TK70650HC [AKM]
Fixed Positive LDO Regulator, 5V, PDSO6, 2 X 1.70 MM, LEAD FREE, SON-6;
| 型号： | TK70650HC |
| 厂家： | 
ASAHI KASEI MICROSYSTEMS |
| 描述： | Fixed Positive LDO Regulator, 5V, PDSO6, 2 X 1.70 MM, LEAD FREE, SON-6 光电二极管 |
| 文件： | 总23页 (文件大小：763K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
[TK705xxS/TK707xxS,TK706xxH/TK708xxH]
TK705xxS/TK706xxH
LDO Regulator IC
1-. DESCRIPTION
4-. PIN CONFIGURATION
TK705xxS and TK706xxH is a low dropout linear
regulator with ON/OFF control, which can supply 100mA
load current.
Top View
· SOT23-5
TK705xxS
The IC is an integrated circuit with a silicon monolithic
bipolar structure.
Vcont
GND
Np
1
2
3
5
4
Vin
The output voltage, trimmed with high accuracy, is
available from 1.5 to 5.0V in 0.1V steps.
The packages are the small and thin SON2017-6, and
the extremely versatile SOT23-5. The IC is designed for
portable applications with space requirements, battery
powered system and any electronic equipment.
Two kinds of pin configuration can be selected for each
package.
Vout
The over current, over heat sensor and reverse bias over
current protection circuits are built-in.
ESD is also high, so it won’t break easily. It is possible
to use at ease.
· SON2017-6
TK706xxH
Vcont
1
2
3
6
5
4
Vin
2-. FEATURES
Output current: 100mA, Peak 200mA
Active high on/off control
Excellent Ripple rejection ratio: 80dB (f=1kHz)
70dB (f=10kHz)
GND
Np
GND
Vout
*2pin,5pin are connected in the IC.
Output capacitance: Cout 0.47F(Ceramic)
Output voltage accuracy: 1.5% or 50mV
Short circuit protection (Over current protection)
Internal thermal shutdown (Over heat protection)
Reverse bias protection
3-. APPLICATIONS
Any Electronic Equipment
Battery Powered Systems
Mobile Communication
AP-MS0027-E-00
- 1 -
2011/02
[TK705xxS/TK707xxS,TK706xxH/TK708xxH]
5-. PACKAGE OUTLINE
SOT23-5
SON2017-6
Mark
0.7
0.3
Mark
+0.2
2.0
4
0.1
5
Lead Free Mark
6
4
0.65
1 Pin Mark
1
3
Lot No.
3
1
0.95
0.95
Reference Mount Pad
+0.10
0.05
0.4+00..1050
0.65
0.20
M
0.10
0.2
2.1
0.95
0.95
Reference Mount Pad
(0.2)
(0.2)
M
0.1
±0.2
2.9
1
3
±0.2
2.8
0.1
6
4
6-. BLOCK DIAGRAM
Vin
Vout
Over Heat &
Over Current
Protection
Control
Circuit
Bandgap
Reference
Vcont
GND
Np
AP-MS0027-E-00
- 2 -
2011/02
[TK705xxS/TK707xxS,TK706xxH/TK708xxH]
7-. ABSOLUTE MAXIMUM RATINGS
Ta=25C
Parameter
Absolute Maximum Ratings
Supply Voltage
Symbol
Rating
Units
Conditions
VccMAX
-0.4 ~ 16
-0.4 ~ 6
-0.4 ~ 12
-0.4 ~ 5
-0.4 ~ 16
-55 ~ 150
460 *1
V
V
Vout 2.0V
Reverse Bias
VrevMAX
V
2.1V Vout
Np pin Voltage
VnpMAX
VcontMAX
Tstg
V
Control pin Voltage
Storage Temperature Range
V
C
mW
mW
SOT23-5
Power Dissipation
PD
400 *2
SON2017-6
Operating Condition
Operating Temperature Range
Operating Voltage Range
Short Circuit Current
TOP
VOP
-40 ~ 85
2.1 ~ 14
200
C
V
Ishort
mA
Over Current Protection
*1 : Internal Limited Tj=140°C. PD must be decreased at rate of 4.0 mW/C for operation above 25C.
