MC33365 Datasheet, PDF (5/12 Pages) ON Semiconductor – HIGH VOLTAGE OFF-LINE SWITCHING REGULATOR

MC33365
Figure 9. Regulator Output Voltage
Change versus Source Current
0
2.0
VCC = 20 V
RT = 10 k
–20
CPin ₈ = 1.0 µF
TA = 25°C
–40
1.0
Figure 10. Peak Startup Current
versus Power Supply Voltage
VPin ₁ = 400 V
TA = 25°C
–60
–80
0
4.0
8.0
12
16
20
Ireg, REGULATOR SOURCE CURRENT (mA)
Pulse tested with an on–time of 20 µs to 300 µs
at < 1.0% duty cycle. The on–time is adjusted at
Pin 1 for a maximum peak current out of Pin 3.
0
0
2.0 4.0 6.0 8.0
10
12
14
VCC, POWER SUPPLY VOLTAGE (V)
Figure 11. Power Switch Drain–Source
On–Resistance versus Temperature
32
ID = 200 mA
24
16
8.0
0
–50 –25
Pulse tested at 5.0 ms with < 1.0% duty cycle
so that TJ is as close to TA as possible.
0 25 50 75 100 125 150
TA, AMBIENT TEMPERATURE (°C)
Figure 12. Power Switch
Drain–Source Capacitance versus Voltage
160
VCC = 20 V
TA = 25°C
120
80
40
COSS measured at 1.0 MHz with 50 mVpp.
0
1.0
10
100
1000
VDS, DRAIN–SOURCE VOLTAGE (V)
Figure 13. Supply Current versus Supply Voltage
3.2
CT = 390 pF
2.4
CT = 2.0 nF
1.6
RT = 10 k
0.8
Pin 1 = Open
Pin 4, 5, 10, 11,
12, 13 = Gnd
TA = 25°C
0
0
10
20
30
40
VCC, SUPPLY VOLTAGE (V)
Figure 14. DW and P Suffix Transient
Thermal Resistance
100
L = 12.7 mm of 2.0 oz. copper.
Refer to Figure 15.
10
1.0
0.01
0.1
1.0
10
100
t, TIME (s)
MOTOROLA ANALOG IC DEVICE DATA
5