onsemi NCL30082
The NCL30082 is a PWM current mode controller targeting isolated flyback and non−isolated constant current topologies. The controller operates in a quasi−resonant mode to provide high efficiency. This removes the need for secondary side feedback circuitry, biasing and an optocoupler.FEATURES
● Quasi−resonant Peak Current−mode Control Operation● Primary Side Sensing (no optocoupler needed)
● Wide VCC Range
● Source 300 mA / Sink 500 mA Totem Pole Driver with 12 V Gate Clamp
● Precise LED Constant Current Regulation ±1% Typical
● Line Feed−forward for Enhanced Regulation Accuracy
● Low LED Current Ripple
● 250 mV ±2% Guaranteed Voltage Reference for Current Regulation
● ~0.9 Power Factor with Valley Fill Input Stage
● Low Start−up Current (13 mA typ.)
● Analog or Digital Dimming
● Thermal Fold−back
● Wide Temperature Range of −40 to +125°C
● Pb−Free, Halide−Free MSL1 Product
● Robust Protection
FEATURES
♦ Over Voltage / LED Open Circuit Protection ♦ Over Temperature Protection ♦ Secondary Diode Short Protection ♦ Output Short Circuit Protection ♦ Shorted Current Sense Pin Fault Detection ♦ Latched and Auto−recoverable Versions ♦ Brown−out ♦ VCC Under Voltage Lockout ♦ Thermal Shutdown● These Devices are Pb−Free and Halogen Free/BFR Free Typical
APPLICATIONS
● Inte...