*2 : Internal Limited Tj=140°C. PD must be decreased at rate of 3.5 mW/C for operation above 25C.
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.
8-. ELECTRICAL CHARACTERISTICS
The parameters with min. or max. values will be guaranteed at Ta=Tj=25C with test when manufacturing or
SQC(Statistical Quality Control) methods. The operation between -40 ~ 85C is guaranteed when design.
AP-MS0027-E-00
- 3 -
2011/02
[TK705xxS/TK707xxS,TK706xxH/TK708xxH]
Vin=VoutTYP+1V,Vcont=1.8V,Ta=Tj=25C
Value
TYP
Parameter
Output Voltage
Symbol
Units
Conditions
MIN
MAX
Vout
V
Iout = 5mA
Vin = 5V
Refer to TABLE 1
Line Regulation
Load Regulation
LinReg
LoaReg
0.0
5.0
mV
mV Iout = 5mA ~ 50mA
mV Iout = 5mA ~ 100mA
mV Iout = 50mA
mV Iout = 100mA
mA
Refer to TABLE 1
Refer to TABLE 1
Dropout Voltage *1
Vdrop
90
160
160
280
100
Output Current *2
Peak Output Current *2
Quiescent Current
Standby Current
Iout
IoutPEAK
Iq
150
1.8
200
75
mA
A
A
When (VoutTYP0.9)
Iout = 0mA
120
0.1
2.7
Istandby
Ignd
0.0
1.5
Vcont = 0V
Ground Pin Current
Control Terminal *3
Control Current
mA Iout = 50mA
Icont
5.0
15.0
0.35
Vcont = 1.8V
Vout ON state
Vout OFF state
A
V
Control Voltage
Vcont
V
Reference Value
Np Terminal Voltage
Vnp
1.26
35
V
ppm
/C
Output Voltage / Temp.
Vout/Ta
Output Noise Voltage
(VoutTYP=3.0V)
Cout=1.0F, Cnp=0.01F
Iout=30mA
Vrms
Vnoise
R.R
38
Ripple Rejection
(VoutTYP=3.0V)
Cout=1.0F, Cnp=0.001F
Iout=10mA, f=1kHz
80
70
dB
dB f=10kHz
Cout=1.0F, Cnp=0.001F
Vcont: Pulse Wave (100Hz)
Vcont ON Vout95% point
Rise Time
tr
35
s
(VoutTYP=3.0V)
*1: For Vout 2.0V , no regulations.
*2: The output current is limited by power dissipation.
*3: The input current decreases to pA level when control terminal is connected to GND (Off state).
General Note: Parameter with only typical value is for reference only.
AP-MS0027-E-00
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2011/02
[TK705xxS/TK707xxS,TK706xxH/TK708xxH]
TABLE 1. Output Voltage, Load Regulation
Load Regulation
Output Voltage
Iout = 50mA
Iout = 100mA
Part Number
MIN
TYP
V
MAX
TYP
mV
MAX
mV
TYP
mV
MAX
mV
V
V
VoutTYP=1.3V ~ 2.0V
TK70513SC
TK70514SC
TK70515SC
TK70516SC
TK70517SC
TK70518SC
TK70519SC
TK70520SC
VoutTYP=2.1V ~ 3.0V
TK70521SC
TK70522SC
TK70523SC
TK70524SC
TK70525SC
TK70526SC
TK70527SC
TK70528SC
TK70529SC
TK70530SC
VoutTYP=3.1V ~ 4.0V
TK70531SC
TK70532SC
TK70533SC
TK70534SC
TK70535SC
TK70536SC
TK70537SC
TK70538SC
TK70539SC
TK70540SC
TK70613HC
TK70614HC
TK70615HC
TK70616HC
TK70617HC
