Datasheet > BD7220FV-C

BD7220FV-C

更新时间： 2024-09-27 11:08:23

品牌	Logo	应用领域
罗姆 - ROHM		通信放大器运算放大器传感器电阻器
页数	文件大小	规格书
68页	1909K
描述
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。

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BD7220FV-C 数据手册

Datasheet

Precision Coulomb Counter /

Low Side Current Monitor

for High-current Applications

BD7220FV-C

General Description

Key Specifications

BD7220FV-C is a coulomb counter IC for high-current

applications. The product integrates a high-accuracy

operational amp, a current accumulation logic circuit and

a 16-bit ΔΣADC to perform current accumulation with

high precision. The current sense input supports shunt

resistors and output current sensors, and uses the SPI

communication interface. BD7220FV-C only requires SPI

commands to carry out the calibration necessary for

high-precision measurement, so it can also get current

accumulation information for battery state-of-charge

estimation.

 Input Voltage Range

VCC Input Voltage Range 4.5 V to 5.5 V

VDD Input Voltage Range 2.5 V to 5.5 V

 Operating Temperature

-40 °C to +125 °C

Applications

 Battery Current Sense for EV

 Electricity Storage Systems

 Automated Guided Vehicle (AGV)

 Robot

Package

Features

W (Typ) x D (Typ) x H (Max)

6.5 mm x 6.4 mm x 1.45 mm

 AEC-Q100 Qualified ^{(Note 1)}

 16-bit ΔΣADC

SSOP-B20

 Flexible Noise Filter (4 settings)

 Automatic Calibration via SPI

 High-accuracy Op-amp with 3 Gain Settings

(5 V/V, 25 V/V, 51 V/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

SSOP-B20

 Adjustable Current Detection Interruption (3 settings)

 4 Operation Modes

(NORMAL, SLEEP, SSHDN, OFF)

 Wake Up Current Detection Function

 UVLO

(Note 1) Grade 1

Typical Application Circuit

AMPOUT

ADINP

VCC

VREF15

VREFCAL

VREF25

VDD

CSB

SDI

VCC

SHDNB

SPI/IF

VREF15

VREFCAL

VREF25

SDO

SCK

VCC

ALARMB

VREF15

VCC

VREF15

INP

INN

INTB

Current

Sense

Alarm output

ΔΣ

ADC

Accumulator

Data Register

OSC

EXADIN

ADINM GND

VREF25

DGND

〇Product structure : Silicon integrated circuit 〇This product has no designed protection against radioactive rays.

www.rohm.com

TSZ22111 • 14 • 001

TSZ02201-0Q2Q0AH00600-1-2

24.Sep.2020 Rev.002

1/65

12 3 4 5 6 7...68

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