Anachip AP1122 1a low dropout positive regulator Datasheet

AP1122
1A Low Dropout Positive Regulator
„ Features
„ General Description
- 1.3V maximum dropout at full load current
- Fixed 1.2V+ 2% output voltage
- Fast transient response
- Output current limiting
- Built-in thermal shutdown
- Good noise rejection
- Pb-Free Packages: SOT223, TO263, TO252,
TO220, SOT89
AP1122 is a low dropout positive fixed-mode
regulator with minimum of 1A output current
capability. The product is specifically designed to
provide well-regulated supply for low voltage IC
applications such as high-speed bus termination
and low current 1.2V logic supply. AP1122 is also
well suited for other applications such as VGA
cards. AP1122 is guaranteed to have lower than
1.3V dropout at full load current making it ideal to
provide well-regulated outputs of 1.2 output voltage
with 2.5V input voltage supply.
„ Applications
- PC peripheral
- Communication
„ Ordering Information
AP 1122 X X
Package
Packing
E : SOT223-3L
K : TO263-3L
D : TO252-3L
T : TO220-3L
Y : SOT89-3L
Blank : Tube
A : Taping
Low Dropout Regulator
„ Typical Circuit
2.5V
C1
100uF
Vin
Vout
1.2V/1A
C2
100uF
GND
Tab is Vout
This datasheet contains new product information. Anachip Corp. reserves the rights to modify the product specification without notice. No liability is assumed as a result of the use of
this product. No rights under any patent accompany the sale of the product.
Rev.1.0 Oct 21, 2004
1/10
AP1122
1A Low Dropout Positive Regulator
„ Connection Diagram
3 PIN SOT223
3 PIN TO252 / TO263
( Top View )
( Top View )
3
Vin
2
Vout
1
GND
Vin
3
2
Vout
1
Tab is Vout
GND
Tab is Vout
3 PIN SOT89
3 PIN TO220
3
Vin
3
Vin
2
Vout
2
Vout
1
GND
1
GND
Tab is Vout
Tab is Vout
„ Block Diagram
Vin
3
2
Vout
1
GND
+
+
-
1.2V
+
CURRENT
LIMIT
+
-
Thermal
Shutdown
Anachip Corp.
www.anachip.com.tw
Rev.1.0 Oct 21, 2004
2/10
AP1122
1A Low Dropout Positive Regulator
„ Pin Descriptions
NAME
GND
I/O
I
PIN #
1
Vout
O
2
Vin
I
3
FUNCTION
Ground Pin
The output of the regulator. A minimum of 10uF capacitor (0.15Ω ≤ ESR ≤ 20Ω)
must be connected from this pin to ground to insure stability.
The input pin of regulator. Typically a large storage capacitor (0.15Ω ≤ ESR ≤
20Ω) is connected from this pin to ground to insure that the input voltage does
not sag below the minimum dropout voltage during the load transient response.
This pin must always be 1.3V higher than Vout in order for the device to regulate
properly.
„ Absolute Maximum Ratings
Symbol
Vin
PD
TST
TOP
Parameter
DC Supply Voltage
Power Dissipation
Storage Temperature
Operating Junction Temperature Range
Rating
Unit
-0.3 to 12
V
Internally Limited
o
-65 to +150
C
o
0 to +150
C
„ Electrical Characteristics (Under Operating Conditions)
PARAMETER
Output Voltage
Line Regulation
Load Regulation
Dropout Voltage
(VIN-VOUT)
Current Limit
Minimum Load
Current
Thermal Regulation
CONDITIONS
2.5V≦VIN≦12V, TJ=25oC
o
IO=10mA, 2.5V<VIN<12V, TJ=25 C
VIN=2.5V~12V,Vadj=0,0mA<Io<1A, TJ=25oC
(Note 1,2)
MIN
1.176
1.3
IOUT = 1A ,∆VOUT=0.1%VOUT
(VIN-VOUT) = 5V
o
TYP
1.2
MAX
1.224
0.2
UNIT
V
%
1
%
1.4
V
1. 1
o
0 C≦Tj≦125 C
o
TA=25 C, 30ms pulse
F=120Hz,COUT=25uF Tantalum, IOUT=1A,
Ripple Rejection
VIN=VOUT+3V
Temperature Stability IO=10mA
θ JA Thermal
SOT89
Resistance Junction- SOT-223
TO-252
to-Ambient (No heat
TO-220/263
sink ;No air flow)
SOT89 : Control Circuitry/Power Transistor
θ JC Thermal
SOT-223 : Control Circuitry/Power Transistor
TO-263 : Control Circuitry/Power Transistor
Resistance
TO-252 : Control Circuitry/Power Transistor
Junction-to-Case
TO-220 : Control Circuitry/Power Transistor
A
5
10
mA
0.008
0.04
%/W
60
70
dB
0.5
300
117
92
85
100
15
0.65/2.7
10
0.65/2.7
%
o
C/W
o
C/W
Note1: See thermal regulation specifications for changes in output voltage due to heating effects. Line and load regulation are measured
at a constant junction temperature by low duty cycle pulse testing. Load regulation is measured at the output lead = 1/18” from the
package.
