L5971D

Voltage Regulators - DC DC Switching Regulators Overview

The L5971D is a step-down monolithic power switching regulator from STMicroelectronics. It delivers an output current of 1.5 A with an adjustable output voltage range between 1.26 V and 20 V, selected via an external divider. The device operates with an input voltage up to 20 V. It utilizes BCD5 technology and features an internal oscillator fixed at a switching frequency of 250 kHz. The component is housed in a 16-pin SOIC package.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Monolithic step-down switching regulator architecture
• Adjustable output voltage selection via external divider
• Internal 250 kHz oscillator for fixed-frequency operation
• BCD5 technology integration

Voltage Regulators - DC DC Switching Regulators Applications

• General-purpose DC-DC conversion
• Battery-powered systems requiring step-down regulation
• Embedded power supply designs

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific package type and pin count against official datasheets, as variations exist within the L597x family. Confirm that the required output voltage range aligns with the 1.26 V to 20 V specification. Ensure compatibility with the 250 kHz switching frequency for your filter design. Check for alternative suffixes if different packaging options are needed.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a 1.5 A output current is sufficient for the load requirements. It is suitable for applications where an adjustable output voltage between 1.26 V and 20 V is necessary. Consider the 250 kHz fixed frequency for EMI management. Verify that the input voltage does not exceed the maximum rating of 20 V.

Voltage Regulators - DC DC Switching Regulators Part Context

The L5971D belongs to the L597x series of switching regulators by STMicroelectronics. This series includes variants like the L5973D, which offers higher current capabilities and wider input voltage ranges. The L5971D specifically targets applications requiring moderate current output with adjustable voltage settings using standard external components.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct substitutes include other L597x series parts such as the L5973D for higher current needs or L5970D for lower current applications. Verify pin compatibility and electrical specifications before substitution.