4
Sheet No.: OP06041
PQ1CZ41H2ZxH
Fig.10 Oscillation Frequency Fluctuation vs.
Junction Temperature
Junction temperature T
j
(°C)
Oscillation frequency fluctuation ΔfO(%)
Fig.11 Overcurrent Detecting Level
Fluctuation vs. Junction Temperature
Overcurrent detecting level fluctuation (%)
Junction temperature T
j
(°C)
Junction temperature T
j
(°C)
ON threshold voltage VTHON,VTHL,VTHH (V)
Fig.12 On Threshold Voltage vs. Junction
Temperature
IO=1A
IO=0.2A
No Load
010 203040
5
6
10
7
8
9
Tj=25°C
V
O=5V
Fig.13 Operating Dissipation Current vs.
Input Voltage
Input voltage V
IN
(V)
Operating dissipation current I
Q
' (mA)
Fig.14 Power Dissipation vs. Ambient
Temperature (Typical Value)
Ambient temperature T
a
(°C)
Power dissipation P
D
(W)
-10
-5
0
5
10
-25 0 25 50 75 100 125-40
Tj=25°C
-10
-5
0
5
10
-25 0 25 50 75 100 125-40
VIN=12V
V
O＝5V
0
0.5
1
1.5
2
2.5
3
-25 0 25 50 75 100 125-40
VIN=12V
VTHON
VTHH
VTHL
0
0.5
1
1.5
-20 0 20 40 60 80 100-40 120
12585
2
Cu area 740mm
2
Cu area 180mm
2
Cu area 100mm
2
Cu area 70mm
2
Cu area 36mm
2
Material : Glass-cloth epoxy resin
Size
Cu thickness
Mounting PCB
PCB
Cu
: 50×50×1.6mm
: 35μm
