LM2576HVSX-3.3/NOPB
SIMPLE SWITCHER® 3A降压型稳压器 SIMPLE SWITCHER® 3A Step-Down Voltage Regulator
Description
The LM2576 series of regulators are monolithic integrated circuits that provide all the active functions
for a step-down buck switching regulator, capable of driving 3-A load with excellent line and load
regulation. These devices are available in fixed output voltages of 3.3 V, 5 V, 12 V, 15 V, and an adjustable output version.
Features
• 3.3-V, 5-V, 12-V, 15-V, and Adjustable Output Versions
• Adjustable Version Output Voltage Range,1.23 V to 37 V 57 V for HV Version ±4% Maximum Over Line and Load Conditions
• Specified 3-A Output Current
• Wide Input Voltage Range: 40 V Up to 60 V for HV Version
• 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
Applications
• Simple High-Efficiency Step-Down Buck Regulator
• Efficient Preregulator for Linear Regulators
• On-Card Switching Regulators
• Positive-to-Negative Converter Buck-Boost