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BQ2050

更新时间： 2024-10-27 22:48:27

品牌	Logo	应用领域
德州仪器 - TI		仪表
页数	文件大小	规格书
21页	235K
描述
Lithium Ion Power Gauge⑩ IC

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中文翻译

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数据手册

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BQ2050 数据手册

bq2050

Lithium Ion Power Gauge™ IC

supports a simple single-line bidi-

Features

General Description

rectional serial link to an external

➤ Conservative and repeatable

measurement of available capac-

ity in Lithium Ion rechargeable

batteries

The bq2050 Lithium Ion Power

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 and rate of charge

or discharge are applied to the

charge, discharge, and self-discharge

calculations to provide available ca-

pacity information across a wide

range of operating conditions. Bat-

tery capacity is automatically recali-

brated, or “learned,” in the course of

a discharge cycle from full to empty.

processor (common ground). The

bq2050 outputs battery information

in response to external commands

over the serial link.

➤ Designed for battery pack inte-

The bq2050 may operate directly

from one cell (V_BAT> 3V). With the

REF output and an external transis-

tor, a simple, inexpensive regulator

can be built for systems with more

than one series cell.

gration

- ¹²⁰µA typical operating

current

- ^{Small size enables imple-}

Internal registers include available

capacity, temperature, scaled avail-

able energy, 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 bq2050

power 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

Nominal available capacity may be

directly indicated using a five-

segment LED display. These seg-

ments are used to graphically indi-

cate available capacity. The bq2050

➤ Measurements compensated for

current and temperature

➤ Self-discharge compensation us-

ing internal temperature sensor

➤ 16-pin narrow SOIC

Pin Connections

Pin Names

LCOM

LED common output

REF

N/C

Voltage reference output

No connect

SEG₁/PROG₁LED segment 1/

program 1 input

LCOM

SEG /PROG

REF

N/C

RBI

Serial communications

input/output

SEG₂/PROG₂LED segment 2/

program 2 input

SEG /PROG

RBI

Battery sense input

Display control input

Sense resistor input

3.0–6.5V

SEG /PROG

SEG₃/PROG₃LED segment 3/

program 3 input

SEG /PROG

SEG₄/PROG₄LED segment 4/

program 4 input

DISP

PROG

DISP

SEG₅/PROG₅LED segment 5/

program 5 input

V_CC

V_SS

16-Pin Narrow SOIC

PN205001.eps

PROG₆

Program 6 input

System ground

9/96 C

12 3 4 5 6 7...21

中文翻译

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与BQ2050相关器件

型号	品牌	获取价格	描述	数据表
BQ2050H	TI	获取价格	Low-Cost Lithium Ion Power Gauge IC
BQ2050HSN	TI	获取价格	Low-Cost Lithium Ion Power Gauge IC
BQ2050HSN-A304TR	TI	获取价格	1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO16, 0.150 INCH, SOIC-16
BQ2050HSN-A308	TI	获取价格	Low-Cost Lithium Ion Power Gauge IC
BQ2050HSN-A308TR	ROCHESTER	获取价格	1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO16, 0.150 INCH, SOIC-16
BQ2050HSN-A308TR	TI	获取价格	1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO16, 0.150 INCH, SOIC-16
BQ2050HSN-A508	TI	获取价格	Low-Cost Lithium Ion Power Gauge IC
BQ2050HSN-A508TR	TI	获取价格	Low-Cost Lithium Ion Power Gauge IC
BQ2050PN	TI	获取价格	1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDIP16
BQ2050PN-N	TI	获取价格	1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDIP16

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