LN3C63

LN3C63 High Performance Current Mode PWM Controller Cycle Turning+ POWER FROM LIEMIC For, Adaptor & Charger Offline Power Supply Open Frame Power DVD&DVB Player Auxiliary Power for PC etc...….. © 2008 LIEMIC Semiconductor Co.,Ltd. LN3C63AD REV: 1.0.0 Free Datasheet http://www.datasheet4u.net/ POWER FROM LIEMIC GENERAL DESCRIPTION LN3C63 is a highly integrated current mode PWM control IC optimized for high performance, low standby power and cost effective offline flyback converter applications in less than 35W range. PWM switching frequency at normal operation is High Performance Current Mode PWM Controller Cycle Turning+ technique together with soft switching control at the totem pole gate drive output. Tone energy at below 20kHz is minimized in the design and audio noise is eliminated during operation. LN3C63 is offered in SOT23-6, SOP8 and DIP8 packages. externally programmable and trimmed to tight range. At no load or light load condition, the IC operates in extended ‘burst mode’ to minimize switching loss. Lower standby power and higher conversion efficiency is thus achieved. VDD low startup FEATURES u u u u u u u u u u u LIEMIC Proprietary Cycle Turning Technology for Improved EMI Performance. Extended Burst Mode Control For Improved Efficiency and Minimum Standby Power Design Audio Noise Free Operation External Frequency Internal Synchronized Slope Compensation Low VDD Startup Current and Low Operating Current Leading Edge Blanking on Current Sense Input VDD Over...