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BQ2054

更新时间： 2024-10-27 22:48:27

品牌	Logo	应用领域
德州仪器 - TI		电池
页数	文件大小	规格书
16页	150K
描述
Lithium Ion Fast-Charge IC

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中文翻译

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BQ2054 数据手册

bq2054

Lithium Ion Fast-Charge IC

figured limits. If the battery voltage

General Description

Features

is less than the low-voltage thresh-

old, the bq2054 provides low-current

conditioning of the battery.

The bq2054 Lithium Ion Fast-

Charge IC is designed to optimize

charging of lithium ion (Li-Ion)

chemistry batteries. A flexible

pulse-width modulation regulator

allows the bq2054 to control voltage

and current during charging. The

regulator frequency is set by an ex-

ternal capacitor for design flexibility.

The switch-mode design keeps

power dissipation to a minimum.

➤ Safe charge of Lithium Ion bat-

tery packs

A constant current-charging phase re-

plenishes up to 70% of the charge ca-

pacity, and a voltage-regulated phase

returns the battery to full. The charge

cycle terminates when the charging

current falls below a user-selectable

current limit. For safety, charging ter-

minates after maximum time and is

suspended if the temperature is out-

side the preconfigured limits.

➤ Voltage-regulated current-

limited charging

➤ Fast charge terminated by se-

lectable minimum current; safety

backup termination on maximum

time

➤ Charging continuously qualified

by temperature and voltage lim-

its

The bq2054 measures battery tem-

perature using an external thermis-

tor for charge qualification. Charging

begins when power is applied or on

battery insertion.

The bq2054 provides status indica-

tions of all charger states and faults

for accurate determination of the

battery and charge system condi-

tions.

➤ Pulse-width modulation control

ideal for high-efficiency switch-

mode power conversion

For safety, the bq2054 inhibits

charging until the battery voltage

and temperature are within con-

➤ Direct LED control outputs dis-

play charge status and fault con-

ditions

Pin Connections

Pin Names

TPWM

LED₃

LCOM

V_SS

Regulator timebase input

Charge status output 3

Common LED output

System ground

Time-out programming

input

ICTL

Inrush current control

output

ICTL

LED /DSEL

LED

BAT

Battery voltage input

BAT

MOD

V_CC

5.0V 10% power

VCOMP

ICOMP

I_TERM

Voltage loop comp input

Current loop comp input

VCOMP

ICOMP

MOD

LED₁

Modulation control output

Charge status output 1

LCOM

LED

TERM

SNS

Minimum current

termination select input

LED₂/

DSEL

Charge status output 2/

Display select input

TPWM

SNS

Sense resistor input

16-Pin Narrow

DIP or SOIC

Temperature sense input

PN205401.eps

6/99 H

12 3 4 5 6 7...16

中文翻译

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与BQ2054相关器件

型号	品牌	获取价格	描述	数据表
BQ2054PN	TI	获取价格	Lithium Ion Fast-Charge IC
BQ2054SN	TI	获取价格	Lithium Ion Fast-Charge IC
BQ2054SNTR	TI	获取价格	Switch-mode Li-Ion Battery Charger in PDIP or SOIC Package 16-SOIC
BQ2054SNTRG4	TI	获取价格	0.005A BATTERY CHARGE CONTROLLER, 100kHz SWITCHING FREQ-MAX, PDSO16, 0.150 INCH, GREEN, SO
BQ2056	TI	获取价格	Low-Dropout Li-Ion Charge-Control ICs with Au
BQ2056CSN	TI	获取价格	Advanced Li-Ion Linear Charge Management IC
BQ2056CTS	TI	获取价格	Advanced Li-Ion Linear Charge Management IC
BQ2056PN	TI	获取价格	Low-Dropout Li-Ion Charge-Control ICs with Au
BQ2056SN	TI	获取价格	Low-Dropout Li-Ion Charge-Control ICs with Au
BQ2056SNTR	TI	获取价格	Li-Ion Low-Dropout Linear Charge Management IC With AutoCompTM 8-SOIC -20 to 70

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