- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄385186 > bq2040 (Benchmark Technology Group) Gas Gauge IC With SMBus Interface(氣體Gauge芯片（帶SMBus 接口）) PDF資料下載
參數(shù)資料
| 型號： | bq2040 |
| 廠商： | Benchmark Technology Group |
| 英文描述： | Gas Gauge IC With SMBus Interface(氣體Gauge芯片（帶SMBus 接口）) |
| 中文描述： | 氣體計IC，帶有SMBus接口（氣體計芯片（帶的SMBus接口）） |
| 文件頁數(shù)： | 3/32頁 |
| 文件大?。?/td> | 189K |
| 代理商： | BQ2040 |
第1頁第2頁當(dāng)前第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁
Functional Description
General Operation
The bq2040 determines battery capacity by monitoring
the amount of charge put into or removed from a re-
chargeable battery.
The bq2040 measures discharge
and charge currents, estimates self-discharge, and
monitors the battery for low-battery voltage thresholds.
The charge is measured by monitoring the voltage
across a small-value series sense resistor between the
battery's negative terminal and ground. The available
battery charge is determined by monitoring this voltage
over time and correcting the measurement for the envi-
ronmental and operating conditions.
Figure 1 shows a typical battery pack application of the
bq2040 using the LED capacity display, the serial port,
and an external EEPROM for battery pack program-
ming information. The bq2040 must be configured and
calibrated for the battery-specific information to ensure
proper operation. Table 1 outlines the configuration in-
formation that must be programmed in the EEPROM.
An internal temperature sensor eliminates the need
for an external thermistor—reducing cost and compo-
nents.
An internal, temperature-compensated time-
base eliminates the need for an external resonator,
further reducing cost and components. The entire cir-
cuit in Figure 1 can occupy less than
34
square inch of
board space.
3
bq2040
VCC
ESCL
ESDA
LED1
LED2
LED3
VSS
VOUT
REF
SMBC
SMBD
PSTAT
SB
SR
DISP
bq2040
2040LED.eps
301K
499K
698K
BSS138
BSS138
2N7002
100K
100K
100K
100K
100K
100K
100K
86.5K
604K
806K
604K
499K
806K
499K
604K
909K
BSS138
BSS138
2N7002
2N7002
2N7002
2
3
4
R5
R4
Q1
R11
No. of Cells
Chart 1
For bq2040 With No D8
L
N
6
8
9
10
12
499K
698K
806K
909K
909K
(Optional)
(Optional)
Figure 1. Battery Pack Application Diagram—LED Display
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| bq2050H | Low-Cost Lithium Ion Power Gauge IC(低價格鋰離子電源氣體Gauge芯片) |
| bq2050 | Lithium Ion Power Gauge IC(鋰離子電源Gause 芯片) |
| bq2052 | Gas Gauge IC for Lithium Primary Cells(Gas Gauge 芯片（用于鋰電池）) |
| bq2060 | SBS v1.1-Compliant Gas Gauge IC(Gas Gauge芯片) |
| bq2092 | Gas Gauge IC with SMBus-Like Interface(Gas Gauge芯片（帶SMBus 接口）) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| BQ2040EVM-001 | 功能描述:電源管理IC開發(fā)工具 Eval Kit for NiMH 10.8V 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 |
| BQ2040SN | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Gas Gauge IC With SMBus Interface |
| BQ2040SN | 制造商:Texas Instruments 功能描述:BATTERY CHARGE MONITOR SMD 2040 |
| BQ2040SN-C408 | 功能描述:電池管理 Multi-Chemistry SBS 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 |
| BQ2040SN-C408 | 制造商:Texas Instruments 功能描述:Battery Management IC |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。