PF8121
12-channel power management integrated circuit for high
performance applications
Rev. 5 — 24 February 2021
Pr...
PF8121
12-channel power management integrated circuit for high
performance applications
Rev. 5 — 24 February 2021
Product data sheet
1 Overview
The PF8121 is a power management integrated circuit (PMIC) designed for high performance consumer applications. It features seven high efficiency buck converters and four linear regulators for powering the processor, memory and miscellaneous peripherals.
Built-in one time programmable memory stores key startup configurations, drastically reducing external components typically used to set output
voltage and sequence of external regulators. Regulator parameters are adjustable through high-speed I2C after start up offering flexibility for different system states.
2 Features
Up to seven high efficiency buck converters Four linear regulators with load switch options RTC supply and coin cell charger Watchdog timer/monitor
Voltage and system monitoring circuits One time programmable device configuration 3.4 MHz I2C communication interface 56-pin 8 x 8 QFN package
NXP Semiconductors
PF8121
12-channel power management integrated circuit for high performance applications
3 Simplified application diagram
Coin Cell
PF8121
VSNVS
RTC Clock
MCU
VIN: 2.7 V to 5.5 V
BUCK1 BUCK2 BUCK3
VDD_MAIN VDD_GPU
BUCK4
VDD_CPU
BUCK5
VDD_DDRIO
BUCK6
BUCK7
LDO1 LDO2 LDO3 LDO4 CONTROL
SIGNALS
1.8 V I/O (LV GPIO) 3.3 V I/O (HV GPIO) VDD_SCU
SD Card
2.5 V I/O
MISC
INTERFACING AND I2C COMMUNICATIONS
I2C
LPDDR Memory
DRAM
Figure ...