mc33363dwr2 ON Semiconductor, mc33363dwr2 Datasheet - Page 4

• Manufacturer Part Number: mc33363dwr2
• Description: High Voltage Switching Regulator
• Manufacturer: ON Semiconductor

− 20
100
1.0 M
500 k
200 k
100 k
80
60
40
20
50 k
20 k
10 k
0
10
0.15
0.08
7.0
0.8
0.5
0.3
0.2
0.1
C
C
C
C
C
C
C
T
T
T
T
T
T
T
7.0
Figure 5. Error Amp Open Loop Gain and
= 100 pF
= 200 pF
= 500 pF
= 1.0 nF
= 2.0 nF
= 5.0 nF
= 10 nF
Phase
100
10
Figure 3. Oscillator Charge/Discharge
Figure 1. Oscillator Frequency
10
Phase versus Frequency
Current versus Timing Resistor
versus Timing Resistor
1.0 k
R
Gain
T
15
f, FREQUENCY (Hz)
, TIMING RESISTOR (kW)
R
T
15
, TIMING RESISTOR (kW)
10 k
20
20
100 k
30
30
V
V
R
C
T
A
CC
O
L
L
= 25°C
= 5.0 MW
= 2.0 pF
= 1.0 to 4.0 V
= 20 V
1.0 M
V
T
A
CC
V
T
A
= 25°C
CC
50
= 20 V
= 25°C
http://onsemi.com
= 20 V
50
10 M
70
0
30
60
90
120
150
180
70
4
− 2.0
−1.0
1.0
0.8
0.6
0.4
0.2
0.1
2.0
1.0
70
60
50
40
30
0
0
7.0
1.0
0
Inductor supply voltage and inductance value are
adjusted so that I
Figure 2. Power Switch Peak Drain Current
Figure 6. Error Amp Output Saturation
Figure 4. Maximum Output Duty Cycle
10
0.2
Voltage versus Load Current
R
Discharge Resistor
Pin 6 to GND
versus Timing Resistor Ratio
Source Saturation
(Load to Ground)
D
I
/R
O
versus Timing Resistor
pk
, OUTPUT LOAD CURRENT (mA)
T
R
2.0
turn−off is achieved at 5.0 ms.
Ratio
T
Sink Saturation
15
, TIMING RESISTOR (kW)
TIMING RESISTOR RATIO
(Load to V
0.4
20
3.0
ref
)
0.6
30
GN
D
V
ref
5.0
40
V
T
R
Charge Resistor
Pin 6 to V
A
CC
C
0.8
= 25°C
V
C
T
/R
A
CC
= 20 V
T
V
C
T
T
A
= 25°C
CC
7.0
= 1.0 mF
T
50
Ratio
= 20 V
= 25°C
= 2.0 nF
= 20 V
reg
1.0
70
10