AIC AIC1731-13GV 300ma, low dropout linear regulator with shutdown Datasheet

AIC1731
300mA, Low Dropout Linear Regulator
with Shutdown
„ FEATURES
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„ DESCRIPTION
Active Low Shutdown Control.
Very Low Quiescent Current.
Very Low Dropout Voltage of 470mV at 300mA
Output Current (3.0V Output Version)
1.3V, 1.5V, 1.8V, 2.5V, 2.8V, 3.0V, 3.3V Output
Voltage.
Short Circuit and Thermal Protection.
±2% Output Tolerance.
Miniature Package: SOT-23-5 and SOT-89-5
AIC1731 is a 300mA low noise, low dropout
linear regulator, and is housed in small SOT-23-5
and SOT-89-5 package. The device is in the “ON”
state when the SHDN pin is set to logic high
level. An internal P-MOSFET pass transistor is
used to achieve 470mV low dropout voltage at
300mA load current. It offers high precision
output voltage of ±2%. The quality of low
„ APPLICATIONS
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quiescent current and low dropout voltage makes
this device ideal for battery power applications.
PDA
DSC
Notebook
Pagers
Personal Communication Equipment
Cordless Telephones
Portable Instrumentation
Portable Consumer Equipment
Battery Powered Systems
The internal reverse bias protection eliminates
the requirement for a reverse voltage protection
diode. The high ripple rejection and low noise of
AIC1731 provide enhanced performance for
critical applications. The noise bypass pin can be
connected an external capacitor to reduce the
output noise level.
„ TYPICAL APPLICATION CIRCUIT
VIN
VIN
CIN
VOUT
+
+
1μF
GND
COUT
1μF
(Note1)
BP
SHDN
SHDN
VOUT
CBP
AIC1731
0.1μF
Low Noise Low Dropout Linear Regulator
Analog Integrations Corporation
Si-Soft Research Center
DS-1731G-02
20090928
3A1, No.1, Li-Hsin Rd. I , Science Park , Hsinchu 300, Taiwan , R.O.C.
TEL: 886-3-5772500
FAX: 886-3-5772510
www.analog.com.tw
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AIC1731
„ ORDERING INFORMATION
AIC1731-XXXXXX
PIN CONFIGURATION
PACKING TYPE
TR: TAPE & REEL
BG: BAG
PACKAGE TYPE
V: SOT-23-5
X5: SOT-89-5
P: LEAD FREE COMMERCIAL
G: GREEN PACKAGE
OUTPUT VOLTAGE
13: 1.3V
15: 1.5V
18: 1.8V
25: 2.5V
28: 2.8V
30: 3.0V
33: 3.3V
SOT-23-5
TOP VIEW
1: VIN
2: GND
3: SHDN
4: BP
5: VOUT
SOT-89-5
TOP VIEW
1: VIN
2: GND
3: SHDN
4: BP
5: VOUT
5
1
4
2
5
1
3
4
2
3
(Of a unit of 0.1V within the voltage range from 1.3V to 3.3V, additional
voltage versions for this product line may be available on demand with
prior consultation with AIC.)
Example: AIC1731-18PX5TR
Æ 1.8V Version, in SOT-89-5 Lead Free Package & Tape &
Reel Packing Type
AIC1731-18PVTR
Æ 1.8V Version, in SOT-23-5 Lead Free Package & Tape &
Reel Packing Type
• SOT-89-5 Marking
Part No.
AIC1731-13CX5
AIC1731-15CX5
AIC1731-18CX5
AIC1731-25CX5
AIC1731-28CX5
AIC1731-30CX5
AIC1731-33CX5
Marking
EH13
EH15
EH18
EH25
EH28
EH30
EH33
Part No.
AIC1731-13PX5
AIC1731-15PX5
AIC1731-18PX5
AIC1731-25PX5
AIC1731-28PX5
AIC1731-30PX5
AIC1731-33PX5
Marking
EH13P
EH15P
EH18P
EH25P
EH28P
EH30P
EH33P
Part No.
AIC1731-13GX5
AIC1731-15GX5
AIC1731-18GX5
AIC1731-25GX5
AIC1731-28GX5
AIC1731-30GX5
AIC1731-33GX5
Marking
EH13G
EH15G
EH18G
EH25G
EH28G
EH30G
EH33G
Part No.
AIC1731-13CV
AIC1731-15CV
AIC1731-18CV
AIC1731-25CV
AIC1731-28CV
AIC1731-30CV
AIC1731-33CV
Marking
ED13
ED15
ED18
ED25
ED28
ED30
ED33
Part No.
AIC1731-13PV
AIC1731-15PV
AIC1731-18PV
AIC1731-25PV
AIC1731-28PV
AIC1731-30PV
AIC1731-33PV
Marking
ED13P
ED15P
ED18P
ED25P
ED28P
ED30P
ED33P
Part No.
