 6V
V
LIR
2
7
mV
Load Regulation
V
IN
= 5V ,
I
OUT
= 0.1~150mA
V
LOR
7
25
mV
I
OUT
= 50 mA
90
160
mV
I
OUT
= 100 mA
140
230
mV
Dropout Voltage (1)
I
OUT
= 150 mA
V
OUT
2.5V
V
DROP1
200
350
mV
Dropout Voltage (2)
I
OUT
=150 mA
V
OUT
<2.5V
V
DROP2
700
mV
Noise Bypass Terminal Voltage
V
REF
1.23
V
Output Noise
C
BP
= 0.1
F , f = 1KHz
V
IN
= 5V
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0.46
Hz
V
SHUTDOWN TERMINAL SPECIFICATIONS
Shutdown Pin Current
I
SHDN
0.1
A
Shutdown Pin Voltage (ON)
Output ON
V
SHDN
ON
1.6
V
Shutdown Pin Voltage (OFF)
Output OFF
V
SHDN
OFF
0.6
V
Shutdown Exit Delay Time
C
BP
= 0.1
F , C
OUT
= 1
F,
I
OUT
=30mA
t
300
S
THERMAL PROTECTION
Thermal Shutdown Temperature
T
SD
155
C
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