LM2576TV-012

Voltage Regulators - DC DC Switching Regulators Overview

The LM2576TV-012 is a monolithic integrated circuit from the LM2576 series, functioning as a step-down switching regulator. Manufactured by onsemi, this device provides a fixed 12 V output with a maximum current capacity of 3 A. It operates within an input voltage range of 7 V to 40 V and utilizes a fixed 52 kHz internal oscillator for pulse-width modulation control. The component is housed in a five-pin TO-220 package designed for through-hole mounting. It supports an operating junction temperature range from -40 °C to +125 °C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates a fixed-frequency 52 kHz oscillator and a 1.23 V reference voltage source to simplify external component requirements.
• Includes built-in thermal shutdown and cycle-by-cycle current limiting protection mechanisms for fault conditions.
• Features an external ON/OFF control pin compatible with TTL logic levels to enable low-power standby modes.

Voltage Regulators - DC DC Switching Regulators Applications

• Efficient step-down DC/DC power supply conversion
• Pre-regulator stage for linear voltage regulators
• Positive-to-negative converter topologies

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix '012' confirms the fixed 12 V output variant rather than adjustable or other voltage versions. Confirm the 'TV' designation corresponds to the TO-220-5 through-hole package. Check RoHS compliance status as some listings indicate non-compliance. Validate that the obsolete lifecycle status does not impact long-term availability requirements.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 12 V output at up to 3 A is required from an input voltage between 7 V and 40 V. Ensure the application can accommodate the 52 kHz switching frequency and requires through-hole mounting. Consider thermal management needs due to the TO-220 package's heat dissipation characteristics under full load conditions.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2576 family of 3 A step-down switching regulators. It serves as a direct replacement for older three-terminal linear regulators in many applications. The series includes variants for different fixed outputs (3.3 V, 5 V, 15 V) and an adjustable version. The LM2576HV variant exists for higher input voltages up to 60 V.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

The UC2576T-12 is a documented substitute offering similar functionality. Verify compatibility regarding pinout alignment and thermal performance before substitution.