Overview
The MC33364D2G is a critical conduction mode SMPS (Switch-Mode Power Supply) controller produced by onsemi. This controller is part of the MC33364 series, which is optimized for high-density power supplies requiring minimal board area, reduced component count, and low power dissipation. The MC33364D2G is particularly suited for applications where space and efficiency are critical.
The device features an on-board reference, UVLO (Under-Voltage Lockout) function, a watchdog timer to initiate output switching, a zero current detector for critical conduction operation, a current sensing comparator, leading edge blanking for noise immunity, and a CMOS driver with cycle-by-cycle current limiting. It also includes lossless off-line startup and over-temperature protection, enhancing its reliability and efficiency.
Key Specifications
| Parameter | Value |
|---|---|
| Topology | Flyback |
| Control Mode | Current Mode |
| Switching Frequency | Up to 150 kHz |
| UVLO (Under-Voltage Lockout) | Yes |
| Short Circuit Protection | No |
| Latch | No |
| Soft Start | No |
| VCC Max (V) | 16 V |
| Drive Capacity (mA) | 220 / 600 mA |
| Package Type | SOIC-8 |
| Operating Temperature Range | -25°C to +125°C |
| Minimum Operating Temperature | -25°C |
| Output Current | Up to 600 mA |
Key Features
- Lossless Off-Line Startup: Saves approximately 0.7 W of power compared to resistor bootstrapped circuits.
- Leading Edge Blanking: Enhances noise immunity.
- Watchdog Timer: Initiates output switching.
- Zero Current Detector: Ensures critical conduction operation.
- Current Sensing Comparator: For precise current control.
- CMOS Driver: With cycle-by-cycle current limiting.
- Over Temperature Protection: Ensures device reliability.
- Shutdown Capability: Allows for system shutdown.
- Optional/Adjustable Frequency Clamp: To limit EMI (Electromagnetic Interference).
Applications
The MC33364D2G is suitable for a variety of high-density power supply applications, including:
- Consumer electronics such as TVs, computers, and gaming consoles.
- Industrial power supplies requiring compact and efficient designs.
- Telecommunication equipment where space and power efficiency are critical.
- Medical devices that need reliable and compact power solutions.
Q & A
- What is the topology of the MC33364D2G?
The MC33364D2G operates in a flyback topology.
- What is the control mode of the MC33364D2G?
The control mode is current mode.
- What is the maximum switching frequency of the MC33364D2G?
The maximum switching frequency is up to 150 kHz.
- Does the MC33364D2G have UVLO (Under-Voltage Lockout) function?
Yes, it does have a UVLO function.
- What is the operating temperature range of the MC33364D2G?
The operating temperature range is -25°C to +125°C.
- What is the maximum output current of the MC33364D2G?
The maximum output current is up to 600 mA.
- Does the MC33364D2G have over temperature protection?
Yes, it has over temperature protection.
- What is the package type of the MC33364D2G?
The package type is SOIC-8.
- Does the MC33364D2G support adjustable frequency clamp?
No, the MC33364D2G does not have an internal frequency clamp, but other variants in the series do.
- What are some typical applications of the MC33364D2G?
Typical applications include consumer electronics, industrial power supplies, telecommunication equipment, and medical devices.
