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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(jì)IC，帶有SMBus接口（電量監(jiān)測計(jì)芯片（帶的SMBus接口）） |
| 文件頁數(shù)： | 23/32頁 |
| 文件大?。?/td> | 256K |
| 代理商： | BQ2945 |
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bq2945
Description
EEPROM
Address
EEPROM
Hex Contents
Example
Values
Notes
Low
Byte
High
Byte
Low
Byte
High
Byte
EEPROM
length
EEPROMcheck
1
Remainingtime
alarm
Remaining
capacity
alarm
Reserved
Initial charg-
ing current
Charging
voltage
Battery status
0x00
64
100
Must be equal to 0x64.
0x01
5b
91
Must be equal to 0x5b.
0x02
0x03
0a
00
10 minutes Sets the low time alarm level.
0x04
0x05
f0
00
240mAh
Sets the low capacity alarm level.
0x06
0x07
00
00
0
Not currently used by the bq2945.
0x08
0x09
60
09
2400mA
Sets the initial charge request.
0x0a
0x0b
d8
40
16600mV
Used to set the fast-charge voltage for the Smart
Charger.
Initializes BatteryStatus.
Contains the charge cycle count and can be set to zero
for a new battery.
0x0c
0x0d
80
00
128
Cycle count
0x0e
0x0f
00
00
0
Design
capacity
Design
voltage
Specification
information
Manufacturer
date
Serial number
Fast-charging
current
Maintenance
charge
current
Reserved
0x10
0x11
60
09
2400mAh
Nominal battery pack capacity.
0x12
0x13
40
38
14400mV
Nominal battery pack voltage.
0x14
0x15
10
00
1.0
Default value for this register in a 1.0 part.
0x16
0x17
a1
20
May 1, 1996
= 8353
10002
Packed per the ManufactureDate description.
0x18
0x19
12
27
Contains the optional pack serial number.
Used to set the fast-charge current for the Smart
Charger.
0x1a
0x1b
60
09
2400mA
0x1c
0x1d
00
00
0mA
Contains the desired maintenance current after fast-
charge termination by the bq2945.
0x1e
0x1f
00
00
0
Must be programmed to 0x00.
Represents the following: 3.2/sense resistor in ohms.
It is used by the bq2945 to scale the measured voltage
values on the SR pin in mA and mAh. This register
also compensates for variations in the reported sense
resistor value.
Current inte-
gration gain
1
0x2c
0x2d
40
00
3.2/0.05
Note:
1.
Can be adjusted to calibrate the battery pack.
Table 10. Example Register Contents
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| BR-B21V1-12V | Metal Oxide Resistor; Series:MP800; Resistance:15ohm; Resistance Tolerance:+/- 1 %; Power Rating:20W; Temperature Coefficient:-20 to +50 ppm/ C; Terminal Type:Radial Leaded; Package/Case:2-TO-220; Voltage Rating:300V |
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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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