pq1cf2 ETC-unknow, pq1cf2 Datasheet - Page 4

• Manufacturer Part Number: pq1cf2
• Description: To-220 Type Chopper Regulator
• Manufacturer: ETC-unknow

V
8 to 35V
Chopper Regulators
IN
Fig. 9 Oscillation Frequency Fluctuation
Fig.11 Threshold Voltage vs. Junction
Step-down Type Circuit Diagram (5V Output)
–10
4.5
3.5
2.5
1.5
0.5
–5
4
3
2
1
5
0
–50
–25
vs. Junction Temperature
Temperature
C
100 F
+
IN
–25
Junction temperature T
Junction temperature T
0
1
V
V
V
PQ1CF2
THH
THL
TH(ON)
0
4
3
25
2
5
C
25
S
50
ON/OFF control
50
R
S
75
D R
L
210 H
75
R
3k
1k
j
j
V
2
1
V
Vo=5V
(˚C)
(˚C)
100
IN
IN
100
=12V
=12V
125
R
125
C
470 F
S
+
<=50k
O
V
O
=5V
Fig.10 Overcurrent Detecting Level
Fig.12 Operating Consumption Current vs.
–10
–15
15
10
–5
10
5
0
9
8
7
6
5
–25
0
Fluctuation vs. Junction Temperature
Input Voltage
Junction temperature T
0
10
Input voltage V
25
Io=0.2A
No load
50
Io=1A
20
75
IN
(V)
j
30
(˚C)
100
T
Vo=5V
j
=25˚C
PQ1CF2
125
40