Electronic Components Datasheet Search
  English  ▼

Delete All
ON OFF
ALLDATASHEET.COM

X  

Preview PDF HTML

BQ2050SN-D119 Datasheet(PDF) 5 Page - List of Unclassifed Manufacturers

Part No. BQ2050SN-D119
Description  Lithium Ion Power Gauge IC
Download  21 Pages
Scroll/Zoom Zoom In 100% Zoom Out
Maker  ETC [List of Unclassifed Manufacturers]
Homepage  
Logo 

BQ2050SN-D119 Datasheet(HTML) 5 Page - List of Unclassifed Manufacturers

 
Zoom Inzoom in Zoom Outzoom out
 5 / 21 page
background image
Gas Gauge Operation
The operational overview diagram in Figure 2 illustrates
the operation of the bq2050. The bq2050 accumulates a
measure of charge and discharge currents, as well as an
estimation of self-discharge. Charge and discharge cur-
rents are temperature and rate compensated, whereas
self-discharge is only temperature compensated.
The main counter, Nominal Available Capacity (NAC),
represents the available battery capacity at any given
time.
Battery charging increments the NAC register,
while battery discharging and self-discharge decrement
the NAC register and increment the DCR (Discharge
Count Register).
The Discharge Count Register (DCR) is used to update
the Last Measured Discharge (LMD) register only if a
complete battery discharge from full to empty occurs
without any partial battery charges.
Therefore, the
bq2050 adapts its capacity determination based on the
actual conditions of discharge.
The battery's initial capacity is equal to the Pro-
grammed Full Count (PFC) shown in Table 2. Until
LMD is updated, NAC counts up to but not beyond this
threshold during subsequent charges. This approach al-
lows the gas gauge to be charger-independent and com-
patible with any type of charge regime.
1.
Last Measured Discharge (LMD) or learned
battery capacity:
LMD is the last measured discharge capacity of the
battery. On initialization (application of VCC or bat-
tery replacement), LMD = PFC. During subsequent
discharges, the LMD is updated with the latest
measured capacity in the Discharge Count Register
(DCR) representing a discharge from full to below
EDV1. A qualified discharge is necessary for a capac-
ity transfer from the DCR to the LMD register. The
LMD also serves as the 100% reference threshold
used by the relative display mode.
5
bq2050
FG205002.eps
Rate and
Temperature
Compensation
Temperature
Compensation
Charge
Current
Discharge
Current
Self-Discharge
Timer
Temperature
Translation
Nominal
Available
Charge
(NAC)
Last
Measured
Discharged
(LMD)
Discharge
Count
Register
(DCR)
<
Qualified
Transfer
+
Rate and
Temperature
Compensation
Rate and
Temperature
Compensation
Temperature Step,
Other Data
+
-
-
+
Inputs
Main Counters
and Capacity
Reference (LMD)
Outputs
Serial
Port
Compensated
Available Charge
LED Display, etc.
Figure 2. Operational Overview


Html Pages

1  2  3  4  5  6  7  8  9  10  11  12  13  14  15  16  17  18  19  20  21 


Datasheet Download



Related Electronics Part Number

Part NumberComponents DescriptionHtml ViewManufacturer
BQ2050HLow-Cost Lithium Ion Power Gauge IC 1 2 3 4 5 MoreTexas Instruments
BQ2050Lithium Ion Power Gauge™ IC 1 2 3 4 5 MoreTexas Instruments
MM1332Control of Lithium Ion Batteries Charging 1 2 3 4 Mitsumi Electronics, Corp.
M62253FPLITHIUM ION BATTERY CHARGER CONTROL IC 1 2 3 4 5 Mitsubishi Electric Semiconductor
LIR2032RECHARGEABLE LITHIUM ION BUTTON BATTERY 1 2 3 List of Unclassifed Manufacturers
LIR2450POWER STREAM LI ION BUTTON CELL LIR 2450 1 2 3 List of Unclassifed Manufacturers
BQ2054Lithium Ion Fast-Charge IC 1 2 3 4 5 MoreTexas Instruments
MM1357Control of Lithium Ion Batteries Monolithic IC 1 2 3 4 5 MoreMitsumi Electronics, Corp.
BQ2058Lithium Ion Pack Supervisor for 3- and 4-Cell Packs 1 2 3 4 5 MoreTexas Instruments
TPCS8102Lithium Ion Battery Applications Portable Equipment Applications Notebook PCs 1 2 3 4 5 MoreToshiba Semiconductor

Link URL




Privacy Policy
ALLDATASHEET.COM
Does ALLDATASHEET help your business so far?  [ DONATE ]  

About Alldatasheet   |   Advertisement   |   Datasheet Upload   |   Contact us   |   Privacy Policy   |   Alldatasheet API   |   Link Exchange   |   Manufacturer List
All Rights Reserved© Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn