L7292 datasheet(21/60 Pages) STMICROELECTRONICS

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L7292

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.

L7292 数据表(PDF) 21 Page - STMicroelectronics