Data Sheet

[AP1157ADVXX]
AP1157ADVXX
14V Input / 100mA Output LDO Regulator
1. General Description
The AP1157ADVXX is a low dropout linear regulator with ON/OFF control, which can supply 100mA load
current. The IC is an integrated circuit with a silicon monolithic bipolar structure. The output voltage, trimmed
with high accuracy, is available from 1.3 to 5.5V in 0.1V steps. The output capacitor is available to use a small
0.22μF ceramic capacitor. The over current, thermal and reverse bias protections are integrated, and also the
package is small and thin type, HSON0202-6. The IC is designed for space saving requirements.
2. Features
 Available to use a small 0.22μF ceramic capacitor
 Dropout Voltage
 Output Current
VDROP=160mV at 100mA
100mA, Peak 200mA
1.5% or 50mV
 High Precision output voltage
 High ripple rejection ratio
80dB at 1kHz
70dB at 10kHz
 Wide operating voltage range
 Very low quiescent current
2.1V to 14.0V
IQUT=75A at IOUT=0mA
 On/Off control (High active)
 Built-in Short circuit protection, thermal shutdown
 Built-in reverse bias over current protection
 Available very low noise application
 Very small surface mount package
HSON0202-6
3. Applications
 Any Electronic Equipment
 Battery Powered Systems
 Mobile Communication
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[AP1157ADVXX]
4. Table of Contents
1.
2.
3.
4.
5.
6.
7.
General Description ....................................................................................................................................1
Features .......................................................................................................................................................1
Applications ................................................................................................................................................1
Table of Contents ........................................................................................................................................2
Block Diagram ............................................................................................................................................3
Ordering Information ..................................................................................................................................4
Pin Configurations and Functions ...............................................................................................................5
■ Pin Configurations .....................................................................................................................................5
■ Function .....................................................................................................................................................5
8. Absolute Maximum Ratings .......................................................................................................................6
9. Recommended Operating Conditions .........................................................................................................6
10. Electrical Characteristics .........................................................................................................................7
■ Electrical Characteristics of Ta=Tj=25C .................................................................................................7
■ Electrical Characteristics of Ta=-40C~85C .........................................................................................10
11. Description ............................................................................................................................................13
11.1 Input /Output Capacitors ....................................................................................................................13
11.2 Temperature Characteristics ..............................................................................................................16
11.3 Ripple Rejection ................................................................................................................................18
11.4 ON/OFF Transient .............................................................................................................................19
11.5 Load Transient ...................................................................................................................................20
11.6 Line Transient ....................................................................................................................................21
11.7 Output Noise Characteristics .............................................................................................................22
11.8 Stability ..............................................................................................................................................23
11.9 Operating Region and Power Dissipation ..........................................................................................25
11.10 ON/OFF Control ............................................................................................................................26
11.11 Noise Bypass ..................................................................................................................................27
11.12 The notes of the evaluation when output terminal is short-circuit to GND ...................................27
12. Definition of term ..................................................................................................................................28
13. Test Circuit ............................................................................................................................................29
14. Package ..................................................................................................................................................30
■ Outline Dimensions .................................................................................................................................30
15. Revise History .......................................................................................................................................31
IMPORTANT NOTICE ...................................................................................................................................32
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5. Block Diagram
Vin
Vout
Over Heat &
Over Current
Protection
500kΩ
320kΩ
Control
Circuit
Vcont
Bandgap
Reference
GND
Np
Figure 1. Block Diagram
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[AP1157ADVXX]
6. Ordering Information
AP1157ADVXX
-40 to 85°C
HSON0202-6
・ Output Voltage Code
For product name, please check the below chart. Please contact your authorized ASAHI KASEI
MICRODEVICES representative for voltage availability.
AP1157ADVXX
Output voltage code
Table 1. Standard Voltage Version, Output Voltage & Voltage Code
XX
VOUT
XX
VOUT
18
1.8
30
3.0
25
2.5
33
3.3
Table 2. Optional Voltage Version, Output Voltage & Voltage Code
XX
VOUT
XX
VOUT
XX
13
1.3
23
2.3
35
14
1.4
24
2.4
36
15
1.5
26
2.6
37
16
1.6
27
2.7
38
17
1.7
28
2.8
39
19
1.9
29
2.9
40
20
2.0
31
3.1
41
21
2.1
32
3.2
42
22
2.2
34
3.4
43
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-4-
XX
50
54
VOUT
3.5
3.6
3.7
3.8
3.9
4.0
4.1
4.2
4.3
VOUT
5.0
5.4
XX
44
45
46
47
48
49
55
-
VOUT
4.4
4.5
4.6
4.7
4.8
4.9
5.5
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2015/01
[AP1157ADVXX]
7. Pin Configurations and Functions
VIN
GND
VOUT
■ Pin Configurations
6
5
4
1
2
3
VCONT
GND
Np
(Top View)
■ Function
Pin No.
