AIC1730
AIC1730
150mA, Low Noise, Low Dropout Linear Regulator
n FEATURES
n DESCRIPTION
l
Available in ±2% Output Tolerance.
The AIC1730 is a low noise, low dropout linear
l
1.8V to 3.3V Output Voltage with 0.1V Increment.
regulator,
l
Active Low Shutdown Control.
l
Very Low Quiescent Current.
l
Very Low Dropout Voltage.
state when the SHDN pin is set to a logic high
l
Miniature Package (SOT-23-5 & SOT-23-6W)
level. An internal P-MOSFET pass transistor is
l
Short Circuit and Thermal Protection.
used to achieve a low dropout voltage of 90mV at
l
Very Low Noise.
50mA load current. It offers high precision output
housed
in
a
small
SOT-23-5 &
SOT-23-6W package. The device is in the “ON”
n APPLICATIONS
voltage of ±2%. The very low quiescent current
and low dropout voltage make this device ideal
l
Cellular Telephones.
l
Pagers.
l
Personal Communication Equipment.
l
Cordless Telephones.
requirement for a reverse voltage protection
l
Portable Instrumentation.
diode. The high ripple rejection and low noise
l
Portable Consumer Equipment.
provide
l
Radio Control Systems.
l
Low Voltage Systems.
l
Battery Powered Systems.
for battery powered applications. The internal
reverse
bias
protection
enhanced
applications.
An
eliminates
performance
external
for
capacitor
the
critical
can
be
connected to the noise bypass pin to reduce the
output noise level.
n TYPICAL APPLICATION CIRCUIT
VIN
VIN
VOUT
+
CIN
1µF
COUT
1µF
GND
SHDN
V
VOUT
+
BP
CBP
SHDN
AIC1730
0.1µF
Low Noise Low Dropout Linear Regulator
Analog Integrations Corporation
4F, 9 Industry E. 9th Rd, Science-Based Industrial Park, Hsinchu, Taiwan
TEL: 886-3-5772500
FAX: 886-3-5772510
www.analog.com.tw
DS-1730-01 051702
1
AIC1730
n ORDERING INFORMATION
AIC1730-XXCXXX
PIN CONFIGURATION
PACKING TYPE
TR: TAPE & REEL
BG: BAG
SOT-23-5 (CV)
TOP VIEW
1: VIN
2: GND
3: SHDN
4: BP
5: VOUT
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.
SOT-23-6W (CQ)
TOP VIEW
1: SHDN
2: GND
3: BP
4: VOUT
5: GND
6: VIN
5
4
1
2
3
6
5
4
1
2
3
Example: AIC1730-18CVTR
à 1.8V Version, in SOT-23-5 Package &
Tape & Reel Packing Type
n
ABSOLUTE MAXIMUM RATINGS
Supply Voltage
.................… … … … … … … … … … … … ..… … … … … … … ....................12V
Operating Temperature Range
.… … … … … … … … … … … … … … … … … … … .....-40ºC~85ºC
Storage Temperature Range
................… … … … … … … … … … … … … … .........-65ºC~150ºC
Shutdown Terminal Voltage
..… … … … … … … … … … … … … … … … … … … … … ..............12V
Noise Bypass Terminal Voltage
.… … … … … … … … … … … .… … … … … … … … … ..............5V
Thermal Resistance (Junction to Case)
SOT-23-5 … ....… … … ..… … … ..… … … ..130°C /W
Thermal Resistance Junction to Ambient SOT-23-5 … ....… … ..… … … … ..… … … ..220°C /W
(Assume no ambient airflow, no heatsink)
2
AIC1730
n ELECTRICAL CHARACTERISTICS
(CIN=1µF , COUT=10µF, T J=25°C, unless
otherwise specified)
PARAMETER
TEST CONDITIONS
SYMBOL
Quiescent Current
IOUT = 0mA, VIN = 3.6~12V
IQ
Standby Current
VIN = 3.6~8V , output OFF
ISTBY
GND Pin Current
IOUT = 0.1~150mA
IGND
Continuous Output Current
VIN = VOUT + 1V
IOUT
Output Current Limit
VIN = VOUT + 1V , VOUT = 0V
Output Voltage Tolerance
VIN = VOUT + 1V , no load
Temperature Coefficient
Line Regulation
Load Regulation
VIN = VOUT(TYP) + 1V to
VOUT(TYP) + 6V
VIN = 5V ,
IOUT = 0.1~150mA
MIN.
