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KA3846 Datasheet(PDF) 5 Page - Fairchild Semiconductor

Part No. KA3846
Description  SMPS Controller
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Maker  FAIRCHILD [Fairchild Semiconductor]
Homepage  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

KA3846 Datasheet(HTML) 5 Page - Fairchild Semiconductor

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KA3846
5
OUTPUT DEADTIME(Td)
Figure 1. KA3846 Oscillator Circuit
Output deadtime is determined by the external capacitor, CT, according to the formula:
For large values of RT: Td (us) = l45CT (uF) Oscillator frequency is approximately
by the formula:
Figure 2. Error Amplifier Output Configuration
Td
Td us
() 145C
T µF
()
12
12
3.6
R
T KΩ
()
---------------------
----------------------------------





=
f
T KHz
()
2.2
R
T KΩ
()C
T µF
()
------------------------------------------
=


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