AKM AP1150ADS34 14v input / 200ma output ldo regulator Datasheet

[AP1150ADSXX]
AP1150ADSXX
14V Input / 200mA Output LDO Regulator
1. Genaral Description
The AP1150ADSxx is a low dropout linear regulator with ON/OFF control, which can supply 200mA 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 9.5V in 0.1V steps.
The output capacitor is available to use a small 0.1uF ceramic capacitor (1.8VVout). The over current, thermal
and reverse bias protections are integrated, and also the package is small and thin type. The IC is designed for
space saving requirements.
2. Feature
 Available to use a small 0.1uF ceramic capacitor (1.8VVOUT)
 Dropout Voltage
VDROP=120mV at 100mA
 High Precision output voltage
1.5% or 50mV
 High ripple rejection ratio
80dB at 1kHz
 Wide operating voltage range
2.1V to 14V
 Very low quiescent current
IQ=63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
SOT23-5
3. Application
 Any Electronic Equipment
 Battery Powered Systems
 Mobile Communication
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[AP1150ADSXX]
4. Table of Contents
1.
2.
3.
4.
5.
6.
7.
Genaral Description ........................................................................................................................................... 1
Feature................................................................................................................................................................ 1
Application......................................................................................................................................................... 1
Table of Contents ............................................................................................................................................... 2
Block Diagram ................................................................................................................................................... 3
Ordering Information ......................................................................................................................................... 4
Pin Configurations and Functions ...................................................................................................................... 5
■ Pin Configurations ............................................................................................................................................ 5
■ Functions .......................................................................................................................................................... 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℃................................................................................................... 9
11.
Description ................................................................................................................................................... 11
11.1 DC Characteristics .................................................................................................................................... 11
11.2 Input / output capacitors ........................................................................................................................... 11
11.3 Bias voltage and temperature characteristics of the ceramic capacitor .................................................... 13
11.4 On/off control ........................................................................................................................................... 13
11.5 Noise Bypass ............................................................................................................................................ 13
11.6 Board Layout ............................................................................................................................................ 14
12.
Definition of term ......................................................................................................................................... 16
13.
Recommended External Circuits .................................................................................................................. 17
■External Circuit ............................................................................................................................................... 17
■Test Circuit ...................................................................................................................................................... 17
14.
Package ........................................................................................................................................................ 18
■ Outline Dimensions ........................................................................................................................................ 18
15.
Revise History .............................................................................................................................................. 19
IMPORTANT NOTICE .......................................................................................................................................... 20
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[AP1150ADSXX]
5. Block Diagram
Figure 1. Block Diagram
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2014/10
[AP1150ADSXX]
6. Ordering Information
AP1150ADSXX
Ta = -40 to 85°C
SOT23-5
・ Output Voltage Code
For product name, please check the below chart. Please contact your authorized ASAHI KASEI
MICRODEVICES representative for voltage availability.
AP1150ADSXX
Output voltage code
Table 1. Standard Voltage Version, Output Voltage & Voltage Code
XX
15
18
30
VOUT
1.5
1.8
3.0
XX
33
40
45
VOUT
3.3
4.0
4.5
XX
50
54
-
VOUT
5.0
5.4
-
Table 2. Optional Voltage Version, Output Voltage & Voltage Code
XX
VOUT
XX
VOUT
XX
VOUT
13
1.3
27
2.7
42
4.2
14
1.4
28
2.8
43
4.3
16
1.6
29
2.9
44
4.4
17
1.7
31
3.1
46
4.6
19
1.9
32
3.2
47
4.7
20
2.0
34
3.4
48
4.8
21
2.1
35
3.5
49
4.9
22
2.2
36
3.6
51
5.1
23
2.3
37
3.7
52
5.2
24
2.4
38
3.8
53
5.3
25
2.5
39
3.9
55
5.5
26
2.6
41
4.1
60
6.0
014011331-E-00
-4-
XX
65
70
75
80
85
90
95
-
VOUT
6.5
7.0
7.5
8.0
8.5
9.0
9.5
-
2014/10
[AP1150ADSXX]
7. Pin Configurations and Functions
VIN
VOUT
■ Pin Configurations
5
4
1
2
3
VCONT
GND
Np
(Top View)
■ Functions
Pin No.
