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PQ30RV21 데이터시트 PDF




Sharp에서 제조한 전자 부품 PQ30RV21은 전자 산업 및 응용 분야에서
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부품번호 PQ30RV21 기능
기능 Variable Output Low Power-Loss Voltage Regulators
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PQ30RV21 데이터시트, 핀배열, 회로
Low Power-Loss Voltage Regulators
PQ30RV1/PQ30RV11/PQ30RV2/PQ30RV21
PQ30RV1/PQ30RV11/PQ30RV2/PQ30RV21
Variable Output Low Power-Loss Voltage Regulators
s Features
¡Compact resin full-mold package
¡Low power-loss (Dropout voltage : MAX.0.5V)
¡Variable output voltage (setting range : 1.5 to 30V)
¡Built-in output ON/OFF control function
s Applications
¡Power supply for print concentration control of electronic
typewriters with display
¡Series power supply for motor drives
¡Series power supply for VCRs and TVs
s Outline Dimensions
10.2MAX
PQ30RV31 φ3.2±0.1
4-1.4
+0.3
-0
4-0.6
+0.2
-0.1
3-(2.54)
(Unit : mm)
4.5±0.2
2.8±0.2
(1.5)
(0.5)
s Model Line-ups
Output voltage
Reference voltage
precision : ±4%
1A output
PQ30RV1
Reference voltage
precision : ±2%
PQ30RV11
2A output
PQ30RV2
PQ30RV21
s Equivalent Circuit Diagram
1
2
1q 2q 3q 4q
Internal connection diagram
12
Specific IC
3
4
1 DC input (VIN)
2 DC output (VO)
3 GND
4 Output voltage
minute
adjustment
terminal (VADJ)
Reference
voltage
generation
circuit
*ASO
protection
circuit
-4
+
Overheat
protection
circuit
3
*ASO:Area of Safety
Operation
· Please refer to the chapter“ Handling Precautions ”.
“ In the absence of confirmation by device specification sheets,SHARP takes no responsibility for any defects that may occur in equipment using any SHARP devices
shown in catalogs,data books,etc.Contact SHARP in order to obtain the latest version of the device specification sheets before using any SHARP's device. ”




PQ30RV21 pdf, 반도체, 판매, 대치품
Low Power-Loss Voltage Regulators
Fig.9 Output Voltage vs. Input Voltage
(PQ30RV1/PQ30RV11)
15
R1=390,R2=2.7k,Tj=25˚C
10
RL=
5
RL=10
0
0 5 10 15 20
Input voltage VIN (V)
Fig.11 Dropout Voltage vs. Junction
Temperature (PQ30RV1/PQ30RV11)
0.5
R1=390,R2=2.7k
VIN:input voltage shall be the
0.4 value when output voltage is
95% in comparison with the initial value
Io=1A
0.3
0.2 0.75A
0.5A
0.1 0.25A
0
-20 0 25 50 75 100 125
Junction temperature Tj (˚C)
Fig.13 Quiescent Current vs. Junction
Temperature
5
VIN=35V
IO=0
4
3
2
1
0
-20 0
25 50 75 100 125
Junction temperature Tj (˚C)
PQ30RV1/PQ30RV11/PQ30RV2/PQ30RV21
Fig.10 Output Voltage vs. Input Voltage
(PQ30RV2/PQ30RV21)
15
R1=390,R2=2.7k,Tj=25˚C
10
RL=
5
RL=5
0
0 5 10 15 20
Input voltage VIN (V)
Fig.12 Dropout Voltage vs. Junction
Temperature (PQ30RV2/PQ30RV21)
0.5
R1=390,R2=2.7k
VIN:input voltage shall be the
0.4
value when output voltage is
95% in comparison with the initial value
IO=2A
0.3
1.5A
0.2
1A
0.1 0.5A
0
-20 0 25 50 75 100 125
Junction temperature Tj (˚C)
Fig.14 Ripple Rejection vs. Input Ripple
Frequency (PQ30RV1/PQ30RV11)
80
70 Cref=3.3µF
60
50
No Cref
40
30
20 Tj=25˚C
10
R1=390,R2=2.7k
IO=0.5A,ei=0.5Vrms,
0 VIN=15V
0.1 1 10 100
Input ripple frequency f (kHz)

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PQ30RV21 전자부품, 판매, 대치품
Low Power-Loss Voltage Regulators
s ON/OFF Operation
D1
VIN 1q 2q
VO
R2 D2
CIN
4q
3q
VADJ R1
R3
+
CO
RL
PQ30RV1/PQ30RV11/PQ30RV2/PQ30RV21
VADJ
D2
R2
R1
RL
VO
RD
High : Output OFF
VC
Low : Output ON
Equivalent Circuit
in OFF-state
¡ON/OFF operation is available by mounting externally D2 and R3.
¡When VADJ is forcibly raised above Vref (1.25V TYP) by applying the external signal, the output is turned off (pass transistor of
regulator is turned off). When the output is OFF, VADJ must be higher then Vref MAX., and at the same time must be lower than
maximum rating 7V.
In OFF-state, the load current flows to RL from VADJ through R2. Therefore the value of R2 must be as high as possible.
¡VO'=VADJ X RL/(RL+R2)
occurs at the load. OFF-state equivalent circuit R1 up to 10is allowed. Select as high value of RL and R2 as possible in this range.
In some case, as output voltage is getting lower (VO<1V) , impedance of load resistance rises. In such condition, it is sometime
impossible to obtain the minimum value of VO'. So add the dummy resistance indicated by RD in the figure to the circuit parallel to
the load.
s An Example of ON/OFF Circuit Using the 1-chip Microcomputer Output Port (PQ30RV1)
<Specification>
Output port of microcomputer
VOH (max) =0.5 V
VOH (min) =2.4 V (IOH=0.2mA)
MAX. rating of IOH=0.5mA
Output should be set as follows.
15.6V RL=52(IO=0.3A)
From VO=1.25V (1+R2/R1) we get VO=15.6V.
R2/R1=11.48
Assuming that VF(max)=0.8V for D2 in case of VOH(min)=2.4V, we get VADJ=VOH(min)-VF(max)=2.4V-0.8V=1.6V. From
Vref(max)=1.3V we get R3=0
If R1=10k , we get R2=11.48 X R1=114.8k and IOH as follows, ingnoring RL (52 ) :
IOH=1.6V X (R1+R2) /R1 X R2
=1.6V X (10k +114.8k ) /10k X 114.8k =0.17mA
Hence, IOH<0.2mA. Therefore VOH(min)is ensured.
Next, assuming that VF(min) =0.5V for D2 in case of VOH(max), we get:
IOH=(5V-0.5V) (R1+R2) /R1 X R2=0.49mA which is less than the rating.
Figure 1 shows the VO-VC characteristics when R1=10k , R2=115k , R3=0 , VIN=17V, RL=52 , and D1=1S2076A (Hitachi).

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