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LD7552B
1/2/2008
Green-Mode PWM Controller with Integrated Protections
Rev.
01a
General Description
The LD7552B are low cost, low startup current, current mode PWM controllers with green-mode power- saving operation.
The integrated functions include the
Features
z z z z z z z z z z z
High-
Voltage CMOS Process with Excellent ESD protection Very Low Startup Current (20μA) Current Mode Control Non-audible-noise Green Mode Control UVLO (Under
Voltage Lockout) LEB (Leading-Edge Blanking) on CS Pin Programmable Switching Frequency Internal Slope Compensation OVP (Over
Voltage Protection) on Vcc Pin OLP (Over Load Protection) 500mA Driving Capability
leading-edge blanking...