Motorola MC34261
The MC34261/MC33261 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, 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. These devices are available in dual–in–line and surface mount plastic packages.
| Part No. |
MC34261 |
| Datasheet |
MC34261
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| Manufacturer |
 Motorola |
| Description |
POWER FACTOR CONTROLLERS |
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MAXIMUM RATINGS
Rating Total Power Supply and Zener Current Output Current, Source or Sink (Note 1) Current Sense, Multiplier, and Voltage Feedback Inputs Zero Current Detect Input High State Forward Current Low State Reverse Current Power Dissipation and Thermal Characteristics P Suffix, Plastic Package Case 626 Maximum Power Dissipation @ TA = 70°C Thermal Resistance, Junction–to–Air D Suffix, Plastic Package Case 626 Maximum Power Dissipation @ TA = 70°C Thermal Resistance, Junction–to–Air Operating Junction Temperature Operating Ambient Temperature (Note 3) MC34261 MC33261 Storage Temperature Symbol (ICC + IZ) IO Vin Iin 50 –10 Value 30 500 –1.0 to 10 Unit mA mA V mA PD RθJA PD RθJA TJ TA 800 100 450 178 +150 0 to +70 –40 to +85 mW °C/W mW °C/W °C °C Tstg –55 to +150 °C ELECTRICAL CHARACTERISTICS
(VCC = 12 V, for typical values TA = 25°C, for min/max values TA is the operating ambient temperature range that applies [Note 3], unless otherwise noted.) Characteristic ERROR AMPLIFIER V...
