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L6935 数据表(PDF) 16 Page - STMicroelectronics |
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L6935 数据表(HTML) 16 Page - STMicroelectronics |
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16 / 20 page ![]() Demonstration board description L6935 16/20 7 Demonstration board description Figure 15 and Figure 16 show the schematic and the layout of the demonstration board designed for L6935. VIN and VBIAS may be different and, in this case, R4 must not be mounted. C3 defines the Soft-Start timer, according to the relationship described in the Section 5.1. The value of the output divider R1 / R2 have to be designed in order to program the desired VOUT value, according to the following equation: Figure 15. Demonstration board schematic Figure 16. Demonstration board layout V OUT 0.5 = 1 R 1 R 2 ------- + ⎝⎠ ⎛⎞ ⋅ VIN C4 R1 R2 VOUT L6935 VIN SS GND VOUT ADJ EN VBIAS PAD VBIAS R4 C2 C3 C6 PGOOD R3 PGOOD R5 C1 ADJ EN 6 16,17,18 5 19 8, 9, 10 7 2 20 C5 GND |
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