[AP1158ADS]
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1. General Description
AP1158ADS is active noise filter IC, which can extremely reduce the ripple noise on the power supply line.
The ripple filter can be composed of few external components with low input-output voltage drop (Vdrop).
Vdrop can be set by external resistance. It is packaged in SOT23-5 and suitable for small set.
2. Feature
Low Vdrop ripple filter can be composed of few parts.
Built-in PNP power transistor
Output Current 150mA
Ripple Rejection 66dB at 1kHz
Input Voltage Range 1.8V～14.0V
Quiescent Current 65μA at Iout=0mA
Internal on/off function (High active)
Built-in Short-circuit Protection and Thermal Shutdown Protection
Built-in Bias Over-current Blocking Circuit
Available to use as low Vdrop / low noise regulator.
Small Package SOT23-5
3. Applications
Audio Equipment (Car stereo)
Image equipment (car navigation system)
Active Noise Filter IC
AP1158ADS
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4. Table of Contents
1. General Description ....................................................................................................................................1
2. Feature .........................................................................................................................................................1
3. Applications ................................................................................................................................................1
4. Table of Contents ........................................................................................................................................2
5. Block Diagram ............................................................................................................................................3
6. Ordering Guide ...........................................................................................................................................3
7. Pin Configurations and Functions ...............................................................................................................4
■ Pin Configuration ........................................................................................................................................4
■ Functions .....................................................................................................................................................4
8. Absolute Maximum Rating .........................................................................................................................5
9. Recommended Operating Conditions .........................................................................................................5
10. Electrical Characteristics ............................................................................................................................6
■ Electrical Characteristics of Ta=Tj=25C ..................................................................................................6
■ Electrical Characteristics of Ta=-40C ~85C ............................................................................................7
11. Description ..................................................................................................................................................8
11.1 DC Characteristics ...........................................................................................................................8
11.2 DC Temperature Characteristics ....................................................................................................10
11.3 Ripple Rejection .............................................................................................................................12
11.4 Output Noise ..................................................................................................................................13
11.5 Transient Response ........................................................................................................................14
11.6 Output Capacitors...........................................................................................................................15
11.7 The ability of a built-in power transistor and setting of Vdrop .....................................................16
11.8 Application of low ripple and low noise multi output ...................................................................17
11.9 Ripple noise reduction of DC-DC converter output ......................................................................18
11.10 Reduce the motor noise ..................................................................................................................18
11.11 Voltage-Power Conversion ............................................................................................................19
11.12 On/Off Control Switching Speed ...................................................................................................19
12. Definition of Term ....................................................................................................................................20
13. Test Circuit ................................................................................................................................................21
14. Package .....................................................................................................................................................22
■ Outline Dimensions ...................................................................................................................................22
15. Revise History ...........................................................................................................................................23
IMPORTANT NOTICE ................................................................................................................................24
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5. Block Diagram
Constant
Current
Source
Vout
GND
Cont
FIL
Vin
6. Ordering Guide
AP1158ADS -40 to 85°C SOT23-5
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7. Pin Configurations and Functions
■ Pin Configuration
■ Functions
Pin
No.
Pin
Description
Internal Equivalent Circuit
Description
1
Vin
-
Input Terminal
Connect a 1μF or more of capacity
between the GND terminal.
2
GND
-
GND Terminal
3
FIL
3
Vin Vout
FIL
Filter Terminal
Output voltage setting resistance (Rfil) is
connected between Vin.
Capacitor of the filter (Cfil) is connected
between GND.
4
Cont
4
Vcont 300k
400k
On/Off Control Terminal
VCONT > 1.8V: ON
VCONT < 0.4V: OFF
The pull-down resister (400k) is built-in.
5
Vout
5Vin Vout
FIL
Output Terminal
Connect a 1μF or more of capacity
between the GND terminal.
1
4
5
VIn
GND
FIL
2
3
(Top view）
COnt
VOUT
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8. Absolute Maximum Rating
Parameter
Symbol
min
max
Unit
Condition
Supply Voltage
Vin
-0.4
16
V
Reverse bias voltage
Vrev
-0.4
8
V
Vout-Vin
Range of Fil terminal set voltage
VNP
-0.4
16
V
Control terminal voltage
VCont
-0.4
16
V
Junction temperature
Tj
-
150
C
Storage Temperature Range
TSTG
-55
150
C
Power Dissipation
PD
-
500
mW
When mounted on board
(Note 1)
Note 1. -4.0mW/C (at 25C or more), θJA=250C /W
WARNING: The maximum ratings are the absolute limitation values with the possibility of the IC breakage.
