ACT8796 ACTIVE-SEMI | Alldatasheet
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Technical content
Innovative Products. Active Solutions. - 1 - www.active-semi.com Copyright © 2008 Active-Semi, Inc. ActivePMUTM is a trademark of Active-Semi. I2CTM is a trademark of Philips Electronics. ACT8796 Product Brief, 31-Jan-08 Advanced Information―All Information Subject to Change Six Channel Integrated Power Management IC for Handheld Portable Equipment SYSTEM BLOCK DIAGRAM
FEATURES
- Multiple Patents Pending
- Six Integrated Regulators − 750mA PWM Step-Down DC/DC − 750mA 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 − 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. GENERAL DESCRIPTION The patent-pending ACT8796 is a complete, cost- effective, highly-efficient ActivePMUTM power man- agement solution that is ideal for a wide range of portable handheld equipment. This device inte- grates three step-down DC/DC converters and three low dropout linear regulators (LDOs) into a single, thin, space-saving package. An I 2C Serial Interface provides prog rammability for the DC/DC converters and LDOs. REG1, REG2, and REG3 are fixed-frequency, cur- rent-mode PWM step-down DC/DC converters that are optimized for high efficiency and are capable of supplying up to 750mA, 750mA and 550mA, re- spectively. REG4, REG5 and REG6 are low noise, high PSRR linear regulators that are capable of supplying up to 250mA each. The ACT8796 is available in a tiny 4mm x 4mm 24-pin Thin-QFN package that is just 0.75mm thin. ACT8796 System Control REG2 Step-Down DC/DC REG1 Step-Down DC/DC REG3 Step-Down DC/DC REG4 LDO REG5 LDO REG6 LDO nRSTO ON3 SCL SDA Battery nMSTR PWRHLD OUT4 0.645V to 3.7V Up to 250mA OUT2 1.1V to 4.4V Up to 750mA OUT6 1.4V to 3.7V Up to 250mA OUT3 1.1V to 4.4V Up to 550mA OUT1 1.1V to 4.4V Up to 750mA OUT5 1.4V to 3.7V Up to 250mA TM PMUPMUActive
Innovative Products. Active Solutions. - 2 - www.active-semi.com Copyright © 2008 Active-Semi, Inc. Product Brief, 31-Jan-08 PRODUCT OPTIONS FUNCTIONAL BLOCK DIAGRAM c: Output voltage options detailed in this table represent st andard voltage options, and are available for samples or production orders. Contact Active-Semi for more information regarding semi-custom output voltage combinations. d: Contact factory for additional available products or custom requirements. Block Function Output Voltagec Capabilityd REG1 Step-Down DC/DC 750mA REG2 Step-Down DC/DC 750mA REG3 Step-Down DC/DC 550mA REG4 LDO 0.645V to 3.7V 250mA REG5 LDO 1.4V to 3.7V 250mA REG6 LDO 250mA 1.1V to 4.4V REG1REG2 VP1 VP2 GP12 GP12 SW2 SW1 PWRHLD nMSTR PUSH BUTTON nRSTO INL OUT2 OUT1 OUT2 OUT2 OUT1 LDO REG4 LDO REG5 LDO REG6 OUT4 OUT5 OUT6 INL REG3 VP3 GP3 SW3 OUT3OUT3 System Control GA ACT8796 OUT6 OUT5 OUT4 To Battery To Battery To Battery To Battery REFBP Reference SDA SCL Serial Interface ON3 Active- Semi