Step down voltage, input voltage must be higher than output voltage.Descriptions: The LM2596 series of regulators are monolithic integrated circuits that provide all the active functions for a step-down (buck) switching regulator, capable of driving a 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, and an adjustable output version. Requiring a minimum number of external components, these regulators are simple to use and include internal frequency compensation, and a fixed-frequency oscillator. The LM2596 series operates at a switching frequency of 150 kHz, thus allowing smaller sized filter components than what would be required with lower frequency switching regulators. Available in a standard 7-pin TO-220 package with several different lead bend options, and a 7-pin TO-263 surface mount package. A standard series of inductors are available from several different manufacturers optimized for use with the LM2596 series. This feature greatly simplifies the design of switch-mode power supplies. Other features include a ±4% tolerance on output voltage under specified input voltage and output load conditions, and ±15% on the oscillator frequency. External shutdown is included, featuring typically 80 µA standby current. Self-protection features include a two stage frequency reducing current limit for the output switch and an overtemperature shutdown for complete protection under fault conditions. Features: -3.3-V, 5-V, 12-V, and Adjustable Output Versions -Adjustable Version Output Voltage Range: 1.2-V to 37-V ± 4% Maximum Over Line and Load Conditions -Available in TO-220 and TO-263 Packages -3-A Output Load Current -Input Voltage Range Up to 40 V -Requires Only 4 External Components -Excellent Line and Load Regulation Specifications -150-kHz Fixed-Frequency Internal Oscillator -TTL Shutdown Capability -Low Power Standby Mode, IQ, Typically 80 µA -High Efficiency -Uses Readily Available Standard Inductors -Thermal Shutdown and Current-Limit Protection Datasheet: http://www.ti.com/lit/ds/snvs124d/snvs124d.pdf
Last Updated @ 4/29/2017 10:15:49 PM
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