LP3971

LP3971 www.ti.com SNVS432V – JANUARY 2006 – REVISED MAY 2013 LP3971 Power Management Unit for Advanced Application Processors Check for Samples: LP3971 FEATURES 1 2 Compatible with Advanced Applications Processors Requiring DVM (Dynamic Voltage Management) Three Buck Regulators for Powering High Current Processor Functions or I/O's 6 LDO's for Powering RTC, Peripherals, and I/O's Backup Battery Charger with Automatic Switch for Lithium-Manganese Coin Cell Batteries and Super Capacitors I2C Compatible High Speed Serial Interface Software Control of Regulator Functions and Settings Precision Internal Reference Thermal Overload Protection Current Overload Protection Tiny 40-pin 5x5 mm WQFN Package KEY SPECIFICATIONS Buck Regulators – Programmable VOUT from 0.725 to 3.3V – Up to 95% Efficiency – Up to 1.6A Output Current – ±3% Output Voltage Accuracy LDO’s – Programmable VOUT of 1.0V–3.3V – ±3% output voltage accuracy – 150/300/370 mA output currents – LDO RTC 30 mA – LDO 1 300 mA – LDO 2 150 mA – LDO 3 150 mA – LDO 4 150 mA – LDO 5 370 mA – 100 mV (typ) dropout APPLICATIONS PDA Phones Smart Phones Personal Media Players Digital Cameras Application Processors – Marvell PXA – Freescale – Samsung DESCRIPTION The LP3971 is a multi-function, programmable Power Management Unit, designed especially for advanced application processors. The LP3971 is optimized for low power handheld applications and provides 6 low dropout, low noise linear regulato...