ACT8325 Datasheet | Active-Semi

FEATURES - Multiple Patents Pending - Two Integrated Step-Down DC/DC Converters - REG1: 350m A - REG2: 550m A Rev0, 13-May-08 Dual PWM Step-Down DC/DCs in TDFN33 GENERAL DESCRIPTION The patent-pending ACT8325 integrates two stepdown DC/DCs into a single, thin, space-saving package to provide a cost-effective, highly-efficient Active PMUTM power management solution. This device is ideal for a wide range of portable handheld equipment that can benefit from the advantages of Active PMU technology but do not require a high level of integration. 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 350m A and 550m A, respectively. Both outputs are available in a wide range of factorypreset output voltage options, and an adjustable output voltage mode is also available. The ACT8325 is available in a tiny 3mm x 3mm 10-pin Thin-DFN package that is just 0.75mm thin. - 180° Out-of-Phase Operation - Reduces Input Capacitor Requirements - - - - Fixed or Adjustable Output Voltage Options Independent Enable/Disable Control Minimal External ponents 3x3mm, Thin-DFN (TDFN33-10) Package - Only 0.75mm Height - Ro HS-pliant APPLICATIONS - Portable Devices and PDAs - MP3/MP4 Players - Wireless Handhelds - GPS Receivers .. SYSTEM BLOCK DIAGRAM REG1 Battery Step-Down DC/DC OUT1 Adjustable, or 1.2V to 3.3V Up to 350m A ON1 ON2 System Control REG2 Step-Down DC/DC OUT2 Adjustable, or 1.2V to 3.3V Up to 550m A Active Innovative Power TM Active PMUTM is a trademark of Active-Semi. -1- .active-semi. Copyright © 2008 Active-Semi, Inc. Active-Semi FUNCTIONAL BLOCK DIAGRAM Rev0,...