(Hong Kong)
Product Summary
The LM2596R-5.0 is a Step-Down Switching Regulator. The LM2596R-5.0 is monolithic integrated circuits ideally suited for easy and convenient design of a step-down switching regulator (buck converter). All circuits of this series are capable of driving a 3.0A load with excellent line and load regulation. The LM2596R-5.0 is available in fixed output voltages of 3.3V, 5.0V, 12V, 15V, and an adjustable output version. The regulator was designed to minimize the number of external components to simplify the power supply design. Standard series of inductors optimized for use with the LM2576 are offered by several different inductor manufacturers. Since the LM2596R-5.0 converter is a switch-mode power supply, its efficiency is significantly higher in comparison with popular three-terminal linear regulators, especially with higher input voltages. available from several different manufacturers. This feature greatly simplifies the design of switch-mode power supplies. The LM2596R-5.0 features include a guaranteed +/- 4% tolerance on output voltage within specified input voltages and output load conditions, and +/-15% on the oscillator frequency (+/- 2% over 0℃ to 125 ℃). External shutdown is included, featuring 80 uA(typical) standby current. The output switch includes cycle-bicycle current limiting, as well as thermal shutdown for full protection under fault conditions. In many cases, the power dissipated is so low that no heat sink is required or its size could be reduced dramatically. The applications of the LM2596R-5.0 include Simple High-Efficiency Step-Down (Buck) Regulator, Efficient Pre-Regulator for Linear Regulators, On-Card Switching Regulators, Positive to Negative Converter(Buck-Boost), Negative Step-Up Converters, Power Supply for Battery Chargers.
Parametrics
LM2596R-5.0 absolute maximum ratings: (1)Maximum Supply Voltage: 45 V; (2)ON/OFF Pin Input Voltage: -0.3 V≤V≤ Vin; (3)Output Voltage to Ground: -1.0 V; (4)Storage Temperature Range: -65 to +150 ℃; (5)Minimum ESD Rating: 2.0 KV; (6)Lead Temperature: 260 ℃; (7)Maximum Junction Temperature: 150 ℃.
Features
LM2596R-5.0 features: (1)3.3V, 5.0V, 12V, 15V, and Adjustable Output Versions; (2)Adjustable Version Output Voltage Range, 1.23 to 37V +/- 4%. Maximum Over Line and Load Conditions; (3)Guaranteed 3.0A Output Current; (4)Wide Input Voltage Range; (5)Requires Only 4 External Components; (6)150Khz Fixed Frequency Internal Oscillator; (7)TTL Shutdown Capability, Low Power Standby Mode; (8)High Efficiency; (9)Uses Readily Available Standard Inductors; (10)Thermal Shutdown and Current Limit Protection; (11)Moisture Sensitivity Level(MSL) Equals1.
Diagrams