Pin Description
Internal Equivalent Circuit
Description
Vcont
On/Off Control Terminal
1
VCONT > 1.8V : ON
VCONT < 0.35V : OFF
320k
Vcont
500k
The pull-down resister (500k) is built-in.
2, 5
GND
-
GND Terminal
Np
Noise Bypass Terminal
3
Np
Connect a bypass capacitor between GND.
Vout
Vin
4
Vout
Output Terminal
Vref
6
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Vin
-
Input Terminal
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[AP1157ADVXX]
8. Absolute Maximum Ratings
Parameter
Supply Voltage
Symbol
VccMAX
Reverse Bias
VrevMAX
min
-0.4
Max
16
Unit
V
Condition
-0.4
6
V
Vout≦2.0V
-0.4
12
V
2.1V≦Vout
VnpMAX
-0.4
5
V
Np pin Voltage
VcontMAX
-0.4
16
V
Control pin Voltage
Tj
150
Junction temperature
C
Tstg
-55
150
Storage Temperature Range
C
PD
760
mW
Power Dissipation
(Note 1)
Note 1. PD must be decreased at rate of -6.6mW/C for operation above 25C. Thermal resistance JA=
151C/W.
WARNING: The maximum ratings are the absolute limitation values with the possibility of the IC breakage.
When the operation exceeds this standard quality cannot be guaranteed.
9. Recommended Operating Conditions
Parameter
Symbol
min
typ
max
Unit
Operating Temperature Range
Ta
-40
-
85
C
Operating Voltage Range
VOP
2.1
-
14
V
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Condition
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[AP1157ADVXX]
10. Electrical Characteristics
■ Electrical Characteristics of Ta=Tj=25C
The parameters with min or max values will be guaranteed at Ta=Tj=25C.
Parameter
Output Voltage
Line Regulation
Symbol
Vout
Load Regulation
LoaReg
Dropout Voltage (Note 2)
Vdrop
Output Current (Note 3)
Peak Output Current (Note 3)
LinReg
Iout
IoutPEAK
(Vin=VoutTYP+1V,Vcont=1.8V,Ta=Tj=25C)
Condition
min
typ
max
Unit
Iout = 5mA
V
(Table 3, Table 4)
Vin = 5V
0.0
5.0
mV
Iout = 5mA ~ 50mA
mV
(Table 3, Table 4)
Iout = 5mA ~ 100mA
mV
Iout = 50mA
90
160
mV
Iout = 100mA
160
280
mV
100
mA
When (VoutTYP0.9)
150
200
mA
Iq
Iout = 0mA
-
75
120
A
Istandby
Vcont = 0V
-
0.0
0.1
A
Ignd
Iout = 50mA
-
1.5
2.7
mA
Control Current
Icont
Vcont = 1.8V
-
5.0
15.0
Control Voltage
Vcont
Vout ON state
1.8
-
-
A
V
Vout OFF state
-
-
0.35
V
Vnp
-
1.26
-
V
Vout/Ta
-
35
-
Short Circuit Current
IShort
-
200
-
Output Noise Voltage
(VoutTYP=3.0V)
Vnoise
Cout=1.0F, Cnp=0.01F
Iout=30mA
-
38
-
Cout=1.0F, Cnp=0.001F
Iout=10mA, f=1kHz
-
80
-
f=10kHz
-
70
-
Cout=1.0F, Cnp=0.001F
Vcont: Pulse Wave (100Hz)
Vcont ON  Vout95%
point
-
35
-
Quiescent Current
Standby Current
Ground Pin Current
Control Terminal
Reference Value
Np Terminal Voltage
Output Voltage / Temp.
Ripple Rejection
(VoutTYP=3.0V)
Rise Time
(VoutTYP=3.0V)
RR
tr
ppm
/C
mA
V
Rms
dB
s
Note 2. For Vout  2.0V , no regulations.
Note 3. The output current is limited by power dissipation.
