YONGYUTAI LM2576S-5.0-Y

The LM2576S-xxx-YLM2576 series of regulators are monolithic integrated circuits that provide all the active functio a step-down (buck) switching regulator, capable of driving 3A load with excellent line and load regulation. These devices are available in fixed output voltages of 3.3V,5V,12V,15V,and an adjustable output version. Requiring a minimum number of external components, these regulators are simple to use and include internal frequency compensation and afixed-frequency oscillator. The LM2576S -xxx-Yseries offers a high-efficiency replacement for popular three-terminal linear regulators. It substantially reduces the size of the heatsink, and in some cases no heat sink is required. A standard series of inductors optimized for use with the LM2576S-xxx-Y are available from several different manufacturers. This feature greatly simplifies the design of switch-mode power supplies. Other features include a guaranteed ±4% tolerance on output voltage with inspecified input voltages and output load conditions, and ±10% on the oscillator frequency. External shutdown is included, featuring 50μA (typical) standby current. The output switch includes cycle-by-cycle current limiting, as well as thermal shutdown for full protection under fault conditions.

• Guaranteed 3A output current
• Requires only 4 external components
• 52 kHz fixed frequency internal oscillator
• TTL shutdown capability, low power standby mode
• High efficiency
• Uses readily available standard inductors
• Thermal shutdown and current limit protection

• Simple high-efficiency step-down(buck) regulator
• Efficient pre-regulator for linear regulators
• On-card switching regulators
• Positive to negative converter(Buck-Boost)