AP1157ADV25 概述
14V Input / 100mA Output LDO Regulator
AP1157ADV25 数据手册
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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
High Precision output voltage
High ripple rejection ratio
1.5% or 50mV
80dB at 1kHz
70dB at 10kHz
Wide operating voltage range
Very low quiescent current
On/Off control (High active)
2.1V to 14.0V
IQUT=75A at IOUT=0mA
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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4.Table of Contents
1. General Description ....................................................................................................................................1
2. Features.......................................................................................................................................................1
3. Applications ................................................................................................................................................1
4. Table of Contents........................................................................................................................................2
5. Block Diagram ............................................................................................................................................3
6. Ordering Information ..................................................................................................................................4
7. 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=25C.................................................................................................7
■ Electrical Characteristics of Ta=-40C~85C.........................................................................................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
Control
Circuit
Bandgap
Reference
Vcont
GND
Np
Figure 1. Block Diagram
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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
18
VOUT
1.8
XX
30
VOUT
3.0
XX
50
VOUT
5.0
25
2.5
33
3.3
54
5.4
Table 2. Optional Voltage Version, Output Voltage & Voltage Code
XX
13
14
15
16
17
19
20
21
22
VOUT
1.3
1.4
1.5
1.6
1.7
1.9
2.0
2.1
XX
23
24
26
27
28
29
31
32
34
VOUT
2.3
2.4
2.6
2.7
2.8
2.9
3.1
3.2
XX
35
36
37
38
39
40
41
42
43
VOUT
3.5
3.6
3.7
3.8
3.9
4.0
4.1
4.2
XX
44
45
46
47
48
49
55
-
VOUT
4.4
4.5
4.6
4.7
4.8
4.9
5.5
-
2.2
3.4
4.3
-
-
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7.Pin Configurations and Functions
■ Pin Configurations
6
1
4
3
5
(Top View)
2
■ Function
Pin No.
Pin Description
Internal Equivalent Circuit
Description
Vcont
On/Off Control Terminal
VCONT > 1.8V : ON
VCONT < 0.35V : OFF
320k
500k
1
Vcont
The pull-down resister (500k) is built-in.
2, 5
GND
Np
-
GND Terminal
Np
Noise Bypass Terminal
3
Connect a bypass capacitor between GND.
Vout
Vin
4
6
Vout
Vin
Output Terminal
Vref
-
Input Terminal
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Condition
8.Absolute Maximum Ratings
Parameter
Supply Voltage
Symbol
VccMAX
min
-0.4
Max
16
Unit
V
-0.4
-0.4
-0.4
-0.4
-
6
V
V
Vout≦2.0V
Reverse Bias
VrevMAX
12
2.1V≦Vout
Np pin Voltage
VnpMAX
VcontMAX
Tj
5
V
Control pin Voltage
Junction temperature
Storage Temperature Range
Power Dissipation
16
V
150
150
760
C
C
mW
Tstg
-55
-
PD
(Note 1)
Note 1. PD must be decreased at rate of -6.6mW/C for operation above 25C. Thermal resistance JA=
151C/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
Ta
min
-40
2.1
typ
max
85
Unit
C
Condition
Operating Temperature Range
Operating Voltage Range
-
-
VOP
14
V
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10. Electrical Characteristics
■ Electrical Characteristics of Ta=Tj=25C
The parameters with min or max values will be guaranteed at Ta=Tj=25C.
(Vin=VoutTYP+1V,Vcont=1.8V,Ta=Tj=25C)
Parameter
Output Voltage
Symbol
Vout
Condition
Iout = 5mA
min
typ
max
Unit
(Table 3, Table 4)
V
Line Regulation
LinReg Vin = 5V
-
0.0
5.0
mV
mV
mV
mV
mV
mA
mA
A
Iout = 5mA ~ 50mA
Load Regulation
LoaReg
(Table 3, Table 4)
Iout = 5mA ~ 100mA
Iout = 50mA
-
90
160
-
160
Dropout Voltage (Note 2)
Vdrop
Iout
Iout = 100mA
-
280
100
-
Output Current (Note 3)
Peak Output Current (Note 3)
Quiescent Current
-
IoutPEAK When (VoutTYP0.9)
150
200
75
Iout = 0mA
Vcont = 0V
Iout = 50mA
Iq
-
-
-
120
0.1
2.7
Standby Current
Istandby
Ignd
0.0
1.5
A
Ground Pin Current
mA
Control Terminal
Control Current
Vcont = 1.8V
Vout ON state
Vout OFF state
Icont
-
1.8
-
5.0
15.0
-
A
V
-
-
Control Voltage
Vcont
0.35
V
Reference Value
Np Terminal Voltage
Vnp
Vout/Ta
IShort
-
-
-
-
1.26
35
-
-
-
-
V
ppm
/C
mA
V
Output Voltage / Temp.
