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MC34262P Datasheet(PDF) 1 Page - ON Semiconductor |
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MC34262P Datasheet(HTML) 1 Page - ON Semiconductor |
1 / 16 page MC34262 MC33262 SEMICONDUCTOR TECHNICAL DATA POWER FACTOR CONTROLLERS PIN CONNECTIONS Order this document by MC34262/D D SUFFIX PLASTIC PACKAGE CASE 751 (SO–8) 8 1 8 1 P SUFFIX PLASTIC PACKAGE CASE 626 Voltage Feedback Input 1 2 3 4 8 7 6 5 (Top View) Compensation Multiplier Input Current Sense Input VCC Drive Output Gnd Zero Current Detect Input Device Operating Temperature Range Package ORDERING INFORMATION MC34262D MC34262P TA = 0° to +85°C SO–8 Plastic DIP MC33262D MC33262P SO–8 Plastic DIP TA = – 40° to +105°C 1 MOTOROLA ANALOG IC DEVICE DATA Power Factor Controllers The MC34262/MC33262 are active power factor 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. • 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 Voltage Feedback Input Multiplier, Latch, PWM, Timer, & Logic Error Amp Multiplier Undervoltage Lockout 2.5V Reference Zero Current Detector 5 8 6 7 4 3 2 1 Drive Output Gnd Zero Current Detect Input Multiplier Input Compensation VCC Current Sense Input Overvoltage Comparator + 1.08 Vref + Vref Quickstart © Motorola, Inc. 1996 Rev 1 |
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