Multi-Mode PWM Flyback Controller with integrated 650V N-Channel MOSFET
LD9532 contains a multi-mode PWM controller with integrated 650V MOSFET.
In light load condition, the IC works in quasi-resonant (QR) and in heavy load condition in continue conduction mode (CCM).
Moreover the QR controller not only gains the system performance, but also brings the worse EMI capability, while the frequency
swapping function of LD9532 can reduce the EMI emission of SMPS and helps power circuit designers to simply deal with EMI filter
and save several components and development time.
LD9532 includes the comprehensive protection function, such as over load protection (OLP), over voltage protection (OVP),
output short circuit protection (OSCP) and internal over temperature protection (OTP).
The IC is available in THT. LD9532 GM7 in DIP-7 and LD9532 GN in DIP-8 package.
FEATURES
▲ Secondary-side feedback control with quasi-resonant + CCM operation
▲ Built-in 650V Power MOSFET
▲ Low startup current (< 1mA)
▲ Ultra-low operating current at light load
▲ Current mode control with cycle-by-cycle current limit
▲ Green mode control
▲ UVLO (under voltage lock out)
▲ LEB (leading edge blanking) on CS pin
▲ VCC OVP (over voltage protection)
▲ Adj. OVP (over voltage protection) on FB pin
▲ Adj. UVP (under voltage protection) on FB pin
▲ OLP (over load protection)
▲ Internal OTP (over temperature protection)
APPLICATIONS
▲ Switching AC/DC adaptor
▲ Open frame switching power supply
Datasheet 