IOUT = 100 mA VOUT≥2.5V
IIL
150
VOUT
-2
IOUT=150 mA
VOUT <2.5V
Noise Bypass Terminal Voltage
Output Noise
CBP = 0.1µF , f = 1KHz
VIN = 5V
UNIT
55
80
µA
0.1
µA
80
µA
150
mA
220
mA
2
%
TC
50
150
ppm/ºC
∆VLIR
2
7
mV
∆VLOR
7
25
mV
90
160
mV
140
230
mV
200
350
mV
700
mV
VDROP1
IOUT = 150 mA
Dropout Voltage (2)
MAX.
55
IOUT = 50 mA
Dropout Voltage (1)
TYP.
VDROP2
VREF
1.23
∆n
0.46
V
µV
Hz
SHUTDOWN TERMINAL SPECIFICATIONS
Shutdown Pin Current
ISHDN
0.1
µA
V SHDN
Shutdown Pin Voltage (ON)
Output ON
Shutdown Pin Voltage (OFF)
Output OFF
(ON)
1.6
V
V SHDN
Shutdown Exit Delay Time
CBP = 0.1µF , COUT = 1µF,
IOUT=30mA
0.6
(OFF)
V
∆t
300
µS
TSD
155
ºC
THERMAL PROTECTION
Thermal Shutdown Temperature
3
AIC1730
n TYPICAL PERFORMANCE CHARACTERISTICS
IOUT=1mA,CBP=0.1µF
COUT=10µF
IOUT=1mA,CBP =0.1 µF
COUT=1µF
VOUT
VOUT
50mV/DIV
50mV/DIV
VOUT +3V
VOUT+3V
VOUT+1V
VOUT+1V
VIN
VIN
2V/DIV
2V/DIV
Time (100µ S/DIV)
TIME (100 µS/DIV)
Fig. 1 Line Transient Response
Fig. 2
Line Transient Response
IOUT=1mA,CBP =1µF
COUT=1µF
IOUT=1mA,CB P=1µF
COUT=10µF
VOUT
VOUT
50mV/DIV
50mV/DIV
VOUT+3V
VOUT+1V
VOUT+3V
VIN
VOUT+1V
VIN
2V/DIV
2V/DIV
Time (100µ S/DIV)
Time (100µS/DIV)
Fig. 3 Line Transient Response
Fig. 4 Line Transient Response
I OUT =30mA,C BP=0.01µF
V OUT
IOUT=30mA,CBP=0.1µF
VOUT
C OUT =3.3µF
2V/DIV
COUT=3.3 µF
2V/DIV
VSHDN
VSHDN
2V/DIV
2V/DIV
Time (250µS/DIV)
Fig. 5
Shutdown Exit Delay
Time (250µ S/DIV)
Fig. 6 Shutdown Exit Delay
4
AIC1730
n TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
IOUT=10mA,CBP =0.1 µF
COUT=1µF
VOUT
2V/DIV
IOUT=10mA,C BP=0.1µF
COUT =10µF
2V/DIV
VSHDN
2V/DIV
VSHDN
2V/DIV
Time (250 µS/DIV)
Fig. 7
TIME (250 µS/DIV)
Shutdown Exit Delay
Fig. 8
CB P=0.1 µF
Shutdown Exit Delay
CBP =0.1 µF
COUT=10µF
COUT=1µF
VOUT
VOUT
20mV/DIV
20mV/DIV
IOUT=60mA
IOUT=60mA
IOUT=0mA
I OUT =0mA
IOUT
I OUT
TIME (1mS/DIV)
Time (1mS/DIV)
Fig. 9
VOUT
Load Transient Response
Fig. 10 Load Transient Response
C BP =0.1 µF
C OUT=10µF
CB P=0.1 µF
COUT=1µF
VOUT
VOUT
20mV/DIV
20mV/DIV
I OUT=90mA
IOUT=90mA
I OUT=0mA
I OUT =0mA
I OUT
I OUT
Time (1mS/DIV)
Time (1mS/DIV)
Fig. 11 Load Transient Response
Fig. 12 Load Transient Response
