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ACT8810 Dataheets PDF



Part Number ACT8810
Manufacturers Active-Semi
Logo Active-Semi
Description Eight Channel ActivePath Power Management IC
Datasheet ACT8810 DatasheetACT8810 Datasheet (PDF)

Active-Semi 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 ACT8810 Rev 4, 01-Oct-09 Eight Channel ActivePathTM Power Management IC GENERAL DESCRIPTION The patent-pending ACT8810 is a complete, cost effect.

  ACT8810   ACT8810



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Active-Semi 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 ACT8810 Rev 4, 01-Oct-09 Eight Channel ActivePathTM Power Management IC 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, thermallyregulated, 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 40pin Thin-QFN package that is just 0.75mm thin. • 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 SYSTEM BLOCK DIAGRAM CHG_IN CHGLEV DCCC ISET ACIN nSTAT TH BTR nPBIN nIRQ nRSTO SCL SDA ON1 ON2 ON3 VSEL Battery Programmable Up to 1A VSYS REG1 Step-Down DC/DC REG2 Step-Down DC/DC REG3 Step-Down DC/DC System Control REG4 LDO REG5 LDO OUT1 Adjustable, or 0.8V to 4.4V Up to 1.3A OUT2 Adjustable, or 0.8V to 4.4V Up to 1.0A OUT3 Adjustable, or 0.8V to 4.4V Up to 0.55A OUT4 0.9V to 3.3V Up to 360mA OUT5 0.9V to 3.3V Up to 360mA OUT6 0.9V to 3.3V Up to 30mA ActivePathTM & Single-Cell Li+ Battery Charger ACT8810 Active PMU TM REG6 RTC_LDO Innovative PowerTM ActivePMUTM and ActivePathTM are trademarks of Active-Semi. www.DataSheet4U.net 2 TM IC is a trademark of Philips Electronics. -1- www.active-semi.com Copyright © 2009 Active-Semi, Inc. Active-Semi TABLE OF CONTENTS ACT8810 Rev 4, 01-Oct-09 GENERAL INFORMATION ..........................................................................................P. 01 Functional Block Diagram ...................................................................................................... p. 03 Ordering Information .............................................................................................................. p. 04 Pin Configuration .................................................................................................................... p. 04 Pin Descriptions ..................................................................................................................... p. 05 Absolute Maximum Ratings.................................................................................................... p. 07 SYSTEM MANAGEMENT ...........................................................................................P. 08 Register Descriptions ............................................................................................................. p. 08 I2C Interface Electrical Characteristics ................................................................................... p. 09 Electrical Characteristics ........................................................................................................ p. 10 Register Descriptions ............................................................................................................. p. 11 Typical Performance Characteristics...................................................................................... p. 12 Functional Description ............................................................................................................ p. 13 STEP-DOWN DC/DC CONVERTERS ..........................................................................P. 17 Electrical Characteristics ........................................................................................................ p. 17 Typical Performance Characteristics...................................................................................... p. 20 Register Descriptions ............................................................................................................. p. 22.


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