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CAT3604A Datasheet(PDF) 9 Page - ON Semiconductor |
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CAT3604A Datasheet(HTML) 9 Page - ON Semiconductor |
9 / 11 page CAT3604A http://onsemi.com 9 TYPICAL CHARACTERISTICS (VIN = 3.6 V, EN = VIN, CIN = COUT = 1 mF, unless otherwise specified.) Figure 21. Foldback Current Limiting OUTPUT CURRENT (mA) 500 400 300 200 100 0 0 1 2 3 4 5 1x Mode Recommended Layout When the driver is in the 1.5x charge pump mode, the 1 MHz switching frequency operation requires to minimize trace length and impedance to ground on all 4 capacitors. A ground plane should cover the area on the bottom side of the PCB opposite to the IC and the bypass capacitors. Capacitors Cin and Cout require short connection to ground which can be done with multiple vias as shown on Figure 22. A square copper area matches the QFN16 exposed pad (GND) which is connected by a trace to the pin 12 pad (GND). A large via (metalized hole) centered in the square pad provides a low impedance connection to the ground plane on the opposite side of the PCB and allows the heat dissipated by the driver IC to spread out resulting in excellent thermal performance. 2.25 mm 0.35 mm 0.65 mm Figure 22. PCB Layout Figure 23. Recommended QFN 16 Package Land Pattern |
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Descripción similar - CAT3604A |
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