Green Mode Power Switch for Valley Switching Converter - Low EMI and High Efficiency FSQ0365, FSQ0265, www.onsemi.com FSQ0165, FSQ321 Description A Valley Switching Converter generally shows lower EMI and higher power conversion efficiency than a conventional hardswitched converter with a fixed switching frequency. The FSQseries is an integrated PulseWidth Modulation (PWM) PDIP8 PDIP8 GW controller and SENSEFET specifically designed for valley switching CASE 62605 CASE 709AJ operation with minimal external components. The PWM controller includes an integrated fixedfrequency oscillator, undervoltage MARKING DIAGRAM lockout, LeadingEdge Blanking (LEB), optimized gate driver, internal softstart, temperaturecompensated precise current sources for loop compensation, and selfprotection circuitry. Y&E&Z&2&K Compared with discrete MOSFET and PWM controller solutions, FSQxxxx the FSQseries reduces total cost, component count, size and weight while simultaneously increasing efficiency, productivity, and system reliability. This device provides a basic platform for costeffective designs of valley switching flyback converters. Y = ON Semiconductor Logo &E = Designated Space Features &Z = Assembly Plant Code &2 = 2Digit Date code format Optimized for Valley Switching Converter (VSC) &K = 2Digits Lot Run Traceability Code Low EMI through Variable Frequency Control and Inherent FSQxxxx = Specific Device Code Data Frequency Modulation High Efficiency through Minimum Voltage Switching ORDERING INFORMATION Narrow Frequency Variation Range Over Wide Load and Input See detailed ordering and shipping information on page 2 of Voltage Variation this data sheet. Advanced BurstMode Operation for Low Standby Power Consumption Applications PulsebyPulse Current Limit Protection Functions: Overload Protection (OLP), OverVoltage Power Supplies for DVD Player, Protection (OVP), Abnormal OverCurrent Protection (AOCP), DVD Recorder, SetTop Box Internal Thermal Shutdown (TSD) Adapter UnderVoltage Lockout (UVLO) with Hysteresis Auxiliary Power Supply for PC, LCD TV, Internal Startup Circuit and PDP TV Internal HighVoltage SENSEFET: 650 V Builtin SoftStart: 15 ms Related Application Notes FSQ0365, FSQ0265, FSQ0165, FSQ321 Table 1. ORDERING INFORMATION (1) Maximum Output Table (2) 230 V 15% 85 265 V AC AC Open Open Operating Current R DS(ON) (4) (4) (3) (3) Frame Frame Temperature Limit (Max.) Adapter Adapter Part Number Package Shipping FSQ321 PDIP8 3000 / Tube 40 to +85C 0.6 A 19 8W 12W 7W 10W FSQ321LX PDIP8 GW 1000 / Tape & Reel FSQ0165RN PDIP8 3000 / Tube 40 to +85C 0.9 A 10 10W 15W 9W 13W FSQ0165RLX PDIP8 GW 1000 / Tape & Reel FSQ0265RN PDIP8 3000 / Tube 40 to +85C 1.2 A 6 14W 20W 11W 16W FSQ0265RLX PDIP8 GW 1000 / Tape & Reel FSQ0365RN PDIP8 3000 / Tube 40 to +85C 1.5 A 4.5 17.5W 25W 13W 19W FSQ0365RLX PDIP8 GW 1000 / Tape & Reel For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD8011/D. 1. The junction temperature can limit the maximum output power. 2. 230 V or 100/115 V with voltage doubler. The maximum power with CCM operation. AC AC 3. Typical continuous power in a nonventilated, enclosed adapter measured at 50C ambient temperature. 4. Maximum practical continuous power in an openframe design at 50C ambient temperature. www.onsemi.com 2