ACT8946A Datasheet, PDF (1/37 Pages) Active-Semi, Inc – Advanced PMU for Hisilicon Processors

ACT8946AQJ203-T
Rev 1.0, 08-Jul-16
Advanced PMU for Hisilicon Processors
FEATURES
 Three Step-Down DC/DC Converters
 Four Low-Dropout Linear Regulators
 Integrated ActivePath Charger
 I²C^TM Serial Interface
 Advanced Enable/Disable Sequencing Controller
 Minimal External Components
 Tiny 5×5mm TQFN55-40 Package
 0.75mm Package Height
 Pb-Free and RoHS Compliant
GENERAL DESCRIPTION
The ACT8946A is a complete, cost effective, highly-
efficient power management solution, optimized for
the unique power, voltage-sequencing, and control
requirements. It is ideal for a wide range of high
performance portable handheld applications such as
human-machine interfaces, control panels, smart grid
infrastructures, network gateways, M2M systems, 2D
barcode scanners, barcode printers, machine vision
equipment, as well as home and commercial building
automations, POS terminals, medical devices and white
goods. This device integrates the complete battery
charging and management system with seven power
supply channels.
This device features three step-down DC/DC
converters and four low-noise, low-dropout linear
regulators, along with a complete battery charging
solution featuring the advanced ActivePath system-
power selection function.
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 1100mA of output
current, while the third supports up to 1200mA. All
four low-dropout linear regulators are high-
performance, low-noise regulators that supply up to
320mA of output current.
The ACT8946A is available in a compact, Pb-Free
and RoHS-compliant TQFN55-40 package.
* I²C^TM is a trademark of NXP.
TYPICAL APPLICATION DIAGRAM
CHGIN
ACT8946A
Li + Battery
+
TH
Hisilicon
Hi351X
ISET
ActivePath Charger
Control
nSTAT
CHARGE
STATUS
PWHLD
REG1 1.1V
REG2 _1.8V
REG3 1.8V
REG4 3.3V
REG5
REG6
REG7
SDA
SCL
nRSTO
nIRQ
nPBSTAT
1100mA
Vcore_D
.
1100mA
Vocre_A
.
1100mA
DDR
.
320 mA
320 mA
320 mA
320 mA
I/O
Reserved
Reserved
Reserved
TWD
TWCK
NRST
FIQ/ IRQ
GPIO
ActivePMU and ActivePath are trademarks of Active-Semi.
-1-
www.active-semi.com
Copyright © 2016 Active-Semi, Inc.