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參數(shù)資料
| 型號： | DS2746 |
| 廠商： | Vishay Intertechnology,Inc. |
| 英文描述： | Low-Cost 2-Wire Battery Monitor with Ratiometric A/D Inputs |
| 中文描述： | 低成本、2線電池監(jiān)視器，提供比例A/D輸入 |
| 文件頁數(shù)： | 1/15頁 |
| 文件大?。?/td> | 289K |
| 代理商： | DS2746 |
1 of 15
REV: 122706
Note:
Some revisions of this device may incorporate deviations from published specifications known as errata. Multiple revisions of any device
may be simultaneously available through various sales channels. For information about device errata, click here:
www.maxim-ic.com/errata
.
GENERAL DESCRIPTION
The DS2746 provides system-side battery capacity
monitoring in cost-sensitive applications. Voltage,
bidirectional current, and accumulated current
measurement data is provided to the host processor
over a 2-wire interface. Offset bias and offset
blanking features greatly enhance the accuracy of
the coulomb counter. In addition, the DS2746 has
two auxiliary A/D inputs to sample the pack
identification resistor, thermistor, or other voltage
source. The results are reported as a ratiometric
fraction of the supply voltage eliminating error related
to the supply. The DS2746 reduces the total power
consumption of the measurement circuit by enabling
the resistor dividers, through the V
OUT
pin, only while
measurements are made. When the system is
inactive, a low power sleep mode reduces current
consumption while maintaining the coulomb count.
The tiny 3mm × 3mm TDFN package consumes only
9mm
2
of PCB space.
APPLICATIONS
2.5G/3G Wireless Handsets
PDA/Smartphones
Digital Still and Video Cameras
Handheld Computers and Terminals
TYPICAL OPERATING CIRCUIT
FEATURES
14-Bit Bidirectional Current Measurement
-
6.25
μ
V LSB, ±51.2mV Dynamic Range
-
416.7
μ
A LSB, ±3.4A Range (R
SNS
= 15m
Ω
)
Current Accumulation Register Resolution
-
6.25
μ
Vhr LSB, 409.6mVh Range
-
417
μ
Ahr LSB, 27.31Ah Range
11-Bit Battery Voltage Measurement
-
2.44mV LSB, 0V to 4.997V Input Range
-
±10mV Accuracy at 3.6V Input
Two 11-Bit Aux Input Voltage Measurements
-
Ratiometric Inputs Eliminate Supply Error
-
VOUT drives Dividers, Reduces Power
-
±8 LSB Accuracy
Low Power Consumption:
-
Active Current: 70
μ
A typical, 100
μ
A max
-
Sleep Current: 1
μ
A typical, 3
μ
A max
ORDERING INFORMATION
PART
TEMP RANGE
PIN-PACKAGE
10-Pin 3
mm×
3mm
TDFN
DS2746G+ in Tape-
and-Reel
DS2746G+
-40oC to +85oC
DS2746G+T&R
-40oC to +85oC
+ Denotes lead-free package.
PIN CONFIGURATION
DS2746
Low-Cost 2-Wire Battery Monitor
with Ratiometric A/D Inputs
www.maxim-ic.com
TOP VIEW
3mm
×
3mm TDFN
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS2746_07 | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:Low-Cost 2-Wire Battery Monitor with Ratiometric A/D Inputs |
| DS2746G+ | 功能描述:電池管理 2-Wire Bat Monitor w/Ratiometric A/D IN 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 |
| DS2746G+T&R | 制造商:Maxim Integrated Products 功能描述:MONITOR 2.4V 10TDFN EP - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC MON BATTERY 2-WIRE 10-TDFN |
| DS2746G+T&R | 功能描述:電池管理 2-Wire Bat Monitor w/Ratiometric A/D IN 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 |
| DS2746G+TANDR | 制造商:VISHAY 制造商全稱:Vishay Siliconix 功能描述:Low-Cost 2-Wire Battery Monitor with Ratiometric A/D Inputs |
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