When the operation exceeds this standard quality cannot be guaranteed.
9. Recommended Operating Conditions
Parameter
Symbol
min
typ
max
Unit
Condition
Operating Temperature Range
Ta
-40
-
85
C
Operating Voltage Range
VOP
2.1
-
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=2.5V, Vcont=2V, Rfil=390kΩ, Cin=1μF, Cfil=4.7μF, Cout=1μF, unless otherwise specified.)
Parameter
Symbol
Condition
min
typ
max
Unit
Quiescent Current
Iin
Iout = 0mA
-
65
100
μA
Standby Current
Istandby
Vin = 8V, Vcont = 0V
-
0.1
100
nA
Output Current
Iout
-
-
150
mA
Maximum Output Current
(Note 2) (Note 5)
IoutMAX
Vout = Vouttyp0.9
-
360
-
mA
Load Regulation
LoaReg
Iout = 1 ~ 100mA
-
6
20
mV
Reverse Bias Current
Irev
Vin= 0V,Vcont= 0V,Vout= 8V
-
0.1
100
nA
FIL terminal Sink current
Isink
FIL terminal voltage = Vin - 0.3V
0.5
0.6
0.72
μA
Error Amp
Input Offset Voltage
Verror
Iout = 30mA
20
40
60
mV
Control Terminal
Control Terminal Current
Icont
Vcont = 2.0V
-
4.5
8.0
μA
Control Terminal Voltage
Vcont
Vout ON state
1.8
-
-
V
Vout OFF state
-
-
0.4
V
Ripple Rejection
(Note 3)
R.R.
Iout = 30mA
Ripple
Noise=200mVp-p(@1kHz)
55
66
-
dB
Output Noise
(Note 4) (Note 5)
-
at 1kHz
-
60
-
nV/
√Hz
Note 2. The maximum output current is limited by power dissipation.
Note 3. Ripple rejection is dependent on the characteristics of the input and output voltage difference and the
capacitor, which is set by the resistance. Consider the variation of the variation and the capacitance value of
the resistance value. Value of Rfil and Cfil, please change according to the conditions required by the set. The
above value is an example of the measurement.
Note 4. This is the output noise without ripple noise. The IC itself generates the noise because it is
semiconductor integrated circuit.
Note 5. Items of typical value only show reference values.
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■Electrical Characteristics of Ta=-40C ~85C
The parameters with min or max values will be guaranteed at Ta=Tj=-40 ~ 85C.
(Vin=2.5V, Vcont=2V, Rfil=390kΩ, Cin=1μF, Cfil=4.7μF, Cout=1μF, unless otherwise specified.)
Parameter
Symbol
Condition
min
typ
max
Unit
Quiescent Current
Iin
Iout = 0mA
-
65
120
μA
Standby Current
Istandby
Vin = 8V, Vcont = 0V
-
0.1
500
nA
Output Current
Iout
-
360
-
mA
Maximum Output Current
(Note 6) (Note 9)
IoutMAX
Vout = Vouttyp0.9
-
-
150
mA
Load Regulation
LoaReg
Iout = 1 ~ 100mA
-
6
55
mV
Reverse Bias Current
Irev
Vin = 0V, Vcont=0V, Vout=8V
-
0.1
2000
nA
FIL terminal Sink current
Isink
FIL terminal voltage = Vin - 0.3V
0.4
0.6
0.84
μA
Error Amp
Input Offset Voltage
Verror
Iout = 30mA
-30
40
110
mV
Control Terminal
Control Terminal Current
Icont
Vcont = 2.0V
-
4.5
10.0
μA
Control Terminal Voltage
Vcont
Vout ON state
1.8
-
-
V
Vout OFF state
-
-
0.4
V
Ripple Rejection
(Note 7)
R.R.
Vin = 2.5V, Rfil = 390kΩ
Iout = 30mA, Cfil = 4.7μF
Ripple Noise=200mVp-p(@1kHz)
40
66
-
dB
Output Noise
(Note 8)(Note 9)
-
at 1kHz (Reference value)
-
60
-
nV/
√Hz
Note 6. The maximum output current is limited by power dissipation.
Note 7. Ripple rejection is dependent on the characteristics of the input and output voltage difference and the
capacitor, which is set by the resistance. Consider the variation of the variation and the capacitance value of
the resistance value. Value of Rfil and Cfil, please change according to the conditions required by the set. The
above value is an example of the measurement.
