AIC AIC1722A-18XXA 300ma low dropout linear regulator Datasheet

AIC1722A
300mA Low Dropout Linear Regulator


FEATURES

Low Dropout Voltage of 470mV at 300mA
Output Current (3.0V Output Version).

Guaranteed 300mA Output Current.

Maximum Input Voltage is 8V

Low Ground Current at 55A.

2% Accuracy Output Voltage of 1.5V/1.8V/
2.0V /2.5V /2.7V/ 3.0V/ 3.3V/ 3.5V/ 3.7V/ 3.8V/
5.0V/ 5.2V.

Needs only 1F for Stability.

Current and Thermal Limiting.

DESCRIPTION
The AIC1722A is a 3-pin low dropout linear
regulator. The superior characteristics of the
AIC1722A include zero base current loss,
very low dropout voltage, and 2% accuracy
output voltage. Typical ground current
remains approximately 55A, from no load to
maximum loading conditions. Dropout voltage
at 300mA output current is exceptionally low.
Output current limiting and thermal limiting are
built in to provide maximal protection to the
AIC1722A against fault conditions.
The AIC1722A comes in the popular 3-pin
SOT-89, TO-92 and SOT-23 packages.
APPLICATIONS

Voltage Regulator for CD-ROM Drivers.

Voltage Regulator for LAN Cards.

Voltage Regulator for Microprocessor.

Wireless Communication Systems.

Battery Powered Systems.
 TYPICAL APPLICATION CIRCUIT
VOUT
VIN
AIC1722A
VIN
+
CIN
1F
GND
VOUT
+
COUT
1F
(Note1)
Low Dropout Linear Regulator
Analog Integrations Corporation
Si-Soft Research Center
DS-1722AG-04 20120615
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
1
AIC1722A

ORDERING INFORMATION
AIC1722A-XXXXX XX
PIN C ON FIGU RATION
PACKING TYPE
TR : REEL
BG: BAG
PACKAGE TYPE
U : SOT-23
XA: SOT-89
XT: SOT-89
ZT: TO-92
ZL : TO-92
P: Lead Fre e Commercial
G: Green Package
OU TPUT VOLTAGE
15: 1.5V
18: 1.8V
20: 2.0V
25: 2.5V
27: 2.7V
30: 3.0V
33: 3.3V
35: 3.5V
37: 3.7V
38: 3.8V
50: 5.0V
52: 5.2V
Exa mple:
AIC 1722A-18PXATR
 1.8V Version, in SOT-89 Package &
Tape & R eel Packing Type(lead
free)
AIC 1722A-18GXATR
 1.8V Version, in SOT-89 L ead Free
Package & Ta pe & Reel Packing
Type (green)
3
SOT-23 (U)
TOP VIEW
1: GN D
2: VOUT
3: VIN
1
2
SOT-89 (XA)
TOP VIEW
1: GN D
2. VIN
3. VOUT
SOT-89 (XT)
TOP VIEW
1: VOUT
2. GN D
3. VIN
TO-92 (ZTBG)
TOP VIEW
1: GN D
2. VIN
3. VOUT
1
2
3
1
2
3
1
2
3
1 23
* Straight lead option ava ilable in bag packing type only.
* Refer to physical dimensions for lead pitch.
TO-92 (ZTTR)
TOP VIEW
1: GN D
2. VIN
3. VOUT
1
2
3
1 2 3
* Formed lea d option available in reel packing type.
* Refer to physical dimensions for lead pitch.
TO-92 (ZLBG)
TOP VIEW
1: VIN
2. GN D
3. VOUT
1
2
3
1 23
* Straight lead option ava ilable in bag packing type only.
* Refer to physical dimensions for lead pitch.
TO-92 (ZLBG)
TOP VIEW
1: VIN
2. GN D
3. VOUT
1
2
3
1 2 3
* Formed lea d option available in reel packing type.
* Refer to physical dimensions for lead pitch.
2
AIC1722A



