ST6850

Green-Mode PWM Controller 300mA Driving Capability ST6850 DESCRIPTION The ST6850 is the current mode PWM controller with green-mode power-saving operation which can meet the low standby-power needs for low power SMPS. This greenmode function enables the power supply to easily meet even the strictest power conservation requirements. The small package provides the high efficiency / low cost solution for SMPS power applications. ST6850 is processed by BiCMOS fabrication, that enables reducing the start-up current and the operating current. ST6850 is available by SOT-23-6L / DIP-8P packages. PIN CONFIGURATION SOT-23-6L DIP-8P APPLICATIONS z AC / DC Switching Power Adaptor z Battery Charger z PC 5V Standby Power z Open-Frame Switching Power Supply FEATURE z z z z z z z z z z z High-Voltage BiCMOS Process Very Low Startup Current( <25u ) Under Voltage Lockout( UVLO ) Current Mode Control Current Limiting Programmable Switching Frequency Intermal Slope Compensation Green-Mode Control for Power Saving Non-audible-noise Green Mode Control 300mA Driving Capability OVP (Over Voltage Protection) on Vcc Pin PART MARKING SOT-23-6L DIP-8P YYWW STANSON TECHNOLOGY 120 Bentley Square, Mountain View, Ca 94040 USA TEL: (650) 9389294 FAX: (650) 9389295 Page 1 Green-Mode PWM Controller 300mA Driving Capability ST6850 TYPICAL APPLCTUON CIRCUIT ( High Efficiency SMPS ) ST6850 PIN DESCRIPTION ST6850D8T Pin Symbol 1 OUT 2 VCC 3 NC 4 CS 5 6 7 RT NC COMP Descripton Gate driver output to ...