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Numéro de référence | ACT8891 | ||
Description | Advanced PMU | ||
Fabricant | Active-Semi | ||
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1 Page
® ACT8891
Product Brief, 05-Dec-11
Advanced PMU for Rockchip RK2918 Processor
FEATURES
• Optimized for Rockchip RK2918 Processor
• Three Step-Down DC/DC Converters
• Four Low-Dropout Linear Regulators
• I2CTM Serial Interface
• Advanced Enable/Disable Sequencing Controller
• Minimal External Components
• Tiny 4×4mm TQFN44-32 Package
− 0.75mm Package Height
− Pb-Free and RoHS Compliant
GENERAL DESCRIPTION
The ACT8891 is a complete, cost effective, highly-
efficient ActivePMUTM power management solution,
optimized for the unique power, voltage-
sequencing, and control requirements of the
Rockchip RK2918 processor.
This device features three step-down DC/DC
converters and four low-noise, low-dropout linear
regulators.
The three DC/DC converters utilize a high-
efficiency, fixed-frequency (2MHz), current-mode
PWM control architecture that requires a minimum
number of external components. Two DC/DCs are
capable of supplying up to 1150mA of output
current, while the third supports up to 1300mA. All
four low-dropout linear regulators are high-
performance, low-noise, regulators that support up
to 320mA.
The ACT8891 is available in a compact, Pb-Free
and RoHS-compliant TQFN44-32 package.
SYSTEM BLOCK DIAGRAM
Innovative PowerTM
ActivePMUTM is a trademark of Active-Semi.
I2CTM is a trademark of NXP.
-1-
www.active-semi.com
Copyright © 2011 Active-Semi, Inc.
Free Datasheet http://www.datasheet4u.com/
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Pages | Pages 2 | ||
Télécharger | [ ACT8891 ] |
No | Description détaillée | Fabricant |
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