SOT-23 MARKING
Part No.
PU
GU
Part No.
PU
GU
AIC1722A-15XU
BN15P
BN15G
AIC1722A-33XU
BN33P
BN33G
AIC1722A-18XU
BN18P
BN18G
AIC1722A-35XU
BN35P
BN35G
AIC1722A-20XU
BN20P
BN20G
AIC1722A-37XU
BN37P
BN37G
AIC1722A-25XU
BN25P
BN25G
AIC1722A-38XU
BN38P
BN38G
AIC1722A-27XU
BN27P
BN27G
AIC1722A-50XU
BN50P
BN50G
AIC1722A-30XU
BN30P
BN30G
AIC1722A-52XU
BN52P
BN52G
SOT-89 MARKING
Part No.
PXA
AIC1722A-15XXA
AL15P
AIC1722A-18XXA
GXA
Part No.
PXT
GXT
AL15G
AIC1722A-15XXT
BA15P
BA15G
AL18P
AL18G
AIC1722A-18XXT
BA18P
BA18G
AIC1722A-20XXA
AL20P
AL20G
AIC1722A-20XXT
BA20P
BA20G
AIC1722A-25XXA
AL25P
AL25G
AIC1722A-25XXT
BA25P
BA25G
AIC1722A-27XXA
AL27P
AL27G
AIC1722A-27XXT
BA27P
BA27G
AIC1722A-30XXA
AL30P
AL30G
AIC1722A-30XXT
BA30P
BA30G
AIC1722A-33XXA
AL33P
AL33G
AIC1722A-33XXT
BA33P
BA33G
AIC1722A-35XXA
AL35P
AL35G
AIC1722A-35XXT
BA35P
BA35G
AIC1722A-37XXA
AL37P
AL37G
AIC1722A-37XXT
BA37P
BA37G
AIC1722A-38XXA
AL38P
AL38G
AIC1722A-38XXT
BA38P
BA38G
AIC1722A-50XXA
AL50P
AL50G
AIC1722A-50XXT
BA50P
BA50G
AIC1722A-52XXA
AL52P
AL52G
AIC1722A-52XXT
BA52P
BA52G
ABSOLUTE MAXIMUM RATINGS
Input Supply Voltage ...................................................…………..…….................. -0.3~8V
Operating Temperature Range …………….....………........…………................ -40C~ 85C
Junction Temperature ……………………………………………………………………... 125C
Storage Temperature Range ....................……......................………............. -65C~150C
Lead Temperature (Soldering. 10sec) …………………………………………………… 260C
Thermal Resistance Junction to Case
SOT-23……………………………….130C /W
SOT-89…..………………..…………..30C /W
TO-92…………………………………120C /W
Thermal Resistance Junction to Ambient
SOT-23..………………………………180C /W
(Assume no ambient airflow, no heatsink)
SOT-89………………………………. 160C /W
TO-92…………………………………150C /W
Absolute Maximum Ratings are those values beyond which the life of a device may be impaired.
3
AIC1722A

TEST CIRCUIT
Refer to the TYPICAL APPLICATION CIRCUIT.