AIC1731-13GV
AIC1731-15GV
AIC1731-18GV
AIC1731-25GV
AIC1731-28GV
AIC1731-30GV
AIC1731-33GV
Marking
ED13G
ED15G
ED18G
ED25G
ED28G
ED30G
ED33G
• SOT-23-5 Marking
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AIC1731
„ ABSOLUTE MAXIMUM RATINGS
Supply Voltage
12V
Shutdown Terminal Voltage
8V
Noise Bypass Terminal Voltage
5V
Operating Temperature Range
-40ºC~85ºC
Maximum Junction Temperature
125°C
Storage Temperature Range
-65ºC~150ºC
Lead Temperature (Soldering, 10 sec)
Thermal Resistance Junction to Case, RθJC
260°C
SOT-23-5
130°C /W
SOT-89-5
30°C /W
Thermal Resistance Junction to Ambient, RθJA SOT-23-5
220°C /W
SOT-89-5
160°C /W
(Assume no ambient airflow, no heatsink)
Absolute Maximum Ratings are those values beyond which the life of a device may be impaired.
„
TEST CIRCUIT
Refer to TYPICAL APPLICATION CIRCUIT
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AIC1731
„
ELECTRICAL CHARACTERISTICS
(CIN=1μF, COUT=4.7μF, TJ=25°C, unless otherwise specified) (Note2)
PARAMETER
TEST CONDITIONS
SYMBOL MIN.
Quiescent Current
IOUT = 0mA, VIN = 3.6~7V
IQ
Standby Current
VIN = 3.6~7V, output OFF
ISTBY
GND Pin Current
IOUT = 0.1~300mA
IGND
Continuous Output Current
VIN = 5V
IOUT
Output Current Limit
VIN = 5V, VOUT = 0V
Output Voltage Tolerance
VIN = 5V, no load
Temperature Coefficient
TYP.
MAX.
UNIT
35
50
μA
0.1
μA
50
μA
300
mA
30
IIL
300
VOUT
-2
450
mA
2
%
TC
50
150
ppm/ºC
Line Regulation
VIN = VOUT(TYP) + 1V to 7V
ΔVLIR
3
10
mV
Load Regulation
VIN = VOUT + 1.2V (Vout≥ 2.0V)
VIN = VOUT + 1.7V (Vout≤ 1.9V)
IOUT = 0.1~300mA
ΔVLOR
10
30
mV
VDROP
470
570
800
1260
870
970
1200
1660
mV
VREF
1.23
Δn
0.46
RR
55
Dropout Voltage
IL=300mA
3.0V≤VOUT≤3.3V
2.5V≤VOUT≤2.9V
2.0V≤VOUT≤2.4V
1.3V≤VOUT≤1.9V
Noise Bypass Terminal Voltage
Output Noise
Ripple Rejection
CBP = 0.1μF, f = 1KHz,VIN = 5V
f = 1KHz, Ripple = 0.5VP-P,
V
μV
Hz
dB
CBP = 0.1μF
Shutdown Pin Current
I SHDN
Shutdown Pin Voltage (ON)
Output ON
Shutdown Pin Voltage (OFF)
Output OFF
Shutdown Exit Delay Time
Thermal Shutdown Temperature
CBP=0.1μF, COUT=1μF,
IOUT=30mA
0.1
1.6
μA
V
0.6
V
Δt
300
μS
TSD
155
ºC
Note 1: To avoid output oscillation, aluminum electrolytic output capacitor is recommended and ceramic
capacitor is not suggested.
Note 2: Specifications are production tested at TA=25°C. Specifications over the -40°C to 85°C operating
temperature range are assured by design, characterization and correlation with Statistical Quality
Controls (SQC).
