参数资料
型号: ADP198CP-EVALZ
厂商: Analog Devices Inc
文件页数: 13/16页
文件大小: 0K
描述: BOARD EVAL FOR ADP198
标准包装: 1
系列: *
Data Sheet
ENABLE FEATURE
The ADP198 uses the EN pin to enable and disable the VOUT
pin under normal operating conditions. As shown in Figure 25,
when a rising V EN voltage crosses the active threshold, VOUT
turns on. When a falling V EN voltage crosses the inactive
threshold, VOUT turns off.
ADP198
The EN pin active/inactive thresholds derive from the V IN voltage;
therefore, these thresholds vary with the changing input voltage.
Figure 26 shows the typical EN active/inactive thresholds when
the input voltage varies from 1.65 V to 6.5 V.
1.2
1.1
2.0
1.8
1.0
EN RISE
EN FALL
1.6
1.4
1.2
V IN RISING
V IN FALLING
0.9
0.8
0.7
1.0
0.6
0.8
0.6
0.4
0.5
0.4
1
2
3
4
5
6
7
0.2
0
INPUT VOLTAGE (V)
Figure 26. Typical EN Thresholds vs. Input Voltage (V IN )
0.45
0.50
0.55
0.60
0.65
0.70
0.75
0.80
ENABLE VOLTAGE (V)
Figure 25. Typical EN Operation
As shown in Figure 25, the EN pin has hysteresis built in. This
prevents on/off oscillations that can occur due to noise on the
EN pin as it passes through the threshold points.
Rev. G | Page 13 of 16
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