FAN7601BG

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Buyer is responsible for its products and applications using ON Semiconductor products, including compliance with all laws, regulations and safety requirements or standards, regardless of any support or applications information provided by ON Semiconductor. “Typical” parameters which may be provided in ON Semiconductor data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts. ON Semiconductor does not convey any license under its patent rights nor the rights of others. ON Semiconductor products are not designed, intended, or authorized for use as a critical component in life support systems or any FDA Class 3 medical devices or medical devices with a same or similar classification in a foreign jurisdiction or any devices intended for implantation in the human body. Should Buyer purchase or use ON Semiconductor products for any such unintended or unauthorized application, Buyer shall indemnify and hold ON Semiconductor and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that ON Semiconductor was negligent regarding the design or manufacture of the part. ON Semiconductor is an Equal Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner. FAN7601B Green Current Mode PWM Controller Features Description          The FAN7601B is a programmable frequency green current mode PWM controller. It is specially designed for the offline adapter applications and the auxiliary power supplies that require high efficiency at light load and no load. The internal high-voltage startup switch and burst mode reduce the power loss. Green Current Mode PWM Control Low Operating Current: Maximum 4 mA Burst Mode Operation Internal High-Voltage Startup Switch Under-Voltage Lockout (UVLO): 12 V / 8 V Latch Protection and Soft-Start Function Over-Voltage Protection: 19 V Operating Frequency up to 300 kHz Maximum Duty Cycle: 95% Applications   FAN7601B includes protections, such as latch protection and over-voltage protection. The latch protection can be used for over-voltage protection, thermal protection, and others. The soft-start prevents the output voltage overshoot at startup. Offline Adapter Applications Auxiliary Power Supplies Related Resources  AN4129 — Green Current Mode PWM Controller FAN7601 Ordering Information Part Number Operating Junction Temperature Top Mark Package Packing Method FAN7601BMX -40C to +150C 7601B 8-SOP Tape & Reel © 2008 Fairchild Semiconductor Corporation FAN7601B • Rev. 1.0.4 www.fairchildsemi.com FAN7601B — Green Current Mode PWM Controller December 2013 VREF 8 VSTR 1 7 VCC Enable 5V Ref Rt/Ct 4   OVP Startup Circuit 19V OSC UVLO VREF   12V/8V 12µA S Q R 1.5V Latch/SS 3 6 OUT OVP   S Q R 1V   Reset Circuit Startup Circuit   Delay Circuit 2.5V 0.97V/0.9V    GND 5 2 CS/FB Latch/SS 1V Figure 1. Internal Block Diagram Pin Configuration VREF VCC Out 8 7 6 GND 5 7601B 1 VSTR 2 CS/FB 3 Latch/SS 4 Rt/Ct Figure 2. Pin Assignments (Top View) Pin Definitions Pin # (8-Pin) Name 1 VSTR 2 CS/FB 3 Latch/SS 4 Rt/Ct Oscillator Timing 5 GND Ground 6 Out Gate Drive Output 7 VCC IC Power Supply 8 VREF Voltage Reference © 2008 Fairchild Semiconductor Corporation FAN7601B • Rev.1.0.4 Description Startup Current Sense and Feedback Latch Protection and Soft-Start www.fairchildsemi.com 2 FAN7601B — Green Current Mode PWM Controller Block Diagram Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be operable above the recommended operating conditions and stressing the parts to these levels is not recommended. In addition, extended exposure to stresses above the recommended operating conditions may affect device reliability. The absolute maximum ratings are stress ratings only. Symbol VCC Parameter Min. Max. Unit 20 V VCS/FB Supply Voltage Input Voltage CS/FB -0.3 20.0 V TSTG Storage Temperature -55 +150 C TJ Recommended Operating Junction Temperature -40 +150 C IO Output Current 250 mA VSTR VSTR Input Voltage 500 V ESD Electrostatic Discharge Capability Human Body Model, JESD22-A114 2000 Charged Device Model, JESD22-C101 1500 V Thermal Impedance Symbol JA Parameter Thermal Resistance, Junction-to-Ambient © 2008 Fairchild Semiconductor Corporation FAN7601B • Rev.1.0.4 Value Unit 180 °C/W www.fairchildsemi.com 3 FAN7601B — Green Current Mode PWM Controller Absolute Maximum Ratings TA=-25C~125C, VCC=14 V, RT=9.5 k, CT=2.2 nF unless otherwise specified. Symbol Parameter Conditions Min. Typ. Max. Unit 4.85 5.00 5.15 V Reference Section VREF Reference Output Voltage IO=1 mA VREF1 Line Regulation VCC=10 V~18 V 10 20 mV VREF2 Load Regulation IO=1 mA ~ 10 mA 20 30 mV 100 110 kHz 1.5 % Oscillator Section fOSC Initial Accuracy 90 STV Voltage Stability VCC=10 V~18 V 1.0 VOSC Amplitude Vpin4 peak-to-peak 1.25 V PWM Section VCS/FB1 CS/FB Threshold Voltage1 DMAX Maximum Duty Cycle DMIN Minimum Duty Cycle TA=25°C 0.9 1.0 1.1 V 92 95 98 % 0 % Burst Mode Section VCS/FB2 CS/FB Threshold Voltage2(1) VCS/FB3 (1) CS/FB Threshold Voltage3 0.77 0.97 1.17 V 0.7 0.9 1.1 V 9 12 15 A 1.2 1.5 1.8 V 2.25 2.50 2.75 V 18 19 20 V Soft-Start Section ISS VSL Soft-Start Current Vpin3=GND (2) Soft-Start Limit Voltage ISS=1 A Protection Section VLATCH VOVP Latch Voltage Over-Voltage Protection UVLO Section VtH Start Threshold Voltage 11 12 13 V VtL Minimum Operating Voltage 7 8 9 V 3 4 mA 2.0 2.5 V 12.0 14.0 V TA=25C, CI=1 nF 45 150 ns TA=25C, CI=1 nF 35 150 ns 1.0 1.5 mA Total Current Section IOP Operating Supply Current Output Section VOL Low Output Voltage TA=25C, IO=100 mA VOH High Output Voltage TA=25C, IO=-100 mA (1) tr Rising Time tf Falling Time(1) 11.5 Startup Section Istr VSTR Startup Current VSTR=30V, TA=25°C 0.5 Notes: 1. These parameters, although guaranteed, are not 100% tested in production. 