14 Series Cell Battery Monitor and Protection 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

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      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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8V≤Input voltage ≤60V operation，75V transient Q3a嘉泰姆

Monitor 14 series cell battery and support series operation Q3a嘉泰姆

12-BIT ∆Σ ADC samples battery voltage and accuracy is 5V/212=1.22mV Q3a嘉泰姆

Provide filtering mode Q3a嘉泰姆

4 channels thermal sense and accuracy is 5V/212=1.22mV Q3a嘉泰姆

Battery over/under voltage protection Q3a嘉泰姆

Battery over/under temperature protection Q3a嘉泰姆

Open wire connection detection Q3a嘉泰姆

14 cells passive balance On-chip passive cell balancing switches Provide off-chip passive balancing Q3a嘉泰姆

12-BIT ∆Σ ADC senses charge/discharge current and accuracy is 400mV/212=97μV Q3a嘉泰姆

Independent discharge control by the CTLD control pin Q3a嘉泰姆

Over Charge/Discharge current protection Q3a嘉泰姆

Charge/Discharge Short protection Q3a嘉泰姆

Reliable SPI communication (mode3) Q3a嘉泰姆

3.3V and 5.0V LDO output for external application Q3a嘉泰姆

External protection N-MOSFETs Q3a嘉泰姆

Low power consumption Q3a嘉泰姆

During operation 1mA typ. Q3a嘉泰姆

During low-power 130μA typ. Q3a嘉泰姆

During standby 80μA typ. Q3a嘉泰姆

LQFP-48 packageQ3a嘉泰姆

   应用范围 返回TOPQ3a嘉泰姆

Electric Bicycles, Motorcycles. Q3a嘉泰姆

Backup Battery Systems Q3a嘉泰姆

Hybrid Electric VehiclesQ3a嘉泰姆

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