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AIC1731
„ TYPICAL PERFORMANCE CHARACTERISTICS
700
AIC1731-33
1.5V
50
600
3.3V
40
500
VDROP (mV)
Quiescent Current (μA)
60
30
20
TA=80°C
TA=50°C
400
300
200
10
TA=20°C
100
TA=-40°C
0
0
1
2
3
4
5
6
0
7
0
50
VIN (V)
Fig. 1 Quiescent Current vs. VIN
100
150
200
250
300
ILOAD (mA)
Fig. 2 VDROP vs. ILOAD
44.0
800
Short Circuit Current (mA)
43.5
Ground Current (μA)
43.0
42.5
3.3V
42.0
1.5V
41.5
41.0
40.5
40.0
VIN=6V
TA=25°C
39.5
39.0
0
50
100
150
200
250
700
600
500
400
3.3V
300
1.5V
200
100
0
300
0
1
2
3
5
6
Input Voltage (V)
Fig. 3 Ground Current vs. ILOAD
Fig. 4 Input Voltage vs. Short Circuit Current
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46
45
AIC1731-33
Quiescent Current (μA)
44
Ground Current (μA)
4
ILOAD (mA)
300mA
43
150mA
42
41
30mA
40
1.5V
44
3.3V
42
40
38
VIN=5V
36
39
-40
-20
0
20
40
60
80
Temperature (°C)
Fig. 5 Ground Current vs. Temperature
100
-40
-20
0
20
40
60
80
100
Temperature (°C)
Fig. 6 Quiescent Current vs Temperature
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AIC1731
„ TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
3.50
640
AIC1731-33
3.45
620
Current Limit (mA)
Output Voltage (V)
3.40
3.35
3.30
3.25
3.20
600
580
560
540
520
3.15
3.10
-20
0
20
40
60
80
480
-40
100
Temperature (°C)
Fig. 7 Output Voltage vs. Temperature
-20
0
20
40
60
80
100
Temperature (°C)
Fig. 8 Current Limit vs. Temperature
1.30
500
AIC1731-15
450
1.25
o
AIC1731-25
TA=85 C
o
TA=50 C
400
VDROP (mV)
350
1.20
o
TA=-40 C
VDROP (V)
VIN=5V
500
VIN=5V
-40
VIN=7V
VIN=6V
1.15
TA=20
o
1.10 TA=50oC
o
TA=-40 C
250
o
TA=20 C
200
150
o
1.05
300
TA=85 C
100
50
1.00
0
0
50
100
150
200
250
300
0
50
100
IOUT(mA)
Fig. 9
150
200
VDROP vs. ILOAD
Fig. 10
300
VDROP vs. ILOAD
CBP=0.1μF
CBP=0.1μF
COUT=4.7μF
VOUT
250
IOUT(mA)
IOUT=180mA
IOUT=120mA
Fig. 11 Load Transient Response
COUT=1μF
VOUT
IOUT=180mA
IOUT=120mA
Fig. 12 Load Transient Response
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AIC1731
„ TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
Vin=VOUT+2V
Vin=VOUT+2V
Vin=VOUT+1V
Vin=VOUT+1
VOUT=3.3V
CIN=1μF, COUT=1μF
VOUT=3.3V
CBP=0.1μF
Iout=50mA
Iout=50mA
Fig. 13 Line Transient Response
Fig. 14 Line Transient Response
VIN=Vout+2V
VIN=Vout+2V
Vin=Vout+1V
VOUT=1.5V
CIN=1μF, COUT=4.7μF
CBP=0.1μF
VIN=Vout+1V
CIN=1μF, COUT=1μF
CIN=1μF, COUT=4.7μF
VOUT=1.5V
CBP=0.1μF
CBP=0.1μF
Iout=50mA
Iout=50mA
Fig. 15 Line Transient Response
Fig. 16 Line Transient Response
0
IOUT=30mA
CBP=0.1μF
-10
VOUT
-20
VSHDN
PSRR(dB)
COUT=1μF
COUT=1uF ; CBP=0.1uF
IL=300mA
IL=100mA
-30
-40
IL=100mA
-50
IL=30mA
-60
10
Fig. 17 Shutdown Exit Time
100
1000
10000
100000
1000000
1E7
Frequency(Hz)
Fig. 18 Ripple Rejection
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AIC1731
„ BLOCK DIAGRAM
VIN
Current
Limiting
BP
VREF
1.23V
SHDN
Power
Shutdown
- Error
Amp.
+
VOUT
Thermal
Limiting
GND
„ PIN DESCRIPTIONS
PIN 1 : VIN
-
Power supply input pin. Bypass
with a 1μF capacitor to GND
PIN 2 : GND - Ground pin.
PIN 3 : SHDN - Active-Low shutdown input pin.
PIN 4 : BP
- Noise bypass pin. An external
bypass capacitor connected to
BP pin reduces noises at the
output.
PIN 5 : VOUT - Output pin. Sources up to 300
mA.
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AIC1731
„ DETAILED DESCRIPTIONS OF TECHNICAL TERMS
DROPOUT VOLTAGE (VDROP)
The dropout voltage is defined as the difference
between the input voltage and output voltage at
which the output voltage drops 100mV. Below
this value, the output voltage will fall as the input
voltage reduces. It depends on the load current
and junction temperature.
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 changes from VIN = VOUT +
1V to VIN = 7V and IOUT = 1mA.
LOAD REGULATION
Load regulation is the ability of the regulator to
maintain a constant output voltage as the load
current changes. A pulsed measurement with an
input voltage set to VIN = VOUT + VDROP can
minimize temperature effects. The load regulation
„
is specified by the output current ranging from
0.1mA to 300mA.
CURRENT LIMIT (IIL)
AIC1731 includes a current limiting, which
monitors and controls the maximum output
current if the output is shorted to ground. This
can protect the device from being damaged.
