DESCRIPTION

JW?3370 is a multi-cell battery stack monitoring and protection IC that includes a 14-bit ADC for battery voltage and temperature sense, a 16-bit ADC for charge/discharge current sense.

JW3370 provides passive balance function for each cell and allows at most 3 consecutive cells being discharged simultaneously.

JW3370 communicates with external control unit via SPI interface. More JW3370 can operate in series to monitor long string battery.

JW3370 integrates complete protection function including over/under voltage, over/under temperature, over charge/discharge current, short and open wire.

JW3370 supports both Sleep mode and Ship mode to achieve high efficiency with low power when charge/discharge current is minor.

FEATURES

?Monitor 10 series cell battery and supportseries operation

?14-bit ΔΣ ADC samples battery voltage andaccuracy is ±7mV@2.3~4.3V

?Provide filtering modeCompanyCompany

3 channels thermal sense and accuracy is ±1℃(no considering NTC resistor offset)

?Battery over/under voltage protection

?Battery over/under temperature protection

?Open wire connection detection

?10 cells passive balance

On-chip passive cell balancing switches

Provide off-chip passive balancing

?16-bit ΔΣ ADC senses charge/dischargecurrent and accuracy is

±150μV@(-100 mV ~100mV),

±300μV@(-190 mV ~190mV),

?Over Charge/Discharge current protection

?Discharge Short protection

?Reliable SPI communication (mode3)

?3.3V LDO output for external application

?External protection N-MOSFETs

?Low power consumption

During operation 1mA typ. 1.5mA max

(Power consumption of communication andtemperature detection is not included)

During Sleep 18μA typ. 20μA max

During Ship 3μA typ. 4μA max

?Package: TSSOP38

APPLICATIONS

?Electric Bicycles, Motorcycles.

?Backup Battery Systems

?Hybrid Electric Vehicle