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RT9428WSC датащи(PDF) 3 Page - Richtek Technology Corporation

номер детали RT9428WSC
подробное описание детали  Host-Side Single Cell Lithium Battery Gauge
PDF  14 Pages
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производитель  RICHTEK [Richtek Technology Corporation]
домашняя страница  http://www.richtek.com
Logo RICHTEK - Richtek Technology Corporation

RT9428WSC датащи(HTML) 3 Page - Richtek Technology Corporation

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RT9428
3
DS9428-01
October 2014
www.richtek.com
©
Copyright
2014 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
Function Block Diagram
Operation
12-bit ADC
Analog-to-Digital Converter. It converts the voltage input
from VBAT pin to target value.
Battery OCV Model
Parameters for battery characteristics.
Voltaic Gauge Algorithm
The RT9428 calculates and determines that the embedded
Fuel Gauge calculates and determines the Li+ battery
SOC according to battery voltage only.
The algorithm estimates the increasing or decreasing SOC
by an iteration model according to the difference between
battery voltage and the battery OCV. The dynamic voltaic
information can effectively emulate the Li+ battery behavior
and determines the SOC (%), but can't report capacity (mAh).
Controller
The controller takes care of the control flow of system
routine, ADC measurement flow, algorithm calculation and
alert determined.
I
2C Interface
The fuel gauge registers can be accessed through the I
2C
Interface.
I
2
C
Interface
SDA
GND
SCL
Controller
Voltaic Gauge
Algorithm
Battery
OCV Model
ALERT
12-bit
ADC
VBAT
VDD
QS
TEST



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