LP3972SQ-0514

• Advanced applications with compatible processors require DVM (Dynamic Voltage Management)
• Triple buck regulator high current power processor function or I/O
• 6 LDO for RTC power, peripherals and I/O
• Automatically switches battery backup chargers with lithium manganese coin cells and supercapacitors
• I 2 C-compatible high-speed serial interface
• Software controls adjustment functions and settings
• Precision internal reference
• Thermal overload protection
• Current overload protection
• Tiny 40-pin 5x5 mm LLP package

illustrate

The LP3972 is a versatile, programmable power management unit designed especially for advanced application processors. The LP3972 is optimized for low-power handheld applications and offers 6 low-dropout, low-noise linear regulators, three DC/DC magnetic buck regulators, a backup battery charger and two GPIOs. A high-speed serial interface is included in the plan for individual regulator output voltage and on/off control.

Main specifications of buck regulator

• Programmable V OUT from 0.725 to 3.3V
• Up to 95% efficiency
• Up to 1.6A output current
• ± 3% output voltage accuracy

• Programmable V OUT is 1.0V - 3.3V
• ± 3% output voltage accuracy
• Output current of 150/300/400 mA
• LDO_RTC30 milliamps
• LDO1300 milliamps
• LDO2150 milliamps
• LDO3150 milliamps
• LDO4150 milliamps
• LDO5400 milliamps
• 100 mV (typical) low dropout

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• PDA mobile phone
• Smartphone
• Personal media player
• Digital camera
• Application processor
• Marvell's PXA
• Fiskar
• Samsung