NCP1010ST100T3 ON Semiconductor, NCP1010ST100T3 Datasheet - Page 12
![IC OFFLINE SWIT SMPS CM SOT223](/photos/26/98/269860/sot223_sml.jpg)
NCP1010ST100T3
Manufacturer Part Number
NCP1010ST100T3
Description
IC OFFLINE SWIT SMPS CM SOT223
Manufacturer
ON Semiconductor
Datasheet
1.NCP1010ST100T3G.pdf
(24 pages)
Specifications of NCP1010ST100T3
Output Isolation
Isolated
Frequency Range
90 ~ 110kHz
Voltage - Input
8.5 ~ 10 V
Voltage - Output
700V
Power (watts)
19W
Operating Temperature
-40°C ~ 125°C
Package / Case
TO-261-4, TO-261AA, SOT-223-4
Duty Cycle (max)
72 %
Mounting Style
SMD/SMT
Switching Frequency
110 KHz
Operating Supply Voltage
- 0.3 V to + 10 V
Maximum Operating Temperature
+ 150 C
Synchronous Pin
No
Topology
Flyback
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
NCP1010ST100T3G
Manufacturer:
ON Semiconductor
Quantity:
3 300
Lowering the Standby Power with Skip- -Cycle
power by skipping unwanted cycles at light loads.
However, the recurrent frequency in skip often enters the
audible range and a high peak current obviously generates
acoustic noise in the transformer. The noise takes its origins
in the resonance of the transformer mechanical structure
Skip- -cycle offers an efficient way to reduce the standby
Figure 18. A more detailed view of the NCP101X offers better insight on how to
Permanent
Figure 19. The burst frequency becomes so low that it is difficult to keep
Latch
Vclamp = 8.7 V typ.
VCC
VCC
ON
OFF
= 8.5 V
= 7.5 V
an adequate level on the auxiliary V
+
+
properly wire an auxiliary winding.
+
--
--
+
>30 ms
--
+
http://onsemi.com
+
12
I > 7.4m
(Typ.)
Startup Source
Ground
which is excited by the skipping pulses. A possible
solution, successfully implemented in the NCP1200 series,
also authorizes skip- -cycle but only when the power
demand has dropped below a given level. At this time, the
peak current is reduced and no noise can be heard.
Figure 20 pictures the peak current evolution of the
NCP101X entering standby.
V
CC
Drain
+
CVcc
Rlimit
CC
. . .
+
Caux
D1
Laux