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LM2575 Fiches technique(PDF) 2 Page - Texas Instruments |
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LM2575 Fiches technique(HTML) 2 Page - Texas Instruments |
2 / 10 page www.ti.com Internal Regulator ON/OFF _ + _ + 1.23-V Band-Gap Reference 52-kHz Oscillator Reset Thermal Shutdown Current Limit FEEDBACK 7 CIN + VIN 6 Unregulated DC Input GND 5, 12, 13 OUTPUT 3 ON/OFF 9 COUT + D1 L O A D VOUT 1-A Switch Driver Fixed-Gain Error Amp Comparator R2 R1 R1 = Open, R2 = 0 Ω L1 Absolute Maximum Ratings (1) Package Thermal Data (1) Recommended Operating Conditions LM2575 1-A SIMPLE STEP-DOWN SWITCHING VOLTAGE REGULATOR SLVS569E – JANUARY 2005 – REVISED JANUARY 2006 FUNCTIONAL BLOCK DIAGRAM over operating free-air temperature range (unless otherwise noted) MIN MAX UNIT VIN Supply voltage 42 V ON/OFF pin input voltage –0.3 VIN V Output voltage to GND (steady state) –1 V TJ Maximum junction temperature 150 °C Tstg Storage temperature range –65 150 °C (1) Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. PACKAGE BOARD θ JC θ JA PDIP (N) High K, JESD 51-7 51 °C/W 67 °C/W (1) Maximum power dissipation is a function of TJ(max), θJA, and TA. The maximum allowable power dissipation at any allowable ambient temperature is PD = (TJ(max) – TA)/θJA. Operating at the absolute maximum TJ of 150°C can affect reliability. over operating free-air temperature range (unless otherwise noted) MIN MAX UNIT VIN Supply voltage 4.75 40 V TJ Operating virtual junction temperature –40 125 °C 2 |
Numéro de pièce similaire - LM2575 |
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Description similaire - LM2575 |
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