Pin
Description
Internal Equivalent Circuit
Description
Vcont
1
1
On/Off Control Terminal
320k
VCONT
The pull-down resister (500k) is built-in.
500k
2
GND
GND Terminal
Np
3
Noise Bypass Terminal
3
Np
Connect a bypass capacitor between GND.
Vout
Vin
4
4
VOUT
Output Terminal
Vref
5
VIN
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Input Terminal
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2014/10
[AP1150ADSXX]
8. Absolute Maximum Ratings
Parameter
Supply Voltage
Symbol
VccMAX
Reverse Bias
VrevMAX
Np Terminal Voltage
Vcont Terminal Voltage
Junction temperature
Storage Temperature Range
VnpMAX
VcontMAX
Tj
Tstg
min
-0.4
-0.4
-0.4
-0.4
-0.4
-55
max
16
6
12
5
16
150
150
Unit
V
V
V
V
V
℃
C
Condition
Vout≦2.0V
2.1V≦Vout
When mounted on PCB
(Note 1)
Note 1. Please do derating with 4.0mW/C at Pd=500mW and 25C or more. Thermal resistance (JA) =
250C/W.
Power Dissipation
PD
-
500
mW
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
Operating Voltage Range
Ta
VOP
-40
2.1
-
85
14
C
V
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Condition
2014/10
[AP1150ADSXX]
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
Symbol
Vout
(VIN=Vout(typ)+1V,Vcont=1.8V,Ta=Tj=25C)
Condition
min
typ
max
Unit
Iout = 5mA
(Table 3,Table 4)
V
Line Regulation
LinReg
VIN = 5V
Load Regulation
LoaReg
Dropout Voltage (Note 2)
Vdrop
Maximum Output Current
(Note 3)
Short Circuit Current(Note 3)
IoutMAX
Iout = 5mA ~ 100mA
Iout = 5mA ~ 200mA
0.0
5.0
mV
(Table 3,Table 4)
mV
mV
Iout = 50mA
-
80
140
mV
Iout = 100mA
-
120
210
mV
Iout = 180mA
（2.1V≦Vout≦2.3V）
-
230
350
mV
Iout = 200mA
（2.4V≦Vout）
-
200
350
mV
240
320
-
mA
-
360
-
mA
Vout=Vout(typ)0.9
ISHORT
Iq
Iout = 0mA
-
63
100
A
Istandby
Vcont = 0V
-
0.0
0.1
A
Quiescent Current
Standby Current
-
Ground Terminal Current
Vcont Terminal
Vcont Terminal Current
Ignd
Iout = 50mA
-
1.0
1.8
mA
Icont
Vcont = 1.8V
-
5.0
15.0
Vcont Terminal Voltage
Vcont
Vout ON state
1.8
-
-
Vout OFF state
-
-
0.35
A
V
V
Note 2. For Vout  2.0V, no regulations.
Note 3. The maximum output current is limited by power dissipation.
