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| Product Brief, 12-Mar-09 Advanced InformationAll Information Subject to Change Eight Channel ActivePathTM Power Management IC FEATURES Eight Functions Integrated Into One Package: ActivePath Li+ Charger and System Power Selection 1.3A High Efficiency Step-Down DC/DC 1.0A High Efficiency Step-Down DC/DC 0.55A High Efficiency Step-Down DC/DC 360mA Low Noise, High PSRR LDOs 360mA Low Noise, High PSRR LDOs 30mA RTC LDO / Backup Battery Charger I2CTM Serial Interface Minimal External Components TM 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. Tiny 5mm x 5mm 40-pin Thin-QFN package that is just 0.75mm thin. Compatible with USB or AC-Adapter Charging 5mm x 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 nSTAT0 nSTAT1 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 Pb Pb-free ACT8810 Active PMU TM REG6 RTC_LDO Innovative PowerTM ActivePMUTM and ActivePathTM are trademarks of Active-Semi. I2CTM is a trademark of Philips Electronics. -1- www.active-semi.com Copyright (c) 2009 Active-Semi, Inc. Product Brief, 12-Mar-09 ACT8810 PRODUCT OPTIONS Block ActivePath CHGR REG1 REG2 REG3 REG4 REG5 REG6 Function System Power Selection Battery Charger Step-Down DC/DC Step-Down DC/DC Step-Down DC/DC LDO LDO RTC LDO Output Voltage 4.6V 4.20V (4.10V to 4.30V available) Adjustable, or 0.8V to 4.4V Capability Up to 2.4A Programmable up to 1A 1.3A 1.0A 0.55A 360mA 0.9V to 3.3V 360mA 30mA : Output voltage options detailed in this table represent standard voltage options, and are available for samples or production orders. Contact Active-Semi for more information regarding semi-custom output voltage combinations. : Contact factory for additional available products or custom requirements. FUNCTIONAL BLOCK DIAGRAM (Optional) AC Adaptor USB BODY SWITCH CHG_IN Up to 12V DCCC BODY SWITCH ACT8810 VSYS System Supply BAT ACIN VSYS nSTAT0 VSYS nSTAT1 CHARGE STATUS CHARGE STATUS Li+ Battery + ActivePath Control CURRENT SENSE VOLTAGE SENSE PRECONDITION THERMAL REGULATION TH BTR 2.9V VP1 110C SW1 REG1 OUT1 OUT1 GP1 VP2 To VSYS ISET VSYS CHGLEV OUT1 nRSTO Charge Control To VSYS VSYS REG2 nPBIN PUSH BUTTON OUT1 nIRQ SW2 OUT2 OUT2 GP2 VP3 To VSYS SW3 REG3 SCL SDA ON1 ON2 ON3 VSEL REFBP Reference GA EP REG4 LDO REG5 LDO REG6 RTC_LDO OUT3 OUT3 GP3 INL OUT4 OUT4 OUT5 OUT5 OUT6 OUT6 System Control To VSYS Innovative PowerTM -2- www.active-semi.com Copyright (c) 2009 Active-Semi, Inc. |
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