Datasheet > CW2217BAAD

CW2217BAAD

更新时间： 2024-11-11 14:55:43

品牌	Logo	应用领域
赛微 - CELLWISE		/
页数	文件大小	规格书
2页	803K
描述
温度检测 SOC 充电cycle数 SOH 低电量报警 SOC/温度报警

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CW2217BAAD 数据手册

www.cellwise-semi.com

CW2217BAAD-DS V1.1

CW2217BAAD

Fuel Gauge IC with Current Sensing

General Description

Features



System-Side or Pack-Side Fuel Gauging

High C-Rate Charging Compliance

High precision ADCs for Voltage, Current and

Temperature Measurement

High Side or Low Side Current Sensing

Support Low to 1mOhm Sense Resistor

External Thermistor or Host Reported

Temperature

The CW2217 is an ultra-compact, system-side or

pack-side fuel gauging IC for Lithium-ion based

batteries used in wearable and portable devices.

The CW2217 tracks battery operating conditions

and performs state-of-the-art algorithm to calculate

the State-of-Charge (SOC) of various battery

chemistry systems, including LiCoOx, polymer Li-

ion and LiMnOx etc.



Battery Voltage, Current, Temperature, SOC,

and Cycle Count Report

No Offset Accumulation during Life Time

No Full-To-Empty Calibration Cycles Required

Interrupt for SOC, Temperature and 1% SOC

Change

The CW2217 includes two high precision ADCs,

voltage reference circuits and build-in NTC

thermistor bias circuits. It continually monitors the

battery voltage and temperature and measures the

current flow through the sense resistor. All the

measurements and the battery characterization

data are utilized by the IC embedded FastCali

algorithm and accurate battery SOC is reported

and refreshed in a wide variety of operating

conditions.

The CW2217 also provides alarm functions. When

SOC or temperature reaches the pre-programmed

threshold, the relevant interrupt will be generated to

alert the host MCU.

The CW2217 use a 2-wire I²C compatible serial

interface that operates in standard mode or fast

mode. The CW2217BAAD is available in lead-free

2.5mmx4.0mm, 12-lead DFN package.



Ultra-low Power Consumption



Active Mode 12µA



Shutdown Mode 0.5µA



General I²C Control Interface

Lead-Free, DFN-12 Package

Applications



Power Banks

Tablets and Laptops

Power Tools

Li+ Battery Pack

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