Note 8. This is the output noise without ripple noise. The IC itself generates the noise because it is
semiconductor integrated circuit.
Note 9. Items of typical value only show reference values.
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11. Description
11.1 DC Characteristics
Measurement conditions (Otherwise specified) :
Vin=2.5V, Vcont=2V, Rfil=390kΩ, Cin=1μF, Cfil=4.7μF, Cout=1μF, Iout=5mA
■ Filter Terminal Sink Current
■ Error Amp. off-set Voltage
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
0 2 4 6 8 10 12 14 16 18 20
0
10
20
30
40
50
60
70
80
90
100
0 2 4 6 8 10 12 14 16 18 20
■ Vdrop
■ Quiescent Current (Iout=0mA)
200
220
240
260
280
300
320
340
360
380
400
0 2 4 6 8 10 12 14 16 18 20
0
10
20
30
40
50
60
70
80
90
100
0 2 4 6 8 10 12 14 16 18 20
■ Load Regulation
■ GND Pin Current
-70
-60
-50
-40
-30
-20
-10
0
10
20
30
0 50 100 150 200 250 300
Iout(mA)
Vdrop(mV)
0
2
4
6
8
10
12
14
16
0 50 100 150 200 250 300
Vdrop(mV)
Vin [ V ]
Voffset [ mV ]
Vin [ V ]
Isink [ μA ]
Vin [ V ]
Vdrop [ mV ]
Vin [ V ]
Iin [ μA ]
Iout [ mA ]
∆Vdrop [ mV ]
Iout [ mA ]
Ignd [ m ]
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■ Vout ON-Point
■ Cont Current vs Cont Voltage
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
0.0 0.5 1.0 1.5 2.0
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
Vout(V)
0
5
10
15
20
25
30
35
40
45
50
55
60
0 2 4 6 8 10 12 14 16 18 20
0.0
1.0
2.0
3.0
4.0
5.0
6.0
■ Standby Current
■ Reverse bias Current
1.E-11
1.E-10
1.E-09
1.E-08
1.E-07
1.E-06
1.E-05
1.E-04
0 2 4 6 8 10 12 14 16 18 20
1.E-11
1.E-10
1.E-09
1.E-08
1.E-07
1.E-06
1.E-05
1.E-04
0 2 4 6 8 10 12 14 16 18 20
■ Maximum Output Current
■ Maximum Output Current (Vin)
0.0
0.5
1.0
1.5
2.0
2.5
3.0
0100 200 300 400 500
Iout[mA]
Vout [V]
0
50
100
150
200
250
300
350
400
450
500
0 5 10 15 20
Vin[V]
IoutMAX[mA]
Vcont [ V ]
Vout [ V ]
Vcont [ V ]
Icont [ A ]
Vin [ V ]
Istandby [ A ]
Vrev [ V ]
Irev [ A ]
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11.2 DC Temperature Characteristics
Measurement conditions (Otherwise specified) :
Vin=2.5V, Vcont=2V, Rfil=390kΩ, Cin=1μF, Cfil=4.7μF, Cout=1μF, Iout=5mA
■ Filter Terminal Sink Current
■ Error Amp. off-set Voltage
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
-40 -20 0 20 40 60 80 100
Ta(ｰC)
0
5
10
15
20
25
30
35
40
45
50
-40 -20 0 20 40 60 80 100
Ta(ｰC)
■ Vdrop
■ Quiescent Current (Iout=0mA)
250
255
260
265
270
275
280
285
290
295
300
-40 -20 0 20 40 60 80 100
Ta(ｰC)
0
10
20
30
40
50
60
70
80
90
100
-40 -20 0 20 40 60 80 100
Ta(ｰC)
■ Load Regulation
■ GND Pin Current
-50
-45
-40
-35
-30
-25
-20
-15
-10
-5
0
-40 -20 0 20 40 60 80 100
Ta(ｰC)
Iout = 200 , 100 , 50 , 30 mA
0
1
2
3
4
5
6
7
8
9
10
-40 -20 0 20 40 60 80 100
Ta(ｰC)
Iout = 150 , 100 , 50 , 30 mA
Ta [ C ]
Isink [ A ]
Ta [ C ]
Voffset [ mV ]
Ta [ C ]
Vdrop [ mV ]
Ta [ C ]
Icc [ A ]
Ta [ C ]
∆Vdrop [ mV ]
Ta [ C ]
Ignd [ m ]
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■ Vout ON-Point
■ Cont Current vs Cont Voltage
