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BQ2014SN

更新时间： 2024-10-27 22:48:27
品牌 Logo 应用领域
德州仪器 - TI 电源电路电源管理电路光电二极管仪表
页数 文件大小 规格书
22页 233K
描述
Gas Gauge IC with External Charge Control

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中文翻译

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BQ2014SN 技术参数

是否Rohs认证： 不符合生命周期：Obsolete
包装说明：SOP, SOP16,.25Reach Compliance Code：not_compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.73Is Samacsys：N
可调阈值：NO模拟集成电路 - 其他类型：POWER SUPPLY SUPPORT CIRCUIT
JESD-30 代码：R-PDSO-G16长度：9.9 mm
信道数量：1功能数量：1
端子数量：16最高工作温度：70 °C
最低工作温度：封装主体材料：PLASTIC/EPOXY
封装代码：SOP封装等效代码：SOP16,.25
封装形状：RECTANGULAR封装形式：SMALL OUTLINE
峰值回流温度（摄氏度）：NOT SPECIFIED电源：3/6.5 V
认证状态：Not Qualified座面最大高度：1.75 mm
子类别：Power Management Circuits最大供电电流 (Isup)：0.25 mA
最大供电电压 (Vsup)：6.5 V最小供电电压 (Vsup)：3 V
标称供电电压 (Vsup)：4.25 V表面贴装：YES
温度等级：COMMERCIAL端子形式：GULL WING
端子节距：1.27 mm端子位置：DUAL
处于峰值回流温度下的最长时间：NOT SPECIFIED宽度：3.9 mm
Base Number Matches：1

BQ2014SN 数据手册

 浏览型号BQ2014SN的Datasheet PDF文件第2页浏览型号BQ2014SN的Datasheet PDF文件第3页浏览型号BQ2014SN的Datasheet PDF文件第4页浏览型号BQ2014SN的Datasheet PDF文件第5页浏览型号BQ2014SN的Datasheet PDF文件第6页浏览型号BQ2014SN的Datasheet PDF文件第7页 
bq2014  
Gas Gauge IC with External Charge Control  
Nominal Available Charge (NAC)  
Features  
➤ Conservative and repeatable  
measurement of available charge  
in rechargeable batteries  
General Description  
may be directly indicated using a  
The bq2014 Gas Gauge IC is in-  
tended for battery-pack or in-system  
installation to maintain an accurate  
record of available battery charge.  
The IC monitors the voltage drop  
across a sense resistor connected in  
series between the negative battery  
terminal and ground to determine  
charge and discharge activity of the  
battery.  
five-segment LED display.  
The bq2014 supports a simple single-  
line bidirectional serial link to an ex-  
ternal processor (with a common  
ground). The bq2014 outputs battery  
information in response to external  
commands over the serial link.  
➤ Charge control output operates an  
external charge controller such as  
the bq2004 Fast Charge IC  
➤ Designed for battery pack inte-  
gration  
Internal registers include available  
charge, temperature, capacity, bat-  
tery voltage, battery ID, battery  
status, and programming pin set-  
tings. To support subassembly test-  
ing, the outputs may also be con-  
trolled. The external processor may  
also overwrite some of the bq2014  
gas gauge data registers.  
- 120µA typical standby current  
➤ Display capacity via single-wire  
serial communication port or di-  
rect drive of LEDs  
Self-discharge of NiMH and NiCd  
batteries is estimated based on an  
internal timer and temperature sen-  
sor. Compensations for battery tem-  
perature and rate of charge or dis-  
charge are applied to the charge, dis-  
charge, and self-discharge calcula-  
tions to provide available charge in-  
formation across a wide range of op-  
erating conditions. Battery capacity  
is automatically recalibrated, or  
“learned,” in the course of a dis-  
charge cycle from full to empty.  
➤ Measurements compensated for  
current and temperature  
The bq2014 may operate directly  
from three or four cells. With the  
REF output and an external transis-  
tor, a simple, inexpensive regulator  
can be built to provide VCC across a  
greater number of cells.  
➤ Self-discharge compensation using  
internal temperature sensor  
➤ User-selectable end-of-discharge  
threshold  
➤ Battery voltage, nominal avail-  
able charge, temperature, etc.  
available over serial port  
The bq2014 includes a charge con-  
trol output that controls an external  
Fast Charge IC such as the bq2004.  
➤ 16-pin narrow SOIC  
Pin Connections  
Pin Names  
LCOM  
LED common output  
REF  
CHG  
DQ  
Voltage reference output  
Charge control output  
SEG1/PROG1 LED segment 1/  
program 1 input  
LCOM  
SEG /PROG  
1
2
3
4
5
6
16  
15  
14  
13  
12  
11  
V
CC  
Serial communications  
input/output  
REF  
CHG  
DQ  
1
1
SEG2/PROG2 LED segment 2/  
program 2 input  
SEG /PROG  
2
2
EMPTY  
Empty battery indicator  
output  
SEG /PROG  
3
3
SEG3/PROG3 LED segment 3/  
program 3 input  
SEG /PROG  
EMPTY  
SB  
4
4
SB  
Battery sense input  
Display control input  
Sense resistor input  
3.0–6.5V  
SEG /PROG  
5
5
SEG4/PROG4 LED segment 4/  
program 4 input  
DONE  
7
8
10  
9
DISP  
SR  
DISP  
SR  
V
SS  
SEG5/PROG5 LED segment 5/  
program 5 input  
16-Pin Narrow SOIC  
VCC  
VSS  
PN201401.eps  
DONE  
Fast charge complete  
System ground  
12/95 C  
1
1234567...22

中文翻译

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