TK75005

TK75005 ADVANCED INFORMATION FEATURES s Can Be Used For Power Factor Correction/Line Harmonics Reduction to Meet IEC1000-3-2 Requirements s Maximum Duty Ratio 89% (typ.) s Low Standby Current for Current-Fed Start-Up s Current-Mode or Voltage-Mode Control s Internal User-Adjustable Slope Compensation s Pulse-by-Pulse Current Limiting LOW-COST FLEXIBLE PWM CONTROLLER APPLICATIONS s s s s Power Factor Correction Converters Off-Line Power Supplies Industrial Power Supplies Off-Line Battery Charger TK75005 DRV VCC EAOUT EAIN FB DESCRIPTION 750 05 GND OVP The TK75005 is an 8-pin PWM controller suitable for both voltage-mode and current-mode control. It also has advanced features not available in controllers with a higher pin count. One such feature is a sawtooth current flowing out of the feedback pin (FB), which provides a slope compensation ramp (in current mode applications) in proportion to the resistance terminating that FB pin. The TK75005 offers the same features as the TK75003 with the addition of the Error Amplifier and the Overvoltage Protection (OVP) functions, and the deletion of the Overcurrent Frequency Reduction feature. This PWM has features similar to the UC3842 (please refer to UC3842 Comparison Section). SOP-8 CT DRV VCC EAOUT EAIN FB 7500 5 GND OVP DIP-8 CT BLOCK DIAGRAM VCC ICT CT ICHG 175 µA OSCILLATOR IDS 1.975 mA fCLK BANDGAP REFERENCE 10.0 V 8.0 V UVLO ORDERING INFORMATION TK75005 Tape/Reel Code Package Code Temp. Range OVP 2.6 V CURRENT...