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
-40 -20 0 20 40 60 80 100
Ta(ｰC)
0
5
10
15
20
25
30
-40 -20 0 20 40 60 80 100
Ta(ｰC)
Vcont = 2 , 4 , 6 V
■ Maximum Output Current
0
50
100
150
200
250
300
350
400
450
500
-40 -20 0 20 40 60 80 100
Ta(ｰC)
Ta [ C ]
Vout [ V ]
Ta [ C ]
Icont [ A ]
Ta [ C ]
IoutMax [ mA ]
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11.3 Ripple Rejection
Measurement condition (Otherwise specified)
Vin=2.5V, Vcont=2V, Ripple Noise=200mVp-p, Rfil=390kΩ, Cin=1μF, Cfil=4.7μF, Cout=1μF,
Iout=30mA
■ RR vs Ripple Noise ( Freq = 1kHz )
■ RR vs Iout ( Freq = 1kHz )
-80
-70
-60
-50
-40
-30
-20
-10
0
0 200 400 600 800 1000
R.R.(dB)
-80
-70
-60
-50
-40
-30
-20
-10
0
0 50 100 150 200
R.R.(dB)
■ RR vs Vin
-80
-70
-60
-50
-40
-30
-20
-10
0
0 2 4 6 8 10 12 14 16
RR [ dB ]
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
10
1k
10k
100
100k
1M
Frequency [ Hz ]
Iout [ mA ]
RR [ dB ]
Ripple Noise Level [ mVp-p ]
RR [ dB ]
Vin [ V ]
RR [ dB ]
Cfil=0.1, 1.0, 4.7μF
Vin
FIL
Vout
Cont
GND
~
30mA
1μF
2V
xx μF
390kΩ
200mVp-p
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11.4 Output Noise
Measurement condition (Otherwise specified)
Vin=2.5V, Vcont=2V, Rfil=390kΩ, Cin=1μF, Cfil=4.7μF, Cout=1μF, Iout=30mA
■ Output Noise vs Iout
■ Output Noise vs Vin
0
10
20
30
40
50
0 50 100 150 200
0
10
20
30
40
50
0 2 4 6 8 10 12 14 16
■ Output Noise Density
0.01
0.1
1
100 1k 10k 100k
Vin [ V ]
Noise [ uVrms ]
Iout [ mA ]
Noise [ uVrms ]
Frequency [ Hz ]
Noise [ uV/√Hz ]
Cfil=0.1μF
Cfil=1.0μF
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11.5 Transient Response
Measurement condition (Otherwise specified)
Vin=2.5V, Vcont=2V, Rfil=390kΩ, Cin=1μF, Cfil=4.7μF, Cout=1μF, Iout=30mA
On/Off control transient response
Input transient response
Load transient response
Cout=1.0μF 2.2μF4.7μF
V
c
o
n
t
V
o
u
t
0V
2V
1V
10μsec
V
i
n
V
o
u
t
0V
2.5V
1V
1sec
Cfil=1.0μF 2.2μF4.7μF
I
o
u
t
V
o
u
t
0 or 1 mA
30mA
100μse
c
0 30 mA 500mV/div
1 30 mA 100mV/div
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11.6 Output Capacitors
AP1158ADS requires input and output capacitors in order to maintain the loop stability. AP1158ADS may
oscillate if there is no input/output capacitor. Please select the output capacitor whose equivalent series
resistance (ESR) is in the stable operation area. Please refer to the following graph and select the capacitor of
the best characteristics. Either ceramic or tantalum capacitor can be used for output terminal. If the capacitor
of 0.22μF or more and the equivalent series resistance is 6Ω or less is connected to the output pin, the IC
provides stable operation. The capacitance and the equivalent series resistance have tolerance that depends on
the product and the manufacturer. Generally, a ceramic capacitor has both temperature characteristic and
voltage characteristic. Please consider both characteristics when selecting the part. A recommended value of
the application is 1.0uF or more.