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Table 3. Standard Voltage Version
Load Regulation
Output Voltage
Part Number
AP1157ADV18
AP1157ADV25
AP1157ADV30
AP1157ADV33
AP1157ADV50
AP1157ADV54
015000843-E-00
min
V
1.750
2.450
2.950
3.250
4.925
5.319
typ
V
1.800
2.500
3.000
3.300
5.000
5.400
Iout = 50mA
max
V
1.850
2.550
3.050
3.350
5.075
5.481
-8-
typ
mV
5
6
6
7
9
9
max
mV
12
14
15
16
20
21
Iout = 100mA
typ
mV
11
13
15
16
21
22
max
mV
26
31
35
37
50
52
2015/01
[AP1157ADVXX]
Table 4. Optional Voltage Version
Load Regulation
Output Voltage
Part Number
AP1157ADV13
AP1157ADV14
AP1157ADV15
AP1157ADV16
AP1157ADV17
AP1157ADV19
AP1157ADV20
AP1157ADV21
AP1157ADV22
AP1157ADV23
AP1157ADV24
AP1157ADV26
AP1157ADV27
AP1157ADV28
AP1157ADV29
AP1157ADV31
AP1157ADV32
AP1157ADV34
AP1157ADV35
AP1157ADV36
AP1157ADV37
AP1157ADV38
AP1157ADV39
AP1157ADV40
AP1157ADV41
AP1157ADV42
AP1157ADV43
AP1157ADV44
AP1157ADV45
AP1157ADV46
AP1157ADV47
AP1157ADV48
AP1157ADV49
AP1157ADV51
AP1157ADV52
AP1157ADV53
AP1157ADV55
015000843-E-00
min
typ
max
Iout = 50mA
typ
max
V
1.250
1.350
1.450
1.550
1.650
1.850
1.950
2.050
2.150
2.250
2.350
2.550
2.650
2.750
2.850
3.050
3.150
3.349
3.447
3.546
3.644
3.743
3.841
3.940
4.038
4.137
4.235
4.334
4.432
4.531
4.629
4.728
4.826
5.024
5.122
5.221
5.418
V
1.300
1.400
1.500
1.600
1.700
1.900
2.000
2.100
2.200
2.300
2.400
2.600
2.700
2.800
2.900
3.100
3.200
3.400
3.500
3.600
3.700
3.800
3.900
4.000
4.100
4.200
4.300
4.400
4.500
4.600
4.700
4.800
4.900
5.100
5.200
5.300
5.500
V
1.350
1.450
1.550
1.650
1.750
1.950
2.050
2.150
2.250
2.350
2.450
2.650
2.750
2.850
2.950
3.150
3.250
3.451
3.553
3.654
3.756
3.857
3.959
4.060
4.162
4.263
4.365
4.466
4.568
4.669
4.771
4.872
4.974
5.177
5.278
5.380
5.583
mV
5
5
5
5
5
5
5
5
6
6
6
6
6
6
6
7
7
7
7
7
7
7
8
8
8
8
8
8
8
8
8
9
9
9
9
9
9
-9-
mV
10
10
11
11
11
12
12
12
13
13
13
14
14
14
15
15
15
16
16
17
17
17
17
18
18
18
18
19
19
19
20
20
20
20
20
20
21
Iout = 100mA
typ
max
mV
10
10
10
11
11
11
12
12
12
13
13
14
14
14
15
15
16
16
16
17
17
17
18
18
18
19
19
19
20
20
20
21
21
21
21
22
22
mV
22
23
24
25
25
27
28
28
29
30
31
32
33
34
34
36
37
38
39
40
40
41
42
43
43
44
45
46
46
47
48
49
49
50
50
51
53
2015/01
[AP1157ADVXX]
■ Electrical Characteristics of Ta=-40C~85C
The parameters with min or max values will be guaranteed at Ta=-40 ~ 85C.
Parameter
Output Voltage
Symbol
Vout
(Vin=VoutTYP+1V,Vcont=1.8V,Ta=-40 ~ 85C)
Condition
Min.
Typ.
Max.
Unit
Iout = 5mA
V
(Table 5, Table 6)
Line Regulation
LinReg
Vin = 5V
Load Regulation
LoaReg
Dropout Voltage (Note 4)
Vdrop
Output Current (Note 5)
Peak Output Current (Note 5)
Iout = 5mA ~ 50mA
Iout = 5mA ~ 100mA
0.0
8.0
mV
(Table 5, Table 6)
mV
mV
Iout = 50mA
-
90
205
mV
Iout = 100mA
-
160
360
mV
-
-
100
mA
110
200
-
mA
Iout
IoutPEAK
-
When (VoutTYP0.9)
Iq
Iout = 0mA
-
75
145
A
Istandby
Vcont = 0V
-
0.0
0.5
A
Ignd
Iout = 50mA
-
1.5
3.3
mA
Control Current
Icont
Vcont = 1.8V
-
5.0
15.0
Control Voltage
Vcont
Vout ON state
1.8
-
-
A
V
Vout OFF state
-
-
0.35
V
Vnp
-
1.26
-
V
Vout/Ta
-
35
-
Short Circuit Current
IShort
-
200
-
Output Noise Voltage
(VoutTYP=3.0V)
Vnoise
Cout=1.0F, Cnp=0.01F
Iout=30mA
-
38
-
Cout=1.0F, Cnp=0.001F
Iout=10mA, f=1kHz
-
80
-
f=10kHz
-
70
-
Cout=1.0F, Cnp=0.001F
Vcont: Pulse Wave (100Hz)
Vcont ON → Vout95%
point
-
35
-
Quiescent Current
Standby Current
Ground Pin Current
Control Terminal
Reference Value
Np Terminal Voltage
Output Voltage / Temp.
Ripple Rejection
(VoutTYP=3.0V)
Rise Time
(VoutTYP=3.0V)
RR
tr
ppm
/C
mA
V
Rms
dB
s
Note 4. For Vout  2.0V , no regulations.
Note 5. The output current is limited by power dissipation.
General Note: Parameter with only typical value is for reference only.
