Describe something in detail, including its appearance, characteristics,
LM2575HVS-5.0/NOPB is a high-voltage buck switching regulator in the SIMPLE SWITCHER® series from Texas Instruments. It offers a 5V fixed output and is packaged in a TO-263-5 surface mount style. This device is a single-chip integrated circuit that provides all the active functions required for a buck switching regulator, capable of driving a 1A load and featuring excellent linearity and load regulation capabilities.
Main performance parameters: Input voltage range 4V to 60V (for high voltage HV version), output voltage fixed at 5V, maximum output current 1A. Switching frequency 52kHz (typical value), efficiency up to 77% @ 1A. Typical static current 10mA, standby current 50µA (typical value).
This device is controlled in voltage mode and the duty cycle of its operation can reach up to 98%. It integrates per-cycle current limiting and over-temperature shutdown protection functions to ensure the system's safety in case of faults. It is packaged in a surface mount TO-263-5 (5-pin + heat sink) type, with a working temperature range of -40°C to +125°C. It complies with RoHS standards and is lead-free and environmentally friendly.
Features ：
• Product Type: Voltage Reduction Type DC-DC Switching Voltage Regulator (Buck), SIMPLE SWITCHER® Series
• Input Voltage (Vin): 4V ~ 60V (for HV high-voltage version)
• Output Voltage (Vout): Fixed at 5V with an accuracy of ±4%
• Output current (Iout): Maximum 1A
• Switching frequency: 52kHz, fixed frequency (within the range of 42kHz to 63kHz)
• Conversion efficiency: 77% @ Vin = 12V, Iout = 1A
• Static Current (Iq): Typical value 10mA
• Standby current: 50 µA (typical value, external shutdown mode)
• Control mode: Voltage mode control
• Duty cycle: Up to 98%
• Protection functions: Cycle-by-cycle overcurrent protection, thermal shutdown protection, under-voltage lockout, short-circuit protection
• Functional features: External shutdown enable, built-in frequency compensation, requires external rectifier diode
• Synchronous rectification: Not supported
• Operating temperature range: -40°C to +125°C
• Package type: TO-263-5 (DDPAK/TO-263-5), 5 pins + heat sink, size 10.16mm × 8.42mm × 4.83mm
• MSL level: Level-3 (168 hours)
• Environmental compliance: Meets RoHS3 standards, lead-free (with NOPB suffix)
Application：
• Industrial control equipment: Motor drive, PLC power supply, Factory automation system
• Automotive electronics: Vehicle power supply system, battery management (confirm working temperature)
• Communication equipment: base stations, network equipment, telecommunications power supplies
• Distributed power generation system: 48V bus is stepped down to 5V at the power output terminal (POL) for the load.
• Battery-powered equipment: Electric tools, portable devices
• Alternative Linear Voltage Regulator: Enhances Efficiency and Reduces Heat Sink Size