TK70618HC
TK70619HC
TK70620HC
1.250
1.350
1.450
1.550
1.650
1.750
1.850
1.950
1.300
1.400
1.500
1.600
1.700
1.800
1.900
2.000
1.350
1.450
1.550
1.650
1.750
1.850
1.950
2.050
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
10.0
10.0
11.0
11.0
11.0
12.0
12.0
12.0
10.0
10.0
10.0
11.0
11.0
11.0
11.0
12.0
22.0
23.0
24.0
25.0
25.0
26.0
27.0
28.0
TK70621HC
TK70622HC
TK70623HC
TK70624HC
TK70625HC
TK70626HC
TK70627HC
TK70628HC
TK70629HC
TK70630HC
2.050
2.150
2.250
2.350
2.450
2.550
2.650
2.750
2.850
2.950
2.100
2.200
2.300
2.400
2.500
2.600
2.700
2.800
2.900
3.000
2.150
2.250
2.350
2.450
2.550
2.650
2.750
2.850
2.950
3.050
5.0
6.0
6.0
6.0
6.0
6.0
6.0
6.0
6.0
6.0
12.0
13.0
13.0
13.0
14.0
14.0
14.0
14.0
15.0
15.0
12.0
12.0
13.0
13.0
13.0
14.0
14.0
14.0
15.0
15.0
28.0
29.0
30.0
31.0
31.0
32.0
33.0
34.0
34.0
35.0
TK70631HC
TK70632HC
TK70633HC
TK70634HC
TK70635HC
TK70636HC
TK70637HC
TK70638HC
TK70639HC
TK70640HC
3.050
3.150
3.250
3.349
3.447
3.546
3.644
3.743
3.841
3.940
3.100
3.200
3.300
3.400
3.500
3.600
3.700
3.800
3.900
4.000
3.150
3.250
3.350
3.451
3.553
3.654
3.756
3.857
3.959
4.060
7.0
7.0
7.0
7.0
7.0
7.0
7.0
7.0
8.0
8.0
15.0
15.0
16.0
16.0
16.0
17.0
17.0
17.0
17.0
18.0
15.0
16.0
16.0
16.0
16.0
17.0
17.0
17.0
18.0
18.0
36.0
37.0
37.0
38.0
39.0
40.0
40.0
41.0
42.0
43.0
AP-MS0027-E-00
- 5 -
2011/02
[TK705xxS/TK707xxS,TK706xxH/TK708xxH]
TABLE 1. Output Voltage, Load Regulation (continue)
Load Regulation
Output Voltage
Iout = 50mA
Iout = 100mA
Part Number
MIN
TYP
V
MAX
TYP
mV
MAX
mV
TYP
mV
MAX
mV
V
V
VoutTYP=4.1V ~ 5.0V
TK70541SC
TK70542SC
TK70543SC
TK70544SC
TK70545SC
TK70546SC
TK70547SC
TK70548SC
TK70549SC
TK70550SC
TK70641HC
TK70642HC
TK70643HC
TK70644HC
TK70645HC
TK70646HC
TK70647HC
TK70648HC
TK70649HC
TK70650HC
4.038
4.137
4.235
4.334
4.432
4.531
4.629
4.728
4.826
4.925
4.100
4.200
4.300
4.400
4.500
4.600
4.700
4.800
4.900
5.000
4.162
4.263
4.365
4.466
4.568
4.669
4.771
4.872
4.974
5.075
8.0
8.0
8.0
8.0
8.0
8.0
8.0
9.0
9.0
9.0
18.0
18.0
18.0
19.0
19.0
19.0
20.0
20.0
20.0
20.0
18.0
19.0
19.0
19.0
20.0
20.0
20.0
21.0
21.0
21.0
43.0
44.0
45.0
46.0
46.0
47.0
48.0
49.0
49.0
50.0
AP-MS0027-E-00
- 6 -
2011/02
[TK705xxS/TK707xxS,TK706xxH/TK708xxH]
TK705xxS (SOT23-5)
9-. TEST CIRCUIT
9-1-. TK705xxS/TK706xxH
5
4
Vin
Vout
Iin
A
Vin
GND
GND
Vout
Np
Vcont
1
GND
2
Np
3
Vin
Cin
Cout
Iout
Vout
V
TK706xxH (SON2017-6)
1.0F
Vcont
1.0F
6
5
4
Vin
GND
Vout
Icont
A
Cnp
Vcont
0.001F
Vcont
1
GND
2
Np
3
*2pin and 5pin are connected in
the IC.