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[AP1157ADVXX]
Table 5. Standard Voltage Version
Load Regulation
Output Voltage
Part Number
AP1157ADV18
AP1157ADV25
AP1157ADV30
AP1157ADV33
AP1157ADV50
AP1157ADV54
015000843-E-00
min
V
1.720
2.420
2.920
3.217
4.875
5.265
typ
V
1.800
2.500
3.000
3.300
5.000
5.400
Iout = 50mA
max
V
1.880
2.580
3.080
3.383
5.125
5.535
- 11 -
typ
mV
5
6
6
7
9
9
max
mV
18
21
22
23
30
31
Iout = 100mA
typ
mV
11
13
15
16
21
22
max
mV
42
53
62
66
94
101
2015/01
[AP1157ADVXX]
Table 6. Optional Voltage Version
Load Regulation
Output Voltage
Part Number
AP1157ADV13
AP1157ADV14
AP1157ADV15
AP1157ADV16
AP1157ADV17
AP1157ADV19
AP1157ADV20
AP1157ADV21
AP1157ADV22
AP1157ADV23
AP1157ADV24
AP1157ADV26
AP1157ADV27
AP1157ADV28
AP1157ADV29
AP1157ADV31
AP1157ADV32
AP1157ADV34
AP1157ADV35
AP1157ADV36
AP1157ADV37
AP1157ADV38
AP1157ADV39
AP1157ADV40
AP1157ADV41
AP1157ADV42
AP1157ADV43
AP1157ADV44
AP1157ADV45
AP1157ADV46
AP1157ADV47
AP1157ADV48
AP1157ADV49
AP1157ADV51
AP1157ADV52
AP1157ADV53
AP1157ADV55
015000843-E-00
min
typ
max
Iout = 50mA
typ
max
V
1.220
1.320
1.420
1.520
1.620
1.820
1.920
2.020
2.120
2.220
2.320
2.520
2.620
2.720
2.820
3.020
3.120
3.312
3.412
3.510
3.605
3.705
3.805
3.900
3.986
4.085
4.184
4.283
4.382
4.481
4.580
4.679
4.777
4.972
5.070
5.167
5.362
V
1.300
1.400
1.500
1.600
1.700
1.900
2.000
2.100
2.200
2.300
2.400
2.600
2.700
2.800
2.900
3.100
3.200
3.400
3.500
3.600
3.700
3.800
3.900
4.000
4.100
4.200
4.300
4.400
4.500
4.600
4.700
4.800
4.900
5.100
5.200
5.300
5.500
V
1.380
1.480
1.580
1.680
1.780
1.980
2.080
2.180
2.280
2.380
2.480
2.680
2.780
2.880
2.980
3.180
3.280
3.488
3.588
3.690
3.795
3.895
3.995
4.100
4.214
4.315
4.416
4.517
4.618
4.719
4.820
4.921
5.023
5.228
5.330
5.433
5.638
mV
5
5
5
5
5
5
5
5
6
6
6
6
6
6
6
7
7
7
7
7
7
7
8
8
8
8
8
8
8
8
8
9
9
9
9
9
9
- 12 -
mV
16
17
17
17
18
18
19
19
19
20
20
21
21
22
22
23
23
24
24
25
25
25
26
26
26
27
27
27
28
28
29
29
29
30
30
31
31
Iout = 100mA
typ
max
mV
10
10
10
11
11
11
12
12
12
13
13
14
14
14
15
15
16
16
16
17
17
17
18
18
18
19
19
19
20
20
20
21
21
21
21
22
22
mV
34
36
37
39
40
44
45
47
49
50
52
55
57
58
60
63
65
68
70
71
73
75
76
78
80
81
83
84
86
88
89
91
93
94
97
99
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2015/01
[AP1157ADVXX]
11. Description
11.1 Input /Output Capacitors
 Line Regulation
Test conditions
Vin
=VoutTYP+1V
Vin
Cin
1.0F
Vout
Vcont
Cnp
0.001F
 Iin vs Vin
 Quiescent Current
Iout=0mA
Iout=0mA
Iin (mA)
Cout
1.0F
Np
Vcont
1.8V
2.6
2.4
2.2
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
Iout=5mA
Vout=
1.5,2.0,3.0,4.0,5.0V
0
2
4
6
8
10
12 14
16
Vin (V)
 Peak Output Current
Vout (V)
 Load Regulation
6.0
5.5
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
Vout= 5.0V
4.0V
3.0V
2.0V
1.5V
0
50
100
150
200
250
300
Iout (mA)
 GND Pin Current
015000843-E-00
Test conditions
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2015/01
Ignd (mA)
[AP1157ADVXX]
Vin
=VoutTYP+1V
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
Vin
Cin
1.0F
Vcont
Vout
50
Cout
1.0F
Np
Vcont
1.8V
