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LP3972-LP3972SQ-A514-LP3972SQ-A514 NOPB-LP3972SQ-A514/NOPB-LP3972SQ-E514 NOPB-LP3972SQ-I414 NOPB
Power Management Unit for Advanced Application Processors
BUCK3
VIN
LDO1
LDO2
LDO3
LDO4
Back-up
Battery
LP3972BUCK2
BUCK1
Product
Folder
Sample &
Buy
Support &
Community
LP3972SNVS468L –SEPTEMBER 2006–REVISED NOVEMBER 2015
LP3972 Power Management Unit for Advanced Application Processors Features 2 Applications Compatible With Advanced Applications • Smart Phones
Processors Requiring Dynamic Voltage • Personal Media Players
Management (DVM) • Digital Cameras Backup Battery Charger With Automatic Switch for • Application ProcessorsLithium-Manganese Coin-Cell Batteries and Super – Marvell PXACapacitors – Freescale•I2 C-Compatible High-Speed Serial Interface Samsung• Software Controlof Regulator Functions and
Settings
3 Description• Thermal and Current Overload Protections The LP3972isa multi-function• Three Buck Regulators for Powering High-Current management unit (PMU) especiallyProcessor Functionsor I/Os advanced application The
optimized for low-power applications– Programmable VOUT from 0.725Vto 3.3V
provides six low-dropout linear– Upto 95% Efficiency and 1.6-A Output Current three DC-DC magnetic– ±3% Output Voltage Accuracy battery charger, and two high-speed
interfaceis included• Six LDOs for Powering RTC, Peripherals, and
output voltagesas well control.I/Os Programmable VOUTof1Vto 3.3V
Device Information(1) ±3% Output Voltage Accuracy LDO_RTC30 mA LDO1 300 mA (1) Forall available packages, see the orderable addendumat
the endofthe data sheet.– LDO2 150 mA LDO3 150 mA LDO4 150 mA LDO5 400 mA
Simplified Schematic