Note2: Line and load regulation are guaranteed up to the maximum power dissipation of 15W. Power dissipation is determined by the
difference between input and output differential and the output current. Guaranteed maximum power dissipation will not be
available over the full input/output range.
Note3: Quiescent current is defined as the minimum output current required in maintaining regulation. At 12V input/output differential the
device is guaranteed to regulate if the output current is greater than 10mA.
Anachip Corp.
www.anachip.com.tw
Rev.1.0 Oct 21, 2004
3/10
AP1122
1A Low Dropout Positive Regulator
„ Typical Performance Characteristics
0.20
2. 0
Output Voltage Deviation (%)
1. 8
1. 6
Dropout Voltage (V)
1. 4
1. 2
0
I load=800mA
-0.20
Tj = 25 oC
1. 0
-0.40
0. 8
Tj = 125 oC
0. 6
-0.80
0. 4
0. 2
0
0
250
500
Output Current (mA)
750
-1
1000
-25
Dropout Voltage vs Output Current
0
25
50
Temperature (oC)
75
100
125
Load Regulation vs Temperature
2
1
0.8
1
0. 5
0
-0.5
-1
-1.5
-2
-50
-25
0
25
50
Temperature (oC)
75
100
125
150
Output Voltage Deviation (%)
Output Voltage Change (%)
1.5
0.6
0.4
0.2
0
2
4
7.5
Cin=1uF
Cout=10uF Tantalum
6.5
5.5
40
20
0
-20
-40
0
20
40
60
80
100 120 140 160 180 200
TIME (us)
6
8
10
Input Voltage (V)
12
Line Regulation
Load Current (A) Output Voltage Deviation (mV)
Output Voltage Deviation (mV) Input Voltage (V)
Percent Change in Output Voltage vs Temperature
Line Transient Response
30
C in = 1uF
C out = 10 uF Tantalum
Preload = 100mA
20
10
0
-10
-20
2
1
0
-1
0
10
20
30
40
50
TIME (us)
60
70
80
90
100
Load Transient Response
Anachip Corp.
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Rev.1.0 Oct 21, 2004
4/10
AP1122
1A Low Dropout Positive Regulator
„ Marking Information
(2) TO252-3L
(1) SOT223-3L
(Top view)
(Top view)
Logo
Logo
XXX
1122
1122
XXXX X
ID Code
Month: A~L = 01~12
Year: "1" = 2001
"2" = 2002
~
ID Code
Xth Week: 01~52
Year: "01" = 2001
"02" = 2002
~
(4) SOT89-3L
(3) TO220-3L
( Top view )
Identification Code
( See the table )
XX
XX
Date Code
Month: A~L
Year: 0~9
1
2
3
Logo
1122
XX XX X
ID code
Xth week: 01~52
Year: "01" = 2001
"02" = 2002
Identification code
Output version
JB
AP1122
~
(5) TO263-3L
( Top view )
Logo
1122
XX XX X
ID code
Xth week: 01~52
Year: "01" = 2001
"02" = 2002
~
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Rev.1.0 Oct 21, 2004
5/10
AP1122
1A Low Dropout Positive Regulator
„ Package Dimension
(1) SOT223
D
B1
E
1.6
H
6.4
1.6
3.7
K
Land Pattern Recommendation (Unit: mm)
B
Symbol
α
ß
c
A1
A
e1
ß
2.3
1.2
e
L
Seating Plane
Dimensions In Millimeters
Dimensions In Inches
Min.
Nom.
Max.
Min.
Nom.
Max.
A
1.50
1.65
1.80
0.059
0.065
0.071
A1
0.02
0.05
0.08
0.001
0.002
0.003
B
0.60
0.70
0.80
0.024
0.028
0.031
B1
2.80
-
3.40
0.110
-
0.134
c
0.28
0.30
0.32
0.011
0.012
0.013
D
6.30
6.50
6.70
0.248
0.256
0.264
E
3.30
3.50
3.70
0.130
0.138
0.146
e
2.3 Basic
0.091 Basic
e1
4.6 Basic
0.181 Basic
H
6.70
7.00
7.30
0.264
0.276
0.287
L
0.91
1.00
1.10
0.036
0.039
0.043
K
α
1.50
1.75
2.00
0.059
0.069
0.079
0°
5o
10°
0°
5o
10°
β
-
o
13
-
Anachip Corp.
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-
o
13
-
Rev.1.0 Oct 21, 2004
6/10
AP1122
1A Low Dropout Positive Regulator
(2) TO263
10.9
L3
3
L
15.7
D
9.1
L2
E
1.3
b
b2
2.54
Land Pattern Recommendation (Unit: mm)
C2
A
C
e
L1
Symbol
A
b
b2
C
C2
D
E
e
L
L1
L2
L3
Dimensions In Millimeters
Min.