0
Iout=5mA
Cnp
0.001F
100
Iout (mA)
 Dropout Voltage
 Standby Current (Off state)
2.1V  VoutTYP
Vcont=0V
0
1.E-06
-20
1.E-07
Istanby (A)
Vdrop (mV)
-40
-60
-80
-100
-120
1.E-08
1.E-09
1.E-10
-140
-160
1.E-11
0
50
100
0
Iout (mA)
4
6
8
10
12 14
16
Vin (V)
 Control Current
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2
 Control Current, ON/OFF Point
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[AP1157ADVXX]
 Vout vs Vin Regulation Point
Test conditions
2.1V  VoutTYP
Vin
=VoutTYP+1V
Vin
Cin
1.0F
Vout
Vcont
Iout=5mA
Cout
1.0F
Np
Vcont
1.8V
Cnp
0.001F
 Vout vs Vin Regulation Point
VoutTYP=1.5V
VoutTYP=2.0V
1.54
1.52
1.50
1.48
1.46
1.44
1.42
1.40
1.38
1.36
1.34
2.04
2.02
2.00
1.98
1.96
1.94
1.92
1.90
1.88
1.86
1.84
Iout=0,50,100mA
Vout (V)
Vout (V)
 Vout vs Vin Regulation Point
1.5
1.6
1.7
1.8
1.9
2.0
Iout=0,50,100mA
1.8
1.9
2.0
Vin (V)
2.1
2.2
2.3
Vin (V)
 Reverse Bias Current
Test conditions
Vin=0V, Vcont=0V
Vin=0V
Vin
Cin
1.0F
Vcont
Vcont
0V
015000843-E-00
- 15 -
Irev
Vout
Cout
1.0F
Np
Vrev
Cnp
0.001F
2015/01
[AP1157ADVXX]
11.2 Temperature Characteristics
 Vout
Test conditions
VoutTYP=3.0V
Vin
=VoutTYP+1V
20
Vin
Vout
Iout=5mA
ΔVout (mV)
10
Cin
1.0F
0
Vcont
Cout
1.0F
Np
-10
-20
Vcont
1.8V
35.15 ppm/℃
Cnp
0.001F
-30
-40
-40 -20
0
20
40
60
80
100
T a （℃）
 Peak Output Current
 GND Pin Current
Vout=VoutTYP  0.9
250
6.0
200
5.0
Ignd(mA)
IoutPEAK(mA)
Iout=100mA
Iout=50mA
Iout=30mA
7.0
150
100
4.0
3.0
2.0
50
1.0
0.0
0
-40 -20
0
20
40
60
-40 -20
80 100
0
40
60
80
100
T a(°C)
Ta(℃)
 Dropout Voltage
 Quiescent Current
2.1V  VoutTYP
Iout=0mA
Vdrop(mV)
20
300
Iout=100mA
Iout=50mA
250
Iout=30mA
200
150
100
50
0
-40 -20
0
20
40
60
80
100
T a(°C)
Test conditions
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[AP1157ADVXX]
Vin
=VoutTYP+1V
Cin
1.0F
Vin
Vout
Vcont
 Line Regulation
VoutTYP=3.0V
Vin = 5V
0
Cout
1.0F
Np
Vcont
1.8V
 Load Regulation
Iout=5mA
Cnp
0.001F
20
15
-10
LinReg(mV)
LoaReg(mV)
10
-20
Iout=30mA
-30
Iout=50mA
-40
Iout=100mA
5
0
-5
-10
-50
-15
-20
-60
-40 -20
0
20
40
60
80
-40 -20
100
0
20
40
60
80
100
60
80
100
T a(℃)
T a(℃)
 ON/OFF Point
Vcont(V)
 Control Current
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
Vout_ON
Vout_OFF
-40 -20
0
20
40
T a（℃）
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[AP1157ADVXX]
11.3 Ripple Rejection
The ripple rejection (R.R) characteristic depends on the characteristic and the capacitance of the capacitor
connected at the output side. Also it depends on the output voltage. The R.R characteristic at 50kHz or more
varies greatly with the capacitor on the output side and PCB pattern. If necessary, please check stability during
operation.
 Cout=0.22F, 0.47F, 1.0F, 2.2F
Test conditions
Vripple
Vin(DC)=VoutTYP+1.5V
200mVp-p
C
o
u
t
=
0
.
2
2

F
0.47F
1.0F
2.2F
C
n
p
=
0
.
0
0
1

F
Ripple Rejection (dB)
 R.R vs Iout : Frequency=1kHz
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
0
20
40
60
80
Vcont
Vout
Iout=10mA
Cout
1.0F
Np
Vcont
1.8V
Cnp
0.001F
 Iout=10mA, 20mA, 50mA, 100mA
I
o
u
t
=
1
0
0
m
A
C
n
p
=
0
.
0
1

F
0
.
