LP8725TLE-B

LP8725 PRODUCT BRIEF October 14, 2010 LP8725 PRODUCT BRIEF Power Management Unit for Application/Multimedia Processors and Sub-Systems General Description This device is a multi-function, programmable Power Management Unit (PMU), optimized for sub block power solutions. This device integrates two highly efficient 600 mA step-down DC/DC converters configurable up to 800 mA load with Dynamic Voltage Scaling (DVS) through an I2C, two low noise analog LDOs, three digital LDOs for up to 300 mA load current each, two Low Input Low Output (LILO) regulators and an I2C-compatible serial interface to allow a host controller access to the internal control registers. The device also features programmable power-on sequencing. LDO regulators provide high PSRR and low noise ideally suited for supplying power to both analog and digital loads. The device can be configured either as a Sub_PMU for modules (for example, camera/multimedia modules) or as a stand-alone PMU that powers the processor itself. “Notice: This document is not a datasheet. For more information regarding this product or to order samples please contact your local National Semiconductor sales office or visit http://www.national.com/support/dir.html. Features ■ Two High Efficiency Step-Down DC/DC Convertors, ■ ■ ■ ■ ■ ■ IOUT = 600 mA, with a 4MHz switching frequency using small 1µH inductors, with options up to 800 mA. Three digital LDOs for up to 300 mA load current each Two low-noise analog 300 mA LDOs Two low-input low output regulators, IOUT = 300 mA I2C-compatible interface for the controlling of internal registers Adjustable startup sequence through I2C or configuration Thermal shutdown protection Key Specifications ■ 190 mV typ. Dropout Voltage on digital LDOs @ 300 mA ■ 2% typ. Output Voltage Accuracy on digital and analog LDOs ■ 10 µVrms Output Noise on analog LDOs ■ ±2% typ. Output Voltage Bucks up to 93% efficiency ■ 30-bump micro SMD package (0.5 mm pitch) Applications ■ Multi-media Processors ■ Portable Handheld Products © 2010 National Semiconductor Corporation 300980 www.national.com LP8725 PRODUCT BRIEF Typical Application (SUB-PMU) 30098001 www.national.com 2 LP8725 PRODUCT BRIEF Typical Application (PMU) 30098005 3 www.national.com LP8725 PRODUCT BRIEF Ordering Information Order Number LP8725TLE LP8725TLX LP8725TLE-A LP8725TLX-A LP8725TLE-B LP8725TLX-B LP8725TLE-D LP8725TLX-D Package Type micro SMD micro SMD micro SMD micro SMD micro SMD micro SMD micro SMD micro SMD Product Identification 8725 8725 V023 V023 V028 V028 V031 V031 Supplied as 250 Tape & Reel 3000 Tape & Reel 250 Tape & Reel 3000 Tape & Reel 250 Tape & Reel 3000 Tape & Reel 250 Tape & Reel 3000 Tape & Reel The LP8725-A, LP8725-B and LP8725–D variants offer alternative startup default configurations to the standard LP8725 part (see Start-up Sequences and Default Output Voltages). www.national.com 4 LP8725 PRODUCT BRIEF Physical Dimensions inches (millimeters) unless otherwise noted 30-bump micro SMD Package NS Package Number TLA30D1A X1 = 2.568 mm ±0.030 mm X2 = 2.974 mm ±0.030 mm X3 = 0.600 mm ±0.075 mm 5 www.national.com LP8725 PRODUCT BRIEF Notes For more National Semiconductor product information and proven design tools, visit the following Web sites at: www.national.com Products Amplifiers Audio Clock and Timing Data Converters Interface LVDS Power Management Switching Regulators LDOs LED Lighting Voltage References PowerWise® Solutions Temperature Sensors PLL/VCO www.national.com/amplifiers www.national.com/audio www.national.com/timing www.national.com/adc www.national.com/interface www.national.com/lvds www.national.com/power www.national.com/switchers www.national.com/ldo www.national.com/led www.national.com/vref www.national.com/powerwise WEBENCH® Tools App Notes Reference Designs Samples Eval Boards Packaging Green Compliance Distributors Quality and Reliability Feedback/Support Design Made Easy Design Support www.national.com/webench www.national.com/appnotes www.national.com/refdesigns www.national.com/samples www.national.com/evalboards www.national.com/packaging www.national.com/quality/green www.national.com/contacts www.national.com/quality www.national.com/feedback www.national.com/easy www.national.com/solutions www.national.com/milaero www.national.com/solarmagic www.national.com/training Applications & Markets Mil/Aero PowerWise® Design University Serial Digital Interface (SDI) www.national.com/sdi www.national.com/wireless www.national.com/tempsensors SolarMagic™ THE CONTENTS OF THIS DOCUMENT ARE PROVIDED IN CONNECTION WITH NATIONAL SEMICONDUCTOR CORPORATION (“NATIONAL”) PRODUCTS. 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