CXW CX7501
Quasi-Resonant PSR CC/CV PWM Power Switch
FEATURES
● Low Cost Solution Built-in 800V power BJT● Quasi-Resonant Primary Side Regulation (QR-PSR) Control with High Efficiency
● Multi-Mode PSR Control
● Fast Dynamic Response
● Built-in Dynamic Base Drive
● Audio Noise Free Operation
● ±4% CC and CV Regulation
● Low Standby Power <70mW
● Programmable Cable Drop Compensation (CDC) in CV Mode
● Built-in AC Line & Load CC Compensation
● Build in Protections:
● Short Load Protection (SLP)
● Cycle-by-Cycle Current Limiting
● Leading Edge Blanking (LEB)
● Pin Floating Protection
● VDD OVP & UVP & Clamp
● Over temperature protection(OTP)
● Available with CX7501 Versions in SOP-7 Package
APPLICATIONS
● Battery Chargers for Cellular Phones● AC/DC Power Adapter and LED Lightings
GENERAL DESCRIPTION
CX7501 is a high performance Quasi Resonant (QR) Primary Side Regulation (PSR) PWM power switch with high precision CV/CC control ideal for charger applications. In CV mode, CX7501 adopts Multi Mode QR Control which uses the hybrid of AM (Amplitude Modulation) mode and (Frequency Modulation) FM mode to improve system efficiency and reliability.