1

F
 R.R vs Low Vin :
100
50mA
20mA
Frequency=1kHz
10mA
Iout=100mA
Iout=50mA
Iout=20mA
Iout=10mA
Iout=1mA
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
0
Iout (mA)
015000843-E-00
f=100Hz 1MHz
Ripple Rejection (dB)
 Cnp=0.00F, 0.01F, 0.1F
Vin
0.2
0.4
0.6
0.8
1
Vin-Vout(Typ) (V)
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[AP1157ADVXX]
11.4 ON/OFF Transient
Test conditions
Vin
=VoutTYP+1V
Voltage
Vcont
Cin
1.0F
Rise Time
Vcont=0V2V
(f=100Hz)
Vout×95%
Vout
Vin
Vcont
Vout
Iout=30mA
Cout
1.0F
Np
Cnp
0.001F
Time
 Cout=0.47F, 1.0F, 2.2F
 Cout=0.47F, 1.0F, 2.2F
 Cnp=0.001F, 0.01F, 0.1F
The rise time of the regulator depends on Cout and Cnp.
The fall time depends on Cout.
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[AP1157ADVXX]
11.5 Load Transient
Increase the load side capacitor when the load change is fast or when there is a large current change. In
addition, at no load, supplying small load current to ground can reduce the voltage change.
Test conditions
Vin
=VoutTYP+1V
Cin
1.0F
Vin
Vcont
Vcont
1.8V
Iout
ONOFF
Vout
Cout
1.0F
Np
Cnp
0.001F
 Iout=0100mA, 5105mA
 Iout=100mA0mA, 105mA5mA
 Cout=0.47F, 1.0F, 2.2F : Iout=0mA100mA
 Cout=0.47F, 1.0F, 2.2F : Iout=100mA0mA
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11.6 Line Transient
 Cnp=0.001F, 0.01F, 0.1F
Test conditions
Vin
=VoutTYP+1V+2V
Vin
Vcont
Vcont
1.8V
 Cout=0.1F, 0.22F, 0.47F
015000843-E-00
Vout
Iout=30mA
Cout
1.0F
Np
Cnp
0.001F
 Cout=1.0F, 2.2F
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[AP1157ADVXX]
11.7 Output Noise Characteristics
Increase Cnp to decrease the noise. The recommended Cnp capacitance is 0.01F  0.1F.
The amount of noise increases with the higher output voltages.
 Vout vs Noise
Test conditions
80
Vin
=VoutTYP+1V
Vin
Noise (uVrms)
70
60
Cin
1.0F
50
Vout
Vcont
Iout=30mA
Cout
1.0F
Np
40
Vcont
1.8V
30
20
10
Cnp
0.01F
BPF=400Hz 80kHz
0
1.0
2.0
3.0
4.0
5.0
Vout(Typ) (V)
 Cnp vs Noise
 Iout vs Noise
Cout=0.22uF
300
Cout=0.47uF
Cout=1.0uF
Noise (uVrms)
Noise (uVrms)
250
200
Cout=2.2uF
150
100
50
0
1p
10p
Cout=0.47uF
Cout=1.0uF
Cout=2.2uF
0
100p 1000p 0.01u 0.1u
20
40
60
80
100
Iout (mA)
Cnp (F)
015000843-E-00
Cout=0.22uF
70
65
60
55
50
45
40
35
30
25
20
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2015/01
[AP1157ADVXX]
11.8 Stability
Linear regulators require input and output capacitors in order to maintain the regulator's loop stability. If
0.22F or larger capacitor is connected to the output side, the IC provides stable operation at any
voltage(1.3VVoutTYP5.5V). (The capacitor must be larger than 0.22F at all temperature and voltage range)
If the capacitor with high Equivalent Series Resistance (ESR) (several ohms) is used, such as tantalum
capacitor etc., the regulator may oscillate. Please select parts with low ESR.
Due to the parts are uneven, please enlarge the capacitance as much as possible. With larger capacity, the
output noise decreases more. In addition, the response to the load change, etc. can be improved. The IC won’t
be damaged by enlarging the capacity. A recommended value of application is Cin=Cout0.47F Ceramic
Capacitance.
TK705xxS
TK707xxS
AP1157ADV
TK706xxH
TK708xxH
Vin
Cin0.47F
Vout
Cout0.47F
Cnp
0.001F
GND
Figure 2. Recommended value of the application
100
Unstable area
ESR (Ω)
10
1
S table area
0.1
Unstable area
0.01
0
20
40 60 80 100
Iout (mA)
1.3V  VoutTYP  5.5V, Cout=0.1F Cout=0.22F
Figure 3. Output Voltage, Output Current vs. Stable Operation Area
Figure 3 shows stable operation with a ceramic capacitor of 0.22F. Since it may oscillate if ESR is large, we
recommend using ceramic capacitor. The stability of the regulator improves with larger output capacitor (the
stable operation area extends.) Please use the capacitor with larger capacitance as possible.
For evaluation
Kyocera: CM05B104K10AB, CM05B224K10AB, CM105B104K16A, CM105B224K16A, CM21B225K10A
Murata: GRM36B104K10, GRM42B104K10, GRM39B104K25, GRM39B224K10, GRM39B105K6.3
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[AP1157ADVXX]
The input capacitor is necessary in case the battery voltage drops, the power supply impedance increases, or
the distance to the power supply is far. 1 input capacitor might be necessary for each IC or for several ICs. It
depends on circuit condition. Please confirm the stability by each circuit.
