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ACT8810QJ3EB-T Datasheet(PDF) 1 Page - Active-Semi, Inc |
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ACT8810QJ3EB-T Datasheet(HTML) 1 Page - Active-Semi, Inc |
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1 / 52 page  Innovative PowerTM - 1 - www.active-semi.com Copyright © 2009 Active-Semi, Inc. ActivePMUTM and ActivePathTM are trademarks of Active-Semi. I2CTM is a trademark of Philips Electronics. Rev 4, 01-Oct-09 ACT8810 SYSTEM BLOCK DIAGRAM Active-Semi Eight Channel ActivePathTM Power Management IC FEATURES • ActivePathTM Li+ Charger with System Power Selection • Six Integrated Regulators − 1.3A High Efficiency Step-Down DC/DC − 1.0A High Efficiency Step-Down DC/DC − 0.55A High Efficiency Step-Down DC/DC − 2×360mA Low Noise, High PSRR LDOs − 30mA RTC LDO / Backup Battery Charger • I2CTM Serial Interface • Minimal External Components • Compatible with USB or AC-Adapter Charging • 5mm × 5mm, Thin-QFN (TQFN55-40) Package − Only 0.75mm Height − RoHS Compliant APPLICATIONS • Personal Navigation Devices • Portable Media Players • Smart Phones GENERAL DESCRIPTION The patent-pending ACT8810 is a complete, cost effect tive, highly-efficient ActivePMUTM power management solution that is ideal for a wide range of high performance portable handheld applications such as personal navigation devices (PNDs). This device integrates the ActivePathTM complete battery charging and management system with six power supply channels. The ActivePath architecture automatically selects the best available input supply for the system. If the external input source is not present or the system load current is more than the input source can provide, the ActivePath supplies additional current from the battery to the system. The charger is a complete, thermally- regulated, stand-alone single-cell linear Li+ charger that incorporates an internal power MOSFET. REG1, REG2, and REG3 are three independent, fixed-frequency, current-mode step-down DC/DC converters that output 1.3A, 1.0A, and 0.55A, respectively. REG4 and REG5 are high performance, low-noise, low-dropout linear regulators that output up to 360mA each. REG6 is a RTC LDO that outputs up to 30mA for a real time clock. Finally, an I2C serial interface provides programmability for the DC/DC converters and LDOs. The ACT8810 is available in a tiny 5mm x 5mm 40- pin Thin-QFN package that is just 0.75mm thin. OUT4 0.9V to 3.3V Up to 360mA OUT3 Adjustable, or 0.8V to 4.4V Up to 0.55A System Control OUT1 Adjustable, or 0.8V to 4.4V Up to 1.3A OUT5 0.9V to 3.3V Up to 360mA nIRQ ON1 ON3 nPBIN ActivePathTM & Single-Cell Li+ Battery Charger Battery Programmable Up to 1A VSYS CHG_IN CHGLEV DCCC OUT2 Adjustable, or 0.8V to 4.4V Up to 1.0A nSTAT ACIN nRSTO SCL SDA VSEL ISET OUT6 0.9V to 3.3V Up to 30mA REG6 RTC_LDO ACT8810 TM PMU PMU Active REG1 Step-Down DC/DC REG2 Step-Down DC/DC REG3 Step-Down DC/DC REG4 LDO REG5 LDO ON2 TH BTR |
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