AP-MS0027-E-00
- 7 -
2011/02
[TK705xxS/TK707xxS,TK706xxH/TK708xxH]
10-. TYPICAL CHARACTERISTICS
10-1--1. DC CHARACTERISTICS
Line Regulation
Test conditions
Vin
=VoutTYP+1V
Vin
Vout
Np
Iout=5mA
Cin
Cout
1.0F
Vcont
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)
AP-MS0027-E-00
- 8 -
2011/02
[TK705xxS/TK707xxS,TK706xxH/TK708xxH]
Test conditions
GND Pin Current
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
0
Vin
Vout
Np
Iout=5mA
Cin
1.0F
Cout
1.0F
Vcont
Vcont
1.8V
Cnp
0.001F
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
AP-MS0027-E-00
- 9 -
2011/02
[TK705xxS/TK707xxS,TK706xxH/TK708xxH]
Vout vs Vin Regulation Point
2.1V VoutTYP
Test conditions
Vin
=VoutTYP+1V
Vin
Vout
Np
Iout=5mA
Cout
Cin
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
AP-MS0027-E-00
- 10 -
2011/02
[TK705xxS/TK707xxS,TK706xxH/TK708xxH]
11-1-2. Temperature Characteristics
Vout
Test conditions
VoutTYP=3.0V
Vin
=VoutTYP+1V
20
10
0
Vin
Vout
Np
Iout=5mA
Cout
Cin
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)
AP-MS0027-E-00
- 11 -
2011/02
[TK705xxS/TK707xxS,TK706xxH/TK708xxH]
Test conditions
Vin
=VoutTYP+1V
Vin
Vout
Np
Iout=5mA
Cin
Cout
1.0F
Vcont
1.0F
Vcont
Cnp
1.8V
0.001F
Load Regulation
VoutTYP=3.0V
Line Regulation
Vin = 5V
0
-10
-20
-30
-40
-50
20
15
10
5
Iout=30mA
Iout=50mA
Iout=100mA
0
-5
-10
-15
-20
-60
-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（℃）
AP-MS0027-E-00
- 12 -
2011/02
[TK705xxS/TK707xxS,TK706xxH/TK708xxH]
10-2-. AC CHARACTERISTICS (VoutTYP=3.0V)
Ripple Rejection
Cout=0.22F, 0.47F, 1.0F, 2.2F
Test conditions
Vripple
200mVp-p
Vin(DC)=VoutTYP+1.5V
Cout=0.22F
0.47F
Vin
Vout
Iout=10mA
Cout
1.0F
1.0F
2.2F
Vcont
Np
f=100Hz 1MHz
Vcont
1.8V
Cnp
0.001F
Iout=10mA, 20mA, 50mA, 100mA
Cnp=0.00F, 0.01F, 0.1F
Iout=100mA
50mA
20mA
10mA
Cnp=0.001F
Cnp=0.01F
0.1F
R.R vs Iout : Frequency=1kHz
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)
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.
AP-MS0027-E-00
- 13 -
2011/02
[TK705xxS/TK707xxS,TK706xxH/TK708xxH]
ON/OFF Transient
Test conditions
Vin
=VoutTYP+1V
Vin
Vout
Np
Vcont
Iout=30mA
Cin
Cout
1.0F
Vcont
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.
AP-MS0027-E-00
- 14 -
2011/02
[TK705xxS/TK707xxS,TK706xxH/TK708xxH]
LOAD Transient
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
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.
