ACT  -  系列元器件数据手册
ACT8332  -  Three-Channel Integrated Power Management IC for Handheld Portable Equipment  -  Active Semi  -  电源管理

FEATURES
• Multiple Patents Pending
• Three Integrated Regulators
− 350mA PWM Step-Down DC/DC
− 360mA Low Noise LDO
− 360mA Low Noise LDO
• Independent Enable/Disable Control
• Minimal External Components
• 3x3mm, Thin-DFN (TDFN33-10) Package
− Only 0.75mm Height
− RoHS Compliant
APPLICATIONS
• Portable Devices and PDAs
• MP3/MP4 Players
• Wireless Handhelds
• GPS Receivers
GENERAL DESCRIPTION
The patent-pending ACT8332 is a complete, costefficient ActivePMUTM power management solution that is ideal for a wide range of portable handheld equipment. This device integrates a PWM stepdown DC/DC converter and two low-noise, lowdropout linear regulators (LDOs) into 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 ActivePMUTM technology but does not require a high level of integration.
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. REG1’s output is available in a variety of factory-preset output voltage, and an adjustable output voltage mode is also available. REG2 and REG3 are low noise LDOs that are available in a variety of fixed output voltage options and are each capable of supplying up to 360mA.
The ACT8332 is available in a tiny 3mm x 3mm 10-pin Thin-DFN package that is just 0.75mm thin.