Short Circuit Current
200
38
Output Noise Voltage
(VoutTYP=3.0V)
Cout=1.0F, Cnp=0.01F
Iout=30mA
Vnoise
Rms
Cout=1.0F, Cnp=0.001F
Iout=10mA, f=1kHz
f=10kHz
-
-
80
70
-
-
Ripple Rejection
(VoutTYP=3.0V)
RR
tr
dB
Cout=1.0F, Cnp=0.001F
Rise Time
(VoutTYP=3.0V)
Vcont: Pulse Wave (100Hz)
Vcont ON Vout95%
point
-
35
-
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
Output Voltage
Load Regulation
Iout = 50mA Iout = 100mA
Part Number
min
typ
max
typ
max
typ
max
V
V
V
mV
5
6
6
7
mV
12
14
15
16
20
21
mV
11
13
15
16
21
22
mV
26
31
35
37
50
52
AP1157ADV18
AP1157ADV25
AP1157ADV30
AP1157ADV33
AP1157ADV50
AP1157ADV54
1.750
2.450
2.950
3.250
4.925
5.319
1.800
2.500
3.000
3.300
5.000
5.400
1.850
2.550
3.050
3.350
5.075
5.481
9
9
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Table 4. Optional Voltage Version
Output Voltage
Load Regulation
Iout = 50mA Iout = 100mA
Part Number
min
typ
max
typ
max
typ
max
V
V
V
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
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
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
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
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
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
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
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■ Electrical Characteristics of Ta=-40C~85C
The parameters with min or max values will be guaranteed at Ta=-40 ~ 85C.
(Vin=VoutTYP+1V,Vcont=1.8V,Ta=-40 ~ 85C)
Parameter
Output Voltage
Symbol
Vout
Condition
Min.
Typ.
Max.
Unit
Iout = 5mA
(Table 5, Table 6)
V
Line Regulation
LinReg Vin = 5V
-
0.0
8.0
mV
mV
mV
mV
mV
mA
mA
A
Iout = 5mA ~ 50mA
Load Regulation
LoaReg
(Table 5, Table 6)
Iout = 5mA ~ 100mA
Iout = 50mA
-
90
160
-
205
Dropout Voltage (Note 4)
Vdrop
Iout
Iout = 100mA
-
360
100
-
Output Current (Note 5)
Peak Output Current (Note 5)
Quiescent Current
-
IoutPEAK When (VoutTYP0.9)
110
200
75
Iout = 0mA
Vcont = 0V
Iout = 50mA
Iq
-
-
-
145
0.5
3.3
Standby Current
Istandby
Ignd
0.0
1.5
A
Ground Pin Current
mA
Control Terminal
Control Current
Vcont = 1.8V
Vout ON state
Vout OFF state
Icont
-
1.8
-
5.0
15.0
-
A
V
-
-
Control Voltage
Vcont
0.35
V
Reference Value
Np Terminal Voltage
Vnp
Vout/Ta
IShort
-
-
-
-
1.26
35
-
-
-
-
V
ppm
/C
mA
V
Output Voltage / Temp.
