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LP3971SQ-B410/NOPB-LP3971SQ-N510 NOPB
Power Management Unit for Advanced Application Processors
LP3971
www.ti.com SNVS432V –JANUARY 2006–REVISED MAY 2013
LP3971 Power Management Unit for Advanced Application Processors
Checkfor Samples: LP3971
1FEATURES KEY SPECIFICATIONS Compatible with Advanced Applications • Buck Regulators
Processors Requiring DVM (Dynamic Voltage – Programmable VOUT from 0.725to 3.3VManagement) – Upto 95% Efficiency Three Buck Regulators for Powering High – Upto 1.6A Output CurrentCurrent Processor Functionsor I/O's – ±3% Output Voltage Accuracy• 6 LDO's for Powering RTC, Peripherals, and • LDO’sI/O's Programmable VOUTof 1.0V–3.3V• Backup Battery Charger with Automatic ±3% output voltage accuracySwitch for Lithium-Manganese Coin Cell
Batteries and Super Capacitors – 150/300/370 mA output currentsI2C Compatible High Speed Serial Interface – LDO RTC30 mA Software Controlof Regulator Functions and – LDO1 300 mA
Settings – LDO2 150 mA Precision Internal Reference – LDO3 150 mA Thermal Overload Protection – LDO4 150 mA Current Overload Protection – LDO5 370 mA Tiny 40-pin 5x5 mm WQFN Package – 100 mV (typ) dropout
APPLICATIONS DESCRIPTIONThe LP3971isa multi-function, programmable Power
• PDA PhonesManagement Unit, designed especially for advanced
• Smart Phones application processors. The LP3971is optimized for
• Personal Media Players low power handheld applications and provides6 low
Digital Cameras dropout, low noise linear regulators, three DC/DC
magnetic buck regulators,a back-up battery charger
• Application Processors and two GPIO’s.A high speed serial interfaceis
– Marvell PXA included to program individual regulator output voltagesas wellas on/off control.