5
AIC1730
n TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
250
70
IOUT =50mA
60
VOUT=3.0V
200
IOUT=0mA
IGND (uA)
VDROP (mV)
50
150
100
40
30
20
50
10
0
0
50
100
0
150
0
1
2
3
IOUT (mA)
Fig. 13
4
5
6
VIN (V)
Fig. 14
Dropout Voltage vs. Output Current
80
Ground Current vs. Input Voltage (VOUT=3.0V)
70
IOUT=90mA
68
70
66
60
IGND (mA)
IQ (µA)
64
IOUT =0mA
50
40
30
IOUT =60mA
62
60
IOUT =30mA
58
56
20
54
10
0
0
52
2
4
6
8
10
12
14
50
-40
16
-20
0
20
VIN (V)
60
80
100
120
140
160
TA (°C)
Fig. 15 Quiescent Current (ON Mode) vs. Input Voltage
Fig. 16
2.0
Ground Current vs. Temperature
400
1.5
300
Output ON
IOUT (mA)
VSHDN (V)
40
1.0
200
VOUT is connected to GND
0.5
100
Output OFF
0.0
-40
0
0
40
80
120
0
2
Fig. 17
Shutdown Voltage vs. Temperature
4
6
8
V IN (V)
TA (°C)
Fig. 18
Short Circuit Current vs. Input Voltage
6
AIC1730
n TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
IGND (µA)
70
65
60
55
0
50
100
150
IOUT (mA)
Fig. 19
Ground Current vs. Output Current
n BLOCK DIAGRAM
VIN
Current
Limiting
BP
VREF
1.23V
SHDN
Power
Shutdown
+
Error
Amp.
VOUT
Thermal
Limiting
GND
7
AIC1730
n PIN DESCRIPTIONS
SOT-23-5
PIN 1 : VIN
SOT-23-6W
-
PIN 2 : GND -
Power supply input pin. Bypass
PIN 1 :
SHDN
with a 1µF capacitor to GND
PIN 2 :
GND
Ground
functions
pin.
as
This
a
pin
- Active-Low shutdown input pin.
-
also
heatsink.
Ground
functions
To
pin.
as
This
a
pin
heatsink.
also
To
maximize power dissipation, use
maximize power dissipation, use
of
of
circuit-board ground plane is
a
large
pad
or
the
circuit-board ground plane is
recommended.
a
large
pad
or
the
recommended.
PIN 3 :
BP
- Noise bypass pin. An external
PIN 3 : SHDN - Active-Low shutdown input pin.
bypass capacitor connected to
PIN 4 : BP
the BP pin reduces noises at the
- Noise bypass pin. An external
bypass capacitor connected to
the BP pin reduces noises at the
output.
PIN 4 :
VOUT
PIN 5 :
GND
- Output pin. Sources up to 150
output.
PIN 5 : VOUT - Output pin. Sources up to 150
mA.
-
mA.
Ground
functions
pin.
as
This
a
pin
heatsink.
also
To
maximize power dissipation, use
of
a
large
pad
or
the
circuit-board ground plane is
recommended.
