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LP3971

NOT RECOMMENDED FOR NEW DESIGNS

Power Management IC (PMIC) for Advanced Application Processors

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Data sheet
LP3971 is not recommended for new designs
Although this product continues to be in production to support previous designs, we don't recommend it for new designs. Consider one of these alternates:
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Similar functionality to the compared device
TPS65217 ACTIVE Power Management IC (PMIC) w/ 3 DC/DCs, 4 LDOs, linear battery charger & white LED driver PMIC for battery powered systems for Sitara™ AM335x processors.

LP3971

NOT RECOMMENDED FOR NEW DESIGNS
Data sheet Order now

Product details

Configurability Factory programmable, Software configurable Vin (min) (V) 1.74 Vin (max) (V) 5.5 Iout (max) (A) 1.6 Features Comm control, Dynamic voltage scaling, Enable, Overcurrent protection, Power good, Synchronous rectification, Thermal shutdown Iq (typ) (mA) 0.293 Rating Catalog Switching frequency (max) (kHz) 2000 Operating temperature range (°C) -40 to 125 Processor name PXA Processor supplier Marvell Shutdown current (ISD) (typ) (µA) 0.5
Configurability Factory programmable, Software configurable Vin (min) (V) 1.74 Vin (max) (V) 5.5 Iout (max) (A) 1.6 Features Comm control, Dynamic voltage scaling, Enable, Overcurrent protection, Power good, Synchronous rectification, Thermal shutdown Iq (typ) (mA) 0.293 Rating Catalog Switching frequency (max) (kHz) 2000 Operating temperature range (°C) -40 to 125 Processor name PXA Processor supplier Marvell Shutdown current (ISD) (typ) (µA) 0.5
WQFN (RSB) 40 25 mm² 5 x 5
  • 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 currentsLDO RTC 30 mALDO 1 300 mALDO 2 150 mALDO 3 150 mALDO 4 150 mALDO 5 370 mA
    • 100 mV (typ) dropout

All trademarks are the property of their respective owners.

  • 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 currentsLDO RTC 30 mALDO 1 300 mALDO 2 150 mALDO 3 150 mALDO 4 150 mALDO 5 370 mA
    • 100 mV (typ) dropout

All trademarks are the property of their respective owners.

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 regulators, three DC/DC magnetic buck regulators, a back-up battery charger and two GPIO’s. A high speed serial interface is included to program individual regulator output voltages as well as on/off control.

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 regulators, three DC/DC magnetic buck regulators, a back-up battery charger and two GPIO’s. A high speed serial interface is included to program individual regulator output voltages as well as on/off control.
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* Data sheet LP3971 Power Management Unit for Advanced Application Processors datasheet (Rev. V) 03 May 2013
EVM User's guide AN-1620 LP3971 USB Evaluation Board (Rev. A) 30 Apr 2013
User guide LP3971 Smart Power Reference Design - 8 outputs User Guide 27 Jan 2012

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