LM2576SX-3.3

LM2576 Series are step-down switching regulators with all required active functions. It is capable of driving 3A load with excellent line and load regulations. These devices are available in fixed output voltages of 3.3V, 5V and adjustable output version. LM2576 series operates at a switching frequency of 52kHz thus allowing smaller sized filter components than what would be needed with lower frequency switching regulators. It substantially not only reduces the area of board size but also the size of heat sink, and in some cases no heat sink is required. The ±4% tolerance on output voltage within specified input voltages and output load conditions is guaranteed. Also, the oscillator frequency accuracy is within ±10%. External shutdown is included. Featuring 70μA (typical) standby current. The output switch includes cycle-by-cycle current limiting, as well as thermal shutdown for full protection under fault conditions.

Key features

• Simple High-efficiency Step down Regulator
• On-Card Switching Regulators
• Positive to Negative Converter
• Output Voltage: 3.3V, 5V & Adjustable version
• Adjustable Output Voltage Range 1.23V~37V ±4%
• 52kHz fixed switching frequency
• Voltage Mode Non-synchronous PWM control
• Thermal Shutdown and Current Limit Protection
• ON/OFF Shutdown Control Input
• High Efficiency
• Short Circuit Protect(SCP)
• Operating Voltage Can be up to 40V
• Output Load Current 3A
• Low Power Standby Mode
• P+ Product Enhancement Tested