MC33470DW ON Semiconductor, MC33470DW Datasheet - Page 5

• Manufacturer Part Number: MC33470DW
• Description: IC CONV DC/DC SYNC RECT 20-SOIC
• Manufacturer: ON Semiconductor

Specifications of MC33470DW

• Applications: Controller, Intel Pentium® II
• Voltage - Input: 4.5 ~ 5.5 V
• Number Of Outputs: 1
• Voltage - Output: 1.8 ~ 3.5 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 20-SOIC (7.5mm Width)
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

0
Figure 4. Error Amplifier Transient Response
Figure 2. Output Drive Waveform
Figure 6. Feedback Circuit Load
Transient Response
V
I
Figure 14 Circuit
V
I
Figure 14 Circuit
O
O
O
O
transient = 0.3 to 16 A
transient = 0.3 to 16 A
V
I
Figure 14 Circuit
= 2.8 V
= 2.8 V
O
O
200 nS/DIV
2.5 mS/DIV
2.5 mS/DIV
= 3.3 A
= 2.8 V
http://onsemi.com
MC33470
5
−5.0
−0.5
−1.0
−10
5.0
8.0
7.0
6.0
5.0
4.0
3.0
2.0
1.0
1.0
0.5
20
15
10
0
0
0
0
300
0
0
Figure 5. Drive Output Source/Sink Saturation
T
V
V
V
I
T
O
A
A
Figure 7. Feedback Loop Gain and Phase
CCP
CC
O
= 3.3 A
= 25°C
= 25°C
= 2.8 V
1.0
= 5.0 V
Source Saturation
(Load to Ground)
= 12 V
Sink Saturation
(Load to P V
0.2
1.0 k
Figure 3. 5.0 V Supply Current
Voltage versus Load Current
2.0
3.0 k
CC
0.4
versus Frequency
P V
INPUT VOLTAGE (V)
f, FREQUENCY (Hz)
3.0
)
CC
+ 12 V
Gain
0.6
4.0
10 k
P V
CC
5.0
30 k
+ Open
0.8
6.0
Phase
1.0
100 k
7.0
Ground
P V
CC
300 k
8.0
1.2
0
30
60
90
120
150
180