0.01
0.1
1
10
100
0 50 100 150 200
0.01
0.1
1
10
100
0 50 100 150 200
Figure 1. Unstable area
ESR [ Ω ]
Iout [ mA ]
ESR [ Ω ]
Iout [ mA ]
Unstable Area
Cout = 0.22μF
Cout = 1.0μF
Unstable Area
Stable area
Stable area
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11.7 The ability of a built-in power transistor and setting of Vdrop
Figure 2 shows the ability of a built-in power transistor. When Vdrop of AP1158ADS is set to 300mV, it can
supply an output current of 250mA at the maximum. But this is a current value when the input voltage does not
have the ripple noise. When the input voltage has the ripple noise, it cannot supply the output current value
more. When the input voltage has the ripple noise shown in Figure 3, it can supply an output current of only
150mA at the maximum.
0
50
100
150
200
250
300
350
400
450
500
0 50 100 150 200 250 300
0
50
100
150
200
250
300
350
400
450
500
0 50 100 150 200 250 300
Figure 2. (Left) The ability of a built-in power transistor
(Right) When the input voltage has the ripple noise
If using output current is small, Vdrop can be reduced by lowering the value of Rfil. Figure 3 (Left) shows
relations of Rfil and Vdrop. When Vdrop is reduced, load regulation deteriorates as shown in Figure 3(Right).
0
50
100
150
200
250
300
350
400
450
500
0 200k 400k 600k 800k
-80
-70
-60
-50
-40
-30
-20
-10
0
10
20
0 50 100 150 200 250 300
Figure 3. (Left)Vdrop vs Rfil(Iout=5mA)
(Righ) Load Regulation (Rfil)
Iout [ mA ]
Vsat [ mV ]
Iout [ mA ]
Vsat [ mV ]
Ripple Noise
Rfil [ Ω ]
Vdrop [ mV ]
Iout [ mA ]
∆Vdrop [ mV ]
100kΩ
200kΩ
300kΩ
390kΩ
510kΩ
(Rfil)
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11.8 Application of low ripple and low noise multi output
Vin GND Vout
NpGNDVcont
6 5 4
321
Output 1
Output 2
Input
AP1152ADS
AP1158ADS
1F
4.7F
Cont
VoutVin
FIL
GND
Output 3
AP1158ADS
1F
390k
Cfil
Rfil
4.7F
390k
Cfil
Rfil
Cont
VoutVin
FIL
GND
Figure 4. Low Ripple and Low Noise System Output
Figure 5. Input Voltage : 3.55V + Ripple Noise
Figure 6. Input Voltage : 3.35V + Ripple Noise
Input
Output 1
Output 2
Output 3
0.2V/div 25μs/div
5mV/div 25μs/div
5mV/div 25μs/div
5mV/div 25μs/div
Input
Output 1
Output 2
Output 3
0.2V/div 25μs/div
5mV/div 25μs/div
5mV/div 25μs/div
5mV/div 25μs/div
3.0V
Input-∆V*
Output1-∆V*
There are Output 1 and an approximately
equal ripple rejection effect. The DC level
changes by the voltage of the input.
The ripple rejection effect does not
depend on a DC level of the input.
Output 3 is the output of low ripple and
low noise more than Output 1.
The ripple rejection effect varies with a
DC level of the input.
*∆V = Rfil 0.6μA + Voffset ( Typ:40mV)
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11.9 Ripple noise reduction of DC-DC converter output
Ripple noise of the DC-DC converter is removed by connecting AP1158ADS at the output of the DC-DC
converter.
Output2
Output 1
R2
R1
10F
4.7FDC-DC
converter SBD
L
AP1158ADS
Cont
VoutVin
FIL
GND
4.7F
390k
Cfil
Rfil
Figure 7. Ripple noise removal of DC-DC converter output
Figure 8. Output ripple noise
11.10 Reduce the motor noise
When high voltage from the battery without motor noise is necessary, refer to Figure 9.
Vin
Cfil
AP1158A
DS
MRfil
Figure 9. Reduce the motor noise
Output 1
Output 2
50mV/div 250ns/div
50mV/div 250ns/div
Low ripple voltage
The output voltage will drop ΔV
from the battery voltage.
ΔV is determined by Rfil.
Voltage with large ripple
AP1158ADS
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11.11 Voltage-Power Conversion
Vin
C
AP1158A
DS
Figure 10. Voltage-Power conversion
11.12 On/Off Control Switching Speed
Vout rises at high-speed when Cont pin is controlled with the input voltage is added to Vin pin. It takes long
time to charge Cfil when Vin is controlled directly. Please reduce the time constant of the filter to make the
rise time early. Therefore, it is necessary to reduce the Cfil. Cfil=4.7μF is a standard but can be changed.
