Power Factor Controllers

The MC34261 MC33261 are active Power Factor Controllers specifically designed for use as a preconverter in electronic ballast and in offline power converter applications. These integrated circuits feature an internal startup Timer a one quadrant multiplier for near unity power factor, zero current detector to ensure critical conduction operation, high gain error Amplifier trimmed internal bandgap reference, current sensing Comparator and a totem pole output ideally suited for driving a Power MOSFET Also included are protective features consisting of input undervoltage lockout with hysteresis, cyclebycycle current limiting, and a latch for single pulse metering. These devices are available in dualinline and surface mount plastic packages. By Freescale Semiconductor, Inc
MC34261 's PackagesMC34261 's pdf datasheet
MC34261D SO
MC34261P DIP
MC33261D SO
MC33261P DIP

MC34261 Pinout, Pinouts
MC34261 pinout,Pin out
This is one package pinout of MC34261,If you need more pinouts please download MC34261's pdf datasheet.

MC34261 Application circuits
MC34261 circuits
This is one application circuit of MC34261,If you need more circuits,please download MC34261's pdf datasheet.

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