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NCP1339DDR2G Datasheet(PDF) 4 Page - ON Semiconductor

Part # NCP1339DDR2G
Description  High-Voltage, QuasiResonant Controller featuring Valley Lock-Out and Power Saving Mode
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Manufacturer  ONSEMI [ON Semiconductor]
Direct Link  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

NCP1339DDR2G Datasheet(HTML) 4 Page - ON Semiconductor

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NCP1339
www.onsemi.com
4
Figure 3. NCP1339 Functional Block Diagram
Fault
Latch
Vfault(OVP)
Vfault(OTP)
S
R
Q
Q
BONOK
Ifault(OTP)
Rfault(clamp)
Vfault(clamp)
5V
CS
/Kfb
LEB
tcs(LEB2)
FB
ICS
5V
OPP
Vilim2
Vilim1
LEB
tcs(LEB1)
+
Counter count
Reset
Overload Timer
Count Up
Count Down
PWM
comparator
Peak current
Comparator with OPP
Peak current
Comparator W/O OPP
Short Circuit
Comparator
Vfreeze
Frozen Curent
Comparator
Ip_flag
PWM
Reset
Overcurrent
CSStop
DRV
VOPP
VOPP
Thermal
Shutdown
Auto−Restart
Fault Control
DRV
S
R
Q
Q
Latch
PWM Reset
Overcurrent
QR Clock
Clamp
VCC
ZCD
+
Vzcd(th)
Blanking Time
Tzcd(blank)
Timeout
QR
Logic
DRV
(internal)
(internal)
QR clock
VFB
DEMAG
HV
REM
X2
VCC
VCC charge
X2 Capacitor discharge
BONOK detection
Line monitoring
PSM control
HV(stop)
Latch
VFB
BO_buf
Fault or PSM
VCC Management
and internal Reference
HV(stop)
UVLO
VDD
Circuit reset
When VCC<VCC(reset)
VCC(OVP)
Clock_25 kHz
Delay
25−kHz
Frequency Clamp
Clock_25 kHz
DRV
Vskip
FB
Skip
Skip Comparator
GND
IFF
IFF(bias)
5V
VIFF
I and J versions only
or VIFF/4


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