Overview
The MC33262D, produced by onsemi, is an active power factor correction (PFC) controller designed for use as a preconverter in electronic ballast and off-line power converter applications. This integrated circuit is part of the MC33262 series and features an internal startup timer, a one quadrant multiplier for near unity power factor, and a zero current detector to ensure critical conduction operation. It also includes a transconductance error amplifier, a quickstart circuit for enhanced startup, and a trimmed internal bandgap reference. The device is available in dual-in-line and surface mount plastic packages, including the SOIC-8 package for the MC33262D variant.
Key Specifications
| Parameter | Value |
|---|---|
| Package Type | SOIC-8 |
| Operating Temperature Range | −40°C to +105°C |
| Internal Bandgap Reference Accuracy | Trimmed 2% Internal Bandgap Reference |
| Undervoltage Lockout | 6.0 V with hysteresis |
| Startup and Operating Current | Low startup and operating current |
| Output Type | Totem Pole Output with High State Clamp |
| Multiplier Type | One Quadrant Multiplier |
| Zero Current Detection | Zero Current Detector |
| Overvoltage Protection | Overvoltage Comparator to eliminate runaway output voltage |
Key Features
- Internal startup timer for stand-alone applications
- One quadrant multiplier for near unity power factor
- Zero current detector to ensure critical conduction operation
- Transconductance error amplifier with high output impedance
- Quickstart circuit for enhanced startup
- Trimmed 2% internal bandgap reference
- Totem pole output with high state clamp for MOSFET gate protection
- Undervoltage lockout with 6.0 V of hysteresis
- Low startup and operating current
- Overvoltage comparator to eliminate runaway output voltage
- Cycle-by-cycle current limiting and multiplier output clamp
- Pb-free packages available
Applications
- Electronic ballast
- Off-line power converters
- Active power factor correction preconverters
Q & A
- What is the primary function of the MC33262D?
The MC33262D is an active power factor correction controller designed for use in electronic ballast and off-line power converter applications. - What type of multiplier does the MC33262D use?
The MC33262D uses a one quadrant multiplier for achieving near unity power factor. - What is the purpose of the zero current detector in the MC33262D?
The zero current detector ensures critical conduction operation. - What type of output does the MC33262D have?
The MC33262D has a totem pole output with a high state clamp. - What is the operating temperature range of the MC33262D?
The operating temperature range is −40°C to +105°C. - Does the MC33262D have overvoltage protection?
Yes, it includes an overvoltage comparator to eliminate runaway output voltage. - What is the accuracy of the internal bandgap reference in the MC33262D?
The internal bandgap reference is trimmed to 2% accuracy. - What type of packages are available for the MC33262D?
The device is available in dual-in-line and surface mount plastic packages, including SOIC-8. - Does the MC33262D support Pb-free packaging?
Yes, Pb-free packages are available. - What is the purpose of the undervoltage lockout in the MC33262D?
The undervoltage lockout with 6.0 V of hysteresis prevents the device from operating below a safe voltage threshold.
