ACT8342 Product Brief, 29-Feb-08 Advanced Information―All Information Subject to Change Three-Channel Integrated Power Management IC for Handheld Portable Equipment FEATURES GENERAL DESCRIPTION • Multiple Patents Pending • Three Integrated Regulators The patent-pending ACT8342 is a complete, cost effective, highly-efficient ActivePMUTM power management solution that is ideal for a wide range of portable handheld equipment. This device integrates one PWM step-down DC/DC converter and two low noise, low dropout linear regulators (LDOs) in a single, thin, space-saving package. This device is ideal for a wide range of portable handheld equipment that can benefit from the advantages of ActivePMU technology but does not require a high level of integration. − 350mA PWM Step-Down DC/DC − 80mA Low Noise LDO − 150mA Low Noise LDO • Independent Enable/Disable Control • Minimal External Components • 3×3mm, Thin-QFN (TQFN33-16) Package − Only 0.75mm Height − RoHS Compliant REG1 is a fixed-frequency, current-mode PWM step-down DC/DC converter that is optimized for high efficiency and is capable of supplying up to 350mA output current. REG1’s output is available in a variety of factory-preset output voltage options, and an adjustable output voltage mode is also available. REG2, REG3 are low noise, high PSRR linear regulators that are capable of supplying up to 80mA, and 150mA, respectively. APPLICATIONS • Portable Devices and PDAs • MP3/MP4 Players • Wireless Handhelds • GPS Receivers, etc. The ACT8342 is available in a tiny 3mm × 3mm 16-pin Thin-QFN package that is just 0.75mm thin. SYSTEM BLOCK DIAGRAM REG1 Step-Down DC/DC Battery nRSTO OUT1 Adjustable, or 1.2V to 3.3V Up to 350mA nMSTR nIRQ ON1 REG2 System Control LDO OUT2 1.4V to 3.7V Up to 80mA ON2 REG3 ON3 LDO ACT8342 PMU Active Innovative PowerTM ActivePMU TM is a trademark of Active-Semi. OUT3 1.4V to 3.7V Up to 150mA TM -1- www.active-semi.com Copyright © 2008 Active-Semi, Inc. ACT8342 Product Brief, 29-Feb-08 PRODUCT OPTIONS Block Function Output Voltagec Capabilityd REG1 Step-Down DC/DC Adjustable, 1.2V, 1.5V, 1.8V, 2.5V, 3.0V, or 3.3V 350mA REG2 LDO REG3 LDO 80mA 1.4V to 3.7V 150mA c: Output voltage options detailed in this table represent standard voltage options, and are available for samples or production orders. Contact Active-Semi for more information regarding semi-custom output voltage combinations. d: Contact factory for additional available products or custom requirements. FUNCTIONAL BLOCK DIAGRAM OUT2 Active-Semi nRSTO ACT8342 VP1 To Battery INL PUSH BUTTON SW1 REG1 nMSTR OUT1 FB1 OUT2 GP1 nIRQ INL To Battery or OUT1 ON1 ON2 System Control ON3 REG2 LDO OUT2 REG3 LDO OUT3 REFBP Reference GA Innovative PowerTM -2- www.active-semi.com Copyright © 2008 Active-Semi, Inc.