THERMAL PROTECTION
Thermal sensor protects device when the
junction temperature exceeds TJ= +155ºC. It
signals shutdown logic, turning off pass transistor
and allowing IC to cool down. After the IC’s
junction temperature cools by 15ºC, the thermal
sensor will turn the pass transistor back on.
Thermal protection is designed to protect the
device in the event of fault conditions. For a
continuous operation, do not exceed the absolute
maximum junction-temperature rating of TJ=
150ºC, or damage may occur to the device.
APPLICATION INFORMATION
INPUT-OUTPUT CAPACITORS
Linear regulators require input and output
capacitors to maintain stability. Input capacitor at
1μF with a 1uF aluminum electrolytic output
capacitor is suggested.
NOISE BYPASS CAPACITOR
0.1μF bypass capacitor at BP pin reduces output
voltage noise. And the BP pin has to connect a
capacitor to GND.
POWER DISSIPATION
The AIC1731 obtains thermal-limiting circuitry,
which is designed to protect the device against
overload condition. For continuous load
condition,
maximum
rating
of
junction
temperature must not be exceeded. It is
important to pay more attention in thermal
resistance. It includes junction to case, junction
to ambient. The maximum power dissipation of
AIC1731 depends on the thermal resistance of
its case and circuit board, the temperature
difference between the die junction and ambient
air, and the rate of airflow. The rate of
temperature rise is greatly affected by the
mounting pad configuration on the PCB, the
board material, and the ambient temperature.
When the IC mounting with good thermal
conductivity is used, the junction temperature
will be low even when large power dissipation
applies.
The power dissipation across the device is
P = IOUT (VIN-VOUT).
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AIC1731
The maximum power dissipation is:
PMAX =
(TJ-max - TA )
Rθ JA
Where TJ-max is the maximum allowable junction
temperature (125°C), and TA is the ambient
temperature suitable in application.
As a general rule, the lower temperature is, the
better reliability of the device is. So the PCB
mounting pad should provide maximum thermal
conductivity to maintain low device temperature.
GND pin performs a dual function for providing
an electrical connection to ground and
channeling heat away. Therefore, connecting
the GND pin to ground with a large pad or
ground plane would increase the power
dissipation and reduce the device temperature.
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AIC1731
„ PHYSICAL DIMENSIONS (unit: mm)
z
SOT-89-5
D
A
C
L
H
E
D1
e
S
Y
M
B
O
L
e1
B
SOT-89-5
MILLIMETERS
MIN.
MAX.
A
1.40
1.60
B
0.36
0.56
C
0.35
0.44
D
4.40
4.60
D1
1.50
1.83
E
2.29
2.60
e
1.50 BSC
e1
3.00 BSC
H
3.94
4.25
L
0.80
1.20
Note: 1. Refer to JEDEC TO-243AA.
2. Dimension "D" does not include mold flash, protrusions
or gate burrs. Mold flash, protrusion or gate burrs shall not
exceed 6 mil per side.
3. Dimension "E" does not include inter-lead flash or protrusions.
4. Controlling dimension is millimeter, converted inch
dimensions are not necessarily exact.
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AIC1731
z
SOT-23-5
D
A
A
E
E1
S
Y
M
B
O
L
e
e1
SEE VIEW B
WITH PLATING
MILLIMETERS
MIN.
MAX.
A
0.95
1.45
A1
0.05
0.15
A2
0.90
1.30
b
0.30
0.50
c
0.08
0.22
D
2.80
3.00
E
2.60
3.00
E1
1.50
1.70
e
0.95 BSC
e1
1.90 BSC
c
A
A2
b
SOT-25
A1
BASE METAL
SECTION A-A
L
L1
0.60 REF
0°
8°
0.25
θ
0.60
0.30
GAUGE PLANE
SEATING PLANE
θ
L
L1
VIEW B
Note : 1. Refer to JEDEC MO-178AA.
2. Dimension "D" does not include mold flash, protrusions
or gate burrs. Mold flash, protrusion or gate burrs shall not
exceed 10 mil per side.
3. Dimension "E1" does not include inter-lead flash or protrusions.
4. Controlling dimension is millimeter, converted inch
dimensions are not necessarily exact.
Note:
Information provided by AIC is believed to be accurate and reliable. However, we cannot assume responsibility for use of any
circuitry other than circuitry entirely embodied in an AIC product; nor for any infringement of patents or other rights of third parties
that may result from its use. We reserve the right to change the circuitry and specifications without notice.
Life Support Policy: AIC does not authorize any AIC product for use in life support devices and/or systems. Life support devices or
systems are devices or systems which, (I) are intended for surgical implant into the body or (ii) support or sustain life, and whose
failure to perform, when properly used in accordance with instructions for use provided in the labeling, can be reasonably
expected to result in a significant injury to the user.
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