MC33470 Datasheet, PDF (6/16 Pages) ON Semiconductor – SYNCHRONOUS RECTIFICATION DC/DC CONVERTER PROGRAMMABLE INTEGRATED CONTROLLER

MC33470
Figure 7. Drive Output Source/Sink Saturation
Voltage versus Load Current
1000
0
Gain
30
100
VCCP = 12 V
VCC = 5.0 V
VO = 2.8 V
R2 = 18.2 k
C16 = 0
10
TA = 25°C
Figure 13
60
90
Phase
120
150
1.0
1.0
10
100
FREQUENCY (kHz)
180
1000
Figure 8. Feedback Threshold Voltage
versus Temperature
0.8
IO = 3.3 A
0.6
VO = 2.8 V
0.4
0.2
0
–0.2
–75 –50
–25 0 25 50 75
TA, AMBIENT TEMPERATURE (°C)
100 125
Figure 9. Imax Current versus Temperature
4.0
2.0
IO = 3.3 A
VO = 2.8 V
0
–2.0
–4.0
–6.0
–75 –50 –25 0 25 50 75 100 125
TA, AMBIENT TEMPERATURE (°C)
Figure 10. Vsense Current Source
versus Temperature
5.0
4.0
IO = 3.3 A
2.0 ^{VO = 2.8 V}
0
–2.0
–4.0
–5.0
–75 –50
–25 0 25 50 75
TA, AMBIENT TEMPERATURE (°C)
100 125
Figure 11. VCC Undervoltage Lockout Trip Point
versus Temperature
1.0
0.5
0
–0.5
–1.0
–1.5
–2.0
–2.5
–3.0
VCC Increasing
–3.5
IO = 3.3 A
VO = 2.8 V
–4.0
–75 –50 –25 0 25 50 75 100 125
TA, AMBIENT TEMPERATURE (°C)
Figure 12. Oscillator Frequency
versus Temperature
2.5
2.0
1.5 _{IO = 3.3 A}
1.0 ^{VO = 2.8 V}
0.5
0
–0.5
–1.0
–1.5
–2.0
–2.5
–75 –50 –25 0 25 50 75 100 125
TA, AMBIENT TEMPERATURE (°C)
6
MOTOROLA ANALOG IC DEVICE DATA