Table 3. Standard Voltage Version
Load Regulation
Output Voltage
Part Number
AP1150ADS15
AP1150ADS18
AP1150ADS30
AP1150ADS33
AP1150ADS40
AP1150ADS45
AP1150ADS50
AP1150ADS54
014011331-E-00
min
typ
max
V
1.450
1.750
2.950
3.250
3.940
4.432
4.925
5.319
V
1.500
1.800
3.000
3.300
4.000
4.500
5.000
5.400
V
1.550
1.850
3.050
3.350
4.060
4.568
5.075
5.481
-7-
Iout = 100mA
typ
max
V
V
10
23
10
24
11
27
12
28
13
30
13
31
14
32
14
33
Iout = 200mA
typ
max
mV
V
21
49
22
51
26
61
27
64
29
69
31
73
33
78
34
81
2014/10
[AP1150ADSXX]
Table 4. Optional Voltage Version
Output Voltage
Part Number
AP1150ADS13
AP1150ADS14
AP1150ADS16
AP1150ADS17
AP1150ADS19
AP1150ADS20
AP1150ADS21
AP1150ADS22
AP1150ADS23
AP1150ADS24
AP1150ADS25
AP1150ADS26
AP1150ADS27
AP1150ADS28
AP1150ADS29
AP1150ADS31
AP1150ADS32
AP1150ADS34
AP1150ADS35
AP1150ADS36
AP1150ADS37
AP1150ADS38
AP1150ADS39
AP1150ADS41
AP1150ADS42
AP1150ADS43
AP1150ADS44
AP1150ADS46
AP1150ADS47
AP1150ADS48
AP1150ADS49
AP1150ADS51
AP1150ADS52
AP1150ADS53
AP1150ADS55
AP1150ADS60
AP1150ADS65
AP1150ADS70
AP1150ADS75
AP1150ADS80
AP1150ADS85
AP1150ADS90
AP1150ADS95
014011331-E-00
min
typ
max
V
1.250
1.350
1.550
1.650
1.850
1.950
2.050
2.150
2.250
2.350
2.450
2.550
2.650
2.750
2.850
3.050
3.150
3.349
3.447
3.546
3.644
3.743
3.841
4.038
4.137
4.235
4.334
4.531
4.629
4.728
4.826
5.023
5.122
5.220
5.319
5.910
6.402
6.895
7.387
7.880
8.372
8.865
9.357
V
1.300
1.400
1.600
1.700
1.900
2.000
2.100
2.200
2.300
2.400
2.500
2.600
2.700
2.800
2.900
3.100
3.200
3.400
3.500
3.600
3.700
3.800
3.900
4.100
4.200
4.300
4.400
4.600
4.700
4.800
4.900
5.100
5.200
5.300
5.400
6.000
6.500
7.000
7.500
8.000
8.500
9.000
9.500
V
1.350
1.450
1.650
1.750
1.950
2.050
2.150
2.250
2.350
2.450
2.550
2.650
2.750
2.850
2.950
3.150
3.250
3.451
3.553
3.654
3.756
3.857
3.959
4.162
4.263
4.365
4.466
4.669
4.771
4.872
4.974
5.177
5.278
5.380
5.481
6.090
6.598
7.105
7.613
8.120
8.628
9.136
9.643
-8-
Load Regulation
Iout = 100mA
Iout = 200mA
typ
max
typ
max
V
V
mV
V
10
22
20
47
10
22
20
48
10
23
21
50
10
23
21
51
10
24
22
52
10
24
22
53
10
24
23
54
11
25
23
55
11
25
23
55
11
25
24
56
11
25
24
57
11
26
24
58
11
26
25
59
11
26
25
60
11
27
25
60
12
27
26
62
12
27
26
63
12
28
27
64
12
28
27
65
12
28
28
66
12
29
28
67
12
29
29
68
12
29
29
69
13
30
30
70
13
30
30
71
13
30
30
72
13
31
31
73
13
31
31
74
13
31
32
75
14
32
32
76
14
32
32
77
14
33
33
78
14
33
33
79
14
33
34
80
14
33
34
81
15
35
36
86
15
36
38
90
16
38
39
94
17
39
41
98
17
40
43
102
18
42
44
106
18
43
46
110
19
45
48
114
2014/10
[AP1150ADSXX]
■ Electrical Characteristics of Ta=-40C~85℃
The parameters with min or max values will be guaranteed at Ta=-40 ~ 85C.
Parameter
Output Voltage
Symbol
Vout
(VIN=Vout(typ)+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
-
Iout = 5mA ~ 100mA
mV
mV
-
80
180
mV
Iout = 100mA
-
120
270
mV
-
230
390
mV
-
200
390
mV
220
320
-
mA
-
360
-
Iout = 180mA
（2.2V≦Vout≦2.3V）
Vout=Vout(typ)  0.9
Iq
Iout = 0mA
-
63
120
Istandby
Vcont = 0V
-
0.0
0.5
Ignd
Iout = 50mA
-
1.0
2.2
mA
μA
μA
mA
Icont
Vcont = 1.8V
-
5.0
15.0
μA
Vout ON state
1.8
-
-
V
Vout OFF state
-
-
0.35
V
ISHORT
Vcont Terminal Voltage
mV
Iout = 50mA
（2.4V≦Vout）
IoutMAX
8.0
(Table 5,Table 6)
Iout = 5mA ~ 200mA
Iout = 200mA
Maximum Output Current (Note
5)
Short Circuit Current (Note 5)
Quiescent Current
Standby Current
Ground Terminal Current
Vcont Terminal
Vcont Terminal Current
0.0
Vcont
Note 4. For Vout  2.1V, no regulations.
