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Product Detailed Parameters
- Description：IC REG BUCK ADJ 1.5A 16SO W
- Series：-
- Mfr：STMicroelectronics
- Package：Tube
- Function：Step-Down
- Output Configuration：Positive
- Topology：Buck
- Output Type：Adjustable
- Number of Outputs：1
- Voltage - Input (Min)：8V
- Voltage - Input (Max)：55V
- Voltage - Output (Min/Fixed)：3.3V
- Voltage - Output (Max)：50V
- Current - Output：1.5A
- Frequency - Switching：100kHz ~ 300kHz
- Synchronous Rectifier：No
- Operating Temperature：-40°C ~ 150°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：16-SOIC (0.295", 7.50mm Width)
- Supplier Device Package：16-SO W
- Grade：-
- Qualification：-
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Overview
The E-L4971D is a step-down monolithic power switching regulator manufactured by STMicroelectronics. It delivers an output current of 1.5 A with an adjustable output voltage range between 3.3 V and 50 V, selected via an external divider. The device operates within an input voltage range of 8 V to 55 V. Key electrical parameters include a fixed switching frequency of 300 kHz and a maximum operating temperature of +150 °C. The component utilizes a SOIC-16 surface-mount package and supports shutdown functionality.
Feature Summary
- Monolithic buck topology for efficient DC-DC conversion
- Adjustable output voltage selection using external resistors
- High thermal stability suitable for demanding environments
Applications
- Industrial control systems requiring robust power regulation
- Automotive electronics applications
- General-purpose step-down power supply designs
Procurement Notes
Verify the specific suffix against official STMicroelectronics documentation to confirm exact package type and tape/reel specifications. Ensure compatibility with required input voltage ranges and thermal management strategies for the target application environment before finalizing procurement orders.
Selection Notes
Select this component when a high-current buck converter with wide input voltage tolerance is required. Consider the SOIC-16 footprint constraints and the need for external feedback network components to set the desired output voltage level within the specified operational range.
Part Context
This part belongs to the L4971 series of switching regulators from STMicroelectronics. It is designed as a cost-effective solution for medium-power applications, offering integrated protection features and high efficiency compared to linear regulators in high-step-down ratio scenarios.
Replacement Considerations
Consult official cross-reference lists for direct substitutes. Verify pinout compatibility and thermal performance characteristics when evaluating alternative manufacturers' parts for equivalent circuit requirements.
