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BQ2050H

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
25页	232K
描述
Low-Cost Lithium Ion Power Gauge IC

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中文翻译

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数据手册

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BQ2050H 数据手册

bq2050H

Low-Cost Lithium Ion Power Gauge™ IC

ments are used to graphically indi-

cate available capacity. The

Features

General Description

bq2050H also supports a simple

single-line bidirectional serial link

to an external processor (common

ground). The 5kb HDQ bus interface

reduces communications overhead

in the external microcontroller.

➤ Accurate measurement of avail-

able capacity in Lithium Ion bat-

teries

The bq2050H 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, self discharge,

and rate of discharge are applied to

the charge counter to provide avail-

able capacity information across a

wide range of operating conditions.

Battery capacity is automatically re-

calibrated, or “learned,” in the

course of a discharge cycle from full

to empty.

➤ Provides a low-cost battery man-

agement solution for pack

integration

Internal registers include available

capacity, temperature, scaled avail-

able energy, battery ID, battery

status, and Li-Ion charge FET

status. The external processor may

also overwrite some of the bq2050H

power gauge data registers.

- ^{Complete circuit can fit in as}

little as ₂square inch of PCB

- ^{Low operating current (120}µA

typical)

- ^{Less than 100nA of data}

retention current

The bq2050H can operate from the

batteries in the pack. The REF out-

put and an external transistor allow

a simple, inexpensive voltage regu-

lator to supply power to the circuit

from the cells.

➤ High-speed (5kb) single-wire

communication interface (HDQ

bus) for critical battery

parameters

➤ Monitors and controls charge FET

in Li-Ion pack protection circuit

Nominal available capacity may be

directly indicated using a five-

segment LED display. These seg-

➤ Direct drive of remaining capacity

LEDs

➤ Measurements automatically

compensated for rate and

temperature

➤ 16-pin narrow SOIC

Pin Connections

Pin Names

LCOM

LED common output

V_SS

System ground

SEG₁/PROG₁LED segment 1/

program 1 input

Sense resistor input

Display control input

Battery sense input

LCOM

DISP

SEG /PROG

REF

PSTAT

HDQ

RBI

SEG₂/PROG₂LED segment 2/

program 2 input

SEG /PROG

SEG₃/PROG₃LED segment 3/

program 3 input

RBI

HDQ

SEG /PROG

Serial communications

input/output

SEG /PROG

SEG₄/PROG₄LED segment 4/

program 4 input

CFC

DISP

PSTAT

REF

Protector status input

Voltage reference output

Supply voltage

SEG₅/PROG₅LED segment 5/

program 5 input

16-Pin Narrow SOIC

PN2050H1.eps

CFC

Charge FET control

output

V_CC

SLUS150–MAY 1999 D

12 3 4 5 6 7...25

中文翻译

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与BQ2050H相关器件

型号	品牌	获取价格	描述	数据表
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
BQ2050SN	TI	获取价格	Lithium Ion Power Gauge⑩ IC

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