Datasheet

Figure 16:
Programmable Under Voltage Lock-
out Thresholds
Table 1:
Programmable Under Voltage Lockout Thresholds.
V
CC ON
V
CC OFF
R22 R23
11V 10V 82kΩ 12kΩ
12V 10.1V 220kΩ 33kΩ
13V 10.5V 430kΩ 62kΩ
14V 10.8V 909kΩ 133kΩ
14.5V 10.9V 1.36MΩ 200kΩ
15V 11V 2.7MΩ 390kΩ
Vl
0.8
1
0.4
0.2
0
0
45
90
135
Electrical degrees
180
0.8
1
0.4
0.2
0
fsw
Figure 17:
Modulation Frequency Normalized in
an Half Cycle of the Mains Voltage
Figure 18:
Oscillator Diagram
R22 = R23
⋅
6.8
R23 (Kohm)
L4981A - L4981B
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