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ACT5810

Nine Channel PMU for Mobile Phones

Active-Semi, Inc 

ACT5810

Product Brief, 28-Aug-07

Advanced Information - All Information Subject to Change

Nine Channel PMU for Mobile Phones

FEATURES

• Multiple Patents Pending

• Li+ Battery Charger with Integrated MOSFET

− ON/OFF Control

• Charger Current Monitor Output

• Six Low Noise LDOs

− 3.00V at 250mA

− 1.80V at 150mA

− 3.00V at 80mA

− 3.00V at 80mA

− 3.00V at 80mA

− 3.00V at 150mA

− Programmable LDO Output Voltages

• Two N-channel Open Drain Switches

• I2CTM Compatible Serial Interface

− Configurable Operating Modes

• AC OK (nACOK) and RESET (nRST) Outputs

• 5×5mm, QFN (QFN55-32) Package

− RoHS Compliant

APPLICATIONS

• GSM or CDMA Mobile Phones

GENERAL DESCRIPTION

The patent-pending ACT5810 is a complete, inte-

grated power management solution that is ideal for

CDMA and GSM mobile phones. This device inte-

grates a linear Li+ battery charger with an internal

power MOSFET, six low dropout linear regulators

(LDOs), a reset output, and two N-Channel open

drain switches. An I2C Serial Interface is utilized to

provide programmable LDO and battery charger

functionality.

The ACT5810 features six low-noise LDOs and are

divided into two sets of three: one set optimized for

minimum quiescent supply current, and the other

optimized for high PSRR, achieving more than

60dB PSRR at frequencies up to 10kHz. All LDO

output voltages may be programmed as well as en-

abled and disabled via the I2C interface.

The charger is a complete, thermally-regulated,

stand-alone single-cell linear mode charger for Li+

batteries. It incorporates an internal power MOS-

FET for constant-current/constant-voltage control.

The battery regulation voltage has 0.5% accuracy,

and features programmable charger currents in the

90mA to 1A range as well as a variety of other func-

tions including a complete charge-management

state machine and charge safety timers.

SYSTEM BLOCK DIAGRAM

Innovative Products. Active Solutions.

-1-

ActivePMUTM is a trademark of Active-Semi.

I2CTM is a trademark of Philips Electronics.

www.active-semi.com

Copyright © 2007 Active-Semi, Inc.

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