Nom.
Max.
4.06
4.45
4.83
0.51
0.75
0.99
1.14
1.27
1.40
0.38 TYP.
1.14
1.27
1.40
8.65
9.15
9.65
9.65
9.97
10.29
2.54 BSC.
14.61
15.24
15.88
2.28
2.54
2.80
1.30
2.92
1.27
1.52
1.78
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Dimensions In Inches
Min.
Nom.
Max.
0.160
0.175
0.190
0.020
0.030
0.039
0.045
0.050
0.055
0.015 TYP.
0.045
0.050
0.055
0.341
0.380
0.575
0.360
0.393
0.100 BSC.
0.600
0.380
0.405
0.625
0.090
0.050
0.100
0.051
0.060
0.110
0.115
0.070
Rev.1.0 Oct 21, 2004
7/10
AP1122
1A Low Dropout Positive Regulator
(3) TO252
5.6
L2
E
7.2
D
11.0
5.6
b2
2.0
2.25
L1
1.2
Land Pattern Recommendation (Unit: mm)
e
e1
Notes:
1.
2.
Symbol
A
A1
b
b2
C
C1
D
E
e
e1
H
L
L1
L2
SEATING PLANE
A
L
SEE NOTE2
A1
C
H
C1
b
JEDEC Outline: TO-252 AB
Mils suggested for positive contact at mounting.
Dimensions In Millimeters
Min.
Nom.
Max.
2.18
2.29
2.39
1.02
1.15
1.27
0.61 TYP.
5.20
5.35
5.50
0.46
0.52
0.58
0.46
0.52
0.58
5.33
5.57
5.80
6.35
6.58
6.80
2.25 BSC.
4.50 BSC.
9.00
9.70
10.40
0.51
0.64
0.83
1.02
1.52
1.78
2.03
Anachip Corp.
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Dimensions In Inches
Min.
Nom.
Max.
0.086
0.090
0.094
0.040
0.045
0.050
0.024 TYP.
0.205
0.211
0.217
0.018
0.020
0.023
0.018
0.020
0.023
0.210
0.219
0.228
0.250
0.259
0.268
0.089 BSC.
0.177 BSC.
0.354
0.382
0.409
0.020
0.025
0.033
0.040
0.060
0.070
0.080
Rev.1.0 Oct 21, 2004
8/10
AP1122
1A Low Dropout Positive Regulator
(4) TO220
E
A
F
SEATING PLANE
Q
ΦP
L1
D
H1
L
b1
C
b
J1
e
e1
Symbol
A
b1
b
C
D
E
e
e1
F
H1
J1
L
L1
øP
Q
Dimensions In Millimeters
Min.
Nom.
Max.
3.55
4.20
4.85
1.14
1.46
1.78
0.51
0.83
1.14
0.31
0.72
1.14
14.20
15.35
16.50
9.70
10.20
10.70
2.29
2.54
2.79
4.83
5.08
5.33
0.51
0.95
1.40
5.84
6.35
6.86
2.03
2.48
2.92
12.72
13.72
14.72
3.66
5.00
6.35
3.53
3.81
4.09
2.54
2.98
3.43
Anachip Corp.
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Dimensions In Inches
Min.
Nom.
Max.
0.140
0.165
0.191
0.045
0.057
0.070
0.020
0.033
0.045
0.012
0.028
0.045
0.559
0.604
0.650
0.382
0.402
0.421
0.090
0.100
0.110
0.190
0.200
0.210
0.020
0.037
0.055
0.230
0.250
0.270
0.080
0.098
0.115
0.501
0.540
0.580
0.144
0.197
0.250
0.139
0.150
0.161
0.100
0.117
0.135
Rev.1.0 Oct 21, 2004
9/10
AP1122
1A Low Dropout Positive Regulator
(5) SOT89
1.7
HE
E
2.7
D1
1.3
L
1.9
0.4
1.5
0.9
Land Pattern Recommendation (Unit: mm)
e1
e
50(2x)
80(2x)
A
D
c
b
Symbol
A
b
b1
C
D
D1
e
e1
E
HE
L
b1
b
Dimensions In Millimeters
Min.
1.40
0.36
0.41
0.35
4.40
1.40
2.90
1.45
2.35
3.94
0.80
Nom.
1.50
0.42
0.47
0.39
4.50
1.60
3.00
1.50
2.48
-
Max.
1.60
0.48
0.53
0.43
4.60
1.75
3.10
1.55
2.60
4.25
1.20
Anachip Corp.
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Dimensions In Inches
Min.
0.055
0.014
0.016
0.014
0.173
0.055
0.114
0.057
0.093
0.155
0.031
Nom.
0.059
0.016
0.043
0.015
0.177
0.062
0.118
0.059
0.098
-
Max.
0.063
0.018
0.051
0.017
0.181
0.069
0.122
0.061
0.102
0.167
0.047
Rev.1.0 Oct 21, 2004
10/10
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