FSCM0465RJ Fairchild Semiconductor, FSCM0465RJ Datasheet - Page 13

• Manufacturer Part Number: FSCM0465RJ
• Description: IC SWIT PWM GREEN OVP HV D2PAK
• Manufacturer: Fairchild Semiconductor

Specifications of FSCM0465RJ

• Output Isolation: Isolated
• Frequency Range: 60 ~ 72kHz
• Voltage - Input: 8 ~ 20 V
• Voltage - Output: 650V
• Power (watts): 55W
• Operating Temperature: 25°C ~ 150°C
• Package / Case: TO-263-7, D²Pak (6 leads + Tab), TO-263CB
• Power Switch Family: FSCM0465R
• Input Voltage: 85 to 265V
• Power Switch On Resistance: 2.2Ohm
• Output Current: 2.3A
• Number Of Outputs: Single
• Mounting: Surface Mount
• Supply Current: 2.5mA
• Package Type: D2PAK
• Operating Temperature (min): -25C
• Operating Temperature (max): 85C
• Operating Temperature Classification: Commercial
• Pin Count: 5 +Tab
• Power Dissipation: 140W
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

FSCM0465R Rev. 1.0.1
© 2006 Fairchild Semiconductor Corporation
6. Burst Operation : To minimize power dissipation in
standby mode, the FSCM0465R enters into burst-mode
operation at light load condition. As the load decreases,
the feedback voltage decreases. As shown in Figure 23,
the device automatically enters burst mode when the
feedback voltage drops below V
point, switching stops and the output voltages start to
drop at a rate dependent on standby current load. This
causes the feedback voltage to rise. Once it passes
V
voltage then falls and the process repeats. Burst mode
operation alternately enables and disables switching of
the power SenseFET, thereby reducing switching loss in
standby mode.
BURH
FSCM0465R Rev. 00
Vo
Vds
V
0.3V
0.5V
Ids
Vo
FB
set
Figure 23. Waveforms of Burst Operation
(500mV), switching resumes. The feedback
T1
Switching
disabled
T2 T3
BURL
Switching
disabled
(300mV). At this
T4
time
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