Maker : Fairchild
Part No. : Q0370RNA

  Datasheet PDF : Q0370RNA.pdf
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Product Information

FSQ0170RNA, FSQ0270RNA, FSQ0370RNA Green Mode Fairchild Power Switch (FPS™) December 2006 FSQ0170RNA, FSQ0270RNA, FSQ0370RNA Green Mode Fairchild Power Switch (FPS™) Features Internal Avalanche Rugged 700V SenseFET Consumes only 0.8W at 230 VAC & 0.5W Load with Burst-Mode Operation Precision Fixed Operating Frequency, 100kHz www.DataSheet4U.com Internal Start-up Circuit and Built-in Soft-Start Pulse-by-Pulse Current Limiting and Auto-Restart Mode Over-Voltage Protection (OVP), Overload Protection (OLP), Internal Thermal Shutdown Function (TSD) Under-Voltage Lockout (UVLO) Low Operating Current (3mA) Adjustable Peak Current Limit Description The FSQ0170RNA, FSQ0270RNA, FSQ0370RNA consists of an integrated current mode Pulse Width Modulator (PWM) and an avalanche-rugged 700V Sense FET. It is specifically designed for high-performance offline Switch Mode Power Supplies (SMPS) with minimal external components. The integrated PWM controller features include: a fixed-frequency generating oscillator, Under-Voltage Lockout (UVLO) protection, Leading Edge Blanking (LEB), an optimized gate turn-on/ turn-off driver, Thermal Shutdown (TSD) protection, and temperature compensated precision current sources for loop compensation and fault protection circuitry. Compared to a discrete MOSFET and controller or RCC switching converter solution, the FSQ0170RNA, FSQ0270RNA, FSQ0370RNA reduces total component count, design size, and weight while increasing efficiency, productivity, and system reliability. These devices provide a basic platform that is well suited for the design of cost-effective flyback converters, as in PC auxiliary power supplies. Applications Auxiliary Power Supply for PC and Server SMPS for VCR, SVR, STB, DVD & DVCD Player, Printer, Facsimile & Scanner Adapter for Camcorder Related Application Notes AN-4134: Design Guidelines for Off-line Forward Converters Using Fairchild Power Switch (FPS™) AN-4137: Design Guidelines for Off-line Flyback Converters Using Fairchild Power Switch (FPS™) AN-4141: Troubleshooting and Design Tips for Fairchild Power Switch (FPS™) Flyback Applications AN-4147: Design Guidelines for RCD Snubber of Flyback AN-4148: Audible Noise Reduction Techniques for FPS™ Applications 8-DIP Ordering Information Product Number FSQ0170RNA FSQ0270RNA FSQ0370RNA Package 8DIP 8DIP 8DIP Marking Code Q0170R Q0270R Q0370R BVDSS 700V 700V 700V fOSC 100kHz 100kHz 100kHz RDS(ON) (MAX.) 11Ω 7.2Ω 4.75Ω FPSTM is a trademark of Fairchild Semiconductor Corporation. © 2006 Fairchild Semiconductor Corporation FSQ0170RNA, FSQ0270RNA, FSQ0370RNA Rev. 1.0.1 www.fairchildsemi.com FSQ0170RNA, FSQ0270RNA, FSQ0370RNA Green Mode Fairchild Power Switch (FPS™) Application Diagram AC IN DC OUT Vstr IPK PWM FB Drain VCC GND FSQ0x70RNA Rev. 1.01 www.DataSheet4U.com Figure 1. Typical Flyback Application Output Power Table(1) Product FSQ0170RNA FSQ0270RNA FSQ0370RNA 230VAC ±15%(2) Adapter 14W 17W 20W (3) 85–265VAC (4) Open Frame 20W 24W 27W Adapter 9W 11W 13W (3) Open Frame(4) 13W 16W 19W Notes: 1. The maximum output power can be limited by junction temperature. 2. 230 VAC or 100/115 VAC with doubler. 3. Typical continuous power in a non-ventilated enclosed adapter with sufficient drain pattern as a heat sink, at 50°C ambient. 4. Maximum practical continuous power in an open-frame design with sufficient drain pattern as a heat sink, at 50°C ambient. Internal Block Diagram VCC 2 ICH Vstr 5 Drain 6,7,8 8V/12V VBURL/VBURH VCC IDELAY VCC OSC IFB 2.5R VCC good Vref Internal Bias FB 3 IPK 4 R Normal Burst PWM S R Q Q LEB Gate Driver VSD VCC Vovp TSD VCC good S R Q Q Soft-Start FSQ0x70RNA Rev. 1.00 1 GND Figure 2. Internal Block Diagram © 2006 Fairchild Semiconductor Corporation FSQ0170RNA, FSQ0270RNA, FSQ0370RNA Rev. 1.0.1 2 www.fairchildsemi.com FSQ0170RNA, FSQ0270RNA, FSQ0370RNA Green Mode Fairchild Power Switch (FPS™) Pin Configuration GND VCC FB IPK FSQ0x70RNA Rev. 1.00 D D ...

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