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STM32H745II Scheda tecnica(PDF) 112 Page - STMicroelectronics |
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STM32H745II Scheda tecnica(HTML) 112 Page - STMicroelectronics |
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112 / 252 page ![]() Electrical characteristics STM32H745xI/G 112/252 DS12923 Rev 1 6.3.2 VCAP external capacitor Stabilization for the main regulator is achieved by connecting an external capacitor CEXT to the VCAP pin. CEXT is specified in Table 25. Two external capacitors can be connected to VCAP pins. Figure 15. External capacitor CEXT 1. Legend: ESR is the equivalent series resistance. VOS1 LDO 125 400 1.62 SMPS step-down converter VOS2 LDO 125 300 1.62 SMPS step-down converter 125 140 VOS3 LDO(2) 105 64 1.2(2) LDO 125 200 1.62 SMPS step-down converter 125 140(3) SVOS4 LDO 105 N/A 1.62 SMPS step-down converter 125 140(3) SVOS5 LDO 105 N/A 1.62 SMPS step-down converter 125 140(3) 1. VOS0 (power scale 0) is not available when the SMPS step-down converter directly supplies VCORE. 2. Only for power-up sequence when the SMPS step-down converter supplies the LDO. 3. Extended Industrial temperature range sales types (range 3). Table 24. Supply voltage and maximum frequency configuration (continued) Power scale VCORE source Max TJ (°C) Max frequency (MHz) Min VDD (V) Table 25. VCAP operating conditions(1) Symbol Parameter Conditions CEXT Capacitance of external capacitor 2.2 µF(2) ESR ESR of external capacitor < 100 m Ω MS19044V2 ESR R Leak C |
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