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L6206 Datasheet(PDF) 21 Page - STMicroelectronics |
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L6206 Datasheet(HTML) 21 Page - STMicroelectronics |
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21 / 53 page  21/53 AN1762 APPLICATION NOTE Figure 21. Typical disable and delay time as a function of CEN, for several values of REN. 3.13 Adjusting the Over Current Detection trip point (L6206 ONLY) The L6206 allows the user to set the Over Current Detection threshold separately for the two full bridges con- necting two resistors (RCL) to pins PROGCLA and PROGCLB. The OCD threshold (ISOVER) follows the equa- tions: –ISOVER = 5.6A ±30% at -25 °C < Tj < 125 °C if RCL = 0 Ω (PROGCL connected to GND) –ISOVER = ±10% at -25 °C < Tj < 125 °C if 5K Ω < RCL < 40k Ω Figure 22 shows the OCD threshold versus RCL value in the range from 5kΩ to 40kΩ. 11 0 1 0 0 0. 1 1 10 C EN [ nF] 11 0 1 0 0 1 10 10 0 1 . 10 3 C EN [ nF] R EN = 220 k Ω R EN = 100 k Ω R EN = 47 k Ω R EN = 33 k Ω R EN = 10 k Ω 22100 R CL ---------------- |
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