bd7220fv-c是适用于大电流检测应用的库仑计ic。不仅内置16位δσadc,还内置了高精度运算放大器和电流累加逻辑电路,因此可以高精度地计算电流累加值。电流检测输入支持分流电阻器和电流输出型电流传感器,并且采用spi作为通信i/f。高精度测量所需的校准可以仅使用spi命令执行,因此只使用本ic即可获取预测剩余电量所需的电流累加信息。

主要规格

 
型号 | bd7220fv-ce2
status | 推荐品
封装 |
包装数量 | 2500
最小独立包装数量 | 2500
包装形态 | taping
rohs |

特性:

vcc (min.)[v]

4.5

vcc (max.)[v]

5.5

gain [v/v]

5/25/51

resolution

16bit

sense resistor

external

communication i/f

spi

monitor

current, voltage, temperature

operating temperature (min.)[℃]

-40

operating temperature (max.)[℃]

125

package size [mm]

6.5x6.4 (t=1.45)

common standard

aec-q100 (automotive grade)

特点:

  • aec-q100 qualified(grade1)
  • 16-bit δσadc
  • flexible noise filter(4 settings)
  • automatic calibration via spi
  • high-accuracy op-amp with 3 gain settings(5v/v, 25v/v, 51v/v)
  • supports current sensing using shunt resistors
  • supports current sensing using current output type current sensors
  • spi i/f(optional crc)
  • coulomb counter function with spi external communication
  • accumulation current counter which counts charge and discharge independently
  • adjustable current detection interruption(3 settings)
  • 4 operation modes(normal, sleep, sshdn, off)
  • wake up current detection function
  • uvlo
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