PQ30RV11 Sharp Electronics, PQ30RV11 Datasheet - Page 7

• Manufacturer Part Number: PQ30RV11
• Manufacturer: Sharp Electronics

Specifications of PQ30RV11

• Voltage Regulator Type: Linear
• Topology: LDO
• Regulator Output Type: Adjustable
• Polarity Type: Positive
• Number Of Outputs: Single
• Input Voltage (min): 4.5V
• Input Voltage (max): 35V
• Output Voltage: 1.5 to 30V
• Package Type: TO-220
• Output Current: 1A
• Power Dissipation: 15W
• Load Regulation: 1%
• Line Regulation: 2.5%
• Output Voltage Accuracy: ±2%
• Operating Temp Range: -20C to 80C
• Operating Temperature Classification: Commercial
• Dropout Voltage@current (max): 0.5@500mA
• Pin Count: 4 +Tab
• Mounting: Through Hole
• Quiescent Current (max): 7mA
• Lead Free Status / Rohs Status: Not Compliant

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