Description
The LD7750A integrates several functions of protections, and EMI-improved solution in a tiny package to minimize the component counts and the circuit space.
The device provides functions of low startup current, green-mode power-saving operation, leading-edge blanking of the current sensing and internal slope compensation. Also, the LD7750A features more protections like OLP (Over Load Protection), OVP (Over Voltage Protection), and OTP (Over Temperature Protection) to prevent the circuit being damaged under abnormal conditions. The LD7750A features built-in auto-recovery function for OVP on Vcc pin and OLP.
Furthermore, the LD7750A features frequency swapping to depress radiation noise, providing an excellent solution for EMI filter design.
Features
High-Voltage (500V) Startup Circuit
Current Mode Control
Green Mode Control
UVLO (Under Voltage Lockout)
LEB (Leading-Edge Blanking) on CS Pin
Internal Frequency swapping
Internal Slope Compensation
Internal Over Current Protection
OVP (Over Voltage Protection) on Vcc
OLP (Over Load Protection)
External OTP through a NTC
500mA Driving Capability
Applications
Switching AC/DC Adaptor and Battery Charger
Open Frame Switching Power Supply
LCD Monitor/TV Power
Manufacturer:Electronic Components
Datasheet:LD7750AGR_datasheet.pdf