Please choose the best Cfil according to the ripple noise level and the frequency. Moreover, the rise time
becomes earlier by connecting diode parallel with Rfil. “Vf×1/2 of the diode” is a standard of the Vdrop.
[Charge time]
Only at Rfil=390kΩ, Cfil=4.7μF
t=5 Cfil Rfil = 5 390 103 470 10-6 = 9.25 sec
AP1158A
DS
AP1158A
DS
Figure 11. SW switching circuit
Figure 12. On / off speed when it is changing the output side capacitor
DA converter
DC voltage
output
Vout
The voltage will be same as the DA
converter power output.
Cout=1.0μF 2.2μF4.7μF
V
c
o
n
t
V
o
u
t
0V
2V
1V
10μsec
Vcont
Vout
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12. Definition of Term
・Sink Current of FIL Terminal
The sink current of the FIL terminal is 0.6A(typ). The Vdrop is calculated as follows.
Vdrop = {(Sink Current) (Rfil)} + (Offset voltage)
Ripple rejection ratio largely depends on this value.
Standard value: Rfil = 390kΩ (Vdrop =270mV) , Vdrop (mV) = Rfil (k) × 0.6A + 40mV
·Input-output voltage drop (Vdrop)
Vdrop is set by Rfil. It is necessary to set Vdrop large when there is a margin between the input voltage and
output voltage, or the ripple noise is large. Please fix the Vdrop according to ripple noise, maximum output
current and operating voltage.
· On / Off Control
Control terminal is active “H”. By connecting the terminal to GND, input current becomes almost zero.
(Operation stops) If the load current is 0 (the load impedance is very high), the Cout electric charge remains.
Therefore, if the ripple filter IC is switched at the same time with the load, quick response application will be
available. In case not using on/off control, please connect this terminal to Vin. The control current decreases
when resistance is connected in series. Series resistance around 300kΩ and pull-down resistor are built in this
terminal. Therefore, when series resistance is connected, the control current will decrease though the control
voltage may swerves to high side. There is no hysteresis in this terminal. Please apply “H” or “L” surely
otherwise noise level will increase.
·Ripple Rejection Ratio (R.R.)
Ripple rejection is the ability of the IC to attenuate the ripple content of the input voltage at the output. It is
specified with the input voltage with AC voltage (condition: 1) overlapped with DC voltage (condition: 2)
Condition1: 200mVp-p, f=1kHz, Condition2: Vin=2.5V
The measurement condition is as follows.
Cin=0.1F, Cout=1F, Cfil=4.7F, Rfil=390kΩ(Vdrop=270mV),Vin: DC=2.5V, AC=200mVp-p (at f=1kHz)
It is necessary to enlarge Rfil and Cfil to improve the ripple rejection ratio at the low frequency range. The
ripple rejection depends on the set Vdrop and the characteristics of the capacitor. Please consider the tolerance
of resistor and capacitor. Please adjust the value of Rfil(=390kΩ) and Cfil(=4.7μF) depends on application.
· On / Off speed
Vout rises at high-speed when Cont pin is controlled with the input voltage is added to Vin pin. Operation will
be very slow when the power supply is started by other control functions. When the time constant of the filter
is small, Vout stands up quickly. By connecting diode in parallel with Rfil, Vout also stands up quickly.
·Maximum Output Current (Iout MAX)
The rated output current is specified under the condition when the output voltage drops 10% the value
specified with Iout=5mA. The input voltage is set at VoutTYP+1V and the current is pulsed to minimize
temperature effect.
·Reverse Bias Current (Irev)
The current flows from the Vout pin to the IC when Vin=0V, Vcont=0V and Vout=8V.
·Quiescent Current (Ignd)
The current flows to GND terminal. It is the difference between the input current and the output current.
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13. Test Circuit
1
3
2
5
4
Vout
ContFIL
GND
Vin
A
A
A
V
Vin
Iin Rfil
390k
Isink
CfilCin Icont
Vcont
Cout Iout Vout
1F 4.7F
1F
Figure 13.Test Circuit
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14. Package
■Outline Dimensions
(Unit: mm)
2.9
1.6
1.1
0.125
0.4
2.8
0 ~0.15 0.1
0.2
5 4
1 3
+0.10
0.05
0.4 0.2
+
+
+
0.95 0.95
R33
Mark
Lot No.
xxx
0.1
+
+0.2
0.1
+0.2
0.3
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15. Revise History
Date
(YY/MM/DD)
Revision
Page
Contents
15/05/26
00
-
First Edition
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