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LP3972

NOT RECOMMENDED FOR NEW DESIGNS

Power Management IC (PMIC) for Advanced Application Processors

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Data sheet
LP3972 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.

LP3972

NOT RECOMMENDED FOR NEW DESIGNS
Data sheet Order now

Product details

Configurability Factory programmable, Software configurable Vin (min) (V) 2.7 Vin (max) (V) 5.5 Iout (max) (A) 1.6 Features Comm control, Dynamic voltage scaling, Enable, Overcurrent protection, Power good, Power sequencing, Synchronous rectification, Thermal shutdown, UVLO adjustable Iq (typ) (mA) 0.29 Rating Catalog Switching frequency (max) (kHz) 2000 Operating temperature range (°C) -40 to 125 Processor name PXA Processor supplier Marvell
Configurability Factory programmable, Software configurable Vin (min) (V) 2.7 Vin (max) (V) 5.5 Iout (max) (A) 1.6 Features Comm control, Dynamic voltage scaling, Enable, Overcurrent protection, Power good, Power sequencing, Synchronous rectification, Thermal shutdown, UVLO adjustable Iq (typ) (mA) 0.29 Rating Catalog Switching frequency (max) (kHz) 2000 Operating temperature range (°C) -40 to 125 Processor name PXA Processor supplier Marvell
WQFN (RSB) 40 25 mm² 5 x 5
  • Compatible With Advanced Applications Processors Requiring Dynamic Voltage Management (DVM)
  • 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
  • Thermal and Current Overload Protections
  • Three Buck Regulators for Powering High-Current Processor Functions or I/Os
    • Programmable VOUT from 0.725 V to 3.3 V
    • Up to 95% Efficiency and 1.6-A Output Current
    • ±3% Output Voltage Accuracy
  • Six LDOs for Powering RTC, Peripherals, and I/Os
    • Programmable VOUT of 1 V to 3.3 V
    • ±3% Output Voltage Accuracy
      • LDO_RTC 30 mA
      • LDO1 300 mA
      • LDO2 150 mA
      • LDO3 150 mA
      • LDO4 150 mA
      • LDO5 400 mA
  • Compatible With Advanced Applications Processors Requiring Dynamic Voltage Management (DVM)
  • 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
  • Thermal and Current Overload Protections
  • Three Buck Regulators for Powering High-Current Processor Functions or I/Os
    • Programmable VOUT from 0.725 V to 3.3 V
    • Up to 95% Efficiency and 1.6-A Output Current
    • ±3% Output Voltage Accuracy
  • Six LDOs for Powering RTC, Peripherals, and I/Os
    • Programmable VOUT of 1 V to 3.3 V
    • ±3% Output Voltage Accuracy
      • LDO_RTC 30 mA
      • LDO1 300 mA
      • LDO2 150 mA
      • LDO3 150 mA
      • LDO4 150 mA
      • LDO5 400 mA

The LP3972 is a multi-function programmable power management unit (PMU) designed especially for advanced application processors. The LP3972 is optimized for low-power handheld applications and provides six low-dropout low-noise linear regulators, three DC-DC magnetic buck regulators, a backup battery charger, and two GPIOs. A high-speed serial interface is included to program individual regulator output voltages as well as on and off control.

For all available packages, see the orderable addendum at the end of the data sheet.

The LP3972 is a multi-function programmable power management unit (PMU) designed especially for advanced application processors. The LP3972 is optimized for low-power handheld applications and provides six low-dropout low-noise linear regulators, three DC-DC magnetic buck regulators, a backup battery charger, and two GPIOs. A high-speed serial interface is included to program individual regulator output voltages as well as on and off control.

For all available packages, see the orderable addendum at the end of the data sheet.
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Technical documentation

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* Data sheet LP3972 Power Management Unit for Advanced Application Processors datasheet (Rev. L) PDF | HTML 30 Nov 2015
EVM User's guide AN-1621 LP3972 USB Evaluation Board REV B/5x5 (Rev. A) 30 Apr 2013

Design & development

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WQFN (RSB) 40 View options
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