ML4818 Просмотр технического описания (PDF) - Micro Linear Corporation
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ML4818 Datasheet PDF : 12 Pages
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120
100
80
60
40
20
0
0
180
GAIN
135
PHASE
90
45
0
100
1k
10k
100k
1M
10M
FREQUENCY
Figure 6. Error Amplifier Open-Loop Gain and
Phase vs. Frequency.
7
6
5
4
3
SOURCE
2
SINK
1
0
0
0.2 0.4 0.6 0.8 1.0 1.2 1.4
OUTPUT CURRENT (A)
Figure 8. Output Drive Saturation Voltage vs.
Output Current.
OUTPUT DRIVER STAGE
The ML4818 has four high current high speed totem pole
output drivers each capable of 1.5A peak output, designed
to quickly switch the gates of capacitive loads, such as
power MOSFET transistors. Figure 8 illustrates the
saturation characteristics of the ouput drive transistors
shown in Figure 7. Typical rise and fall time characteristics
of the output drivers are illustrated with capacitive loads
of 1nF and 10nF in Figure 9.
ML4818
VCC
VCC
Q2
OUT
Q1
POWER
GND
Figure 7. Power Driver Simplified Schematic.
15
10
5 1nF
10nF
1nF
10nF
100 200
tF
(ns)
100 200
tR
Figure 9. Output Rise/Fall Time.
7
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