Note 5. The maximum output current is limited by power dissipation.
Table 5. Standard Voltage Version
Load Regulation
Output Voltage
Part Number
AP1150ADS15
AP1150ADS18
AP1150ADS30
AP1150ADS33
AP1150ADS40
AP1150ADS45
AP1150ADS50
AP1150ADS54
014011331-E-00
min
typ
max
V
1.420
1.720
2.920
3.217
3.900
4.387
4.875
5.265
V
1.500
1.800
3.000
3.300
4.000
4.500
5.000
5.400
V
1.580
1.880
3.080
3.383
4.100
4.613
5.125
5.535
-9-
Iout = 100mA
typ
max
V
V
10
27
10
28
11
32
12
33
13
36
13
38
14
40
14
41
Iout = 200mA
typ
max
mV
V
21
63
22
63
26
83
27
88
29
100
31
109
33
117
34
124
2014/10
[AP1150ADSXX]
Table 6. Optional Voltage Version
Output Voltage
Part Number
AP1150ADS13
AP1150ADS14
AP1150ADS16
AP1150ADS17
AP1150ADS19
AP1150ADS20
AP1150ADS21
AP1150ADS22
AP1150ADS23
AP1150ADS24
AP1150ADS25
AP1150ADS26
AP1150ADS27
AP1150ADS28
AP1150ADS29
AP1150ADS31
AP1150ADS32
AP1150ADS34
AP1150ADS35
AP1150ADS36
AP1150ADS37
AP1150ADS38
AP1150ADS39
AP1150ADS41
AP1150ADS42
AP1150ADS43
AP1150ADS44
AP1150ADS46
AP1150ADS47
AP1150ADS48
AP1150ADS49
AP1150ADS51
AP1150ADS52
AP1150ADS53
AP1150ADS55
AP1150ADS60
AP1150ADS65
AP1150ADS70
AP1150ADS75
AP1150ADS80
AP1150ADS85
AP1150ADS90
AP1150ADS95
014011331-E-00
min
typ
max
V
1.220
1.320
1.520
1.620
1.820
1.920
2.020
2.120
2.220
2.320
2.420
2.520
2.620
2.720
2.820
3.020
3.120
3.315
3.412
3.510
3.607
3.705
3.802
3.997
4.095
4.192
4.290
4.485
4.582
4.680
4.777
4.972
5.070
5.167
5.265
5.850
6.337
6.825
7.312
7.800
8.287
8.775
9.262
V
1.300
1.400
1.600
1.700
1.900
2.000
2.100
2.200
2.300
2.400
2.500
2.600
2.700
2.800
2.900
3.100
3.200
3.400
3.500
3.600
3.700
3.800
3.900
4.100
4.200
4.300
4.400
4.600
4.700
4.800
4.900
5.100
5.200
5.300
5.400
6.000
6.500
7.000
7.500
8.000
8.500
9.000
9.500
V
1.380
1.480
1.680
1.780
1.980
2.080
2.180
2.280
2.380
2.480
2.580
2.680
2.780
2.880
2.980
3.180
3.280
3.485
3.588
3.690
3.793
3.895
3.998
4.203
4.305
4.408
4.510
4.715
4.818
4.920
5.023
5.228
5.330
5.433
5.535
6.150
6.663
7.175
7.688
8.200
8.713
9.225
9.738
- 10 -
Load Regulation
Iout = 100mA
Iout = 200mA
typ
max
typ
max
V
V
mV
V
10
26
20
60
10
26
20
61
10
27
21
65
10
28
21
61
10
28
22
65
10
29
22
66
10
29
23
68
11
29
23
70
11
30
23
72
11
30
24
73
11
30
24
75
11
31
24
77
11
31
25
78
11
32
25
80
11
32
25
82
12
33
26
85
12
33
26
87
12
34
27
90
12
34
27
92
12
34
28
93
12
35
28
95
12
35
29
97
12
36
29
99
13
36
30
102
13
37
30
104
13
37
30
105
13
37
31
107
13
38
31
110
13
38
32
112
14
39
32
114
14
39
32
115
14
40
33
119
14
40
33
120
14
41
34
122
14
41
34
124
15
43
36
134
15
45
38
142
16
47
39
151
17
49
41
159
17
50
43
168
18
52
44
176
18
54
46
185
19
56
48
193
2014/10
[AP1150ADSXX]
11. Description
11.1 DC Characteristics
VOUT(mV)
15
10
5
±0
-5
-10
-15
-20
-25
-30
-35
 Load Regulation
VOUT=1.5V
2.0V
3.0V
