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LM2575-3.3TB5BT 数据表(PDF) 6 Page - First Components International |
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LM2575-3.3TB5BT 数据表(HTML) 6 Page - First Components International |
6 / 10 page 6 TEST CIRCUIT AND LAYOUT GUIDELINES Careful layout is important with any switching regulator. Rapidly switching currents associated with wiring inductance generate voltage transients, which can cause problems. To minimize inductance and ground loops, the lengths of the leads indicated by heavy lines in Figure 1 below should be kept as short as possible. Single- point grounding (as indicated in Figure 1) or ground plane construction should be used for best results. When using the Adjustable version, place the programming resistors as close as possible to sensitive feedback wiring short. V IN Unregulated DC Input +V IN 1 + C IN GND 3 5 2 Output 4 Feedback L1 D1 MBR360 C OUT V OUT FIXED OUTPUT + ON/OFF L O A D Figure 1(a). Fixed Output Voltage Versions C - 100 µF, 75V, Aluminum Electrolytic IN C - 330 µF, 25V, Aluminum Electrolytic OUT D1 - Schottky, MBR360 L1 - 330 µH, R1 - 2k, 0.1% R2 - 6.12k, 0.1% 3L Electronic Corp. TC-331M-1.0A- 5026 330 µH 330 µF 100 µF LM2575, to keep the LM2575 LM2575 1.0A Step - Down Voltage Switching Regulators |
类似零件编号 - LM2575-3.3TB5BT |
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类似说明 - LM2575-3.3TB5BT |
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