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PIFE32251B-R68MS Scheda tecnica(PDF) 55 Page - Texas Instruments |
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PIFE32251B-R68MS Scheda tecnica(HTML) 55 Page - Texas Instruments |
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55 / 157 page ![]() ENABLE 30us deglitch VSENSE + - 0.90*VREF + - + - 1.10*VREF + - ENA ENA PWRGD N VDDIO P VREF 0.90*VREF 1.10*VREF 1.08*VREF 1.05*VREF 0.92*VREF 0.95*VREF time PWRGD Good Good 30us 30us 30us 30us Copyright © 2016, Texas Instruments Incorporated 55 TPS650830 www.ti.com SLVSCF4A – DECEMBER 2014 – REVISED JULY 2016 Submit Documentation Feedback Product Folder Links: TPS650830 Detailed Description Copyright © 2014–2016, Texas Instruments Incorporated Figure 6-3. Powergood Window Comparator with Push-Pull Output 6.3.4 3.3-V LDO and 3V3SW Load Switch The LDO3V powers up when Vin_LDO3V pin goes above the UVLO3V threshold. The LDO3V powers the internal digital blocks and analog blocks of the PMIC. It is also used as the positive rail of the powergood comparator and level-shifter outputs. The 3V3 load switch is optional to connect or disconnect the VOUT3V3SW output to a load. The load switch is enabled by the EN3V3SW pin. |
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