4.0V
5.0V
0
5
10
VIN(V)
15
20
VOUT(mV)
 Stability Point
IOUT=0 to 200mA
10
5
±0
-5
-10
-15
-20
-25
-30
-35
-40
VOUT=2.0V
VOUT=3.0V
VOUT=5.0V
0
50
100
IOUT(mA)
150
200
 Dropout Voltage versus Output Current
20
IOUT=0mA
±0
-20
-40
-60
-80
-100
IOUT=200mA
-120
-140
-160
IOUT in 50mA steps
-180
-200
-100
0
100
200
300
VIN(mV)
VDROP(mV)
VOUT(mV)
 Line Regulation
±0
-20
-40
-60
-80
-100
-120
-140
-160
-180
-200
0
100
IOUT(mA)
200
11.2 Input / output capacitors
Linear regulators require input and output capacitors in order to maintain the regulator's loop stability. The
equivalent series resistance (ESR) of the output capacitor must be in the stable operation area. However, it is
recommended to use as large a value of capacitance as is practical. The output noise and the ripple noise
decrease as the capacitance value increases. ESR values vary widely between ceramic and tantalum capacitors.
However, tantalum capacitors are assumed to provide more ESR damping resistance, which provides greater
circuit stability. This implies that a higher level of circuit stability can be obtained by using tantalum capacitors
when compared to ceramic capacitors with similar values.
For output voltage device 2.0V applications, the recommended value of CL0.10F.
For output voltage device 1.5V applications, the recommended value of CL0.22F
014011331-E-00
- 11 -
2014/10
[AP1150ADSXX]
The input capacitor is necessary when the battery is discharged, the power supply impedance increases, or
the line distance to the power supply is long. This capacitor might be necessary on each individual IC even if
two or more regulator ICs are used. It is not possible to determine this indiscriminately. Please confirm the
stability while mounted. The IC provides stable operation with an output side capacitor of
0.1F (Vout2.0V). If it is 0.1F or more over the full range of temperature, either a ceramic capacitor or
tantalum capacitor can be used without considering ESR.
CIN=0.22 to
0.1F
CL=0.22 to
0.1F
CNP=0.01F
Figure 2. Recommended components values
VOUT=1.5 to 1.9V
100
VOUT=3.0V
Stable area
CL=0.1F
Stable area
CL=0.068F
Stable area
CL=0.068F
Stable area
CL=0.068F
ESR()
10
ESR()
10
100
ESR()
10
VOUT=5.0V
100
ESR()
10
VOUT=4.0V
100
ESR()
10
VOUT=2.0V
100
1
1
1
1
1
0.1
0.1
0.1
0.1
0.1
0.01
0
50
100
IOUT(mA)
150
0.01
0
50
100
IOUT(mA)
150
0.01
0
50
100
IOUT(mA)
150
0.01
0
50
100
IOUT(mA)
150
0.01
0
Stable area
CL=0.068F
50
100
IOUT(mA)
All stable: CL0.22F All stable: CL0.1F
Figure 3. Stable operation area vs. voltage, current, and ESR
Note 6. Please increase the output capacitor value when the load current is 0.5 mA or less. The stability of the
regulator improves if a big output side capacitor is used (the stable operation area extends.)
