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UC2843AN(1999) View Datasheet(PDF) - STMicroelectronics

Part Name
Description
Manufacturer
UC2843AN
(Rev.:1999)
ST-Microelectronics
STMicroelectronics ST-Microelectronics
UC2843AN Datasheet PDF : 15 Pages
1 2 3 4 5 6 7 8 9 10 Next Last
UC2842A/3A/4A/5A - UC3842A/3A/4A/5A
Figure 14 : Error Amp Configuration.
2.5V
+
Zi
VFB 2
-
COMP 1
Zf
1mA
D95IN345
Figure 15 : Under Voltage Lockout.
7
ON/OFF COMMAND
Vi
TO REST OF IC
ICC
VON
VOFF
UC3842A UC3843A
UC3844A UC3845A
16V
8.4V
10V
7.6V
<17mA
<0.5mA
VOFF VON
VCC
Fig.15-UC3842A
Figure 16 : Current Sense Circuit .
ERROR
AMPL.
2R
IS
1
COMP
R
R
3
CURRENT
RS
C
SENSE
5
GND
D95IN347
Peak current (is) is determined by the formula
IS
max
1.0 V
RS
A small RC filter may be required to suppress switch transients.
8/15
1V
CURRENT
SENSE
COMPARATOR
 

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