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UC2845N Fiches technique(PDF) 5 Page - STMicroelectronics

No de pièce UC2845N
Description  CURRENTMODE PWM CONTROLLER
Download  11 Pages
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Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

UC2845N Fiches technique(HTML) 5 Page - STMicroelectronics

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Figure 1 : Error Amp Configuration.
Error amp can source or
sink up to 0.5mA
Figure 2 : Under Voltage Lockout.
During Under-Voltage Lockout, the output driver is
biased to sink minor amounts of current. Pin 6
should be shunted to ground with a bleederresistor
to prevent activating the power switch with extrane-
ous leakage currents.
Figure 3 : Current Sense Circuit .
Peak current (is) is determined by the formula
1.0 V
IS max
RS
A small RC filter may be required to suppress switch transients.
UC2842/3/4/5-UC3842/3/4/5
5/11


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