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BQ2056

更新时间： 2024-10-27 22:48:27

品牌	Logo	应用领域
德州仪器 - TI		光电二极管
页数	文件大小	规格书
12页	126K
描述
Low-Dropout Li-Ion Charge-Control ICs with AutoComp⑩ Charge-Rate Compensation

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BQ2056 数据手册

bq2056/T/V

Low-Dropout Li-Ion Charge-Control ICs with

AutoComp™ Charge-Rate Compensation

automatic charge-rate compensation

General Description

Features

(AutoComp) and a trickle-charger in-

terface output for reviving deeply

discharged cells. The bq2056 sup-

ports a single-cell 4.1V pack and the

2056T supports a two-cell 8.2V pack.

The bq2056V may be externally pro-

grammed for supporting other volt-

ages. All versions feature a sleep

mode for low-power applications.

➤ Significant reduction in charge

time with AutoComp charge-rate

compensation

The bq2056 series ICs are low-cost

precision linear charge-control de-

vices for Li-Ion batteries. With a

minimum number of external compo-

nents, the bq2056 is a complete low-

dropout linear charger. The dropout

voltage is typically less than 0.5V

when the bq2056 is used with an ex-

ternal PNP transistor or P-channel

FET. Features include proprietary

➤ Ideal for low-dropout linear regu-

lator design

➤ 1-cell, 2-cell, and programmable

multicell versions

➤ Low-cost charger implementation

with minimum number of exter-

nal components

Functional Block Diagram

➤ Programmable current limit to

accommodate any battery size

➤ Interface to external trickle

charger for reviving deeply dis-

charged batteries

SNS

TRKL

2.0V

➤ High-accuracy charge control

BAT

K_COMP

➤ Sleep mode for low power con-

COMP

sumption

V_REG

➤ Direct battery voltage sense

without resistive dividers

(bq2056 and bq2056T)

SNS

100mV

V_SS

INH

➤ Small 8-pin SOIC package

BDbq2056.eps

Pin Names

Pin Connections

INH

Charge-inhibit input

SNS

BAT

Current sense input

Battery voltage input

INH

TRKL

Trickle-charge

interface output

TRKL

Charge control

output

V_SS

Ground

BAT

SNS

COMP

Charge-rate

compensation input

V_CC

Supply input

COMP

8-Pin DIP or Narrow SOIC

PN-205601.eps

10/98 B

12 3 4 5 6 7...12

中文翻译

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