PIN 6 :
VIN
-
Power supply input pin. Bypass
with a 1µF capacitor to GND.
n DETAILED DESCRIPTION OF TECHNICAL TERMS
OUTPUT VOLTAGE (VOUT)
which the output voltage drops 100mV below the
The AIC1730 provides factory-set output voltages
value measured with a 1V difference.
from 1.8V to 3.3V, in 100mV increments. The
output voltage is specified with VIN = VOUT (TYP)
+ 1V and IOUT = 0mA
CONTINUOUS OUTPUT CURRENT (IOUT)
Normal rated output current. This is limited by
package power dissipation.
DROPOUT VOLTAGE (VDROP)
The dropout voltage is defined as the difference
between the input voltage and output voltage at
which point the regulator starts to fall out of
regulation. Below this value, the output voltage
will fall as the input voltage is reduced. It
depends on the load current and junction
temperature. The dropout voltage is specified at
LINE REGULATION
Line regulation is the ability of the regulator to
maintain a constant output voltage as the input
voltage changes. The line regulation is specified
as the input voltage is changed from VIN = VOUT +
1 V to VIN = VOUT + 6 V and IOUT = 1mA.
8
AIC1730
LOAD REGULATION
CURRENT LIMIT (IIL)
Load regulation is the ability of the regulator to
The AIC1730 include a current limiter, which
maintain a constant output voltage as the load
monitors and controls the maximum output
current changes. To minimize temperature effects,
current to be 300mA typically if the output is
it is a pulsed measurement with the input voltage
shorted to ground. This can protect the device
set to VIN = VOUT + 1 V. The load regulation is
from being damaged.
specified under the output current step of 0.1mA
to 150mA.
THERMAL PROTECTION
The thermal sensor protects the device when the
QUIESCENT CURRENT (IQ)
junction temperature exceeds TJ = +155ºC. It
The quiescent current is the current flowing
signals the shutdown logic, turning off the pass
through the ground pin under no load.
transistor and allowing the IC to cool. After the
IC’s junction temperature cools by 15ºC, the
GROUND CURRENT (IGND)
Ground current is the current flowing through the
thermal sensor will turn on the pass transistor
again. Thermal protection is designed to protect
ground pin under loading.
the device in the event of fault conditions. For
STANDBY CURRENT (ISTBY)
continuous operation do not exceed the absolute
Standby current is the current flowing into the
maximum junction-temperature rating of TJ =
regulator when the output is shutdown by setting
150ºC, or damage may occur to the device.
V SHDN = 0V, VIN = 8 V.
n APPLICATION INFORMATION
INPUT-OUTPUT CAPACITORS
Linear
regulators
capacitors
require
to
input
maintain
1µF(tantalum) and be rated for the actual
and
output
stability.
The
ambient operating temperature range.
Note: It is very important to check the selected
recommended minimum value of input capacitor
manufactures’
is 0.22µF. The output capacitor should be
(capacitance and ESR) over temperature.
electrical
characteristics
selected within the Equivalent Series Resistance
(ESR) range shown in the graphs below for
stability. Because the ceramic capacitor’s ESR
is
lower
and
(capacitance
its
and
electrical
ESR)
vary
characteristics
widely
over
temperature, a tantalum output capacitor is
recommended, especially for heavier load. In
general, the capacitor should be at least
NOISE BYPASS CAPACITOR
Use a 0.1µF bypass capacitor at BP pin for low
output voltage noise. Increasing the capacitance
such as 1µF will decrease the output noise,
however,
values
performance
above
advantage
1µF
and
provide
no
are
not
recommended.
9
AIC1730
POWER DISSIPATION
where
The maximum power dissipation of AIC1730
between the die junction and the surrounding air,
depends on the thermal resistance of the case
TJ -TA is
the
temperature
difference
RθJB is the thermal resistance of the package,
and circuit board, the temperature difference
and Rθ BA is the thermal resistance through the
between the die junction and ambient air, and
PCB, copper traces, and other materials to the
the rate of air flow. The rate of temperature rise
surrounding air.
is
pad
As a general rule, the lower the temperature is,
configuration on the PCB, the board material,
the better the reliability of the device is. So the
and the ambient temperature. When the IC
PCB mounting pad should provide maximum
mounting with good thermal conductivity is used,
thermal conductivity to maintain low device
the junction will be low even if the power
temperature.
dissipation is great.