Short Circuit Current
200
38
Output Noise Voltage
(VoutTYP=3.0V)
Cout=1.0F, Cnp=0.01F
Iout=30mA
Vnoise
Rms
Cout=1.0F, Cnp=0.001F
Iout=10mA, f=1kHz
f=10kHz
-
-
80
70
-
-
Ripple Rejection
(VoutTYP=3.0V)
RR
tr
dB
Cout=1.0F, Cnp=0.001F
Rise Time
(VoutTYP=3.0V)
Vcont: Pulse Wave (100Hz)
Vcont ON → Vout95%
point
-
35
-
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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Table 5. Standard Voltage Version
Output Voltage
Load Regulation
Iout = 50mA Iout = 100mA
Part Number
min
typ
max
typ
max
typ
max
V
V
V
mV
5
6
6
7
mV
18
21
22
23
30
31
mV
11
13
15
16
21
22
mV
42
53
62
66
AP1157ADV18
AP1157ADV25
AP1157ADV30
AP1157ADV33
AP1157ADV50
AP1157ADV54
1.720
2.420
2.920
3.217
4.875
5.265
1.800
2.500
3.000
3.300
5.000
5.400
1.880
2.580
3.080
3.383
5.125
5.535
9
9
94
101
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Table 6. Optional Voltage Version
Output Voltage
Load Regulation
Iout = 50mA Iout = 100mA
Part Number
min
typ
max
typ
max
typ
max
V
V
V
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
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
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
102
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
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
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
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
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11. Description
11.1 Input /Output Capacitors
Line Regulation
Test conditions
Vin
=VoutTYP+1V
Vin
Vout
Np
Iout=5mA
Cin
Cout
Vcont
1.0F
1.0F
Vcont
1.8V
Cnp
0.001F
Iin vs Vin
Quiescent Current
Iout=0mA
Iout=0mA
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
Vout=
1.5,2.0,3.0,4.0,5.0V
0
2
4
6
8
10 12 14 16
Vin (V)
Load Regulation
Peak Output Current
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
Test conditions
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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
Vout
Np
Iout=5mA
Cin
1.0F
Cout
Vcont
1.0F
Vcont
1.8V
Cnp
0.001F
0
50
100
Iout (mA)
Dropout Voltage
2.1V VoutTYP
Standby Current (Off state)
Vcont=0V
0
-20
1.E-06
1.E-07
1.E-08
1.E-09
1.E-10
1.E-11
-40
-60
-80
-100
-120
-140
-160
0
50
100
0
2
4
6
8
10 12 14 16
Iout (mA)
Vin (V)
Control Current
Control Current, ON/OFF Point
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Vout vs Vin Regulation Point
2.1V VoutTYP
Test conditions
Vin
=VoutTYP+1V
Vin
Vout
Np
Iout=5mA
Cin
Cout
Vcont
1.0F
1.0F
Vcont
1.8V
Cnp
0.001F
Vout vs Vin Regulation Point
Vout vs Vin Regulation Point
VoutTYP=1.5V
VoutTYP=2.0V
1.54
2.04
Iout=0,50,100mA
Iout=0,50,100mA
1.52
1.50
1.48
1.46
1.44
1.42
1.40
1.38
1.36
1.34
2.02
2.00
1.98
1.96
1.94
1.92
1.90
1.88
1.86
1.84
1.5
1.6
1.7
1.8
1.9
2.0
1.8
1.9
2.0
2.1
2.2
2.3
Vin (V)
Vin (V)
Reverse Bias Current
Test conditions
Vin=0V, Vcont=0V
Vin=0V
Irev
Vin
Vout
Np
Cin
1.0F
Cout
1.0F
Vrev
Vcont
Vcont
0V
Cnp
0.001F
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11.2 Temperature Characteristics
Vout
Test conditions
VoutTYP=3.0V
Vin
=VoutTYP+1V
20
10
0
Vin
Vout
Np
Iout=5mA
Cin
Cout
Vcont
1.0F
1.0F
-10
Vcont
1.8V
Cnp
0.001F
-20
35.15 ppm/℃
-30
-40
-40 -20
0
20 40 60 80 100
Ta (℃)
Peak Output Current
Vout=VoutTYP 0.9
GND Pin Current
Iout=100mA
Iout=50mA
Iout=30mA
250
200
150
100
50
7.0
6.0
5.0
4.0
3.0
2.0
1.0
0.0
0
-40 -20
0
20 40 60 80 100
Ta(°C)
-40 -20
0
20 40 60 80 100
Ta(℃)
Dropout Voltage
2.1V VoutTYP
Quiescent Current
Iout=0mA
Iout=100mA
300
250
200
150
100
50
Iout=50mA
Iout=30mA
0
-40 -20
0
20 40 60 80 100
Ta(°C)
Test conditions
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Vin
=VoutTYP+1V
Vin
Vout
Np
Iout=5mA
Cin
Cout
Vcont
1.0F
1.0F
Vcont
Cnp
1.8V
0.001F
Load Regulation
VoutTYP=3.0V
Line Regulation
Vin = 5V
0
-10
-20
-30
-40
-50
-60
20
15
10
5
Iout=30mA
Iout=50mA
Iout=100mA
0
-5
-10
-15
-20
-40 -20
0
20 40 60 80 100
-40 -20
0
20 40 60 80 100
Ta(℃)
Ta(℃)
Control Current
ON/OFF Point
2.0
1.8
1.6
1.4
1.2
1.0
0.8
Vout_ON
Vout_OFF
0.6
0.4
0.2
0.0
-40 -20
0
20 40 60 80 100
Ta(℃)
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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.
