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LP3972 Datasheet(PDF) 1 Page - Texas Instruments |
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LP3972 Datasheet(HTML) 1 Page - Texas Instruments |
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1 / 59 page  LP3972 www.ti.com SNVS468J – SEPTEMBER 2006 – REVISED AUGUST 2011 Power Management Unit for Advanced Application Processors Check for Samples: LP3972 1 FEATURES 2 • Compatible With Advanced Applications • Thermal Overload Protection Processors Requiring DVM (Dynamic Voltage • Current Overload Protection Management) • Tiny 40-Pin 5x5 mm WQFN Package • Three Buck Regulators for Powering High- Current Processor Functions or I/Os APPLICATIONS • Six LDOs for Powering RTC, Peripherals, and • PDA Phones I/Os • Smart Phones • Backup Battery Charger With Automatic • Personal Media Players Switch for Lithium-Manganese Coin Cell • Digital Cameras Batteries and Super Capacitors • Application Processors • I2C Compatible High-Speed Serial Interface – Marvell PXA • Software Control of Regulator Functions and – Freescale Settings – Samsung • Precision Internal Reference DESCRIPTION The LP3972 is a multi-function programmable Power Management Unit 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 back-up 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. 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 • LDOs – Programmable VOUT of 1.0V–3.3V – ±3% output voltage accuracy – 150/300/400 mA output currents – LDO_RTC 30 mA – LDO1 300 mA – LDO2 150 mA – LDO3 150 mA – LDO4 150 mA – LDO5 400 mA – 100 mV (typ) dropout 1 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. 2 All trademarks are the property of their respective owners. PRODUCTION DATA information is current as of publication date. Copyright © 2006–2011, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
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