2. It is recommended to connect a 1 Mresistor between the Latch/SS pin and GND to prevent abnormal operation of the latch protection by noise coupling. © 2008 Fairchild Semiconductor Corporation FAN7601B • Rev.1.0.4 www.fairchildsemi.com 4 FAN7601B — Green Current Mode PWM Controller Electrical Characteristics 3 5.03 2.5 Supply Cur r ent Icc (mA) Vref (V) 5.05 5.01 2 1.5 4.99 4.97 1 0.5 0 4.95 -45 -25 -15 0 25 50 -45 -25 -15 80 100 125 140 Figure 3. Trimmed Reference Voltage Vcc Stop Thr eshold VtL (V) Vcc Star t Thr eshold VtH (V) 50 80 100 125 140 9 12.5 12 11.5 11 10.5 10 -45 -25 -15 0 25 50 8.5 8 7.5 7 -45 -25 -15 80 100 125 140 0 25 50 80 100 125 140 Junction Temperature(℃) Junction Temperature(℃) Figure 5. VCC Start Threshold Voltage Figure 6. VCC Stop Threshold Voltage 110 100 Maximum Duty Cycle Dmax (%) Oscillator Frequency Fosc (KHz) 25 Figure 4. Supply Current 13 105 100 95 90 85 -45 -25 -15 0 25 50 80 98 96 94 92 90 -45 -25 -15 100 125 140 0 25 50 80 100 125 140 Junction Temperature(℃) Junction Temperature(℃) Figure 7. Oscillator Frequency Figure 8. Maximum Duty Cycle 1.35 O scillator L ow Thr eshold Vr L (V) 2.7 O scillator High Thr eshold Vr H (V) 0 Junction Temperature(℃) Junction Temperature(℃) 2.6 2.5 2.4 2.3 -45 -25 -15 0 25 50 80 1.25 1.2 1.15 -45 -25 -15 100 125 140 0 25 50 80 100 125 140 Junction Temperature(℃) Junction Temperature(℃) Figure 9. Oscillator High Threshold Voltage © 2008 Fairchild Semiconductor Corporation FAN7601B • Rev.1.0.4 1.3 Figure 10. Oscillator Low Threshold Voltage www.fairchildsemi.com 5 FAN7601B — Green Current Mode PWM Controller Typical Performance Characteristics 20 Over Voltage Protection Vovp (V) Star t up Cur r ent Istr (mA) 2 1.6 1.2 0.8 0.4 0 -45 -25 -15 0 25 50 80 100 125 140 Junction Temperature(℃) 19.2 18.8 18.4 18 -45 -25 -15 0 25 50 80 100 125 140 Junction Temperature(℃) Figure 11. Startup Current Figure 12. Over-Voltage Protection Level 2.8 14 2.7 Soft Start Current Isoft (uA) Latch Protection Vlatch (V) 19.6 2.6 2.5 2.4 2.3 13 12 11 10 9 2.2 -45 -25 -15 0 25 50 80 100 125 140 Junction Temperature(℃) -45 -25 -15 0 25 50 80 100 125 140 Junction Temperature(℃) Figure 13. Latch Protection Voltage Figure 14. Soft-Start Current 1000 Ct= Frequency[KHz] 10nF 8.2nF 100 4.7nF 3.3nF 2.2nF 1nF 820pF 10 680pF 1 5K 15K 25K Rt[Kohm] 35K 45K Figure 15. Oscillator Frequency Characteristic © 2008 Fairchild Semiconductor Corporation FAN7601B • Rev.1.0.4 www.fairchildsemi.com 6 FAN7601B — Green Current Mode PWM Controller Typical Performance Characteristics (Continued) ON Semiconductor and are trademarks of Semiconductor Components Industries, LLC dba ON Semiconductor or its subsidiaries in the United States and/or other countries. ON Semiconductor owns the rights to a number of patents, trademarks, copyrights, trade secrets, and other intellectual property. A listing of ON Semiconductor’s product/patent coverage may be accessed at www.onsemi.com/site/pdf/Patent−Marking.pdf. ON Semiconductor reserves the right to make changes without further notice to any products herein. ON Semiconductor makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does ON Semiconductor assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages. Buyer is responsible for its products and applications using ON Semiconductor products, including compliance with all laws, regulations and safety requirements or standards, regardless of any support or applications information provided by ON Semiconductor. “Typical” parameters which may be provided in ON Semiconductor data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts. ON Semiconductor does not convey any license under its patent rights nor the rights of others. ON Semiconductor products are not designed, intended, or authorized for use as a critical component in life support systems or any FDA Class 3 medical devices or medical devices with a same or similar classification in a foreign jurisdiction or any devices intended for implantation in the human body. Should Buyer purchase or use ON Semiconductor products for any such unintended or unauthorized application, Buyer shall indemnify and hold ON Semiconductor and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that ON Semiconductor was negligent regarding the design or manufacture of the part. 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