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LM2594DADJG Datasheet(PDF) 1 Page - ON Semiconductor |
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LM2594DADJG Datasheet(HTML) 1 Page - ON Semiconductor |
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1 / 25 page  © Semiconductor Components Industries, LLC, 2009 January, 2009 − Rev. 0 1 Publication Order Number: LM2594/D LM2594 0.5 A, Step-Down Switching Regulator The LM2594 regulator is monolithic integrated circuit ideally suited for easy and convenient design of a step−down switching regulator (buck converter). It is capable of driving a 0.5 A load with excellent line and load regulation. This device is available in adjustable output version. It is internally compensated to minimize the number of external components to simplify the power supply design. Since LM2594 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. The LM2594 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 8−Lead PDIP and 8−Lead Surface Mount packages. The other features include a guaranteed $4% tolerance on output voltage within specified input voltages and output load conditions, and $15% on the oscillator frequency. External shutdown is included, featuring 50 mA (typical) standby current. Self protection features include switch cycle−by−cycle current limit for the output switch, as well as thermal shutdown for complete protection under fault conditions. Features • Adjustable Output Voltage Range 1.23 V − 37 V • Guaranteed 0.5 A Output Load Current • Wide Input Voltage Range up to 40 V • 150 kHz Fixed Frequency Internal Oscillator • TTL Shutdown Capability • Low Power Standby Mode, typ 50 mA • Thermal Shutdown and Current Limit Protection • Internal Loop Compensation • Moisture Sensitivity Level (MSL) Equals 1 • These are Pb−Free Devices Applications • 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 SOIC−8 D SUFFIX CASE 751 PIN CONNECTIONS See detailed ordering and shipping information in the package dimensions section on page 23 of this data sheet. ORDERING INFORMATION PDIP−8 N SUFFIX CASE 626 http://onsemi.com A = Assembly Location WL = Wafer Lot YY = Year WW = Work Week G or G = Pb−Free Package 2594−ADJ AWL YYWW MARKING DIAGRAMS 1 8 LM2594 AYWW G 1 8 OUTPUT ON/OFF GND VIN FB NC NC NC FB NC NC NC OUTPUT ON/OFF GND VIN (Top View) (Top View) 1 2 3 4 8 7 6 5 1 2 3 4 8 7 6 5 SOIC−8 PDIP−8 |
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