L4972A / STMicroelectronics - Datenblatt(PDF) Chat AI

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Part No.	L4972A
Manufacturer	STMICROELECTRONICS
Size	339 Kbytes
Pages	23 pages
Description	2A SWITCHINGREGULATOR

Datasheet Summary with AI

1. Core Functionality:

️· Synchronous Buck Converter: The L4972A is designed to efficiently step down DC voltage (buck conversion). The synchronous rectification (using MOSFETs instead of diodes) improves efficiency.
️· Applications: Suitable for applications like distributed power supplies, point-of-load regulation, and general-purpose DC-DC conversion.

2. Key Electrical Characteristics (From Datasheet Tables - Partial List):

️· Input Voltage: Wide range, capable of handling various power sources.
️· Output Voltage: Adjustable, allowing for flexible design.
️· Output Current: Can deliver significant current, up to several amps.
️· Switching Frequency: Adjustable for optimizing efficiency and component size.
️· Efficiency: High efficiency (often >90%) due to synchronous rectification.
️· Shutdown Current: Low quiescent current in shutdown mode, saving power.

3. Features Highlighted:

️· Adjustable Switching Frequency: Allows optimization for size and efficiency.
️· Soft-Start: Limits inrush current during startup.
️· Overcurrent Protection: Protects the IC and load from excessive current.
️· Thermal Shutdown: Prevents damage from overheating.
️· Synchronization Capability: Can be synchronized with other L4972A ICs or other compatible devices.
️· Remote Shutdown: Ability to disable the IC remotely.

4. Detailed Graphs and Performance Data:

️· The datasheet includes a large number of graphs showing performance characteristics under various conditions. This includes:
- Efficiency vs. Output Voltage/Current
- Line and Load Transient Response
- Quiescent Current vs. Duty Cycle/Frequency
- Thermal Resistance characteristics.
- Dropout Voltage

5. Mechanical Data:

️· Detailed outlines and dimensions are provided for both the DIP-16+2+2 and SO-20 packages.

In essence, this datasheet is a complete reference for engineers designing power supplies or DC-DC converters using the STMicroelectronics L4972A. It provides the necessary information to understand the IC's capabilities, design with it effectively, and troubleshoot any potential issues.