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The SY5881 is a power management IC (PMIC) designed for notebook, desktop, and embedded computing platforms.
There are four DCDC converters and two linear regulators integrated into the SY5881,
which can minimize the need for external components so that it can ease the layout in a constrained PCB area.
The DCDC converters are of high accuracy, high efficiency, and high flexibility. Two LDOs provide power rails for peripherals and pull-up resistors.
The SY5881 provides protection for a device when a fault occurs, such as overcurrent, output overvoltage, output undervoltage, short circuit, input overvoltage, and over temperature.
The SY5881 is a halogen- and lead-free device, compliant with RoHS. The package is WLCSP-36 2.4x2.4 .
AVIN input supply range: 2.7V to 3.7V
Four buck regulators: BUCK1,output range 1.7V ~ 2.9V; BUCK2,output range 0.9V ~ 2.0V; BUCK3,output range 0.5V ~ 1.3V; BUCK4,output range 0.675V ~ 2.0V
2 linear regulators: LDO1, 1V ~ 2.7V, 50mV/Step, 0.4A; LDO2, 1V ~ 2.7V, 50mV/Step, 0.4A
2 external converters
DCDC voltage accuracy: ±1% FB Voltage
PWM frequency adjustable：1Mhz~3Mhz，step 500Khz
BUCK1 can be set as load switch
BUCK4 can be set as linear regulator
LDO1/LDO2 can be set as load switch
Configurable Soft-start Time for All output
Configurable power on sequence
Configurable sleep and wake-up sequence
I2C Interface 400kHz/1MHz/3.4MHz
Built-in AVIN OV/UV warning indication and fault protection
Built-in VOUT OVP/UVP/OCL
Built-in Overd Temperature Protection
Built-in EFUSE for configurable default value of registers
8 multifunctional IOs
Solid-state drive
Video system
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SY5881