L4960

Voltage Regulators - DC DC Switching Regulators Overview

The L4960 is a monolithic step-down switching regulator from STMicroelectronics, designed to deliver up to 2.5A output current with an adjustable voltage range of 5.1V to 40V. It operates within an input voltage window of 9V to 46V and supports switching frequencies up to 150kHz. The device features a precise ±2% on-chip reference, achieving efficiencies up to 90%. Key protection mechanisms include internal current limiting, thermal shutdown, and soft start functionality. It is housed in a through-hole HEPTAWATT V package (10.4 x 4.8 x 9.2mm) and functions reliably across an operating temperature range of -40°C to +150°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated current limiting and thermal shutdown for robust fault protection
• Soft start capability minimizes inrush current during power-up sequences
• High switching frequency operation enables reduction in external filter component size

Voltage Regulators - DC DC Switching Regulators Applications

• General-purpose DC-DC step-down power conversion
• Industrial control system power supplies
• Automotive electronics requiring high efficiency

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix code against the official datasheet to confirm pinout compatibility and exact electrical tolerances. Ensure the procurement channel provides genuine STMicroelectronics components to guarantee adherence to the specified thermal and electrical ratings. Cross-reference the package marking with the HEPTAWATT V physical dimensions to prevent installation errors in through-hole designs.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a single-output buck converter is required with an input voltage up to 46V and output currents reaching 2.5A. The HEPTAWATT V package is suitable for applications where through-hole mounting is preferred or necessary for mechanical stability. Consider the 150kHz switching frequency trade-off between component size and electromagnetic interference when designing the external LC filter network.

Voltage Regulators - DC DC Switching Regulators Part Context

The L4960 belongs to STMicroelectronics' family of power switching regulators, specifically engineered for efficient voltage regulation in industrial and automotive environments. It serves as a discrete solution for designers needing adjustable output voltages without the complexity of multi-rail systems. The device complements other ST power management solutions by providing a standalone, high-current buck regulator option.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should consult official STMicroelectronics resources for qualified alternatives that match the HEPTAWATT V package and 2.5A current rating.

Voltage Regulators - DC DC Switching Regulators FAQ

What is the maximum switching frequency supported by the L4960?

The L4960 supports switching frequencies up to 150kHz.

Does the L4960 include protection against short circuits?

Yes, the device includes internal current limiting and thermal shutdown to protect against accidental short-circuits and overheating.