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| Product Brief, 31-Jan-08 Advanced InformationAll Information Subject to Change ACT8798 Six Channel Integrated Power Management IC for Handheld Portable Equipment FEATURES * Multiple Patents Pending * Six Integrated Regulators - 1.2A PWM Step-Down DC/DC - 1.2A PWM Step-Down DC/DC - 750mA PWM Step-Down DC/DC - 250mA Low Noise LDO - 250mA Low Noise LDO - 250mA Low Noise LDO GENERAL DESCRIPTION The patent-pending ACT8798 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. 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 1.2A, 1.2A and 750mA, respectively. REG4, REG5 and REG6 are low noise, high PSRR linear regulators that are capable of supplying up to 250mA each. The ACT8798 is available in a tiny 4mm x 4mm 24-pin Thin-QFN package that is just 0.75mm thin. * I2CTM Compatible Serial Interface - Programmable Output Voltages - Configurable Operating Modes * Minimal External Components * 4x4mm, Thin-QFN (TQFN44-24) Package - Only 0.75mm Height - RoHS Compliant APPLICATIONS * Portable Devices and PDAs * Wireless Handhelds * DMB Enabled Devices * GPS Receivers, etc. SYSTEM BLOCK DIAGRAM Battery nMSTR nRSTO PWRHLD ON3 SCL SDA OUT1 1.1V to 4.4V Up to 1.2A System Control REG2 Step-Down DC/DC OUT2 1.1V to 4.4V Up to 1.2A OUT3 1.1V to 4.4V Up to 750mA OUT4 0.645V to 3.7V Up to 250mA OUT5 1.4V to 3.7V Up to 250mA OUT6 1.4V to 3.7V Up to 250mA REG3 Step-Down DC/DC REG4 LDO REG1 Step-Down DC/DC REG5 LDO ACT8798 Active REG6 LDO PMU TM Innovative Products. Active Solutions. ActivePMU is a trademark of Active-Semi. I2CTM is a trademark of Philips Electronics. TM -1- www.active-semi.com Copyright (c) 2008 Active-Semi, Inc. Product Brief, 31-Jan-08 ACT8798 Capability 1.2A 1.2A 750mA PRODUCT OPTIONS Block REG1 REG2 REG3 REG4 REG5 REG6 Function Step-Down DC/DC Step-Down DC/DC Step-Down DC/DC LDO LDO LDO Output Voltage 1.1V to 4.4V 0.645V to 3.7V 1.4V to 3.7V 250mA 250mA 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 ACT8798 SCL SDA Serial Interface REG1 SW1 To Battery OUT1 OUT1 GP12 INL nMSTR PUSH BUTTON VP2 To Battery REG2 SW2 OUT2 OUT2 GP12 OUT2 nRSTO VP3 To Battery REG3 SW3 OUT3 OUT3 GP3 PWRHLD System Control ON3 INL To Battery REFBP Reference LDO REG4 OUT4 OUT4 GA LDO REG5 OUT5 OUT5 LDO REG6 OUT6 OUT6 Innovative Products. Active Solutions. -2- www.active-semi.com Copyright (c) 2008 Active-Semi, Inc. |
Price & Availability of ACT8798
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