Datasheet > CW2217BAAC

CW2217BAAC

更新时间： 2023-12-06 20:11:25

品牌	Logo	应用领域
赛微 - CELLWISE		/
页数	文件大小	规格书
2页	547K
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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CW2217BAAC 数据手册

www.cellwise-semi.com

CW2217B-DS V1.1

CW2217B

Fuel Gauge IC with Low to 1mOhm Current Sensing

General Description

Features



System-Side or Pack-Side Fuel Gauging

The CW2217B is an ultra-compact, system-side or

pack-side fuel gauging IC for Lithium-ion based

batteries used in wearable and portable devices.

The CW2217B 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.

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



Battery Voltage, Current, Temperature, SOC,

and Cycle Count Report

The CW2217B 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.



No Offset Accumulation during Life Time

No Full-To-Empty Calibration Cycles Required

Interrupt for SOC, Temperature and 1% SOC

Change



Ultra-low Power Consumption



Active Mode 12A



Shutdown Mode 0.5A



General I²C Control Interface

Lead-Free, WLCSP-9 Package

The CW2217B 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 CW2217B use a 2-wire I²C compatible serial

interface that operates in standard mode or fast

mode. The IC is available in Lead-free 0.5mm pitch,

1.58mmx1.53mm, 9-ball WLCSP package.

Applications



Smart Phone

Tablets

Wearables

Low-Power Handheld Devices

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