Allicdata Part #: | 497-1413-5-ND |
Manufacturer Part#: |
L4973V3.3 |
Price: | $ 0.00 |
Product Category: | Integrated Circuits (ICs) |
Manufacturer: | STMicroelectronics |
Short Description: | IC REG BUCK ADJ/3.3V 3.5A 18DIP |
More Detail: | Buck Switching Regulator IC Positive Adjustable (F... |
DataSheet: | L4973V3.3 Datasheet/PDF |
Quantity: | 1000 |
Voltage - Output (Min/Fixed): | 0.5V (3.3V) |
Base Part Number: | L4973 |
Supplier Device Package: | 18-DIP |
Package / Case: | 18-DIP (0.300", 7.62mm) |
Mounting Type: | Through Hole |
Operating Temperature: | -40°C ~ 150°C (TJ) |
Synchronous Rectifier: | No |
Frequency - Switching: | 100kHz ~ 300kHz |
Current - Output: | 3.5A |
Voltage - Output (Max): | 50V |
Series: | -- |
Voltage - Input (Max): | 55V |
Voltage - Input (Min): | 8V |
Number of Outputs: | 1 |
Output Type: | Adjustable (Fixed) |
Topology: | Buck |
Output Configuration: | Positive |
Function: | Step-Down |
Part Status: | Active |
Packaging: | Tube |
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The L4973V3.3 is a very popular DC-DC switching regulator from STMicroelectronics. It is a three-phase step-down converter, capable of delivering up to 3A at 3.3V with a 5V input. It also has low EMI and built-in protection features.
The L4973V3.3 is a highly efficient and compact, non-isolated switch regulator. It is designed to provide a regulated, low-noise output voltage from a wide input voltage range. It also features full protection features, including overtemperature and overcurrent protection.
The L4973V3.3 is suitable for a wide range of applications including LED lighting, computers and peripheral equipment, optical modules, and other telecommunications and navigation systems. It is also well suited for use in power supplies, PoE (power over Ethernet) applications, and mobile device chargers.
The L4973V3.3 is designed to be used in three-phase, fulcrum point control applications, a type of buck converter topology. In this topology, the converter’s output voltage is regulated by adjusting the duty cycle of the input voltage waveform, applied to a particular phase. The phases are switched so that the average input voltage waveform produces the desired output voltage. The switching frequency is usually in the range of 200 kHz to 500 kHz.
The L4973V3.3 has a number of additional features that make it well suited for high power applications, such as an adjustable current limit to reduce output power levels and extend conversion times. It also has an adjustable soft-start feature that eliminates output voltage overshoots during startup. Additionally, the device includes protection features including overvoltage protection, short circuit protection, and thermal protection.
The L4973V3.3 also features Pulse Frequency Modulation (PFM) mode for reduced noise operation and low current operation at light loads. The PFM mode reduces noise by switching only when required. At light loads, the device switches at a fixed frequency, reducing the overall switch frequency compared to PWM mode.
In conclusion, the L4973V3.3 is a three-phase step-down converter, capable of delivering up to 3A at 3.3V with a 5V input. It is suitable for a wide range of applications including LED lighting, computers and peripheral equipment, optical modules, and other telecommunications and navigation systems. It provides excellent efficiency and fits well in a wide variety of applications. It also features full protection features, adjustable current limit, adjustable soft-start, and PFM mode for reduced noise. As such, the L4973V3.3 is an ideal choice for many applications that require a reliable and powerful DC-DC switching regulator.
The specific data is subject to PDF, and the above content is for reference
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