FS8S0765RCBYDTU_NL Fairchild Semiconductor, FS8S0765RCBYDTU_NL Datasheet
![no-image](/images/manufacturer_photos/0/2/252/fairchild_semiconductor_sml.jpg)
FS8S0765RCBYDTU_NL
Specifications of FS8S0765RCBYDTU_NL
Related parts for FS8S0765RCBYDTU_NL
FS8S0765RCBYDTU_NL Summary of contents
Page 1
... FS8S0765RCBYDTU TO-220-5L (Forming) Notes: 1. TU: Non Forming Type 2. YDTU: Forming Type FPS is a trademark of Fairchild Semiconductor Corporation. TM ©2006 Fairchild Semiconductor Corporation FS8S0765RCB Rev. 1.0.2 Description FS8S0765RCB is a Fairchild Power Switch (FPS) that is specially designed for off-line SMPS of CRT monitors with minimal external components. This device is a ...
Page 2
Internal Block Diagram Vref Burst Mode Detector 5 Soft start Vfb<0.8V & Sync Vss>3V No sync Vcc I delay Vcc Vovp TSD FS8S0765RCB Rev. 1.0.2 Vcc 3 Burst Mode 9V/15V Controller Vref Sync Detector OSC Vref ...
Page 3
Pin Configuration Pin Definitions Pin Number Pin Name 1 Drain 2 GND 3 Vcc 4 Feedback 5 Soft Start & Sync FS8S0765RCB Rev. 1.0.2 5. Soft Start & Sink 4. Feedback 3. Vcc 2. GND 1. Drain Figure 2. Pin ...
Page 4
Absolute Maximum Ratings The “Absolute Maximum Ratings” are those values beyond which the safety of the device cannot be guaranteed. The device should not be operated at these limits. The parametric values defined in the Electrical Characteristics tables are not ...
Page 5
... Turn Off Delay Time tf Fall Time Total Gate Charge Qg (Gate-Source+Gate-Drain) Qgs Gate-Source Charge Qgd Gate-Drain (Miller) Charge Note: Pulse test: Pulse width ≤ 300μS, duty 2% 1. MOSFET switching time is essentially independent of operating temperature. 2. FS8S0765RCB Rev. 1.0.2 Condition Min. V =0V, I =250μA 650 =650V, V ...
Page 6
Electrical Characteristics (T =25°C unless otherwise specified) A Symbol Parameter UVLO Section V Start Threshold Voltage START V Stop Threshold Voltage STOP Oscillator Section F Initial Frequency OSC FSTABLE Voltage Stability ΔFOSC Temperature Stability DMAX Maximum Duty Cycle DMIN Minimum ...
Page 7
Typical Performance Characteristics (Control Part) (These characteristic graphs are normalized at T 1.20 1.15 1.10 1.05 1.00 0.95 0.90 0.85 0.80 -40 - Temperature [ ° C] Figure 3. Start Up Current vs. Temp. 1.20 1.15 ...
Page 8
Typical Performance Characteristics (These characteristic graphs are normalized at T 1.7 1.6 1.5 1.4 1.3 1.2 1.1 1.0 0.9 0.8 0.7 0.6 0.5 -40 - Temperature [ ° C] Figure 9. Feedback Offset Voltage vs. Temp. ...
Page 9
Typical Performance Characteristics (These characteristic graphs are normalized at T 1.20 1.15 1.10 1.05 1.00 0.95 0.90 0.85 0.80 -40 - Temperature [ ° C] Figure 15. Normal Mode Regulation Voltage vs. Temp. 1.4 1.3 1.2 ...
Page 10
Typical Performance Characteristics (These characteristic graphs are normalized at T 1.20 1.15 1.10 1.05 1.00 0.95 0.90 0.85 0.80 -40 - Temperature [ ° C] Figure 21. Burst Mode Peak Current vs. Temp. FS8S0765RCB Rev. 1.0.2 ...
Page 11
... MOSFET current caused by primary-side capacitance and secondary-side recovery. To prevent premature termination of the switching pulse due to the current spike, the FPS employs leading edge blanking (LEB). The leading edge blanking circuit inhibits the PWM comparator for a short time after the MOSFET is turned on. Vcc Vref 0 ...
Page 12
... Css than Cfb possible to increase the feedback voltage slowly, forcing the SenseFET current to increase slowly. After Css reaches its steady state value blocked and the soft switching circuit is decoupled from Auto restart the feedback circuit. If the value of Css is too large, there is possibility that Vfb increases to 7 ...
Page 13
... FS8S0765RCB Rev. 1.0.2 operation. At the end of the section 3, the load is eliminated and the feedback voltage (Vfb) drops below 1V, forcing the FPS to stop switching operation. During the section 4, Vcc goes down to 11V. During section 5, Vcc is hysteresis controlled between 11V and 12V. When the external sync signal is applied on the pin 5, the FPS resumes normal operation ...
Page 14
Typical Application Circuit 1. 80W Universal Input Power Supply For CRT Monitor BD101 1 3 C106 + 220μF/400V R103 600K 0 RT101 C105 100nF Line Filter: LF101 C110 1μF/50V + C103 C104 C108 + 4.7nF 4.7nF 22μF/50V C114 C102 1nF ...
Page 15
Winding Specification No Pin (s→f) 4 → 1 Np1 Insulation: Polyester Tape t = 0.050mm, 2 Layers 16 → 15 Nvo1 Insulation: Polyester Tape t = 0.050mm, 2 Layers 7 → 8 Nreg Insulation: Polyester Tape t = 0.050mm, ...
Page 16
Demo Circuit Part List Part Value Fuse F101 3A/250V NTC RT101 10D-9 Resistor R101 56kΩ R102 3.3Ω R103 600kΩ R104 2.2kΩ R105 0.56kΩ R106 0.1kΩ R201 0.1kΩ R202 4kΩ R203 0.7kΩ Inductor L201 ~ L205 13uH Capacitor C101 471D10 ...
Page 17
Package Dimensions TO-220-5L FS8S0765RCB Rev. 1.0.2 Dimensions in millimeters June 2002, Rev www.fairchildsemi.com ...
Page 18
Package Dimensions (Continued) TO-220-5L (Forming) FS8S0765RCB Rev. 1.0.2 Dimensions in millimeters June 2002, Rev www.fairchildsemi.com ...
Page 19
... TRADEMARKS The following are registered and unregistered trademarks Fairchild Semiconductor owns or is authorized to use and is not intended exhaustive list of all such trademarks. ® ACEx™ FAST ActiveArray™ FASTr™ Bottomless™ FPS™ Build it Now™ FRFET™ CoolFET™ ...