ACT8935 Active-Semi Product Brief, 24-Sep-09 Advanced Information―All Information Subject to Change Nine Channel ActivePathTM Power Management IC GENERAL DESCRIPTION FEATURES • ActivePath TM The ACT8935 is a complete, cost effective, highlyefficient 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 seven power supply channels. Li+ Charger with System Power Selection • Seven Integrated Regulators − 2×900mA High Efficiency Step-Down DC/DCs − 700mA High Efficiency Step-Down DC/DC − 4×150mA Low Noise, High PSRR LDOs • • • • • Flexible Interrupt Control 2 IC TM 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 singlecell Li+ charger. Serial Interface Minimal External Components Compatible with USB or AC-Adapter Charging 5x5mm, Thin-QFN (TQFN55-40) Package − Only 0.75mm Height, − RoHS Compliant REG1, REG2, and REG3 are fixed-frequency, current-mode step-down DC/DC converters. REG1 and REG3 are capable of supplying up to 900mA of output current, while REG2 supports up to 700mA. REG4, REG5, REG6, and REG7 are high performance, low-noise, low-dropout linear regulators that output up to 150mA each. Finally, an I2C serial interface provides programmability for the DC/DC converters and LDOs. APPLICATIONS • Personal Navigation Devices • Portable Media Players • Smart Phones SYSTEM BLOCK DIAGRAM Li+ Battery CHGIN ACIN CHGLEV nSTAT ISET TH TM VSYS ActivePath & Single-Cell Li+ Battery Charger REG1 Step-Down DC/DC REG2 Step-Down DC/DC PBIN PWRHLD REG3 Step-Down DC/DC PWREN EXTON nPBSTAT SCL SDA System Control nIRQ nRSTO nLBO ACT8935 ActivePMU Pb REG4 LDO OUT4 0.6V to 3.9V Up to 150mA Pb-free REG5 LDO OUT5 0.6V to 3.9V Up to 150mA REG7 LDO TM Innovative PowerTM ActivePMUTM and ActivePathTM are trademarks of Active-Semi. I2CTM is a trademark of Philips Electronics. -1- OUT2 0.6V to 3.9V Up to 700mA OUT3 0.6V to 3.9V Up to 900mA REG6 LDO LBI OUT1 0.6V to 3.9V Up to 900mA OUT6 0.6V to 3.9V Up to 150mA OUT7 0.6V to 3.9V Up to 150mA www.active-semi.com Copyright © 2009Active-Semi, Inc. ACT8935 Active-Semi Product Brief, 24-Sep-09 PRODUCT OPTIONS Block Function Output Voltagec Capabilityd ActivePath System Power Selection 4.6V Up to 2.4A CHGR Battery Charger 4.20V (4.10V to 4.30V available) Programmable up to 1A REG1 Step-Down DC/DC REG2 Step-Down DC/DC REG3 Step-Down DC/DC 900mA REG4 LDO 150mA REG5 LDO REG6 LDO REG7 LDO 900mA 0.6V to 3.9V 700mA 150mA 0.6V to 3.9V 150mA 150mA c: 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. d: Contact factory for additional available products or custom requirements. FUNCTIONAL BLOCK DIAGRAM (Optional) AC Adaptor Active-Semi BODY SWITCH ACT8935 4.3V to 7V CHGIN VSYS System Supply BAT Li+ Battery USB ACIN BODY SWITCH ActivePath Control VSYS + 100µA nSTAT CURRENT SENSE TH CHARGE STATUS VOLTAGE SENSE Charge Control CHGLEV PRECONDITION 2.9V VP1 ISET THERMAL REGULATION To VSYS 110°C SW1 REG1 nRSTO OUT1 OUT1 GP12 PBIN PUSH BUTTON nPBSTAT VP2 To VSYS REG2 SW2 nIRQ OUT2 OUT2 GP12 VP3 PWRHLD To VSYS PWREN System Control EXTON REG3 SW3 OUT3 OUT3 GP3 SCL INL BAT SDA LBI 1.2V VSYS REG4 LDO + REG5 LDO nLBO REG6 LDO REFBP REG7 LDO Reference GA Innovative PowerTM -2- To VSYS OUT4 OUT4 OUT5 OUT5 OUT6 OUT6 OUT7 OUT7 EP www.active-semi.com Copyright © 2009 Active-Semi, Inc.