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11.3
Bias voltage and temperature characteristics of the ceramic capacitor
Generally, a ceramic capacitor has both a temperature characteristic and a voltage characteristic. Please
consider both characteristics when selecting the part. The B curves are the recommend characteristics.
 Capacitance versus Voltage
 Capacitance versus Ambinet Temperature
100
100
90
B Curve
Capacitance(%)
Capacitance(%)
90
80
70
F Curve
60
50
40
B Curve
80
70
F Curve
60
50
0
2
4
6
8
Bias Voltage(V)
10
40
-50
12
-25
0
25
50
75
Ambinet Temperature(°C)
100
11.4 On/off control
It is recommended to turn the regulator off when the circuit following the regulator is non-operating. A design
with little electric power loss can be implemented. We recommend the use of the on/off control of the
regulator without using a high side switch to provide an output from the regulator. A highly accurate output
voltage with low voltage drop is obtained. Because the Vcont terminal current is small, it is possible to control
it directly by CMOS logic.
Vsat
REG
On/Off Cont.
Figure 4. Equivalent circuit of output
11.5 Noise Bypass
The noise and the ripple rejection characteristics depend on the capacitance on the Np terminal. The ripple
rejection characteristic of the low frequency region improves by increasing the capacitance of Cnp. A standard
value is Cnp=0.001F. Increase Cnp in a design with important output noise and ripple rejection requirements.
The IC will not be damaged if 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.
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11.6 Board Layout
Vout
VIN
on/off
Np
Figure 5. Layout（PCB Material: Glass epoxy (t=0.8mm)）
Pd(mW)
500
0
-4.0mW/C
0
25
50
100
(85C)
150C
Figure 6. Derating curve
Please do derating with 4.0mW/C at Pd=500mW and 25C or more. Thermal resistance (ja) is=250C/W.
The package loss is limited at the temperature that the internal temperature sensor works (about 150C).
Therefore, the package loss is assumed to be an internal limitation. There is no heat radiation characteristic of
the package unit assumed because of the small size. The device being mounted on the PCB carries heat away.
This value changes by the material and the copper pattern etc. of the PCB. The losses are approximately
500mW. Enduring these losses becomes possible in a lot of applications operating at 25C.
The overheating protection circuit operates when there are a lot of losses with the regulator (When outside
temperature is high or heat radiation is bad). The output current cannot be pulled enough and the output
voltage will drop when the protection circuit operates. When the junction temperature reaches 150C, the IC is
shut down. However, operation begins at once when the IC stops operation and the temperature of the chip
decreases.
・How to determine the thermal resistance when mounted on PCB
The thermal resistance when mounted is expressed as follows:
Tj=jaPd+Ta
Tj of IC is set around 150C. Pd is the value when the thermal sensor is activated.
If the ambient temperature is 25C, then:
150=jaPd+25
ja=125/Pd (C /mW)
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・The simple method to calculate Pd
Mount the IC on the print circuit board. Short between the output terminal and ground. after that, raise input
voltage from 0V to evaluated voltage gradually. At shorted the output terminal, the power dissipation PD can
be expressed as Pd=VIN Iin. The input current decreases gradually as the temperature of the chip becomes
high. After a while, it reaches the thermal equilibrium. Use this currrent value at the thermal equilibrium. In
almost all the cases, it shows 500mW or more. In the case that the power, VIN  Short Circuit Current, becomes
more than twice of the maximum rating of its power dissipation in a moment, there is a possibility that the IC
is destroyed before internal thermal protection works.
Pd(mW)
2
Pd
D Pd
5
4
0
25
50
75
Ta (℃)
Procedure (When mounted on PCB.)
1. Find Pd (VINIin when the output side is
short-circuited).
2. Plot Pd against 25C.
3. Connect Pd to the point corresponding to the 150C
with a straight line.
4.
In
design, take a vertical line from the maximum
3
operating temperature (e.g., 75C) to the derating curve.
