Document
ACT8937A
Rev 1, 22-Oct-12
Advanced PMU for Samsung S5PC100, S5PC110 and S5PV210 Processors
FEATURES
• Optimized for Samsung S5PC100, S5PC110 and
S5PV210 Processors
GENERAL DESCRIPTION
The ACT8937A is a complete, cost effective, highlyefficient ActivePMUTM power management solution, optimized for the unique power, voltagesequencing, and control requirements of the Samsung S5PC100, S5PC110 and S5PV210 processors. 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 1100mA of output current, while the third supports up to 1200mA. All four low-dropout linear regulators are highperformance, low-noise regulators that supply up to 150mA, 150mA, 250mA, and 250mA, respectively. The ACT8937A is available in a compact, Pb-Free and RoHS-compliant TQFN55-40 package.
• • • • • • •
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 5×5mm TQFN55-40 Package − 0.75mm Package Height − Pb-Free and RoHS Compliant
TYPICAL APPLICATION DIAGRAM
Innovative PowerTM
ActivePMUTM and ActivePathTM are trademarks of Active-Semi. I2CTM is a trademark of NXP.
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www.active-semi.com Copyright © 2012 Active-Semi, Inc.
Free Datasheet http://www.datasheet4u.com/
ACT8937A
Rev 1, 22-Oct-12
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 I2C Interface Electrical Characteristics ........................................................................................................ p. 08 Global Register Map .................................................................................................................................... p. 09 Register and Bit Descriptions ...................................................................................................................... p. 10 System Control Electrical Characteristics.................................................................................................... p. 15 Step-Down DC/DC Electrical Characteristics .............................................................................................. p. 16 Low-Noise LDO Electrical Characteristics ................................................................................................... p. 17 ActivePathTM Charger Electrical Characteristics.......................................................................................... p. 18 Typical Performance Characteristics ........................................................................................................... p. 20 System control information .......................................................................................................................... p. 27 Interfacing with the Samsung S5PV210 ..........................................................................................p. 27 Control Signals ................................................................................................................................. p. 28 Push-Button Control ......................................................................................................................... p. 29 Control Sequences ........................................................................................................................... p. 29 Functional Description ................................................................................................................................. p. 33 I2C Interface ..................................................................................................................................... p. 33 Voltage Monitor and Interrupt........................................................