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BQ2014H

更新时间： 2024-10-27 22:48:27

品牌	Logo	应用领域
德州仪器 - TI		电池光电二极管仪表
页数	文件大小	规格书
22页	185K
描述
Low-Cost NiCd/NiMH Gas Gauge IC

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中文翻译

获取价格

数据手册
替代型号

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BQ2014H 数据手册

Preliminary bq2014H

Low-Cost NiCd/NiMH Gas Gauge IC

bidirectional serial link to an exter-

nal processor (common ground). The

Features

General Description

5kb/s HDQ bus interface reduces

communications overhead in the

external microcontroller.

➤ Accurate measurement of avail-

able capacity in NiCd or NiMH

batteries

The bq2014H NiCd/NiMH Gas

Gauge IC is intended for battery-

pack or in-system installation to

maintain an accurate record of

available battery capacity. The IC

monitors a voltage drop across a

sense resistor connected in series

between the negative battery termi-

nal and ground to determine

charge and discharge activity of

the battery. Compensations for bat-

tery temperature, self-discharge,

and rate of discharge are applied to

the charge counter to provide avail-

able capacity information across a

wide range of operating conditions.

Battery capacity is automatically re-

calibrated, or “learned,” in the

course of a discharge cycle from full

to empty.

Internal registers include available

capacity and energy, temperature,

voltage and current, and battery

status. The external processor may

also overwrite some of the bq2014H

gas gauge data registers.

➤ Low-cost battery management so-

lution for pack integration

- ^{As little as}₂square inch of

PCB for complete circuit

- ^{Low operating current (120}µA

typical)

The bq2014H can operate from the

batteries in the pack. The REF out-

put and an external transistor allow

a simple, inexpensive voltage regu-

lator to supply power to the circuit

from the cells.

- ^{Less than 100nA of data}

retention current

➤ High-speed (5kb/s) single-wire

communication interface (HDQ

bus) for critical battery

parameters

➤ Communication with an external

charge controller such as the

bq2004

Nominal available capacity may be

directly indicated using a five-

segment LED display. The bq2014H

also supports a simple single-line

➤ Direct drive of remaining capacity

LEDs

➤ Automatic rate and temperature

compensation of measurements

➤ 16-pin narrow SOIC

Pin Connections

Pin Names

LCOM

LED common output

V_SS

System ground

SEG₁/PROG₁LED segment 1/

program 1 input

Sense resistor input

Display control input

Battery sense input

LCOM

SEG /PROG

DISP

REF

SEG₂/PROG₂LED segment 2/

program 2 input

SEG /PROG

HDQ

RBI

SEG₃/PROG₃LED segment 3/

program 3 input

RBI

HDQ

SEG /PROG

Serial communications

input/output

SEG /PROG

SEG₄/PROG₄LED segment 4/

program 4 input

DONE

DISP

No connect

SEG₅/PROG₅LED segment 5/

program 5 input

REF

V_CC

Voltage reference output

Supply voltage

16-Pin Narrow SOIC

DONE

Charge complete

input

PN20140H..eps

SLUS030–JUNE 1999

12 3 4 5 6 7...22

中文翻译

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BQ2014H 替代型号

型号	品牌	替代类型	描述	数据表
BQ34Z100-G1	TI	功能相似	多化合物 Impedance Track™ 独立电量监测计 \| 电池电量监测计

与BQ2014H相关器件

型号	品牌	获取价格	描述	数据表
BQ2014HSN	TI	获取价格	Low-Cost NiCd/NiMH Gas Gauge IC
BQ2014HSN-A309	TI	获取价格	Low-Cost NiCd/NiMH Gas Gauge IC
BQ2014HSNG4	TI	获取价格	NiCd/NiMH Gas Gauge With High-Speed 1-Wire (HDQ) Interface And 5 LED Drivers 16-SOIC 0 to
BQ2014HSNTR	TI	获取价格	具有高速单总线 (HDQ) 接口和 5 个 LED 驱动器的镍镉电池/镍氢电池电量监测计
BQ2014PN	ETC	获取价格	Battery Management
BQ2014PN-N	ETC	获取价格	Battery Management
BQ2014SN	TI	获取价格	Gas Gauge IC with External Charge Control
BQ2014SN-D120	TI	获取价格	Gas Gauge IC with External Charge Control
BQ2014SN-D120TR	TI	获取价格	Gas Gauge IC with External Charge Control
BQ2014SNN	TI	获取价格	Gas Gauge IC with External Charge Control

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