CXLB74134 is a multi-cell battery stack monitoring and protection IC that includes a 12-bit ADC for battery voltage and temperature sense, a 12-bit ADC for charge/discharge current sense. CXLB74134 provides passive balance function for each cell and allows at most 3 consecutive cells being discharged simultaneously. CXLB74134has two ADC operation modes: fast mode and filtering mode. The fast mode enables conversion time as fast as 1280μs, while the filtering mode provides better than 80dB rejection at frequencies above 50Hz. CXLB74134communicates with external control unit via SPI interface. More CXLB74134can operate in series to monitor long string battery. CXLB74134integrates complete protection function including over/under voltage, over/under thermal, over charge/discharge current, short and open wire. CXLB74134supports both low-power mode and standby mode to achieve high efficiency with low power when charge/discharge current is minor.
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[ CXLB74134 ]"
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7.相关产品
产品概述 返回TOP
CXLB74134 is a multi-cell battery stack monitoring and protection IC that includes a 12-bit ADC for battery voltage and temperature sense, a 12-bit ADC for charge/discharge current sense. CXLB74134 provides passive balance function for each cell and allows at most 3 consecutive cells being discharged simultaneously. CXLB74134has two ADC operation modes: fast mode and filtering mode. The fast mode enables conversion time as fast as 1280μs, while the filtering mode provides better than 80dB rejection at frequencies above 50Hz. CXLB74134communicates with external control unit via SPI interface. More CXLB74134can operate in series to monitor long string battery. CXLB74134integrates complete protection function including over/under voltage, over/under thermal, over charge/discharge current, short and open wire. CXLB74134supports both low-power mode and standby mode to achieve high efficiency with low power when charge/discharge current is minor.
产品特点 返回TOP
8V≤Input voltage ≤60V operation，75V transient
Monitor 14 series cell battery and support series operation
12-BIT ∆Σ ADC samples battery voltage and accuracy is 5V/212=1.22mV
Provide filtering mode
4 channels thermal sense and accuracy is 5V/212=1.22mV
Battery over/under voltage protection
Battery over/under temperature protection
Open wire connection detection
14 cells passive balance On-chip passive cell balancing switches Provide off-chip passive balancing
12-BIT ∆Σ ADC senses charge/discharge current and accuracy is 400mV/212=97μV
Independent discharge control by the CTLD control pin
Over Charge/Discharge current protection
Charge/Discharge Short protection
Reliable SPI communication (mode3)
3.3V and 5.0V LDO output for external application
External protection N-MOSFETs
Low power consumption
During operation 1mA typ.
During low-power 130μA typ.
During standby 80μA typ.
LQFP-48 package
应用范围 返回TOP
Electric Bicycles, Motorcycles.
Backup Battery Systems
Hybrid Electric Vehicles
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产品封装图 返回TOP
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移动电源解决方案 |
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产品型号 |
充电电流 |
电池电压 |
充电指示器 |
USB |
负载自动识别 |
输出电流 |
封装 |
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(A) |
(V) |
开关 |
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2.5 |
4.2/4.35 |
Y |
Y |
Y |
3.1A |
QFN4X4-24 |
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2 |
4.2/4.35 |
Y |
Y |
Y |
2.4A |
QFN4X4-24 |
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模拟前端电池管理系统 |
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产品型号 |
操作电压 (V) |
最大电 池节数 |
电压ADC精确度 (-40°C~85°C) |
电流ADC精确 度(-40°C~85°C) |
静态电流 |
支持级联 |
封装 |
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10~60 |
14 |
±15mV |
±500uV |
200uA@Low power mode 80uA@Standby mode |
Y |
LQFP48 |
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升压转换器 |
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P/N |
Vin |
Vout |
最大开关电流 |
输出功率 |
可编程输出电流 |
封装 |
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(V) |
(V) |
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2.8~20 |
3~20 |
10 |
18W@VIN=3.2 V30W@VIN=6.4V |
Y |
QFN3X4-15 |
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