High Voltage GreenLine Power Factor Controller
MC33368
High Voltage GreenLinet Power Factor Controller
The MC33368 is an active power factor controller that functions ...
Description
MC33368
High Voltage GreenLinet Power Factor Controller
The MC33368 is an active power factor controller that functions as a boost preconverter in off−line power supply applications. MC33368 is optimized for low power, high density power supplies requiring a minimum board area, reduced component count and low power dissipation. The narrow body SOIC package provides a small footprint. Integration of the high voltage startup saves approximately 0.7 W of power compared to resistor bootstrapped circuits.
The MC33368 features a watchdog timer to initiate output switching, a one quadrant multiplier to force the line current to follow the instantaneous line voltage a zero current detector to ensure critical conduction operation, a transconductance error amplifier, a current sensing comparator, a 5.0 V reference, an undervoltage lockout (UVLO) circuit which monitors the VCC supply voltage and a CMOS driver for driving MOSFETs. The MC33368 also includes a programmable output switching frequency clamp. Protection features include an output overvoltage comparator to minimize overshoot, a restart delay timer and cycle−by−cycle current limiting.
Features
Lossless Off−Line Startup Output Overvoltage Comparator Leading Edge Blanking (LEB) for Noise Immunity Watchdog Timer to Initiate Switching Restart Delay Timer This is a Pb−Free Device*
16 1
http://onsemi.com
MARKING DIAGRAM
SO−16 D SUFFIX CASE 751K
16
MC33368D AWLYWWG
1
A = Assembly Location WL = Wafer Lot YY, Y = Year ...
Similar Datasheet