ELECTRICAL CHARACTERISTICS
(TA=25C, CIN=1F, COUT=1F, unless
otherwise specified.) (Note 2)
PARAMETER
Output Voltage
TEST CONDITIONS
VIN=8V, No Load
MIN.
TYP.
-2
MAX.
UNIT
+2
%
mV
IL=1mA,
Line Regulation
Load Regulation
(Note 3)
Current Limit
(Note 4)
Dropout Voltage
(Note 5)
1.4VVOUT3.2V
VIN=4V~8V
3
10
3.3VVOUT5.2V
VIN=5.5V~8V
3
15
1.4VVOUT3.9V
VIN=5V
7
20
4.0VVOUT5.2V
VIN=7V
15
40
IL=0.1~300mA
VIN=7V, VOUT=0V
IL=300mA
300
mV
mA
4.0VVOUT5.2V
400
500
3.0VVOUT3.9V
470
570
2.5VVOUT2.9V
570
670
2.0VVOUT2.4V
800
900
1.4VVOUT1.9V
1260
1360
mV
IO=0.1mA~IMAX
Ground Current
Thermal Shutdown
Hysteresis
1.4VVOUT3.9V
VIN=5~8V
55
80
4.0VVOUT5.2V
VIN=7~8V
55
80
Guaranteed by design
20
A
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).
Note 3: Regulation is measured at constant junction temperature, using pulse testing with a low ON time.
Note 4: Current limit is measured by pulsing a short time.
Note 5: Dropout voltage is defined as the input to output differential at which the output voltage drops
100mV below the value measured with a 1V differential.
4
AIC1722A
TYPICAL PERFORMANCE CHARACTERISTICS
2.52
2.00
AIC1722A-18
AIC1722A-25
1.95
2.51
V OUT (V)
1.90
VOUT (V)
1.85
1.80
1.75
2.50
2.49
2.48
1.70
2.47
1.65
1.60
-40
-20
0
20
40
60
80
100
2.46
-40
-20
o
Temperature ( C)
Fig. 1 VOUT vs. Temperature
0
20
40
60
80
100
Temperature (C)
Fig. 2 VOUT vs. Temperature
5.30
3.40
AIC1722A-52
AIC1722A-33
3.35
3.30
V OUT (V)
VOUT (V)
5.25
3.25
5.20
3.20
5.15
3.15
3.10
-40
-20
0
20
40
60
80
100
5.10
-40
Temperature (C)
Fig. 3 VOUT vs. Temperature
60
-20
0
20
40
60
80
100
Temperature (C)
Fig. 4 VOUT vs. Temperature
70
AIC1722A-25
AIC1722A-18
58
56
Ground Current (A)
Ground Current(A)

ILOAD =0mA
54
52
50
ILOAD =300mA
48
46
44
ILOAD=100mA
65
ILOAD=100mA
60
ILOAD=0mA
55
50
ILOAD=300mA
42
40
45
-40
-20
0
20
40
60
Temperature(C)
Fig. 5 Ground Current vs. Temperature
80
-40
-20
0
20
40
60
80
Temperature (C)
Fig. 6 Ground Current vs. Temperature
5
AIC1722A
TYPICAL PERFORMANCE CHARACTERISTICS
60
75
(Continued)
AIC1722A-52
AIC1722A-33
58
70
Ground Current (A)
Ground Current (A)
80
65
ILOAD = 0mA
60
ILOAD = 300mA
55
50
ILOAD = 100mA
45
ILOAD=0mA
56
ILOAD=100mA
54
52
50
ILOAD=300mA
48
40
-40
-20
0
20
40
60
46
-40
80
Temperature (C)
0
20
40
60
80
Fig. 8 Ground Current vs. Temperature
AIC1722A-18
60 AIC1722A - 25
60
Ground Current (A)
Ground Current (A)
70
-20
Temperature (C)
Fig. 7 Ground Current vs. Temperature
50
40
30
20
50
40
30
20
10
10
0
0
0
1
2
3
4
5
6
7
VIN (V)
Fig. 9 Ground Current vs. VIN
0
8
1
2
3
4
5
6
7
8
7
8
V IN (V)
Fig. 10 Ground Current vs. VIN
70
70
AIC1722A-33
AIC1722A-52
60
60
Ground Current (uA)
Ground Current (A)

