ACT8750

Product Brief, 09-Nov-07 Advanced Information - All Information Subject to Change ACT8750 Six Channel Integrated Power Management IC for Handheld Portable Equipment FEATURES • Multiple Patents Pending • Six Integrated Regulators − 350mA PWM Step-Down DC/DC − 550mA PWM Step-Down DC/DC − Step-Up DC/DC with OVP for WLED Bias − 150mA Low Noise LDO − 150mA Low Noise LDO − 150mA Low Noise LDO • Minimal External Components • 4x4mm, Thin-QFN (TQFN44-24) Package − Only 0.75mm Height − RoHS Compliant GENERAL DESCRIPTION The patent-pending ACT8750 is a complete, costeffective, highly-efficient ActivePMUTM power management solution that is ideal for a wide range of portable handheld equipment. This device integrates two PWM step-down DC/DC converters, one step-up DC/DC converter with over-voltage protection (OVP) for WLED bias, and three low dropout linear regulators (LDOs) into a single, thin, spacesaving package. 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. REG3 is a fixed-frequency, step-up DC/DC converter that safely and efficiently biases a string of up to seven white-LEDs for backlighting applications. The three LDOs are low noise, high PSRR linear regulators capable of supplying up to 150mA each. The ACT8750 is available in a tiny 4mm x 4mm 24-pin Thin-QFN package that is just 0.75mm thin. APPLICATIONS • Portable Devices and PDAs • Wireless Handhelds • DMB Enabled Devices • GPS Receivers, etc. SYSTEM BLOCK DIAGRAM Innovative Products. Active Solutions. ActivePMUTM is a trademark of Active-Semi. -1- www.active-semi.com Copyright © 2007 Active-Semi, Inc. ACT8750 Product Brief, 09-Nov-07 PRODUCT OPTIONS Block REG1 REG2 REG3 REG4 REG5 REG6 Function Step-Down DC/DC Step-Down DC/DC Step-Up DC/DC LDO LDO LDO Output Voltage 0.645V to 3.3V Capability 350mA 550mA Up to 27.5V Up to 7 WLEDs 150mA 1.4V to 3.7V 150mA 150mA : 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. : Contact factory for additional available products or custom requirements. FUNCTIONAL BLOCK DIAGRAM Innovative Products. Active Solutions. -2- www.active-semi.com Copyright © 2007 Active-Semi, Inc.