參數(shù)資料
型號(hào)： bq2060
廠商： Benchmark Technology Group
英文描述： SBS v1.1-Compliant Gas Gauge IC(Gas Gauge芯片)
中文描述： 銀紫荊星章1.1版兼容的氣體計(jì)IC（電量監(jiān)測計(jì)芯片）
文件頁數(shù)： 6/45頁
文件大?。?/td> 457K
代理商： BQ2060
information in the RM register is accessible through the
communications ports and is also represented through
theLED display.
The FullChargeCapacity() (FCC) register represents the
last measured full discharge of the battery. It is used as
the battery’s full-charge reference for relative capacity
indication. The bq2060 updates FCC when the battery
undergoes a qualified discharge from nearly full to a low
battery level. FCC is accessible through the serial com-
munications ports.
The Discharge Count Register (DCR) is a non-accessible
register that only tracks discharge of the battery. The
bq2060 uses the DCR register to update the FCC regis-
ter if the battery undergoes a qualified discharge from
nearly full to a low battery level.
bq2060 learns the true discharge capacity of the battery
under system useconditions.
In this way, the
Main Gas Gauge Registers
RemainingCapacity() (RM)
RM represents the remaining capacity in the battery.
The bq2060 computes RM in either mAh or 10mWh de-
pending on theselected mode.
On initialization, the bq2060 sets RM to 0. RM counts
up during charge to a maximum value of FCC and down
during discharge and self-discharge to 0. In addition to
charge and self-discharge compensation, the bq2060 cal-
ibrates RM at three low-battery-voltage thresholds,
E DV 2, E DV 1, and E DV 0 and three programmable
midrange thresholds VOC25, VOC50, and VOC75. This
provides a voltage-based calibration totheRM counter.
DesignCapacity() (DC)
The DC is the user-specified battery full capacity. It is
calculated from
Pack Capacity
EE 0x3a–0x3b and is rep-
resented in mAh or 10mWh. It also represents the
full-battery referencefor theabsolutedisplay mode.
FullChargeCapacity() (FCC)
FCC is the last measured discharge capacity of the bat-
tery. It is represented in either mAh or 10mWh depend-
ing on the selected mode. On initialization, the bq2060
sets FCC to the value stored in
Last Measured Dis-
charge
E E 0x38–0x39. During subsequent discharges,
the bq2060 updates FCC with the last measured dis-
charge capacity of the battery. The last measured dis-
charge of the battery is based on the value in the DCR
register after a qualified discharge occurs.
dated, the bq2060 writes the new F CC value to
EEPROM in mAh to
Last Measured Discharge
.
represents the full battery reference for the relative dis-
play modeand relativestateof chargecalculations.
Once up-
FCC
Discharge Count Register (DCR)
The DCR register counts up during discharge, independ-
ent of RM. DCR can continue tocount even after RM has
counted down to 0. Prior to RM = 0, discharge activity,
light discharge estimation and self-discharge increment
DCR. After RM = 0, only discharge activity increments
DCR. The bq2060 initializes DCR to FCC – RM when
RM is within twice the programmed value in
Near Full
EE 0x55. The DCR initial value of FCC – RM is reduced
by FCC/128 if SC = 0 (bit 2 in Control Mode) and is not
reduced if SC = 1. RMDCR stops counting when the bat-
tery voltagereaches theEDV2 threshold on discharge.
Capacity Learning (FCC Update) and Qualified
Discharge
The bq2060 updates FCC with an amount based on the
value in DCR if a qualified discharge occurs. The new
value for FCC equals the DCR value plus the program-
mable nearly full and low battery levels, according to
thefollowing equation.
FCC (New) = DCR + (FCC *
Battery Low%
)
(1)
where
Battery Low %
= value stored in EE 0x54
A qualified discharge occurs if the battery discharges
from RM
≥
FCC -
Near Full
* 2 to the EDV2 voltage
threshold with thefollowing conditions:
No valid charge activity occurs during the discharge
period.
A valid charge is defined as an input of
10mAh intothebattery.
No more than 256mAh of self-discharge and/or light
discharge estimation occurs during the discharge
period.
The temperature does not drop below 5
°
C during the
dischargeperiod.
The battery voltage reaches the EDV2 threshold
during the discharge period and the voltage was
greater than the EDV2 threshold minus 256mV when
thebq2060 detected EDV2.
No midrange voltage correction occurs during the
dischargeperiod.
FCC cannot be reduced by more than 256mAh or in-
creased by more than 512mAh during any single update
cycle.
The bq2060 saves the new FCC value to the
EEPROM within 4s of being updated.
End-of-Discharge Thresholds and Capacity Cor-
rection
The bq2060 monitors the battery for three compensated
low-voltage thresholds, EDV0, EDV1, and EDV2. The
6
bq2060
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
BQ2060A 制造商:TI 制造商全稱:Texas Instruments 功能描述:SBS v1.1-Compliant Gas Gauge IC
BQ2060ADBQ 功能描述:電池管理 SBS V1.1 Compliant GG IC RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel
BQ2060ADBQG4 功能描述:電池管理 SBS V1.1 Compliant GG IC RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel
BQ2060ADBQR 功能描述:電池管理 SBS V1.1 Compliant RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel
BQ2060ADBQRG4 功能描述:電池管理 SBS V1.1 Compliant RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel
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