5. Read off the value of Pd against the point at which the
vertical line intersects the derating curve. This is taken
100
150
as the maximum power dissipation DPd.
6. DPd  (VINmaxVout)=Iout (at 75C)
Figure 7. 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.
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12. Definition of term
・Output Voltage (Vout)
The output voltage is specified with VIN=Vout(typ)+1V , and Iout=5mA.
・Maximum Output Current (IoutMAX)
The rated output current is specified under the condition where the output voltage drops 0.3V the value specified
with Iout=5mA. The input voltage is set to Vout(typ)+1V and the current is pulsed to minimize temperature effect.
・Dropout Voltage (Vdrop)
The dropout voltage is the difference between the input voltage and the output voltage at which point the regulator
starts to fall out of regulation. Below this value, the output voltage will fall as the input voltage is reduced. It is
dependent upon the load current and the junction temperature.
・Line Regulation (LinReg)
Line regulation is the ability of the regulator to maintain a constant output voltage as the input voltage changes. The
line regulation is specified as the input voltage is changed from VIN=Vout(typ)+1V to VIN= Vout(typ)+6V. It is a
pulse measurement to minimize temperature effect.
・Load Regulation (LoaReg)
Load regulation is the ability of the regulator to maintain a constant output voltage as the load current changes. It is
a pulsed measurement to minimize temperature effects with the input voltage set to VIN=Vout(typ)+1V. The load
regulation is specified output current step conditions of
5mA to 100mA.
・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 specified with 200mVrms, 1kHz super-imposed on the input voltage, where VIN=Vout+1.5V. Ripple
rejection is the ratio of the ripple content of the output vs. input and is expressed in dB.
・Standby Current (Istandby)
Standby current is the current, which flows into the regulator when the output is turned off by the control function
(Vcont=0V).
・Over Current Sensor
The over current sensor protects the device when there is excessive output current. It also protects the device if the
output is accidentally connected to ground.
・Thermal Sensor
The thermal sensor protects the device in case the junction temperature exceeds the safe value (TJ=150C). This
temperature rise can be caused by external heat, excessive power dissipation caused by large input to output voltage
drops, or excessive output current. The regulator will shut off when the temperature exceeds the safe value. As the
junction temperatures decrease, the regulator will begin to operate again. Under sustained fault conditions, the
regulator output will oscillate as the device turns off then resets. Damage may occur to the device under extreme
fault.
Please reduce the loss of the regulator when this protection operate, by reducing the input voltage or make better heat
efficiency.In the case that the power, VIN  Ishort(Short Circuit Current), becomes more than twice of the maximum
rating of its power dissipation in a moment, there is a possibility that the IC is destroyed before internal thermal
protection works.
・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
VIN
Vout
GND
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13. Recommended External Circuits
■External Circuit
To load
5
4
Vin
VIN
Cin
0.22F
Vin
V
IN
Vout
Vcont
GND
Np
1
2
3
CL
F
Cnp
0.01F
Vcont
Figure 8. External Circuit
■Test Circuit
5
4
Iin
A
VVin
IN
Vin
VIN
+
Vout
Cin
CL
1.0F
Vcont
GND
Np
1
2
3
Icont
A
+
Iout
Vout
V
1.0F
Cnp
Vcont
0.001F
Figure 9. Test Circuit
Note 7. Electrical Characteristics are applied for the test circuit above.
(Cin=1.0F(Tantalum) ,CL=1.0F(Tantalum) , Cnp=0.001F(Ceramic))In the application , both of
ceramic capacitor and tantalum capacitor are available to use as Cin , CL and Cnp at Iout  0.5mA.
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14. Package
■ Outline Dimensions
・Unit: mm
Mark
Lot No.
5
4
1
1.6 0.1
+0.2
R33
xxx
3
0.4 +
 0.1
0.95
0.95
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+0.10
0.125 0.05
0 ~0.15
1.1 +
 0.1
 0.2
2.9 +
+0.2
2.8 0.3
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0.4 +
 0.2
2014/10
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15. Revise History
Date
(YY/MM/DD)
14/10/29
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Revision
Page
Contents
00
-
First Edition
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information contained in th
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