The LM2596 series of Buck Switching Regulators are monolithic integrated circuits that provide all the active functions for a step-down (buck) switching regulator, capable of driving a 3A load with excellent line and load regulation. Requiring a minimum number of external components, these Buck Switching 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 needed with lower frequency switching regulators. Available in a standard 5-lead TO-220 package with several different lead bend options, and a 5-lead D2PAK 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 guaranteed +/-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 over temperature shutdown for complete protection under fault conditions. See LM2595 for 1.0A and LM2594 for 0.5A.
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Adjustable output voltage range, 1.2V to 37V +/-4% max over line and load conditions
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Flexible to configure for different output voltages and applications
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Available in TO-220 and D2PAK packages
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Different mounting options
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Guaranteed 3A output load current
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High power designs
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Input voltage range up to 40V
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Can be used with several input voltage supplies (+12V, +24V, +36V)
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Excellent line and load regulation specifications
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Provides a stable power supply
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150 kHz fixed frequency internal oscillator
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No external component required to set frequency
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TTL shutdown capability
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Easy to implement low power modes
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Low power standby mode, Iq typically 80 µA
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Power saving mode
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Uses readily available standard inductors
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Quick and easy implementation
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Thermal shutdown and current limit
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Additional protection against faults
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LM2596S-ADJ/NOPB Product overview
The LM2596S-ADJ/NOPB is a step-down Voltage Regulator, capable of driving a 3A load with excellent line and load regulation. This device is available in fixed output voltages of 3.3, 5, 12V 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 LM2596S-5.0/NOPB series operates at a switching frequency of 150kHz thus allowing smaller sized filter components than what would be needed with lower frequency switching regulators.
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Ensured 3A Output Load Current
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Input Voltage Range up to 40V
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Requires Only 4 External Components
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Excellent Line and Load Regulation Specifications
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150kHz Fixed Frequency Internal Oscillator
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TTL Shutdown Capability
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Low-power Standby Mode, IQ Typically 80µA
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High Efficiency
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Uses Readily Available Standard Inductors
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Thermal Shutdown and Current Limit Protection
ESD sensitive device, take proper precaution while handling the device, Absolute Maximum Ratings indicate limits beyond which damage to the device may occur.
