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| 型号： | DS2741N+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 1/10页 |
| 文件大小： | 0K |
| 描述： | IC MONITOR/ACCUMULATOR 14-TDFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 功能： | 燃料，电量检测计/监控器 |
| 电池化学： | 锂离子（Li-Ion） |
| 电源电压： | 2.5 V ~ 4.5 V |
| 工作温度： | -20°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 14-WFDFN 裸露焊盘 |
| 供应商设备封装： | 14-TDFN-EP（3x3） |
| 包装： | 带卷 (TR) |
19-4683; Rev 1; 7/09
Current Monitor and Accumulator with
Integrated Sense Resistor
General Description
The DS2741 current monitor/accumulator is a complete
current-sensing, measuring, and accumulation device
tailored for cost-sensitive, battery-powered applications
in a small 3mm x 3mm TDFN package. As a result, the
DS2741 is a key component in battery-charge control
and remaining capacity-estimation applications.
Through its I 2 C interface, the DS2741 gives the host
system access to current measurement and accumula-
tion registers. The 7-bit slave address is factory pro-
grammable, allowing up to 128 devices to be individually
addressed by the host system.
Features
? Complete, Low-Cost, Integrated Current-Sensing
and Accumulation Solution with Serial Digital
Output
? On-Board 38m Ω Sense Resistor
? Current Measurement:
Signed 10-Bit Bidirectional Measurement
±2.5A Dynamic Range
1% Error at +25°C
2% Error Over Temperature
? Current Accumulation:
Cell Phones
PDAs
Applications
0.247mAhr LSB
±8.1Ahrs Full-Scale Range
? Industry-Standard I 2 C Interface with Factory-
Programmable Slave Address
Battery Monitor/Rechargers
Ordering Information
? 2.5V to 4.5V Single-Supply Operation
? Low-Power Consumption:
Active Current: 60μA (typ)
PART
DS2741N+
TEMP RANGE
-20°C to +70°C
PIN-PACKAGE
14 TDFN-EP*
Sleep Current: 1μA (typ)
? -20°C to +70°C Operating Range
DS2741N+T -20°C to +70°C 14 TDFN-EP*
+Denotes a lead(Pb)-free/RoHS-compliant package.
T = Tape and reel.
*EP = Exposed pad.
Typical Operating Circuit
? 14-Pin TDFN (3mm x 3mm x 0.8mm)
Pin Configuration
TOP VIEW
RS- RS- RS- RS- SLP GND DNC
CHARGER/
LOAD
RS+
RS-
14
13
12
11
10
9
8
V CC
SLP
DS2741
DC-DC
CONVERTER
1.8V
2.2k Ω
2.2k Ω
Li +
BATTERY
DS2741
0.1 μ F
GND
SDA
SCL
MICROPROCESSOR
1
2
3
4
5
EP*
6
7
RS+ RS+ RS+ RS+ SDA SCL V CC
TDFN
*EXPOSED PAD
________________________________________________________________ Maxim Integrated Products
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
1
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS2745 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Low-Cost I2C Battery Monitor |
| DS2745_09 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Low-Cost I2C Battery Monitor |
| DS2745EVKIT+ | 功能描述:电源管理IC开发工具 DS2745 Eval Kit RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
| DS2745K | 功能描述:电源管理IC开发工具 RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
| DS2745U+ | 功能描述:电池管理 I2C Battery Monitor Fuel Gauge RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
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