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參數(shù)資料
| 型號： | bq2945 |
| 廠商： | Benchmark Technology Group |
| 英文描述： | Gas Gauge IC with SMBus Interface(Gas Gauge芯片（帶SMBus 接口）) |
| 中文描述： | 氣體計IC，帶有SMBus接口（電量監(jiān)測計芯片（帶的SMBus接口）） |
| 文件頁數(shù)： | 18/32頁 |
| 文件大?。?/td> | 256K |
| 代理商： | BQ2945 |
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End of Discharge VoltageF (0x3f)
This read-only word returns the final end-of-discharge
voltage programmed for the pack.
Output:
Returns battery final end-of-discharge voltage pro-
grammed in EEPROM in mV.
two’s complemented unsigned integer.
FLAGS1&2() (0x2f)
This read-only register returns an unsigned integer rep-
resenting the internal status registers of the bq2945.
The MSB represents FLAGS2, and the LSB represents
FLAGS1. See Table 6 for the bit description for FLAGS1
and FLAGS2.
FLAGS2
The
Display Mode
flag (DMODE), bit 7 determines
whether the bq2945 displays Relative or Absolute capac-
ity.
The DMODE values are:
Where DMODE is:
0
Selects Absolute display
1
Selects Relative display
Bit 6 reflects the high/low state of CP2.
The
Chemistry
flag (CHM), bit 5, selects Li-Ion or nickel
compensation factors.
The CHM values are:
Where CHM is:
0
Selects Nickel
1
Selects Li-Ion
Bit 4, the
Charge Control
flag (CC), determines whether
a bq2945-based charge termination will set RM to a
user-defined programmable full charge capacity.
The CC values are:
Where CC is:
0
RM is not modified on valid bq2945
charge termination
1
RM is set to a programmable percentage of
the FCC when a valid bq2945 charge termi-
nation occurs
Bit 3 is reserved.
Bit 2, the
Overvoltage
flag (OV), is set when the bq2945
detects a pack voltage 5% greater than the programmed
charging voltage. This bit is cleared when the pack volt-
age falls 5% below the programmed charging voltage.
The OV values are:
Where OV is:
0
Voltage < 1.05
ChargingVoltage
1
Voltage
≥
1.05
ChargingVoltage
Bit 1, the
Low Temperature Fault
flag (LTF), is set when
temperature < 0°C and cleared when temperature >
5°C.
The LTF values are:
Where LTF is:
0
Temperature > 5°C
1
Temperature < 0°C
Bit 0, the
Overcurrent
flag (OC), is set when the average
current is 25% greater than the programmed charging
current. If the charging current is programmed less than
1024mA, overcurrent is set if the average current is
256mA greater than the programmed charging current.
18
bq2945
FLAGS2 Bits
4
-
7
-
6
-
5
-
3
-
2
1
-
0
-
OV
FLAGS2 Bits
4
CC
7
-
6
-
5
-
3
-
2
-
1
-
0
-
FLAGS2 Bits
4
-
7
6
-
5
-
3
-
2
-
1
-
0
-
DMODE
FLAGS2 Bits
4
-
7
-
6
-
5
3
-
2
-
1
-
0
-
CHM
FLAGS2 Bits
4
-
7
-
6
-
5
-
3
-
2
-
1
0
-
LTF
FLAGS2 Bits
4
-
7
-
6
5
-
3
-
2
-
1
-
0
-
CP2DI
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| BQ294502 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Overvoltage Protection for 2-Series and 3-Series Cell Li-Ion Batteries |
| BQ294502DRVR | 功能描述:電池管理 Overvltg Prot Device 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 |
| BQ294502DRVT | 功能描述:電池管理 Overvltg Prot Device 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 |
| BQ294502EVM-033 | 功能描述:電源管理IC開發(fā)工具 bq294502 Eval Mod RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
| BQ294504 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Overvoltage Protection for 2-Series and 3-Series Cell Li-Ion Batteries |
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