The GND pin performs the dual function of
The power dissipation across the device is
providing an electrical connection to ground and
P = IOUT (V IN -VOUT).
channeling heat away. Therefore, connecting the
The maximum power dissipation is:
GND pin to ground with a large pad or ground
greatly
PMAX =
affected
by
the
mounting
(TJ − TA)
(R?JB + R? BA)
plane would increase the power dissipation and
reduce the device temperature.
100
100
COUT=1µF
COUT=2.2µ F
10
ESR (Ω)
ESR(Ω)
10
1
STABLE REGION
1
Stable Region
0.1
0.01
0.1
50
100
IOUT (mA)
150
0.01
50
Fig. 20 Max Power Dissipation, COUT=1µF
100
150
Fig. 21 Max Power Dissipation, COUT=2.2 µF
100
100
COUT =10µF
COUT=3.3µF
10
ESR( Ω)
10
ESR(Ω)
IOUT (mA)
1
1
Stable Region
0.1
0.1
0.01
100
50
IOUT (mA)
Fig. 22 Max Power Dissipation, C OUT =3.3µF
150
Stable Region
0.01
100
50
150
IOUT (mA)
Fig. 23 Max Power Dissipation, C OUT=10µF
10
AIC1730
n PHYSICAL DIMENSIONS
l
SOT-23-5 (unit: mm)
C
D
L
H E
θ1
e
A
A2
MIN
MAX
A
1.00
1.30
A1
—
0.10
A2
0.70
0.90
b
0.35
0.50
C
0.10
0.25
D
2.70
3.10
E
1.40
1.80
e
A1
b
l
SYMBOL
1.90 (TYP)
H
2.60
3.00
L
0.37
—
θ1
1°
9°
SOT-23-5 Marking
Part No.
AIC1730-18CV
AIC1730-19CV
AIC1730-20CV
AIC1730-21CV
AIC1730-22CV
AIC1730-23CV
AIC1730-24CV
AIC1730-25CV
AIC1730-26CV
Marking
EC18
EC19
EC20
EC21
EC22
EC23
EC24
EC25
EC26
Part No.
AIC1730-27CV
AIC1730-28CV
AIC1730-285CV
AIC1730-29CV
AIC1730-30CV
AIC1730-31CV
AIC1730-32CV
AIC1730-33CV
Marking
EC27
EC28
EC2J
EC29
EC30
EC31
EC32
EC33
11
AIC1730
l
SOT-23-6W (unit: mm)
C
D
L
H E
θ1
e
A
A2
MIN
MAX
A
1.00
1.30
A1
—
0.10
A2
0.70
0.90
b
0.35
0.50
C
0.10
0.25
D
2.70
3.10
E
1.60
2.00
e
A1
b
l
SYMBOL
1.90 (TYP)
H
2.60
3.00
L
0.37
—
θ1
1°
9°
SOT-23-6W Marking
Part No.
AIC1730-18CQ
AIC1730-19CQ
AIC1730-20CQ
AIC1730-21CQ
AIC1730-22CQ
AIC1730-23CQ
AIC1730-24CQ
AIC1730-25CQ
AIC1730-26CQ
Marking
EB18
EB19
EB20
EB21
EB22
EB23
EB24
EB25
EB26
Part No.
AIC1730-27CQ
AIC1730-28CQ
AIC1730-285CQ
AIC1730-29CQ
AIC1730-30CQ
AIC1730-31CQ
AIC1730-32CQ
AIC1730-33CQ
Marking
EB27
EB28
EB2J
EB29
EB30
EB31
EB32
EB33
12
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