Test conditions
Cout=0.22F, 0.47F, 1.0F, 2.2F
Cnp=0.00F, 0.01F, 0.1F
R.R vs Iout : Frequency=1kHz
Vripple
200mVp-p
Vin(DC)=VoutTYP+1.5V
Vin
Vout
Np
Iout=10mA
Cout
1.0F
Vcont
f=100Hz 1MHz
Vcont
1.8V
Cnp
0.001F
Iout=10mA, 20mA, 50mA, 100mA
R.R vs Low Vin : Frequency=1kHz
Iout=100mA
Iout=50mA
Iout=20mA
Iout=10mA
Iout=1mA
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
0
20
40
60
80
100
0
0.2
0.4
0.6
0.8
1
Iout (mA)
Vin-Vout(Typ) (V)
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11.4 ON/OFF Transient
Test conditions
Vin
=VoutTYP+1V
Vin
Vout
Np
Vcont
Iout=30mA
Cin
Cout
Vcont
1.0F
1.0F
Rise Time
Vout×95%
Vcont=0V2V
Cnp
(f=100Hz)
0.001F
Vout
Time
Cout=0.47F, 1.0F, 2.2F
Cout=0.47F, 1.0F, 2.2F
Cnp=0.001F, 0.01F, 0.1F
The rise time of the regulator depends on Cout and Cnp.
The fall time depends on Cout.
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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
Vin
Vout
Np
Iout
ONOFF
Cin
1.0F
Cout
1.0F
Vcont
Vcont
1.8V
Cnp
0.001F
Iout=0100mA, 5105mA
Iout=100mA0mA, 105mA5mA
Cout=0.47F, 1.0F, 2.2F : Iout=0mA100mA
Cout=0.47F, 1.0F, 2.2F : Iout=100mA0mA
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11.6 Line Transient
Test conditions
Cnp=0.001F, 0.01F, 0.1F
Vin
=VoutTYP+1V+2V
Vin
Vout
Np
Iout=30mA
Cout
1.0F
Vcont
Vcont
Cnp
1.8V
0.001F
Cout=0.1F, 0.22F, 0.47F
Cout=1.0F, 2.2F
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11.7 Output Noise Characteristics
Increase Cnp to decrease the noise. The recommended Cnp capacitance is 0.01F 0.1F.
The amount of noise increases with the higher output voltages.
Vout vs Noise
Test conditions
Vin
=VoutTYP+1V
80
70
60
50
40
30
20
10
0
Vin
Vout
Np
Iout=30mA
Cin
1.0F
Cout
1.0F
Vcont
Vcont
1.8V
Cnp
0.01F
BPF=400Hz 80kHz
1.0
2.0
3.0
4.0
5.0
Vout(Typ) (V)
Cnp vs Noise
Iout vs Noise
Cout=0.22uF
Cout=0.47uF
Cout=1.0uF
Cout=2.2uF
Cout=0.22uF
Cout=0.47uF
Cout=1.0uF
Cout=2.2uF
70
65
60
55
50
45
40
35
30
25
20
300
250
200
150
100
50
0
0
20
40
60
80
100
1p
10p 100p 1000p 0.01u 0.1u
Cnp (F)
Iout (mA)
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[AP1157ADVXX]
11.8 Stability
Linear regulators require input and output capacitors in order to maintain the regulator's loop stability. If
0.22F or larger capacitor is connected to the output side, the IC provides stable operation at any
voltage(1.3VVoutTYP5.5V). (The capacitor must be larger than 0.22F 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=Cout0.47F Ceramic
Capacitance.
