LP3971SQ-R285

• 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

LP3971 is a versatile, programmable power management unit, especially for advanced application processor designs. The LP3971 is optimized for low-power handheld applications and offers six low-dropout, low-noise linear regulators, three DC/DC magnetic 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
• 150/300/370 mA output current
• LDO RTC 30 mA
• LDO 1 300 mA
• LDO 2 150 mA
• LDO 3 150 mA
• LDO 4 150 mA
• LDO 5 370 mA
• Differential pressure of 100 mV (typical)

apply

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