MC44603 Datasheet, PDF (6/24 Pages) ON Semiconductor – MIXED FREQUENCY MODE GREENLINE PWM CONTROLLER

MC44603
Figure 1. Timing Resistor versus
Oscillator Frequency
100
CT = 100 pF
VCC = 16 V
TA = 25°C
CT = 500 pF
CT = 1000 pF
10
CT = 2200 pF
3.0
10 k
100 k
fOSC, Oscillator Frequency (Hz)
1.0 Meg
10000
Figure 2. Standby Mode Timing Capacitor
versus Oscillator Frequency
RF _Stby = 2.0 k
VCC = 16 V
TA = 25°C
Rref = 10 k
1000
300
10 k
RF _Stby = 5.0 k
RF _Stby = 27 k
RF _Stby = 100 k
100 k
fOSC, Oscillator Frequency (Hz)
1.0 Meg
Figure 3. Oscillator Frequency
versus Temperature
52
51
50
49
48
47
46
VCC = 12 V
45
Rref = 10 k
CT = 820 pF
44
–50
–25
0
25
50
75
100
TA, AMBIENT TEMPERATURE (°C)
Figure 4. Ratio Charge Current/Reference
Current versus Temperature
0.43
0.42
0.41
0.40
0.39
0.38
0.37
–50
VCC = 12 V
Rref = 10 k
CT = 820 pF
–25
0
25
50
75
100
TA, AMBIENT TEMPERATURE (°C)
600
400
200
0
–200
–400
–600
–800
–1000
Figure 5. Output Waveform
Current
VCC = 12 V
CL = 2200 pF
TA = 25°C
Voltage
1.0 µs/Div
Figure 6. Output Cross Conduction
70
70
300
60
60
VCC = 12 V
CL = 2200 pF
200
50
50 ^{TA = 25°C}
100
Current
40
40
0
30
30
–100
20
20
–200
10
10 ^VO
–300
Voltage
0
0
–400
–10
–10 ^ICC
–500
1.0 µs/Div
6
MOTOROLA ANALOG IC DEVICE DATA