50
40
30
20
50
40
30
20
10
10
0
0
0
1
2
3
4
5
6
7
VIN (V)
Fig. 11 Ground Current vs. VIN
8
0
1
2
3
4
5
6
V IN (V)
Fig.12 Ground Current vs. VIN
6
AIC1722A
TYPICAL PERFORMANCE CHARACTERISTICS
AIC1722A-25
AIC1722A-18
900
V DROP (mV)
VDROP (V)
T=80C
400
800
T=20°C
T=-40°C
700
600
T=50C
300
T=20C
200
T=-40C
T=80°C
100
T=50°C
500
0
400
0
100
50
150
200
250
0
300
50
100
150
200
ILOAD (mA)
I LOAD (mA)
Fig. 13 VDROP vs. ILOAD
Fig. 14 VDROP vs. ILOAD
360
300
AIC1722A-33
250
300
AIC1722A-52
T=50C
300
250
240
V DROP (mV)
VDROP (mV)
(Continued)
500
1000
T=80C
T=20C
180
T=-40C
120
T=50C
200
T=80C
150
100
T=20C
50
60
T=-40C
0
0
0
60
120
180
240
300
0
50
100
150
200
250
300
I LOAD (mA)
ILOAD (mA)
Fig. 16 VDROP vs. ILOAD
Fig. 15 VDROP vs. ILOAD
540
AIC1722A
530
Currnet Limit (mA)

V IN=7V
520
510
V IN=6V
500
490
480
V IN=5V
470
V IN=4V
460
-40
-20
0
20
40
60
80
Temperature (C)
Fig. 17 Current Limit vs. Temperature
7
AIC1722A

BLOCK DIAGRAM
VIN
VOUT
CURRENT
LIMITING
ERROR
AMP
+
-
+
THERMAL
SHUTDOWN
1.235V
Reference
GND

PIN DESCRIPTIONS
VOUT PIN - Output pin.
GND PIN - Power GND.
VIN PIN - Power Supply Input.
8
AIC1722A

APPLICATION INFORMATION
INPUT-OUTPUT CAPACITORS
Linear regulators require input and output
capacitors to maintain stability. Input capacitor at
1F with 1uF aluminum electrolytic output
capacitor is recommended.
POWER DISSIPATION
The AIC1722A 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
AIC1722A 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).
The maximum power dissipation is:
(T
- TA )
PMAX  J-max
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.
9
AIC1722A

PHYSICAL DIMENSIONS

SOT-23
(unit: mm)
D
A
A
E
E1
e
e1
SEE VIEW B
WITH PLATING
c
A
A2
b
BASE METAL
0.25
A1
SECTION A-A
GAUGE PLANE
SEATING PLANE
L1
VIEW B
S
Y
M
B
O
L
θ
L
Note: 1. Refer to JEDEC MO-178.
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.
SOT-23
MILLIMETERS
MIN.
MAX.
A
0.95
1.45
A1
0.00
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
L
θ
0.60
0.30
0.60 REF
L1
0°
8°
10
AIC1722A
SOT-89
D
A
C
H
E
D1
L

e
S
Y
M
B
O
L
e1
B1
B
SOT-89
MILLIMETERS
MIN.
MAX.
A
1.40
1.60
B
0.44
0.56
B1
0.36
0.48
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
0.89
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.
11
AIC1722A
TO-92 (Straight lead option available in Bag packing type only)
E
b
S
D
S
Y
M
B
O
L
A
j
TO-92
MILLIMETERS
MIN.
MAX.
A
4.32
5.33
b
0.36
0.47
D
4.45
5.20
E
3.18
4.19
e
2.42
2.66
e1
1.15
1.39
j
3.43
L
12.70
S
2.03
2.66
L

Note: 1. Refer to JEDEC TO-226.
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 "A" does not include inter-lead flash or protrusions.
4. Controlling dimension is millimeter, converted inch
dimensions are not necessarily exact.
e1
e
12
AIC1722A

TO-92 (Formed lead option available in Reel packing)
A
W
B
E
F
P1
P
e
φD
T
SYMBOL
W
A
B
E
F
SPEC.
1 8 .0 ± 0 .2
9 .0 ± 0 .2
6 .0 ± 0 .2 0
1 6 .0 ± 0 .5
1 9 .0 ± 0 .5
SYMBOL
P
P1
D
e
T
SPEC.
1 2 .7 B S C
1 2 .7 B S C
4 .0 ± 0 .2
2 .5 B S C
0 .6 ± 0 .1
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.
13