ACT8939
ACT8939 Datasheet
ACT8939
| Part | Datasheet |
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ACT8939 |
ACT8939 (pdf) |
| Related Parts | Information |
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EA8939 |
EA8939 |
| PDF Datasheet Preview |
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| ACT8939 Product Brief, 15-Aug-13 Advanced PMU for Freescale i.MX53 Processor • Three Step-Down DC/DC Converters • Four Low-Dropout Linear Regulators • Integrated ActivePathTM Charger • I2CTM Serial Interface • Advanced Enable/Disable Sequencing Controller • Minimal External Components • Tiny 5x5mm TQFN55-40 Package − 0.75mm Package Height − Pb-Free and RoHS Compliant The ACT8939 is a complete, cost effective, highlyefficient ActivePMUTM power management solution, optimized for the unique power, voltagesequencing, and control requirements of the Freescale i.MX53 processor. It is ideal for a wide range of high performance portable handheld applications such as tablet or pad devices. This device integrates the ActivePathTM complete battery charging and management system with seven power supply channels. This device features three step-down DC/DC converters and four low-noise, low-dropout linear regulators, along with a complete battery charging solution featuring the advanced ActivePathTM system-power selection function. The three DC/DC converters utilize a highefficiency, fixed-frequency 2MHz , current-mode PWM control architecture that requires a minimum number of external components. Two DC/DCs are capable of supplying up to 1150mA of output current, while the third supports up to 1300mA. All four low-dropout linear regulators are highperformance, low-noise regulators that supply up to 320mA of output current. The ACT8939 is available in a compact, Pb-Free and RoHS-compliant TQFN55-40 package. TYPICAL APPLICATION DIAGRAM Innovative PowerTM ActivePMUTM and ActivePathTM are trademarks of Active-Semi. I2CTM is a trademark of NXP. Copyright 2013 Active-Semi, Inc. ACT8939 Product Brief, 15-Aug-13 PRODUCT OPTIONS Block REG1 REG2 REG3 REG4 REG5 REG6 REG7 Function Step-Down DC/DC Step-Down DC/DC Step-Down DC/DC Output Voltage 0.6V to 3.9V 0.6V to 3.9V 0.6V to 3.9V 0.6V to 3.9V 0.6V to 3.9V 0.6V to 3.9V 0.6V to 3.9V Capability 1150mA 1300mA 320mA FUNCTIONAL BLOCK DIAGRAM Optional AC Adaptor USB 4.35V to 6V CHGIN ACIN VSYS nSTAT BODY SWITCH ActivePath Control CHGLEV ISET OUT7 nRSTO nPBIN PUSH BUTTON OUT7 nPBSTAT OUT7 nIRQ VSYS PWRHLD |
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