L4964HT

Voltage Regulators - DC DC Switching Regulators Overview

The L4964HT is a step-down switching voltage regulator manufactured by STMicroelectronics, designed for high-efficiency power conversion. It delivers a continuous output current of 4 A with an adjustable output voltage range from 5.1 V to 28 V. The device operates within an input voltage window of 9 V to 36 V and supports a switching frequency up to 120 kHz. Key electrical specifications include a maximum static current of 66 mA and a load regulation of 15 mV. It functions reliably across an extended temperature range from -40°C to +150°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated thermal shutdown protection for enhanced operational safety
• Built-in soft start capability to limit inrush current during startup
• Remote inhibit input for precise system power control
• Dedicated reset output pin compatible with microprocessor systems

Voltage Regulators - DC DC Switching Regulators Applications

• Automotive electronic systems requiring robust power management
• Industrial equipment utilizing buck converter topologies
• Embedded applications necessitating high-current DC-DC regulation
• Multi-chip configurations requiring PWM synchronization

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'HT' against the manufacturer's official documentation to confirm package type and tape/reel specifications. Ensure compatibility with through-hole mounting requirements associated with the Multiwatt-15 package. Cross-reference RoHS and REACH compliance status directly with the latest datasheet revision. Confirm availability and lead times through authorized distribution channels as manufacturing status may vary.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a monolithic solution is required for high-current step-down applications without external MOSFETs. The integrated 4 A capability simplifies thermal design compared to discrete solutions. Consider the 120 kHz switching frequency for balancing component size and efficiency. Verify that the input voltage range of 9 V to 36 V aligns with the system power supply constraints.

Voltage Regulators - DC DC Switching Regulators Part Context

The L4964HT belongs to the L4964 series of power switching regulators from STMicroelectronics. This family focuses on providing efficient, high-current DC-DC conversion in a single IC. The part utilizes a 15-lead Multiwatt plastic power package, distinguishing it from surface-mount alternatives. It serves as a complete buck converter solution, integrating the switch, controller, and protection circuits.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Consult the official L4964 datasheet for listed recommended products or direct substitutes. Verify pinout compatibility and electrical parameters before substitution. No alternative part numbers are confirmed in the provided source material.