ACT8702 Four Channel Integrated Power Management Handheld Portabl

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ACT8702 Four Channel Integrated Power Management Handheld Portabl

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Product Brief, 09-Nov-07 Advanced Information Information Subject Change
ACT8702
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 ACT8702 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 full-featured linear-mode battery charger into single, thin, space-saving package. 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 DC/DC converter that generates wide variety regulated-voltage applications such audio, motor, power. battery charger incorporates internal power MOSFET thermally regulated charging single-cell battery. ACT8702 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
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 100mA/500mA
REG1
Step-Down DC/DC
OUT1 1.2V 3.3V 350mA OUT2 1.2V 3.3V 550mA
nMSTR nIRQ nRSTO System Control
REG2
Step-Down DC/DC
REG3
ACT8702
Step-Up DC/DC
OUT3
Innovative Products. Active Solutions.
ActivePMUis trademark Active-Semi.
www.active-semi.com Copyright 2007 Active-Semi, Inc.
Product Brief, 09-Nov-07
ACT8702
Capability
100mA/500mA 350mA
PRODUCT OPTIONS
Block
CHGR REG1 REG2 REG3
Function
Battery Charger Step-Down DC/DC
Output Voltage
4.20V (4.10V 4.30V available) 1.2V, 1.5V, 1.8V, 2.5V, 3.0V, 3.3V
Step-Down DC/DC Step-Up DC/DC
550mA 1.5W
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
BODY VSYS CONTROL
ACT8702
Battery
Adaptor
4.3V
VINUVLO
CURRENT SENSE VOLTAGE SENSE PRECONDITION
nSTAT
4.0V
CHARGE STATUS
Charge Control
2.9V
THERMAL REGULATION
OUT2 CHGLEV FLOAT
110°C Battery
OUT2 nRSTO REG1 OUT1 OUT1 GP12 VSYS nMSTR Battery
REG2
PUSH BUTTON OUT2 nIRQ
OUT2 OUT2 GP12
System Control REG3 OUT3 Battery OUT3
Innovative Products. Active Solutions.
www.active-semi.com Copyright 2007 Active-Semi, Inc.

ACT8702 Four Channel Integrated Power Management Handheld Portabl

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