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UC2844AD1 Datasheet(PDF) 8 Page - STMicroelectronics

Part # UC2844AD1
Description  HIGH PERFORMANCE CURRENT MODE PWM CONTROLLER
PDF  16 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

UC2844AD1 Datasheet(HTML) 8 Page - STMicroelectronics

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UC384XA - UC284XA
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Figure 18. Under Voltage Lockout.
Figure 19. Current Sense Circuit.
Peak current (is) is determined by the formula
A small RC filter may be required to suppress switch transients.
Figure 20. Slope Compensation Techniques.
UC3842A
UC3844A
UC3843A
UC3845A
16V
8.4V
10V
7.6V
VON
VOFF
Vi
ON/OFF COMMAND
TO REST OF IC
7
<0.5mA
<17mA
ICC
VCC
VOFF VON
D95IN346mod
ERROR
AMPL.
2R
R1V
CURRENT
SENSE
COMPARATOR
1
CURRENT
SENSE
COMP
C
RS
R
3
5
GND
IS
D95IN347
I
Smax
1.0V
R
S
------------
≈
RS
R1
IS
RSLOPE
CT
RT
VREG
8
RT/CT
ISENSE
4
3
5
GND
RS
R1
IS
RSLOPE
CT
RT
VREG
8
RT/CT
ISENSE
4
3
5
GND
D95IN348



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