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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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AN2937 датащи(PDF) 22 Page - STMicroelectronics |
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AN2937 датащи(HTML) 22 Page - STMicroelectronics |
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22 / 41 page  Jumper settings AN2937 22/41 Doc ID 15418 Rev 1 9.12 Connection of LDO output (5 V) to the PVCC pin (LDO5V_BYP) 9.13 Regulation of the charge pump CP (CP SEL) 9.14 Output 1, virtual ESR connection Table 14. Jumper S12 LDO5V BYP (connect PVCC pin to S12) Position Connection of LDO output (5 V) to PVCC pin Shorted If LDOREFIN = GND, LDO regulates 5 V. In this case the PVCC and VCC pin of the device can be supplied with the LDO by setting the jumper in this position. Open PVCC and VCC need to be supplied with an external 5 V source. The LDO is disconnected from the PVCC pin. Table 15. Jumper S13 CP SEL (connect CP_FB pin to S13) Position Regulation of the charge pump CP VCC or left floating The charge pump controller is disabled. External divider The charge pump regulates the voltage set with the external divider. Table 16. Jumper S14 VESR1 Position Virtual ESR enable circuit for section 1 Left floating Virtual ESR circuit is disabled. VESR1 Virtual ESR circuit is enabled. |
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