MICROCHIP LM2576-5.0WT Buck (Step Down) Switching Regulator, Fixed, 4 V to 40 V in, 5 V/3 A out, 52 kHz, TO-220-5

The LM2576-5.0WT is a Monolithic Integrated Circuit provide all the active functions for a step-down (buck) switching regulator. Fixed versions are available with a 3.3, 5 or 12V fixed output. Adjustable versions have an output voltage range from 1.23 to 37V. Both versions are capable of driving a 3A load with excellent line and load regulation. These regulators are simple to use because they require a minimum number of external components and include internal frequency compensation and a fixed-frequency oscillator. This series offers a high efficiency replacement for popular three-terminal adjustable linear regulators. It substantially reduces the size of the heat sink and in many cases no heat sink is required. A standard series of inductors available from several different manufacturers are ideal for use with this series. This feature greatly simplifies the design of switch-mode power supplies.

• Voltage over specified line and load conditions
• ±3% Maximum output voltage fixed version
• 1.23V to 37V Wide output voltage range
• Requires only 4 external components
• 52kHz Fixed frequency internal oscillator
• <lt/>200µA Low power standby mode IQ typically
• 80% Efficiency (adjustable version typically <gt/> 80%)
• Uses readily available standard inductors
• Thermal shutdown and current limit protection
• 100% Electrical thermal limit burn-in

Applications

Signal Processing

Warnings

ESD sensitive device, take proper precaution while handling the device. Market demand for this product has caused an extension in leadtimes. Delivery dates may fluctuate. Product exempt from discounts.