AP1157ADV
Vin
Vout
T
T
Cin0.47F
Cout0.47F
Cnp
0.001F
GND
Figure 2. Recommended value of the application
100
Unstable area
10
1
Stable area
0.1
Unstable area
0.01
0
20 40 60 80 100
Iout (mA)
1.3V VoutTYP 5.5V, Cout=0.1F Cout=0.22F
Figure 3. Output Voltage, Output Current vs. Stable Operation Area
Figure 3 shows stable operation with a ceramic capacitor of 0.22F. 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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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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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 140C with the overheating protection circuit. Pd is the value when the
overheating protection circuit starts operation.
When you assume the ambient temperature to be 25C,
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 25C or higher. Thermal resistance (JA) is
151C/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
AP1157ADVxx (SON0202-6): 500mW or more
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Procedure (When mounted on PCB).
Pd(mW)
Pd
2
1.Find Pd (VinIin when the output is short-circuited).
2. Plot Pd against 25C.
3. Connect Pd to the point corresponding to the 140C
with a straight line.
D Pd
5
3
4. Pull a vertical line from the maximum operating
temperature in your design (e.g., 75C).
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 75C)
4
0
0
25 50
100
140C
75C
Ta(°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
Vcont < 0.35V
ON
OFF
・Parallel Connected ON/OFF Control
Vout
5V
5V
Vin
3.3V
2.0V
3.3V
2.0V
R
On/Off
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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11.11 Noise Bypass
The noise characteristics depend on the capacitance on the Np terminal. A standard value is Cnp=0.001F.
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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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 VoutTYP +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 140C, 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
Vout
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[AP1157ADVXX]
13. Test Circuit
AP1157ADVxx
(SON0202-6)
Iin
A
Vin
GND
GND
Vout
6
5
4
Vin
GND
Vout
Vin
Cin
Cout
1.0F
Iout
Vout
V
1.0F
Vcont
Np
Vcont
1
GND
2
Np
3
Icont
*2pin
connected internally.
and
5pin
are
A
Cnp
0.001F
Vcont
Figure 8. Test Circuit
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[AP1157ADVXX]
14. Package
■ Outline Dimensions
(Unit: mm)
Mark
6
4
xxx
1
3
2.00±0.07
1Pin Mark
Lot No.
0.20±0.05
0.65
1
3
6
4
(0.70)
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[AP1157ADVXX]
15. Revise History
Date
(YY/MM/DD)
15/01/21
Revision
00
Page
-
Contents
First edition
015000843-E-00
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[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.
1. All information included in this document are provided only to illustrate the operation and
application examples of AKM Products. AKM neither makes warranties or representations with
respect to the accuracy or completeness of the information contained in this document nor grants any
license to any intellectual property rights or any other rights of AKM or any third party with respect
to the information in this document. You are fully responsible for use of such information contained
in this document in your product design or applications. AKM ASSUMES NO LIABILITY FOR
ANY LOSSES INCURRED BY YOU OR THIRD PARTIES ARISING FROM THE USE OF
SUCH INFORMATION IN YOUR PRODUCT DESIGN OR APPLICATIONS.
2. The Product is neither intended nor warranted for use in equipment or systems that require
extraordinarily high levels of quality and/or reliability and/or a malfunction or failure of which may
cause loss of human life, bodily injury, serious property damage or serious public impact, including
but not limited to, equipment used in nuclear facilities, equipment used in the aerospace industry,
medical equipment, equipment used for automobiles, trains, ships and other transportation, traffic
signaling equipment, equipment used to control combustions or explosions, safety devices, elevators
and escalators, devices related to electric power, and equipment used in finance-related fields. Do
not use Product for the above use unless specifically agreed by AKM in writing.
3. Though AKM works continually to improve the Product’s quality and reliability, you are
responsible for complying with safety standards and for providing adequate designs and safeguards
for your hardware, software and systems which minimize risk and avoid situations in which a
malfunction or failure of the Product could cause loss of human life, bodily injury or damage to
property, including data loss or corruption.
4. Do not use or otherwise make available the Product or related technology or any information
contained in this document for any military purposes, including without limitation, for the design,
development, use, stockpiling or manufacturing of nuclear, chemical, or biological weapons or
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technology or any information contained in this document, you should comply with the applicable
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5. Please contact AKM sales representative for details as to environmental matters such as the RoHS
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,
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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.
015000843-E-00
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2015/01
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