AP-MS0027-E-00
- 15 -
2011/02
[TK705xxS/TK707xxS,TK706xxH/TK708xxH]
LINE Transient
Cnp=0.001F, 0.01F, 0.1F
Test conditions
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
AP-MS0027-E-00
- 16 -
2011/02
[TK705xxS/TK707xxS,TK706xxH/TK708xxH]
Output Noise Characteristics
Vout vs Noise
Test conditions
Vin
=VoutTYP+1V
80
70
60
50
40
30
20
10
0
Vin
Vout
Np
Iout=30mA
Cout
Cin
1.0F
Vcont
1.0F
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)
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.
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[TK705xxS/TK707xxS,TK706xxH/TK708xxH]
11-. PIN DESCRIPTION
Pin
Pin No.
Internal Equivalent Circuit
Description
Description
Vcont
TK705xxS : 1
TK706xxH : 1
Vcont
On/Off Control Terminal
VCONT > 1.8V : ON
VCONT < 0.35V : OFF
320k
500k
The pull-down resister (500k) is built-in.
TK705xxS : 2
TK706xxH : 2,5 GND
GND Terminal
Np
TK705xxS : 3
TK706xxH : 3
Np
Noise Bypass Terminal
Connect a bypass capacitor between GND.
Vout
TK705xxS : 4
TK706xxH : 4
Vout
Output Terminal
Vin
Vref
TK705xxS : 5
TK706xxH : 6
Vin
Input Terminal
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[TK705xxS/TK707xxS,TK706xxH/TK708xxH]
12-. APPLICATIONS INFORMATION
12-1-. Definition of Technical Terms
Relating Protection Circuit
Relating Characteristic
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.
Note Each characteristics will be measured in a short
period not to be influenced by joint temperature (Tj).
Output voltage (Vout)
The output voltage is specified with Vin= VoutTYP+1V
and Iout=5mA
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.
Output current (Iout)
The output is turned off when the chip reaches around
140C, but it turns on again when the temperature of the
chip decreases.
Output current, which can be used continuously (It is the
range where overheating protection of the IC does not
operate.)
Reverse Voltage Protection
Peak maximum output current (IoutPEAK
)
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 an
Schottky Diode etc. outside.
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.
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.
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.
Vin
Vout
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.
ESD
It is tested by connecting charged capacitor to GND pin
and Vin pin.
Standby current (Istandby)
It is an input current, which flows to the control terminal,
when the IC is turned off.
MM 200pF 0 200Vmin
HBM 100pF 1.5k 2000Vmin
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[TK705xxS/TK707xxS,TK706xxH/TK708xxH]
12-2-. ESR Stability
Fig.13-2 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.
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
(1.3VVoutTYP5.0V). (The capacitor must be larger then
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.
For evaluation
Kyocera:
CM05B104K10AB, CM05B224K10AB,
CM105B104K16A, CM105B224K16A,
CM21B225K10A
Murata:
GRM36B104K10, GRM42B104K10,
GRM39B104K25, GRM39B224K10,
GRM39B105K6.3
A recommended value of the application is as follows.
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.
Cin=Cout0.47F Ceramic Capacitance
Fig.13-1
Vin
Vout
TK705xxS
TK706xxH
Cin0.47F
Cout0.47F
Fig.13-3
Cnp
0.001F
ex. Ceramic Capacitance vs. Voltage, Temperature
GND
Fig.13-2
Output Voltage, Output Current vs.Stable Operation Area
Cout=0.1F
Cout=0.22F
100
10
Unstable area
1
Stable area
0.1
0.01
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.
Unstable area
0
20 40 60 80 100
Iout (mA)
1.5V VoutTYP 5.0V
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[TK705xxS/TK707xxS,TK706xxH/TK708xxH]
12-3-. Operating Region and Power Dissipation
Method of obtaining Pd easily
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.
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.
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.
Pd(mW) Vin (V) Iin (mA)
When the device is mounted, mostly achieve
TK705xxS (SOT23-5): 580mW or more
TK706xxH (SON2017-6): 500mW or more
The thermal resistance when mounted on PCB
*In case that the power, Vin Ishort(Short Circuit Current),
becomes more than the maximum rating of its power dissipation,
the IC may damaged before internal thermal protection works.
