LD7536 Datasheet | Leadtrend

LD7536 12/15/2011 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 ponents 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 pensation. 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 ponent cost and developing time. Features z High-Voltage CMOS Process with Excellent ESD protection z Very Low Startup Current (<20μA) z Current Mode Control z Green Mode Control z UVLO (Under Voltage Lockout) z LEB (Leading-Edge Blanking) on CS Pin z Internal Frequency Swapping z Internal Slope pensation z OVP (Over Voltage Protection) on Vcc Pin z OTP (Over Temperature Protection) through a NTC z OLP (Over Load Protection) z 300mA Driving Capability Applications z Switching AC/DC Adaptor and Battery Charger z Open Frame Switching Power Supply Typical Application Leadtrend Technology Corporation LD7536-DS-02a December 2011 1 .leadtrend..tw Pin Configuration DIP-8 (TOP VIEW) 8765 TOP MARK YYWWPP 1 23 4 GN D P NC OTP LD7536 SOT-26 (TOP VIEW) OUT VCC CS 65 36 YWP pp 12 4 3 GND P OTP OUT VCC NC CS Ordering Information...