Datasheet > MAX14920

MAX14920

更新时间： 2024-02-18 21:15:15

品牌	Logo	应用领域
美信 - MAXIM		电池
页数	文件大小	规格书
29页	1702K
描述
High-Accuracy 12-/16-Cell Measurement AFEs

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中文翻译

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技术参数
数据手册

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MAX14920 技术参数

是否无铅：	不含铅	是否Rohs认证：	符合
生命周期：	Active	包装说明：	HTFQFP, TQFP64,.47SQ
Reach Compliance Code：	compliant	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	风险等级：	2.11
其他特性：	ALSO OPERATES WITH THE RANGE OF 6 V TO 65 V SUPPLY	模拟集成电路 - 其他类型：	ANALOG CIRCUIT
JESD-30 代码：	S-PQFP-G64	长度：	10 mm
湿度敏感等级：	3	功能数量：	1
端子数量：	64	最高工作温度：	85 °C
最低工作温度：	-40 °C	封装主体材料：	PLASTIC/EPOXY
封装代码：	HTFQFP	封装等效代码：	TQFP64,.47SQ
封装形状：	SQUARE	封装形式：	FLATPACK, HEAT SINK/SLUG, THIN PROFILE, FINE PITCH
峰值回流温度（摄氏度）：	NOT SPECIFIED	电源：	65 V
认证状态：	Not Qualified	座面最大高度：	1.2 mm
子类别：	Power Management Circuits	最大供电电流 (Isup)：	0.15 mA
最大供电电压 (Vsup)：	5.5 V	最小供电电压 (Vsup)：	1.62 V
标称供电电压 (Vsup)：	3.3 V	表面贴装：	YES
技术：	BICMOS	温度等级：	INDUSTRIAL
端子形式：	GULL WING	端子节距：	0.5 mm
端子位置：	QUAD	处于峰值回流温度下的最长时间：	NOT SPECIFIED
宽度：	10 mm	Base Number Matches：	1

MAX14920 数据手册

EVALUATION KIT AVAILABLE

MAX14920/MAX14921

High-Accuracy 12-/16-Cell Measurement AFEs

General Description

Benefits and Features

The MAX14920/MAX14921 battery measurement analog

front-end devices accurately sample cell voltages and

provide level shifting for primary/secondary battery packs

up to 16 cells/+65V (max). The MAX14920 monitors up

to 12 cells, while the MAX14921 monitors up to 16 cells.

Both devices simultaneously sample all cell voltages,

allowing accurate state-of-charge and source-resistance

determination. All cell voltages are level shifted to ground

reference with unity gain, simplifying external ADC data

conversion.

S High Accuracy

ꢀꢀ0.5mV (max) Cell Voltage

ꢀSimultaneous Cell Voltage Sampling

ꢀSelf-Calibration

S Integrated Diagnostics

ꢀꢀOpen-Wire and Short Fault Detection

ꢀꢀUndervoltage/Overvoltage Warning

ꢀꢀThermal Shutdown

S High Flexibility

The devices have a low-noise, low-offset amplifier that

buffers differential voltages of up to +5V, allowing moni-

toring of all common lithium-ion (Li+) cell technologies.

The resulting cell voltage error is Q0.5mV.

ꢀꢀSPI Interface

ꢀꢀ12-Cell and 16-Cell Versions

ꢀꢀ+6V Minimum (3 Cells) Operation

ꢀꢀ+0.5V to +4.5V Cell Voltage Range

ꢀꢀIntegrated Cell-Balancing FET Drivers

ꢀꢀIntegrated 5V LDO

The devices’ high accuracy make them ideal for monitoring

cell chemistries with very flat discharge curves, such as

lithium-metal phosphate.

Passive-cell balancing is supported by external FET

drivers. Integrated diagnostics in the devices allow

open-wire detection and undervoltage/overvoltage

alarms. The devices are controlled by a daisy-chainable

SPI interface.

S Low Power

ꢀꢀ1µA Shutdown Mode

ꢀꢀ1µA/10µA Cell Current Draw

The MAX14920 is available in a 64-pin (10mm x 10mm)

TQFP package with an exposed pad. The MAX14921 is

available in an 80-pin (12mm x 12mm) TQFP package.

Both devices are specified over the -40°C to +85°C

extended temperature range.

Ordering Information appears at end of data sheet.

Functional Diagram appears at end of data sheet.

For related parts and recommended products to use with this part,

refer to www.maximintegrated.com/MAX14920.related.

Applications

Industrial Battery Backup Systems

Telecom Battery Backup Systems

Energy Storage Packs

e-Transportation Energy Packs

For pricing, delivery, and ordering information, please contact Maxim Direct

at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.

19-6496; Rev 0; 10/12

12 3 4 5 6 7...29

中文翻译

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与MAX14920相关器件

型号	品牌	获取价格	描述	数据表
MAX14920ECB+	MAXIM	获取价格	Analog Circuit, 1 Func, BICMOS, PQFP64, 10 X 10 MM, ROHS COMPLIANT, TQFP-64
MAX14921	MAXIM	获取价格	A high-acuuracy 16-cell battery-management reference design
MAX14921	ADI	获取价格	高精度12/16节电池测量AFE
MAX14921ECS+T	MAXIM	获取价格	Analog Circuit, 1 Func, BICMOS, PQFP80, 12 X 12 MM, ROHS COMPLIANT, TQFP-80
MAX14921EVKIT	MAXIM	获取价格	A high-acuuracy 16-cell battery-management reference design
MAX14922	ADI	获取价格	带限流功能的高端开关控制器
MAX1492CAI	MAXIM	获取价格	3.5- and 4.5-Digit, Single-Chip ADCs with LCD Drivers
MAX1492CAI+	MAXIM	获取价格	暂无描述
MAX1492CAI+T	MAXIM	获取价格	ADC, Proprietary Method, 1 Func, 1 Channel, BICMOS, PDSO28, 5.30 MM, MO-150, SSOP-28
MAX1492CNI	MAXIM	获取价格	3.5- and 4.5-Digit, Single-Chip ADCs with LCD Drivers

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