The chip joint temperature during operation is shown by
Tj=ja×Pd+Ta. Joint part temperature (Tj) of TK705xxS
/TK706xxH is limited around 140C with the overheating
protection circuit. Pd is the value when the overheating
protection circuit starts operation.
Pd(mW)
2
Pd
When you assume the ambient temperature to be 25C,
140= ja Pd(W)+25
ja Pd=115
D Pd
5
3
ja=115/Pd (C /W)
4
Example of mounting substrate
0
0
25 50
100
140C
75C
Ta(°C)
Procedure (When mounted on PCB).
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.
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).
PCB Material: Two layer glass epoxy substrate
(x=30mm,y=30mm,t=1.0mm,Copper pattern thickness
35um)
6.DPd(Vinmax-Vout)=Iout (at 75C)
TK705xxS (SOT23-5)
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.
Please do the derating with 5.9mW/C at Pd=677mW and
25C or higher. Thermal resistance ( ja) is 170C/W.
TK706xxH (SON2017-6)
Please do the derating with 4.9mW/C at Pd=560mW and
25C or higher. Thermal resistance ( ja) is 205C/W.
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[TK705xxS/TK707xxS,TK706xxH/TK708xxH]
12-4-. ON/OFF Control
12-6-. The notes of the evaluation when
output terminal is short-circuit to GND
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.
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.
Control Terminal Voltage (Vcont) ON/OFF State
Vcont > 1.8V
Vcont < 0.35V
ON
OFF
Parallel Connected ON/OFF Control
Fig.13-4
Vout
Generally, when using tantalum or large electrolysis
capacitor, the influence of resonance phenomenon can be
reduced due to the large ESR (2ohms or more).
5V
TK70550S
TK70533S
TK70520S
Vin
3.3V
2.0V
R
On/Off Cont.
Fig.13-4 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 (TK70520S) 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.
12-5-. 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.
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[TK705xxS/TK707xxS,TK706xxH/TK708xxH]
IMPORTANT NOTICE
These products and their specifications are subject to change without notice.
When you consider any use or application of these products, please make inquiries the sales office of
Asahi Kasei Microdevices Corporation (AKM) or authorized distributors as to current status of the
products.
Descriptions of external circuits, application circuits, software and other related information contained
in this document are provided only to illustrate the operation and application examples of the
semiconductor products. You are fully responsible for the incorporation of these external circuits,
application circuits, software and other related information in the design of your equipments. AKM
assumes no responsibility for any losses incurred by you or third parties arising from the use of these
information herein. AKM assumes no liability for infringement of any patent, intellectual property, or
other rights in the application or use of such information contained herein.
Any export of these products, or devices or systems containing them, may require an export license or
other official approval under the law and regulations of the country of export pertaining to customs
and tariffs, currency exchange, or strategic materials.
AKM products are neither intended nor authorized for use as critical componentsNote1) in any safety,
life support, or other hazard related device or systemNote2), and AKM assumes no responsibility for
such use, except for the use approved with the express written consent by Representative Director of
AKM. As used here:
Note1) A critical component is one whose failure to function or perform may reasonably be expected to
result, whether directly or indirectly, in the loss of the safety or effectiveness of the device or system
containing it, and which must therefore meet very high standards of performance and reliability.
Note2) A hazard related device or system is one designed or intended for life support or maintenance of
safety or for applications in medicine, aerospace, nuclear energy, or other fields, in which its failure to
function or perform may reasonably be expected to result in loss of life or in significant injury or damage to
person or property.
It is the responsibility of the buyer or distributor of AKM products, who distributes, disposes of, or
otherwise places the product with a third party, to notify such third party in advance of the above
content and conditions, and the buyer or distributor agrees to assume any and all responsibility and
liability for and hold AKM harmless from any and all claims arising from the use of said product in
the absence of such notification.
AP-MS0027-E-00
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2011/02
相关型号：
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