LP8725 PRODUCT BRIEF Power Management Unit for Application/Multimedia Processors and Sub-Systems General Description Features 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. ■ 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 October 14, 2010 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 Package Type Product Identification Supplied as LP8725TLE micro SMD 8725 250 Tape & Reel LP8725TLX micro SMD 8725 3000 Tape & Reel LP8725TLE-A micro SMD V023 250 Tape & Reel LP8725TLX-A micro SMD V023 3000 Tape & Reel LP8725TLE-B micro SMD V028 250 Tape & Reel LP8725TLX-B micro SMD V028 3000 Tape & Reel LP8725TLE-D micro SMD V031 250 Tape & Reel LP8725TLX-D micro SMD V031 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 Design Support Amplifiers www.national.com/amplifiers WEBENCH® Tools www.national.com/webench Audio www.national.com/audio App Notes www.national.com/appnotes Clock and Timing www.national.com/timing Reference Designs www.national.com/refdesigns Data Converters www.national.com/adc Samples www.national.com/samples Interface www.national.com/interface Eval Boards www.national.com/evalboards LVDS www.national.com/lvds Packaging www.national.com/packaging Power Management www.national.com/power Green Compliance www.national.com/quality/green Switching Regulators www.national.com/switchers Distributors www.national.com/contacts LDOs www.national.com/ldo Quality and Reliability www.national.com/quality LED Lighting www.national.com/led Feedback/Support www.national.com/feedback Voltage References www.national.com/vref Design Made Easy www.national.com/easy www.national.com/powerwise Applications & Markets www.national.com/solutions Mil/Aero www.national.com/milaero PowerWise® Solutions Serial Digital Interface (SDI) www.national.com/sdi Temperature Sensors www.national.com/tempsensors SolarMagic™ www.national.com/solarmagic PLL/VCO www.national.com/wireless www.national.com/training PowerWise® Design University THE CONTENTS OF THIS DOCUMENT ARE PROVIDED IN CONNECTION WITH NATIONAL SEMICONDUCTOR CORPORATION (“NATIONAL”) PRODUCTS. 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