NON-ISOLATED LED LIGHTING DRIVER IC WITH BUILT-IN HIGH-VOLTAGE MOSFET,HIGH PFC AND HIGH CONSTANT CURRENT ACCURACY

SDH697XS is designed for non-isolated LED driving with floation buck structure,built-in HV MOSFET and depletion mode MOSFET are available.With this structure,inductor current is sensed and closed-loop is formed with the internal error amplifier for high constant current accuracy and high input/output regulation rate.Also,high PF in full range for decreasing switching loss and improving the conversion efficiency.

Furthermore,SDH697XS has a built-in VCC regulator and a high-voltage power supply controller,which is able to supply power to VCC capacitor iin a certain VCC range without any peripheral power supply or HV startup circuit,saving the system cost and volume.

SDH697XS integrated various protections,such as output open circuit protection ,output short circuit protection,cycle-by-cycle over current protection,and over temperature protection. 

The start-up current and operating current are low and highlight LED can be driven with high efficiency in full range(85VAC-265VAC).

FEATURES

• Proprietary constant control method(Patent)
• Built-in high-voltage power supply
• Built-in VCC regulator
• Built-in HV power MOSFET and depletion for LED(<3%)
• Constant current with high accuracy for LED 
• PF>0.9 in full voltage range
• Boundary-conduction mode
• LED short circuit protection
• LED open circuit protection
• VCC under voltage protection
• Over temperature protection
• Over current protection
• Internal current dropping in high temperature condition

Application 

   Bulb Lamp

   T5/T8 LED Lamp

   Various LED lighting

For more information,pls call at +86-15015274260 or email to :lynn@ctc-semi.com