LP3972SQ-SMP1

• Compatible with advanced application processors requires DVM (Dynamic Voltage Management)
• Triple buck regulators are processor functions or I/O that drive high currents
• 6 LDO-powered RTCs, peripherals and I/O
• Automatic switching of battery backup chargers, lithium manganese coin cell batteries 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, especially for advanced application processor designs. The LP3972 is optimized for low-power handheld applications and offers 6 low-dropout, low-noise linear regulators, three DC/DC buck regulators, a backup battery charger and two GPIOs. Includes a high-speed serial interface and a separate regulator output voltage for the on/off control scheme.

Main specifications of buck regulator

• Programmable V OUT from 0.725 to 3.3V
• Efficiency up to 95%
• 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_RTC 30 mAh
• LDO1 300 mAh
• LDO2 150 mAh
• LDO3 150 mAh
• LDO4 150 mA
• LDO5 400 mA
• Differential pressure of 100 mV (typical)

apply

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