ML4823 Ver la hoja de datos (PDF) - Fairchild Semiconductor
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ML4823 Datasheet PDF : 9 Pages
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ML4823
ERROR AMPLIFIER
The ML4823 error amplifier is a 5.5MHz bandwidth 12V/µs
slew rate op-amp with provision for limiting the positive
output voltage swing (Output Inhibit line) for ease in
implementing the soft start function.
5
4
VIN
3
2
VOUT
1
0
0.2
0.4
0.6
0.8
1.0
TIME (µs)
Figure 5. Unity Gain Slew Rate
OUTPUT DRIVER STAGE
The ML4823 Output Driver is a 2A peak output high speed
totem pole circuit designed to quickly switch the gates of
capacitive loads, such as power MOSFET transistors.
VCC
POWER
VC
Q2
OUT
Q1
POWER
GND
Figure 7. Simplified Schematic
3
2
SOURCE
1
SINK
0
0
0.5
1.0
1.5
IOUT (A)
Figure 8. Saturation Curves
6
100
80
60
GAIN
40
20
0
0
φ
0
–20
–90
–180
100 1K 10K 100K 1M 10M 100M
FREQ (Hz)
Figure 6. Open Loop Frequency Response
15
10
5
0
0
0.2
IL (A)
0
–0.2
40
80
120
160
200
TIME (ns)
Figure 9. Rise/Fall Time (CL = 1000pF)
2
IL (A)
0
15
–2
10
5
0
0
100
200
300
400
500
TIME (ns)
Figure 10 Rise/Fall Time (CL = 10,000pF)
REV. 1.0 10/12/2000
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