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L7292 データシート(PDF) 21 Page - STMicroelectronics |
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L7292 データシート(HTML) 21 Page - STMicroelectronics |
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21 / 60 page  DocID028601 Rev 1 21/60 L7292 General description 60 7 General description The PMU is an integrated circuit designed to supply the µController and memory in applications supplied by a battery or 5 V. Each regulator is independent from the others and can be enabled or disabled by the I2C serial port. A 128-bit EEPROM is embedded in the device to store the default conditions used in each power up: The order in which the PSRs start during a power up sequence The programmable delay at the beginning and at the end of the power up sequence The programmable delay between each regulator start-up Excluding from the power up sequence any number of regulators The undervoltage mask and digital deglitch programmability for all regulators and for external and internal supplies Switching node slew rate programmability, disabling of synchronous rectification, PFM disabling for all switching regulators. All regulators employ synchronous rectification and have an automatic transition between PWM and PFM. A voltage monitor and thermal protection are present for a better control of system functionality. |
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