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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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L6460 датащи(PDF) 31 Page - STMicroelectronics |
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L6460 датащи(HTML) 31 Page - STMicroelectronics |
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31 / 139 page  L6460 Internal supplies Doc ID 17713 Rev 1 31/139 4.2 Charge pump regulator L6460 implements a charge pump regulator to generate a voltage over VSupply.This voltage is used to drive internal circuits and the external FET driver and cannot be used for any other purpose. This circuit is always under the supervisory circuit control, so no regulator can start before the VPump voltage reaches its undervoltage rising threshold. If VPump voltage falls down below its under voltage falling threshold, all the regulators will be switched off. The charge pump circuit is disabled when L6460 is in “low power mode”. Figure 4. Charge pump block diagram An example of capacitors value is: C FLY = 100 nF and CBOOST = 1 µF 4.3 V3v3 regulator V3v3 is the output of an internal regulator used to supply some low voltage internal circuits. This regulator is not intended to provide external current so it must not be used to supply external loads. An external capacitor must always be connected from this pin to GND, recommended value is in the range 80 ÷ 120 nF. Driver CFLY - + CPH VSupply CPL VPump CBOOST CLKBOOST EnVPump Ref M1 M2 VSupplyInt for VSupply lower than 15V, external diodes are required |
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