Datasheet > CW2017BAAD

CW2017BAAD

更新时间： 2023-12-06 20:10:33

品牌	Logo	应用领域
赛微 - CELLWISE		/
页数	文件大小	规格书
2页	536K
描述
温度检测 SOC 充电cycle数低电量报警 SOC/温度报警

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CW2017BAAD 数据手册

www.cellwise-semi.com

CW2017-DS V1.3

CW2017

Fuel Gauge IC with ID Measurement Function

General Description

Features



System-Side or Pack-Side Fuel Gauging

The CW2017 is an ultra-compact, system-side or

pack-side, sensing resistor free, fuel gauging IC for

Lithium-ion(Li+) based batteries in handheld and

portable devices.

±3% Maximum SOC Measurement Error

14-bit Sigma-Delta ADC for Cell Voltage,

Temperature and ID Resistor Measurement

Configurable Interrupt for Battery SOC Change,

High or Low Battery Temperature



The CW2017 tracks the Li+ battery’s operation

conditions and performs state-of-the-art algorithm

to calculate the relative State-of-Charge (SOC) of

very different battery chemistry systems (LiCoOx,

polymer Li-ion, LiMnOx etc.).



No Offset Accumulation During Life Time

No Full-to-Empty Battery Learning Cycle

No Sense Resistor Required

Patented “FastCali” Fuel Gauging Algorithm

External Thermistor or Host Reported

Temperature

The CW2017 includes a 14-bit Sigma-Delta ADC,

a precision voltage reference and build-in NTC

bias circuits. The IC allows users to eliminate the

expensive current sensing resistor which usually

occupies very large PCB area. The IC sends out

the interrupt alarm signal if the battery SOC level

or the temperature that the chip measured or the

host reported reaches the pre-programmed

threshold.



ID Resistor Measurement Supported

Ultra-low Power Consumption



Normal Mode 17A

Sleep Mode 0.6A





General I²C Interface

Tiny, Lead(Pb)-Free, TDFN 2mm x 2mm-8L

Package

The CW2017 integrates the ID resistor sensing

feature. It can also be used as an alternative

sensing port.

Applications

The CW2017 uses a 2-wire I²C compatible serial

interface that operates in standard (100kHz) mode

or fast (400kHz) mode.



Smartphone

Tablet PCs

Handheld and Portable Devices

Lithium-ion or Lithium Polymer Battery Packs

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