BQ2982集成電路（IC）的電池管理規(guī)格書(shū)PDF中文資料

BQ2982屬于集成電路（IC）的電池管理。由德州儀器制造生產(chǎn)的BQ2982電池管理電池管理 PMIC（電源管理集成電路）系列產(chǎn)品可用于電池相關(guān)的監(jiān)測(cè)和控制功能，包括身份驗(yàn)證、電池平衡、狀態(tài)監(jiān)測(cè)、電量計(jì)量、電源選擇、短路保護(hù)、過(guò)壓和欠壓保護(hù)等等。請(qǐng)注意，雖然該系列中的某些產(chǎn)品可能包括電池充電功能，但將充電功能作為主要功能的產(chǎn)品是單獨(dú)分類(lèi)的。

1 Features

? Voltage protection:

– Overvoltage (OV): ±10 mV

– Undervoltage (UV): ±20 mV

? Current protection:

– Overcurrent in charge (OCC): ±1 mV

– Overcurrent in discharge (OCD): ±1 mV

– Short circuit in discharge (SCD): ±5 mV

? Temperature protection:

– Overtemperature (OT)

? Additional features:

– Supports as low as a 1-mΩ sense resistor

(RSNS)

– High-side protection

– High Vgs FET drive

– 0-V charging (only BQ2980)

– CTR pin for FET override control for system

reset/shutdown

– Configure CTR for second OT protection

through an external PTC thermistor

? Current consumption:

– NORMAL mode: 4 μA

– SHUTDOWN mode: 0.1-μA maximum

? Package:

– 8-pin X2QFN: 1.50 × 1.50 × 0.37 mm

2 Applications

? Smartphones

? Tablets

? Power bank

? Wearables

3 Description

The BQ298xyz family of devices, featuring integrated

charge-pump FET drivers, provides high-side primary

battery cell protection for 1-series Li-ion and Lipolymer

batteries, enabling consistent Rdson across

cell voltages. For better system thermal performance,

the BQ298x device's accuracy enables the use of a

sense resistor as low as 1 mΩ.

The CTR pin in the BQ298x device can be configured

to override the FET driver by host control to create a

system reset or shutdown function. Alternatively, the

CTR pin can be configured to connect an external

Positive Temperature Coefficient (PTC) thermistor for

FET OT protection in addition to the internal die

temperature sensor. The BQ2980xy devices support

zero-volt (0-V) charging, while the BQ2982xy devices

have this disabled.