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| ST8835 Green-Mode PWM Controller DESCRIPTION The ST8835 is low cost, startup current, current mode PWM controller with green-mode power-saving operation. The integrated functions include the leading-edge blanking of the current sensing, internal slope compensation. It would provide the users a superior AC/DC power application of higher efficiency, low external compotation of higher efficiency, low external component counts, and lower cost solution for applications. The ST8835 features more protections or functions for the following characteristics Add OLP (Over Load Protection) function to provide better protection performance for fault conditions the OVP ( Over Voltage Protection ) mechanism form the cycle-by-cycle mode to the hiccup mode. ST6853 is available by SOT-23-6L / DIP-8P packages. PIN CONFIGURATION SOT-23-6L / DIP-8P APPLICATUONS * AC/DC Switching Power Adaptor * Battery Charger * PC 5V Standby Power * Open-Farme Switching Power Supply FATURES * High-Voltage BiCNOS Process * Very Low Startup Current (<20uA) * Under Voltage Lockout (UVLO) * Current Mode Control * Non-audible-noise Green Mode Control Current Limiting * LEB (Leading-Edge Blanking) on CS Pin * OLP (Over Load Protection) * OVP (Over Voltage Protection) on Vcc Pin * Leading-Edge Blanking * Programmable Switching Frequency * Internal Slope Compensation * Green-Mode Control for Power Saving * 300mA Driving Capability PART MARKING SOT-23-6L / DIP-8P Y: Year Code W: Process Code 120 Bentley Square, Mountain View, Ca 94040 USA www.stansontech.com ST8835 2008. Rev. 1 ST8835 Green-Mode PWM Controller TYPICAL APPLCATION CIRCURIT ST8835 TYPICAL APPLCATUON CIRCURIT (High Efficiency SMPA+Sychronous Rectifier) ST8835 120 Bentley Square, Mountain View, Ca 94040 USA www.stansontech.com ST8835 2008. Rev. 1 ST8835 Green-Mode PWM Controller ST8835T8DG ST8835S26RG 120 Bentley Square, Mountain View, Ca 94040 USA www.stansontech.com ST8835 2008. Rev. 1 ST8835 Green-Mode PWM Controller BLOCK DIIAGRAM BLOCK DIA GRAM BLOCK D AGRAM 120 Bentley Square, Mountain View, Ca 94040 USA www.stansontech.com ST8835 2008. Rev. 1 ST8835 Green-Mode PWM Controller ABSOULTE MAXIMUM RATINGS (TA=25 unless otherwise specifiec) The following ratings designate persistent limits beyond which damage to the devic may occur. 120 Bentley Square, Mountain View, Ca 94040 USA www.stansontech.com ST8835 2008. Rev. 1 ST8835 Green-Mode PWM Controller ELECTRICAL CHARACTERISTICS (TA=25 Vcc=15V, unless otherwise specifiec) 120 Bentley Square, Mountain View, Ca 94040 USA www.stansontech.com ST8835 2008. Rev. 1 ST8835 Green-Mode PWM Controller PERFPRMANCE CHARACTERISTICS (TA=25 unless otherwise specifiec) 120 Bentley Square, Mountain View, Ca 94040 USA www.stansontech.com ST8835 2008. Rev. 1 ST8835 Green-Mode PWM Controller PERFPRMANCE CHARACTERISTICS (TA=25 unless otherwise specifiec) 120 Bentley Square, Mountain View, Ca 94040 USA www.stansontech.com ST8835 2008. Rev. 1 ST8835 Green-Mode PWM Controller PERFPRMANCE CHARACTERISTICS (TA=25 unless otherwise specifiec) 120 Bentley Square, Mountain View, Ca 94040 USA www.stansontech.com ST8835 2008. Rev. 1 ST8835 Green-Mode PWM Controller PERFPRMANCE CHARACTERISTICS (TA=25 unless otherwise specifiec) 120 Bentley Square, Mountain View, Ca 94040 USA www.stansontech.com ST8835 2008. Rev. 1 ST8835 Green-Mode PWM Controller PERFPRMANCE CHARACTERISTICS (TA=25 unless otherwise specifiec) 120 Bentley Square, Mountain View, Ca 94040 USA www.stansontech.com ST8835 2008. Rev. 1 ST8835 Green-Mode PWM Controller DIP-8 PACKAGE OUTLING 120 Bentley Square, Mountain View, Ca 94040 USA www.stansontech.com ST8835 2008. Rev. 1 ST8835 Green-Mode PWM Controller SOT23-6L PACKAGE OUTLING 120 Bentley Square, Mountain View, Ca 94040 USA www.stansontech.com ST8835 2008. Rev. 1 |
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