ncp1651 ON Semiconductor, ncp1651 Datasheet - Page 7

• Manufacturer Part Number: ncp1651
• Description: Single Stage Power Factor Controller
• Manufacturer: ON Semiconductor

V
STARTUP
ENABLE
OUTPUT
CURRENT
FB/SD
SHUTDOWN
BLANKING PULSE
CC
FB/SD
OSCILLATOR
OSCILLATOR
10.8 V
LATCH Q
9.8 V
0.5 V
MAX
OFF
DRIVE
ON
RAMP
0.5 V
GND
GND
0
0
4 V
STARTUP
AC Error Amp + Ramp Comp + Inductor Current
7
8
Figure 3. Divide−by−Eight Counter Timing Diagram
Figure 2. Switching Timing Diagram
CURRENT LIMIT
1
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NCP1651
2
7
3
7
8
7
SHUTDOWN
7
7
7
8