ACT8780 Product Brief, 03-Feb-08 Advanced Information―All Information Subject to Change Six Channel Integrated Power Management IC for Handheld Portable Equipment FEATURES GENERAL DESCRIPTION • Multiple Patents Pending • Six Integrated Regulators The patent-pending ACT8780 is a complete, costeffective, highly-efficient ActivePMUTM power management solution that is ideal for a wide range of portable handheld equipment. This device integrates three step-down DC/DC converters and three low dropout linear regulators (LDOs) into a single, thin, space-saving package. An I2C Serial Interface provides programmability for the DC/DC converters and LDOs. − 350mA PWM Step-Down DC/DC − 550mA PWM Step-Down DC/DC − 550mA PWM Step-Down DC/DC − 250mA Low Noise LDO − 250mA Low Noise LDO − 250mA Low Noise LDO • I2CTM Compatible Serial Interface The ACT8780 also integrates two enable pins: ON1 controls REG1, REG2 and REG3, ON4 controls REG4, REG5 and REG6. − Programmable Output Voltages − Configurable Operating Modes • Minimal External Components REG1, REG2 and REG3 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, 550mA and 550mA, respectively. REG4, REG5 and REG6 are low noise, high PSRR linear regulators that are capable of supplying up to 250mA each. • 4x4mm, Thin-QFN (TQFN44-24) Package − Only 0.75mm Height − RoHS Compliant APPLICATIONS • Portable Devices and PDAs The ACT8780 is available in a tiny 4mm x 4mm 24-pin Thin-QFN package that is just 0.75mm thin. • Wireless Handhelds • DMB Enabled Devices • GPS Receivers, etc. SYSTEM BLOCK DIAGRAM REG2 Battery nMSTR nIRQ nRSTO ON1 ON4 Step-Down DC/DC REG3 System Control Step-Down DC/DC SCL SDA OUT1 1.1V to 4.4V Up to 350mA REG4 LDO REG1 REG5 Step-Down DC/DC LDO REG6 ACT8780 ActivePMU Innovative Products. Active Solutions. LDO TM -1- OUT2 1.1V to 4.4V Up to 550mA OUT3 1.1V to 4.4V Up to 550mA OUT4 1.4V to 3.7V Up to 250mA OUT5 1.4V to 3.7V Up to 250mA OUT6 1.4V to 3.7V Up to 250mA www.active-semi.com TM ActivePMU is a trademark of Active-Semi. I2CTM is a trademark of Philips Electronics. Copyright © 2008 Active-Semi, Inc. ACT8780 Product Brief, 03-Feb-08 PRODUCT OPTIONS Block Function Output Voltage Capability REG1 Step-Down DC/DC REG2 Step-Down DC/DC REG3 Step-Down DC/DC 550mA REG4 LDO 250mA REG5 LDO REG6 LDO 350mA 1.1V to 4.4V 550mA 250mA 1.4V to 3.7V 250mA : 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 VP1 To Battery ACT8780 REG1 SCL Serial Interface SDA SW1 OUT1 OUT1 GP12 INL VP2 To Battery nMSTR SW2 REG2 PUSH BUTTON OUT2 OUT2 OUT2 nIRQ GP12 VP3 OUT2 To Battery nRSTO REG3 SW3 ON1 OUT3 System Control OUT3 GP3 ON4 INL LDO REG4 To Battery OUT4 OUT4 REFBP Reference LDO REG5 GA LDO REG6 Innovative Products. Active Solutions. -2- OUT5 OUT5 OUT6 OUT6 www.active-semi.com Copyright © 2008 Active-Semi, Inc.