Figure 4. Ceramic Capacitance vs. Voltage, Temperature
Generally, a ceramic capacitor has both temperature characteristic and voltage characteristic. Please consider
both characteristics when selecting the part. The B curves are the recommend characteristics.
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[AP1157ADVXX]
11.9 Operating Region and Power Dissipation
The power dissipation of the device depends on the junction temperature. Therefore, the package dissipation is
assumed to be an internal limitation. The package itself does not have enough heat radiation characteristic due
to the small size. Heat runs away by mounting IC on PCB. This value changes by the material, copper pattern
etc. of PCB. The overheating protection operates when there is a lot of loss inside the regulator (Ambient
temperature high, heat radiation bad, etc.). The output current and the output voltage will drop when the
protection circuit operates. When joint temperature (Tj) reaches the set temperature, IC stops the operation.
However, operation begins at once when joint temperature (Tj) decreases.
・The thermal resistance when mounted on PCB
The chip joint temperature during operation is shown by Tj=JA×Pd+Ta. Joint part temperature (Tj) of
/AP1157AEVxx is limited around 140C with the overheating protection circuit. Pd is the value when the
overheating protection circuit starts operation.
When you assume the ambient temperature to be 25C,
140=JA  Pd(W)+25
JA  Pd=115
 JA =115/Pd (C /W)
Figure 5. Example of mounting substrate
PCB Material: Two layer glass epoxy substrate
(x=30mm, y=30mm,t=1.0mm,Copper pattern thickness 35um)
AP1157ADV (HSON0202-6)
Please do the derating with -6.6mW/C at Pd=760mW and 25C or higher. Thermal resistance (JA) is
151C/W.
・Method of obtaining Pd easily
Connect output terminal to GND(short circuited), and measure the input current by increasing the input
voltage gradually up to 10V. The input current will reach the maximum output current, but will decrease soon
according to the chip temperature rising, and will finally enter the state of thermal equilibrium (natural air
cooling).
The input current and the input voltage of this state will be used to calculate the Pd.
Pd(mW)  Vin (V)  Iin (mA)
When the device is mounted, mostly achieve
015000843-E-00
AP1157ADVxx (SON0202-6): 500mW or more
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2015/01
[AP1157ADVXX]
Procedure (When mounted on PCB).
Pd(mW)
2
Pd
D Pd
5
3
4
0
0
25
50
75C
Ta(°C)
100
140C
1.Find Pd (VinIin when the output is short-circuited).
2. Plot Pd against 25C.
3. Connect Pd to the point corresponding to the 140C
with a straight line.
4. Pull a vertical line from the maximum operating
temperature in your design (e.g., 75C).
5. Read the value of Pd against the point at which the
vertical line intersects the derating curve(DPd).
6.DPd(Vinmax-Vout)=Iout (at 75C)
Figure 6. Determine Pd
The maximum output current at the highest operating temperature will be Iout  DPd  (Vinmax-Vout).
Please use the device at low temperature with better radiation. The lower temperature provides better quality.
11.10
ON/OFF Control
It is recommended to turn the regulator off when the circuit following the regulator is not operating. A design
with small electric power loss can be implemented. Because the control current is small, it is possible to
control it directly by CMOS logic.
Control Terminal Voltage
ON/OFF State
(Vcont)
Vcont > 1.8V
ON
Vcont < 0.35V
OFF
・Parallel Connected ON/OFF Control
Vout
5V
5V
Vin
3.3V
3.3V
R
2.0V
2.0V
On/Off
Cont.
Figure 7. Parallel Connected ON/OFF Control
Figure shows the multiple regulators being controlled by a single ON/OFF control signal. There is fear of
overheating, because the power loss of the low voltage side (AP1157ADV20) is large. The series resistor (R)
is put in the input line of the low output voltage regulator in order to prevent over-dissipation. The voltage
dropped across the resistor reduces the large input-to-output voltage across the regulator, reducing the power
dissipation in the device. When the thermal sensor works, a decrease of the output voltage, oscillation, etc.
may be observed.
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[AP1157ADVXX]
11.11 Noise Bypass
The noise characteristics depend on the capacitance on the Np terminal. A standard value is Cnp=0.001F.
Increase Cnp in a design with important output noise requirements. The IC will not be damaged even the
capacitor value is increased. The on/off switching speed changes depending on the Np terminal capacitance.
The switching speed slows when the capacitance is large.
11.12 The notes of the evaluation when output terminal is short-circuit to GND
By the resonance phenomenon by Cout (C ingredient) and the short circuit line (L ingredient), which are
attached to an output terminal, an output terminal changes with minus potential. In order that Parasitism Tr
arises within Bip IC, and a latch rise phenomenon may occur within IC when the worst if it goes into an output
terminal's minus side, it results in damage by fire (white smoke) and breakage of a package. (f0 = 1 / 2 (L C))
The above-mentioned resonance phenomenon appears notably in a ceramic capacitor with the small ESR
value, etc. A resonance phenomenon can be reduced by connecting resistance (around 2ohms or more) in
series with a short circuit line. Thereby, the latch rise phenomenon within IC can be prevented.
