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BQ2012SN

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
20页	188K
描述
Gas Gauge IC With Slow-Charge Control

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中文翻译

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技术参数
数据手册

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BQ2012SN 技术参数

是否Rohs认证：	不符合	生命周期：	Obsolete
包装说明：	SOP, SOP16,.25	Reach Compliance Code：	not_compliant
ECCN代码：	EAR99	HTS代码：	8542.39.00.01
风险等级：	5.78	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	技术：	CMOS
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

BQ2012SN 数据手册

bq2012

Gas Gauge IC With

Slow-Charge Control

means of controlling charge based

Features

General Description

on the battery's charge state.

➤ Conservative and repeatable

measurement of available charge

in rechargeable batteries

The bq2012 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 a 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.

Nominal available charge may be di-

rectly indicated using a five- or six-

segment LED display. These seg-

ments are used to graphically indi-

cate nominal available charge.

➤ Charge control output

➤ Designed for battery pack inte-

The bq2012 supports a simple

single-line bidirectional serial link to

an external processor (common

ground). The bq2012 outputs battery

information in response to external

commands over the serial link.

gration

- ¹²⁰µA typical standby current

(self-discharge estimation mode)

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,

discharge, and self-discharge calcu-

lations to provide available charge

information across a wide range of

operating conditions. Battery capac-

ity is automatically recalibrated, or

“learned,” in the course of a dis-

charge cycle from full to empty.

- ^{Small size enables imple-}

Internal registers include available

charge, temperature, capacity, battery

ID, battery status, and programming

pin settings. To support subassembly

testing, the outputs may also be con-

trolled. The external processor may

also overwrite some of the bq2012 gas

gauge data registers.

mentations in as little as

square inch of PCB

➤ Integrate within a system or as a

stand-alone device

- ^{Display capacity via single-}

wire serial communication

port or direct drive of LEDs

The bq2012 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 V_CCacross a

greater number of cells.

➤ Measurements compensated for

current and temperature

The bq2012 includes a charge con-

trol output that, when used with

other full-charge safety termination

methods, can provide a cost-effective

➤ Self-discharge compensation us-

ing internal temperature sensor

➤ 16-pin narrow SOIC

Pin Connections

Pin Names

LCOM

LED common output

REF

CHG

Voltage reference output

Charge control output

SEG₁/PROG₁LED segment 1/

program 1 input

LCOM

SEG /PROG

REF

CHG

Serial communications

input/output

SEG₂/PROG₂LED segment 2/

program 2 input

SEG /PROG

EMPTY

Empty battery indicator

output

SEG /PROG

SEG₃/PROG₃LED segment 3/

program 3 input

SEG /PROG

EMPTY

Battery sense input

Display control input

Sense resistor input

3.0–6.5V

SEG /PROG

SEG₄/PROG₄LED segment 4/

program 4 input

SEG /PROG

DISP

SEG₅/PROG₅LED segment 5/

program 5 input

16-Pin Narrow SOIC

V_CC

V_SS

PN201201.eps

SEG₆/PROG₆LED segment 6/

program 6 input

System ground

9/96 B

12 3 4 5 6 7...20

中文翻译

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