ACT8710 Four Channel Integrated Power Management Handheld Portabl

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ACT8710 Four Channel Integrated Power Management Handheld Portabl

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Product Brief, 03-Feb-08 Advanced InformationAll Information Subject Change
ACT8710
Four Channel Integrated Power Management Handheld Portable Equipment FEATURES
Multiple Patents Pending Battery Charger with Integrated MOSFET
ON/OFF Control Status Indication
GENERAL DESCRIPTION
patent-pending ACT8710 complete, cost effective, highly efficient ActivePMUpower management solution that ideal wide range portable handheld equipment. This device integrates step-down DC/DC converters, step-up DC/DC converter with over-voltage protection (OVP) full-featured linear-mode battery charger into single, thin, space-saving package. Serial Interface provides programmability DC/DC converters battery charger. REG1 REG2 fixed-frequency, current-mode step-down DC/DC converters that optimized high efficiency capable supplying 350mA 550mA, respectively. REG3 fixed-frequency step-up converter that safely efficiently biases string seven white-LEDs backlighting. battery charger incorporates internal power MOSFET thermally regulated charging single-cell battery. DC/DC converters' output voltage programmable controllable interface. ACT8710 available tiny 24-pin Thin-QFN package that just 0.75mm thin.
Three Integrated Regulators
350mA Step-Down DC/DC 550mA Step-Down DC/DC Step-Up DC/DC with WLED Bias
I2CCompatible Serial Interface
Programmable Output Voltages Configurable Operating Modes
Minimal External Components 4x4mm, Thin-QFN (TQFN44-24) Package
Only 0.75mm Height RoHS Compliant
APPLICATIONS
Portable Devices PDAs Digital Media Players Battery Operated Devices Receivers, etc.
SYSTEM BLOCK DIAGRAM
CHGLEV nSTAT
Single Cell Battery Charger
Battery Programmable
REG1
nMSTR nIRQ nRSTO System Control Step-Down DC/DC
OUT1 1.1V 4.4V 350mA OUT2 1.1V 4.4V 550mA
REG2
Step-Down DC/DC
REG3
ACT8710
Active
Step-Up DC/DC
OUT3 WLED Bias
Innovative Products. Active Solutions.
ActivePMU trademark Active-Semi. I2Cis trademark Philips Electronics.
www.active-semi.com Copyright 2008 Active-Semi, Inc.
Product Brief, 03-Feb-08
ACT8710
PRODUCT OPTIONS
Block
CHGR REG1 REG2 REG3
Function
Battery Charger Step-Down DC/DC Step-Down DC/DC Step-Up DC/DC
Output Voltage
4.20V (4.10V 4.40V available) Programmable 1.1V 4.4V Programmable 27.5V
Capability
Programmable 350mA 550mA WLEDs
Output voltage options detailed this table represent standard voltage options, available samples production orders. Contact Active-Semi more information regarding semi-custom output voltage combinations. Contact factory additional available products custom requirements.
FUNCTIONAL BLOCK DIAGRAM
VSYS
Active-Semi
BODY VSYS CONTROL
ACT8710
Battery
CURRENT SENSE VOLTAGE SENSE
Adaptor 4.3V
VINUVLO
CHGLEV FLOAT
4.0V Charge Control
PRECONDITION
2.9V
THERMAL REGULATION
110°C Battery
OUT2 nRSTO REG1 OUT1 OUT1 GP12 Serial Interface
VSYS nMSTR PUSH BUTTON OUT2 nIRQ System Control
Battery
REG2
OUT2 OUT2 GP12
REG3 OVP3
Battery OUT3
Innovative Products. Active Solutions.
www.active-semi.com Copyright 2008 Active-Semi, Inc.

ACT8710 Four Channel Integrated Power Management Handheld Portabl

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