LP3972SQ-SMP1

• Compatible with advanced application processors requiring DVM (Dynamic Voltage Management)
• A triple buck regulator is used to drive high-current processor functions or I/O
• 6 LDO powered RTC, peripherals and I/O
• Automatic switching of backup battery charger, lithium manganese button battery and supercapacitor
• 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 5x5mm 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 linear regulators, three DC/DC magnetic buck regulators, a backup battery charger and two GPIOs. Includes a high-speed serial interface and on/off control scheme, separate regulator output voltage.

Main specifications Buck regulator

• From 0.725 to 3.3V_ProgrammableV OUT
• Up to 95% efficiency
• Up to 1.6A output current
• ± 3% output voltage accuracy

• Programmable V_OUTis 1.0V - 3.3V
• ± 3% output voltage accuracy
• 150/300/400 mA output current
• LDO_RTC 30 mAh
• LDO1 300 mAh
• LDO2 150 mAh
• LDO3 150 mAh
• LDO4 150 mA
• LDO5 400 mA
• 100 mV dropout voltage (typical)

apply

• PDA phones
• Smartphones
• Personal media player
• Digital cameras
• Application processor
• Marvell's PXA
• Freescale
• Samsung