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LM2596 Dataheets PDF



Part Number LM2596
Manufacturers HTC
Logo HTC
Description Step-Down Switching Regulator
Datasheet LM2596 DatasheetLM2596 Datasheet (PDF)

3.0A, 150kHz, Step-Down Switching Regulator LM2596 FEATURES  3.3V, 5.0V, 12V, and Adjustable Output version  Adjustable Output Voltage range, 1.2V to 37V ±4% Max. Over Line and Load conditions  Guaranteed Output Current of 3A  Available in TO-263, TO-220 Packages  Requires Only 4 External Components  Excellent Line and Load Regulation Specifications  150kHz Fixed Frequency Internal Oscillator  TTL Shutdown Capability  Low Power Standby Mode, IQ typically 100mA  Thermal Shutdown and C.

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3.0A, 150kHz, Step-Down Switching Regulator LM2596 FEATURES  3.3V, 5.0V, 12V, and Adjustable Output version  Adjustable Output Voltage range, 1.2V to 37V ±4% Max. Over Line and Load conditions  Guaranteed Output Current of 3A  Available in TO-263, TO-220 Packages  Requires Only 4 External Components  Excellent Line and Load Regulation Specifications  150kHz Fixed Frequency Internal Oscillator  TTL Shutdown Capability  Low Power Standby Mode, IQ typically 100mA  Thermal Shutdown and Current Limit Protection  Moisture Sensitivity Level 3 APPLICATION  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 TO-263 PKG 1 5 TO-220 PKG 15 SOP8-PP PKG 4 1 ORDERING INFORMATION Device Package LM2596R-X.X TO-263-5L LM2596T-X.X TO-220-5L LM2596DP-X.X SOP-8PP LM2596GDP-X.X SOP-8PP X.X = Output Voltage = 3.3, 5.0, 12, ADJ DESCRIPTION The LM2596 series of regulators are 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. These devices are available in fixed output voltages of 3.3V, 5.0V,12V, and an adjustable output version. These regulators were designed to minimize the number of external components to simplify the power supply design. Standard series of inductors optimized for use with the LM2596 are offered by several different inductor manufacturers. Since the LM2596 converter is a switchmode power supply, its efficiency is significantly higher in comparison with popular three-terminal linear regulators, especially with higher input voltages. In many cases, the power dissipated is so low that no heatsink is required or its size could be reduced dramatically. A standard series of inductors optimized for use with the LM2596 are available from several different manufacturers. This feature greatly simplifies the design of switchmode power supplies. The LM2596 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㎂ (typical) standby current. Self-protection features include a two stage frequency reducing current limit for output switch and an over temperature shutdown for complete protection under fault conditions. Jan. 2016 - Rev. 1.4.4 -1 - HTC 3.0A, 150kHz, Step-Down Switching Regulator LM2596 Ordering Information VOUT Package Order No. SOP-8PP LM2596DP-ADJ SOP-8PP LM2596GDP-ADJ ADJ TO-220-5L LM2596T-ADJ TO-263-5L LM2596R-ADJ SOP-8PP LM2596DP-3.3 3.3V SOP-8PP TO-220-5L LM2596GDP-3.3 LM2596T-3.3 TO-263-5L LM2596R-3.3 SOP-8PP LM2596DP-5.0 5.0V SOP-8PP TO-220-5L LM2596GDP-5.0 LM2596T-5.0 TO-263-5L LM2596R-5.0 SOP-8PP LM2596DP-12 SOP-8PP LM2596GDP-12 12V TO-220-5L LM2596T-12 TO-263-5L LM2596R-12 Description Package Marking 3A, Adjustable, 150kHz, On/off LM2596-ADJ 3A, Adjustable, 150kHz, On/off LM2596G-ADJ 3A, Adjustable, 150kHz, On/off LM2596-ADJ 3A, Adjustable, 150kHz, On/off LM2596-ADJ 3A, Fixed, 150kHz, On/off LM2596-3.3 3A, Fixed, 150kHz, On/off LM2596G-3.3 3A, Fixed, 150kHz, On/off LM2596-3.3 3A, Fixed, 150kHz, On/off LM2596-3.3 3A, Fixed, 150kHz, On/off LM2596-5.0 3A, Fixed, 150kHz, On/off LM2596G-5.0 3A, Fixed, 150kHz, On/off LM2596-5.0 3A, Fixed, 150kHz, On/off LM2596-5.0 3A, Fixed, 150kHz, On/off LM2596-12 3A, Fixed, 150kHz, On/off LM2596G-12 3A, Fixed, 150kHz, On/off LM2596-12 3A, Fixed, 150kHz, On/off LM2596-12 Status Active Active Active Active Contact Us Contact Us Active Active Active Contact Us Active Active Contact Us Contact Us Active Active LM 2596 Output Voltage : 3.3V / 5.0V / 12V / ADJ Package Type Material Class Root Name DP : SOP8-PP T : TO220-5L R : TO263-5L G : Halogen Free Blank : Pb Free Product Code Jan. 2016 - Rev. 1.4.4 -2 - HTC 3.0A, 150kHz, Step-Down Switching Regulator PIN CONFIGURATION VIN 1 VOUT 2 GND 3 FEEDBACK 4 Exposed PAD 8 N/C 7 N/C 6 N/C 5 ON/OFF SOP8-PP TO220-5L ON/OFF FEEDBACK GND VOUT VIN LM2596 ON/OFF FEEDBACK GND VOUT VIN TO263-5L PIN DESCRIPTION Package TO-220 5L TO-263 5L SOP8-PP Symbol Description This pin is the positive input supply for the LM2596 step–down 1 1 VIN switching regulator. In order to minimize voltage transients and to supply the switching currents needed by the regulator, a suitable input bypass capacitor must be present. This is the emitter of the internal switch. The saturation voltage 2 2 VOUT Vsat of this output switch is typically 1.5 V. It should be kept in mind that the PCB area connected to this pin should be kept to a minimum in order to minimize coupling .


LM2596 LM2596 TA7279AP


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