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LM2575-12BT Datenblatt(PDF) 6 Page - Micrel Semiconductor |
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LM2575-12BT Datenblatt(HTML) 6 Page - Micrel Semiconductor |
6 / 12 page Micrel, Inc. LM2575 May 2009 6 M9999-051209-B Test Circuits and Layout Guidelines LM2575 + 100µF +VIN 1 3 GND 5 ON/OFF 2 OU TPU T 4 F E E DBAC K L1 330µH + D1 MBR360 C OUT 470µF R2 R1 VOUT 5.00V 7V - 40V UN RE GUL A TE D DC INPUT CIN L O A D CIN — 100µF, 75V Aluminum Electrolytic COUT— 470µF, 15V Aluminum Electrolytic D1 — Schottky, MBR360 L1 — 330µH, 415-0926 (AIE) R1 — 1k, 0.01% R2 — 3.065k, 0.01% 5-pin TO-220 socket—2936 (Loranger Mfg. Co.) 4-pin TO-3 socket—8112-AG7 (Augat Inc.) LM2575-5.0 + 100µF +VIN 1 3 GND 5 ON/OFF 2 OU TPU T 4 F E E DBAC K L1 330µH + D1 MBR360 C OUT 220µF VOUT 5.00V Note: Pin numbers are for TO-220 Package 7V - 40V UN RE GUL A TE D DC INPUT CIN CIN — 100µF, 75V Aluminum Electrolytic COUT— 330µF, 15V Aluminum Electrolytic D1 — Schottky,MBR360 L1 — 330µH, 415-0926 (AIE) 5-pin TO-220 socket — 2936 (Loranger Mfg. Co.) 4-pin TO-3 socket — 8112-AG7 (Augat Inc.) L O A D Figure 1. As in any switching regulator, layout is very important. Rapidly switching currents associated with wiring inductance generate voltage transient switch can cause problems. For minimal stray inductance and ground loops, the length of the leads indicated by heavy lines should be kept as short as possible. Single-point grounding (as indicated) or ground plane construction should be used for best results. |
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