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LD7536GL Datasheet(PDF) 1 Page - Leadtrend Technology |
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LD7536GL Datasheet(HTML) 1 Page - Leadtrend Technology |
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1 / 16 page  LD7536 12/15/2011 1 Leadtrend Technology Corporation www.leadtrend.com.tw LD7536-DS-02a December 2011 Green-Mode PWM Controller with Frequency Swapping and Integrated Protections Rev. 02a General Description The LD7536 is built-in with several functions, protection and EMI-improved solution in a tiny package. It takes less components counts or circuit space, especially ideal for those total solutions of low cost. The implemented functions include low startup current, green-mode power-saving operation, leading-edge blanking of the current sensing and internal slope compensation. It also features more protections like OLP (Over Load Protection) and OVP (Over Voltage Protection) to prevent circuit damage occurred under abnormal conditions. Furthermore, the Frequency Swapping function is to reduce the noise level and thus helps the power circuit designers to easily deal with the EMI filter design by spending minimum amount of component cost and developing time. Features High-Voltage CMOS Process with Excellent ESD protection Very Low Startup Current (<20 μA) Current Mode Control Green Mode Control UVLO (Under Voltage Lockout) LEB (Leading-Edge Blanking) on CS Pin Internal Frequency Swapping Internal Slope Compensation OVP (Over Voltage Protection) on Vcc Pin OTP (Over Temperature Protection) through a NTC OLP (Over Load Protection) 300mA Driving Capability Applications Switching AC/DC Adaptor and Battery Charger Open Frame Switching Power Supply Typical Application |
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