mc33362p ON Semiconductor, mc33362p Datasheet - Page 4

• Manufacturer Part Number: mc33362p
• Description: High Voltage Switching Regulator
• Manufacturer: ON Semiconductor

0.15
− 20
100
1.0
0.7
0.5
0.3
0.2
0.1
80
60
40
20
1.0 M
500 k
200 k
100 k
0
5.0
10
50 k
20 k
10 k
5.0
Figure 6. Error Amp Open Loop Gain and
C
C
C
C
C
C
T
T
T
T
T
T
Figure 4. Oscillator Charge/Discharge
Phase
= 200 pF
= 500 pF
= 1.0 nF
= 2.0 nF
= 5.0 nF
= 10 nF
100
Current versus Timing Resistor
Figure 2. Oscillator Frequency
Phase versus Frequency
10
R
1.0 k
versus Timing Resistor
T
, TIMING RESISTOR (kW)
Gain
10
R
f, FREQUENCY (Hz)
T
, TIMING RESISTOR (kW)
15
10 k
15
C
20
T
= 100 pF
100 k
20
V
V
R
C
T
A
CC
O
L
L
= 25°C
= 5.0 MW
= 2.0 pF
= 1.0 to 4.0 V
30
V
T
= 20 V
A
CC
1.0 M
= 25°C
30
= 20 V
V
T
A
CC
= 25°C
http://onsemi.com
= 20 V
10 M
50
0
30
60
90
120
150
180
50
4
− 2.0
−1.0
2.0
1.0
2.0
1.5
1.0
0.8
0.6
0.4
0.2
70
60
50
40
30
0
0
5.0
1.0
0
Inductor supply voltage and inductance value are
adjusted so that I
Figure 3. Power Switch Peak Drain Current
Figure 7. Error Amp Output Saturation
Figure 5. Maximum Output Duty Cycle
7.0
0.2
R
Discharge Resistor
Pin 7 to GND
versus Timing Resistor Ratio
Source Saturation)
Voltage versus Load Current
(Load to Ground)
D
I
/R
O
versus Timing Resistor
, OUTPUT LOAD CURRENT (mA)
T
pk
2.0
10
R
Ratio
Sink Saturation
TIMING RESISTOR RATIO
turn−off is achieved at 5.0 ms.
T
(Load to V
, TIMING RESISTOR (kW)
0.4
15
3.0
ref
)
0.6
20
GND
V
ref
5.0
R
Charge Resistor
Pin 7 to V
V
T
30
C
A
CC
0.8
/R
= 25°C
V
C
T
V
C
T
T
= 20 V
A
A
7.0
CC
CC
T
T
Ratio
= 25°C
= 25°C
= 2.0 nF
= 1.0 mF
= 20 V
= 20 V
reg
40
1.0
50
10