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LM2575-3.3TB5BT 데이터시트(PDF) 7 Page - First Components International |
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LM2575-3.3TB5BT 데이터시트(HTML) 7 Page - First Components International |
7 / 10 page 7V - 40V Unregulated DC Input +V IN 1 C IN GND 3 5 2 4 D1 MBR360 L1 R2 R1 Output Feedback V =5.0V OUT C OUT + + L O A D Figure 1(b).Adjustable Output Voltage Versions V = V ( 1 + ) OUT REF R2 = R1 ( -1) where V = 1.23V, R1 between 1k and 5k. REF R2 R1 V OUT V REF 330 µF 100 µF 330 µH ON/ OFF Figure 2. Switch Saturation Voltage 1.2 1.0 0.8 0.6 0.4 0 0.2 0.4 0.6 0.8 1.0 SWITCH CURRENT (A) T = - 55°C J 2.0 1.5 1.0 0.5 0 -75 -50 -25 0 25 50 75 100 125 150 JUNCTION TEMPERATURE (°C) Figure 3. Dropout Voltage DVOUT = 5% R = 0.2W IND I = 1A LOAD I = 200mA LOAD Typical Performance Characteristics T = - 25°C J T = 150°C J LM2575-adj LM2575 1.0A Step - Down Voltage Switching Regulators |
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