Green-Mode PWM Controller with Programmable OLP Delay Time
and Integrated Protections
The LD7530M/LD7530N are specifically designed for the
low total system cost by integrating many functions and
protections in a tiny SOT-26 package which usually need a
lot of extra components or circuits on the general designs.
Furthermore, the programmable OLP delay time function is
to reduce the circuit complexity and thus helps the power
circuit designers to easily deal with the peak load design by
using minimum component cost and developing time.
And to satisfy different designs, 2 versions of OVP levels are
implemented as ---
z LD7530M --- 28.0V ± 2.0V.
z LD7530N --- 21.0V ± 2.0V.
z High-Voltage CMOS Process with Excellent ESD
z Very Low Startup Current (<30μA)
z Current Mode Control
z Non-audible-noise Green Mode Control
z UVLO (Under Voltage Lockout)
z LEB (Leading-Edge Blanking) on CS Pin
z Internal Slope Compensation
z OVP (Over Voltage Protection) on Vcc Pin
z OLP (Over Load Protection) and programmable timer
z 300mA Driving Capability
z Switching AC/DC Adaptor and Battery Charger
z Open Frame Switching Power Supply
Leadtrend Technology Corporation
LD7530M&LD7530N-DS-01 June 2008