Generally, when using tantalum or large electrolysis capacitor, the influence of resonance phenomenon can be
reduced due to the large ESR (2ohms or more).
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[AP1157ADVXX]
12. Definition of term
■ Relating Characteristic
・Output voltage (Vout)
The output voltage is specified with Vin= VoutTYP+1V and Iout=5mA
・Output current (Iout)
Output current, which can be used continuously (It is the range where overheating protection of the IC does not
operate.)
・Peak maximum output current (IoutPEAK)
The rated output current is specified under the condition where the output voltage drops 90% by increasing the
output current, compared to the value specified at Vin=VoutTYP+1V.
・Dropout voltage (Vdrop)
It is an I/O voltage difference when the circuit stops the stable operation by decreasing the input voltage. It is
measured when the output voltage drops 100mV from its nominal value by decreasing the input voltage
gradually.
・Line Regulation (LinReg)
It is the fluctuations of the output voltage value when the input voltage is changed.
・Load Regulation (LoaReg)
It is the fluctuations of the output voltage value when the input voltage is assumed to be Vout TYP +1V, and the
load current is changed.
・Ripple Rejection (R.R)
Ripple rejection is the ability of the regulator to attenuate the ripple content of the input voltage at the output.
It is measured with the condition of
Vin=Vout+1.5V. Ripple rejection is the ratio of the ripple content
between the output vs. input and is expressed in dB.
・Standby current (Istandby)
It is an input current, which flows to the control terminal, when the IC is turned off.
■ Relating Protection Circuit
・Over Current Protection
It is a function to protect the IC by limiting the output current when excessive current flows to IC, such as the
output is connected to GND, etc.
・Thermal Protection
It protects the IC not to exceed the permissible power consumption of the package in case of large power loss
inside the regulator. The output is turned off when the chip reaches around 140C, but it turns on again when
the temperature of the chip decreases.
・Reverse Voltage Protection
Reverse voltage protection prevents damage due to the output voltage being higher than the input voltage. This
fault condition can occur when the output capacitor remains charged and the input is reduced to zero, or when
an external voltage higher than the input voltage is applied to the output side
Generally, a LDO regulator has a diode in the input direction from an output. If an input falls from an output in
an input-GND short circuit etc. and this diode turns on, current will flow for an input terminal from an output
terminal. In the case of excessive current, IC may break. In order to prevent this, it is necessary to connect a
Schottky Diode etc. outside. This product is equipped with reverse bias over-current prevention, and excessive
current does not flow in to IC. Therefore, no need to connect diode outside.
Vin
015000843-E-00
Vout
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[AP1157ADVXX]
13. Test Circuit
AP1157ADVxx
(SON0202-6)
Iin
A
Vin
GND
Vout
6
Vin
Cin
Cout
Iout
5
4
Vin
GND
Vout
Vcont
GND
Np
Vout
V
1.0F
Vcont
GND
Np
1.0F
1
Icont
A
Vcont
Cnp
2
3
*2pin
and
5pin
connected internally.
are
0.001F
Figure 8. Test Circuit
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[AP1157ADVXX]
14. Package
■ Outline Dimensions
（Unit: mm)
Mark
xxx
1
1.8
4
2.00±0.07
6
3
2.00±0.07
Lot No.
0~0.05
0.20±0.03
0.75max
1 Pin Mark
1
3
6
4
(0.70) 0.25±0.05
0.65 0.20±0.05
(0.70)
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[AP1157ADVXX]
15. Revise History
Date
(YY/MM/DD)
15/01/21
015000843-E-00
Revision
Page
Contents
00
-
First edition
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2015/01
[AP1157ADVXX]
IMPORTANT NOTICE
0. Asahi Kasei Microdevices Corporation (“AKM”) reserves the right to make changes to the
information contained in this document without notice. When you consider any use or application of
AKM product stipulated in this document (“Product”), please make inquiries the sales office of
AKM or authorized distributors as to current status of the Products.
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in this document in your product design or applications. AKM ASSUMES NO LIABILITY FOR
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SUCH INFORMATION IN YOUR PRODUCT DESIGN OR APPLICATIONS.
2. The Product is neither intended nor warranted for use in equipment or systems that require
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compatibility of the Product. Please use the Product in compliance with all applicable laws and
regulations that regulate the inclusion or use of controlled substances, including without limitation,
the EU RoHS Directive. AKM assumes no liability for damages or losses occurring as a result of
noncompliance with applicable laws and regulations.
6. Resale of the Product with provisions different from the statement and/or technical features set forth
in this document shall immediately void any warranty granted by AKM for the Product and shall not
create or extend in any manner whatsoever, any liability of AKM.
7. This document may not be reproduced or duplicated, in any form, in whole or in part, without prior
written consent of AKM.
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