參數(shù)資料
型號： 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IC（電量監(jiān)測計芯片）
文件頁數(shù)： 34/45頁
文件大?。?/td> 457K
代理商： BQ2060
Midrange Capacity Corrections
Three voltage-based thresholds,
VOC25
EE 0x6c–0x6d,
VOC50
EE 0x6e–0x6f, and
VOC75
EE 0x70–0x71, are
used to test the accuracy of the R M based on
open-circuit pack voltages. These thresholds are stored
in the EEPROM in 2’s complement of voltage in mV.
The values represent the open-circuit battery voltage at
which the battery capacity should correspond to the as-
sociated stateof chargefor each threshold.
Self-Discharge Rate
The nominal self-discharge rate, %PERDAY (% per day),
is programmed in an 8-bit value
Self-Discharge Rate
EE
0x53 by thefollowing relation:
Self
DischargeRate
2s
52.73
%PERDAY
(13)
Light Load Current
The amount of light load current in mA, ILEAK, used
for compensation is stored in
Light Discharge Current
in
EE 0x2bas follows:
Light Disch
Current
=
ILEAK
1024
45
arge
(14)
ILEAK is between 0.044 and 11.2mA.
Charge Efficiency
The bq2060 uses four charge-efficiency factors to com-
pensate for charge acceptance. These factors are coded
in
Charge E fficiency
,
E fficiency Reduction Rate
,
E ffi-
ciency Drop Off Percentage,
and
Efficiency Temperature
Compensation
.
The bq2060 applies the efficiency factor, EFF%, when
RelativeStateOfCharge() is less than the value coded in
E fficiency Drop Off Percentage
E E 0x64. When
RelativeStateOfCharge() is greater than or equal to the
value coded in
Efficiency Drop Off Percentage
, EFF%
and ERR% determine the charge efficiency rate. ERR%
defines the percent efficiency reduction per percentage
point of RelativeStateOfCharge() over
E fficiency Drop
Off Percentage
. EFF% is encoded in
High Charge Effi-
ciency
EE 0x4d according tothefollowing equation:
ChargeEfficiency
= 10
(EFF% - 74.5)
(15)
where
74.5
≤
EFF%
≤ 1
00
ERR% is encoded in
Efficiency Reduction Rate
EE 0x65
according tothefollowing equation
Efficiency Reduction Rate
=ERR%
0.0125
(16)
where
0
≤
ERR%
≤
3.19
The
Efficiency Drop Off
Percentage is stored in 2’s com-
plement of percent.
The bq2060 also adjusts the efficiency factors for temper-
ature. TEFF% defines the percent efficiency reduction per
degree C over 25
°
C. TEFF% is encoded in
Efficiency Tem-
perature Compensation
EE 0x63 according to the follow-
ing equation
(17)
Efficiency TemperatureCompensation
=TEFF% 1.6
0.0125
where
0
≤
TEFF%
≤
1.99
The bq2060 applies all four charge-compensation factors
when the CHEM bit in
Pack Configuration
is not set de-
noting a nickel pack.
(18)
Effective Charge Efficiency Reduction (nickel only)
= ERR%[RSOC() – EFF%] + TEFF%[T( C) –
where
RSOC()
≥
EFF% and T
≥ 25°
C
If CHEM is set denoting a Li-Ion pack, the bq2060 ap-
plies only the value coded in
High Charge Efficiency
and
makes noother adjustments for chargeacceptance.
Charge Limits and Termination
Techniques
Charging Voltage
The 16-bit value,
Charging Voltage
EE 0x0a-0x0b pro-
grams the ChargingVoltage() value broadcast to a Smart
Charger. It is also sets the base value for determining
overvoltage conditions during charging and voltage com-
pliance during a constant-voltage charging methodology.
It is stored in mV.
Overvoltage
The 8-bit value,
Overvoltage Margin
EE 0x48, sets the
limit over ChargingVoltage() that is to be considered as
an overvoltage charge-suspension condition. The voltage
in mV above the ChargingVoltage(), VOVM, that should
34
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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