Power Factor Controllers | MC34262

Power Factor Controller (PFC)

Obsolete

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The MC34262/MC33262 are active power factor correction controllers specifically designed for use as a preconverter in electronic ballast and in off-line power converter applications. These integrated circuits feature an internal startup timer for stand-alone applications, a one quadrant multiplier for near unity power factor, zero current detector to ensure critical conduction operation, transconductance error amplifier, quickstart circuit for enhanced startup, 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 an overvoltage comparator to eliminate runaway output voltage due to load removal, input undervoltage lockout with hysteresis, cycle-by-cycle current limiting, multiplier output clamp that limits maximum peak switch current, an RS latch for single pulse metering, and a drive output high state clamp for MOSFET gate protection. These devices are available in dual-in-line and surface mount plastic packages.

  • Active Power Factor Control

  • Electronic Ballast
  • OffLine Power Converters

  • Overvoltage Comparator Eliminates Runaway Output Voltage
  • Internal Startup Timer
  • One Quadrant Multiplier
  • Zero Current Detector
  • Trimmed 2% Internal Bandgap Reference
  • Totem Pole Output with High State Clamp
  • Undervoltage Lockout with 6.0 V of Hysteresis
  • Low Startup and Operating Current
  • Supersedes Functionality of SG3561 and TDA4817 Simplified Block Diagram

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MC34262DG

Contact Sales

Obsolete

CAD Model

Pb

A

H

P

SOIC-8

751-07

1

260

TUBE

98

N

CCM

Variable

Current Mode

Boost

50

30

500 / 500

Yes

Fixed

No

Yes

Price N/A

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MC34262DR2G

Contact Sales

Obsolete

CAD Model

Pb

A

H

P

SOIC-8

751-07

1

260

REEL

2500

N

CCM

Variable

Current Mode

Boost

50

30

500 / 500

Yes

Fixed

No

Yes

Price N/A

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MC34262PG

Contact Sales

Obsolete

CAD Model

Pb

A

H

P

PDIP-8

626-05

NA

0

TUBE

50

N

CCM

Variable

Current Mode

Boost

50

30

500 / 500

Yes

Fixed

No

Yes

Price N/A

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