BQ771818集成电路（IC）的电池管理规格书PDF中文资料

BQ771818属于集成电路（IC）的电池管理。由德州仪器制造生产的BQ771818电池管理电池管理 PMIC（电源管理集成电路）系列产品可用于电池相关的监测和控制功能，包括身份验证、电池平衡、状态监测、电量计量、电源选择、短路保护、过压和欠压保护等等。请注意，虽然该系列中的某些产品可能包括电池充电功能，但将充电功能作为主要功能的产品是单独分类的。

1 Features

• 2-, 3-, 4-, and 5-series cell overvoltage protection

• Internal delay timer

• Fixed OVP threshold

• High-accuracy overvoltage protection:

± 10 mV

• Low power consumption ICC ≈ 1 μA

(VCELL(ALL) < VPROTECT)

• Low leakage current per cell input < 100 nA

• Functional Safety-Capable

– Documentation available to aid functional safety

system design

• Package footprint options:

– Small 8-pin QFN (3.00 mm × 4.00 mm)

– Leaded 8-pin MSOP (3.00 mm × 5.00 mm,

including leads)

2 Applications

• Protection for li-ion battery packs used in:

– Handheld garden tools

– Handheld power tools

– Cordless vacuum cleaners

– UPS battery backup

– Light electric vehicles (eBike, eScooter, pedal

assist bicycles)

3 Description

The BQ7718xy family of products provides an

overvoltage monitor and protector for Li-Ion battery

pack systems. Each cell is monitored independently

for an overvoltage condition. For quicker productionline

testing, the BQ7718xy device provides a

Customer Test Mode (CTM) with greatly reduced

delay time.

In the BQ7718xy device, an internal delay timer is

initiated upon detection of an overvoltage condition

on any cell. Upon expiration of the delay timer, the

output is triggered into its active state (either high or

low depending on the configuration).