ACT8325 Product Brief, 16-Nov-07 Advanced Information–All Information Subject to Change Dual PWM Step-Down DC/DCs in TDFN33 FEATURES GENERAL DESCRIPTION • Multiple Patents Pending The patent-pending ACT8325 integrates two stepdown DC/DCs into a single, thin, space-saving package to provide a cost-effective, highly-efficient ActivePMUTM power management solution. This device is ideal for a wide range of portable handheld equipment that can benefit from the advantages of ActivePMU technology but do not require a high level of integration. • Two Integrated Step-Down DC/DC Converters − REG1: 350mA − REG2: 550mA • 180° Out-of-Phase Operation − Reduces Input Capacitor Requirements • Fixed or Adjustable Output Voltage Options REG1 and REG2 are fixed-frequency, current-mode PWM step-down DC/DC converters that are optimized for high efficiency and are capable of supplying up to 350mA and 550mA, respectively. Both outputs are available in a wide range of factorypreset output voltage options, and an adjustable output voltage mode is also available. • Independent Enable/Disable Control • Minimal External Components • 3x3mm, Thin-DFN (TDFN33-10) Package − Only 0.75mm Height − RoHS-Compliant The ACT8325 is available in a tiny 3mm x 3mm 10-pin Thin-DFN package that is just 0.75mm thin. APPLICATIONS • Portable Devices and PDAs • MP3/MP4 Players • Wireless Handhelds • GPS Receivers SYSTEM BLOCK DIAGRAM Innovative Products. Active Solutions. ActivePMU TM is a trademark of Active-Semi. -1- www.active-semi.com Copyright © 2007 Active-Semi, Inc. ACT8325 Product Brief, 16-Nov-07 PRODUCT OPTIONS Block Function REG1 Step-Down DC/DC Output Voltagec Capabilityd 350mA Adjustable, 1.2V, 1.5V, 1.8V, 2.5V, 3.0V, or 3.3V REG2 Step-Down DC/DC 550mA 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 VP1 To Battery ACT8325 REG1 UVLO ON1 SW1 OUT1 FB1 ON2 GP12 VP2 REG2 To Battery GA SW2 OUT2 FB2 GP12 Innovative Products. Active Solutions. -2- www.active-semi.com Copyright © 2007 Active-Semi, Inc.