BQ2004SN Datasheet

IC型號：
BQ2004SN
PDF描述：
Fast-Charge IC
文件大小：
142.51KB
PDF頁數(shù)：
16頁
芯片廠家：
TI

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bq2004

Fast-Charge IC

Features

鉃?/div>

Fast charge and conditioning of

nickel cadmium or nickel-metal

hydride batteries

鉃?/div>

Hysteretic PWM switch-mode

current regulation or gated con-

trol of an external regulator

鉃?/div>

Easily integrated into systems or

used as a stand-alone charger

鉃?/div>

Pre-charge qualification of tem-

perature and voltage

鉃?/div>

Configurable, direct LED outputs

display battery and charge status

鉃?/div>

Fast-charge termination by

鈭?/div>

tem-

perature/鈭?time, peak volume de-

tection, -鈭哣, maximum voltage,

maximum temperature, and maxi-

mum time

鉃?/div>

O pt i o nal t op - of f ch a r g e a nd

pulsed current maintenance

charging

鉃?/div>

Logic-level controlled low-power

mode (< 5碌A(chǔ) standby current)

General Description

The bq2004 Fast Charge IC provides

comprehensive fast charge control

functions together with high-speed

switching power control circuitry on a

monolithic CMOS device.

Integration of closed-loop current

control circuitry allows the bq2004

to be the basis of a cost-effective so-

lution for stand-alone and system-

integrated chargers for batteries of

one or more cells.

Switch-activated discharge-before-

charge allows bq2004-based chargers

to support battery conditioning and

capacity determination.

High-efficiency power conversion is

accomplished using the bq2004 as a

hysteretic PWM controller for

switch-mode regulation of the charg-

ing current. The bq2004 may alterna-

tively be used to gate an externally

regulated charging current.

Fast charge may begin on application

of the charging supply, replacement

of the battery, or switch depression.

For safety, fast charge is inhibited

unless/until the battery tempera-

ture and voltage are within config-

ured limits.

Temperature, voltage, and time are

monitored throughout fast charge.

Fast charge is terminated by any of

the following:

Rate of temperature time

(鈭員/鈭唗)

Peak voltage detection (PVD)

Negative delta voltage (-鈭哣)

Maximum voltage

Maximum temperature

Maximum time

After fast charge, optional top-off

and pulsed current maintenance

phases are available.

Pin Connections

Pin Names

DCMD

DSEL

Discharge command

Display select

Voltage termination

select

Timer mode select 1

Timer mode select 2

Temperature cutoff

Temperature sense

Battery voltage

INH

SNS

LED

MOD

DIS

Sense resistor input

Charge status output 1

Charge status output 2

System ground

5.0V

鹵

10% power

Charge current control

Discharge control

output

Charge inhibit input

DCMD

DSEL

VSEL

TM1

TM2

TCO

BAT

INH

VSEL

DIS

MOD

VCC

VSS

LED2

LED1

SNS

TCO

BAT

16-Pin Narrow DIP

or Narrow SOIC

PN2004E01.eps

SLUS063鈥揓UNE 1999 F

標準包裝
40
類別
集成電路 (IC)
家庭
PMIC - 電池管理
系列
-
功能
充電管理
電池化學
鎳鎘（NiCd）、鎳金屬氫化物（NiMH）
電源電壓
4.5 V ~ 5.5 V
工作溫度
-20°C ~ 70°C
安裝類型
表面貼裝
封裝/外殼
16-SOIC（0.154"，3.90mm 寬）
供應(yīng)商設(shè)備封裝
16-SOIC N
包裝
管件
配用
296-9495-ND - EVAL MOD FOR BQ2004 NICD/NIMH296-9496-ND - EVAL MOD FOR BQ2004 NICD/NIMH
其它名稱
296-9337-5

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BQ2004SN Datasheet

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