Datasheet > DV2057T

DV2057T

更新时间： 2024-09-25 03:30:55

品牌	Logo	应用领域
德州仪器 - TI		稳压器电池
页数	文件大小	规格书
5页	326K
描述
Advanced Li-Ion Charger Development System Control of On-Board Linear Regulator

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DV2057T 数据手册

DV2057/C/T/W

Advanced Li-Ion Charger Development System

Control of On-Board Linear Regulator

Features

➤

bq2057 charge-control evaluation and development

system for single- and dual-cell Li-Ion packs with

coke or graphite anodes

➤

Optional temperature monitoring before and during

charge

➤

Proprietary AutoComp charge-rate compensation

Integrated trickle-charge for conditioning deeply

discharged batteries

➤

Regulated charge current and voltage

approximately 10% of the regulation current. The condi-

tioning current also minimizes heat dissipation in the

external pass element during the initial stage of charge.

Charge status output for LED or host-processor

interface to indicate charge-in-progress,

full-capacity, and fault conditions

Once the battery voltage reaches the internal threshold,

➤

Automatic battery-re-charge feature

Charge termination by minimum current

Direct battery connection

_MIN, full charge begins. The DV2057/C/T/W complete

the charge cycle in two phases. While the pack is below

the regulation voltage, a constant-current phase replen-

ishes approximately 70% of battery capacity. An accu-

rate voltage-regulation phase completes the charge. The

DV2057/C/T/W terminate charge when the current ta-

pers off to the V_TERMthreshold.

500mA charge rate

High-side current sensing

These boards feature the proprietary AutoComp tech-

nique to compensate safely for the internal impedance of

the battery. The AutoComp resistors, R_COMP1, and

General Description

The DV2057/C/T/W are complete development and

evaluation environments for bq2057 series advanced

Li-Ion linear charge management ICs. The DV2057 fam-

ily supports both single- and dual-cell Li-Ion packs with

coke or graphite anodes:

_COMP2, must be set according to the characteristics of

the battery.

Before using these development boards, please review

the bq2057 data sheet.

Part Number

DV2057

DV2057C

DV2057T

DV2057W

Regulation Voltage

Connection Descriptions

4.1V

4.2V

8.2V

8.4V

DC+

DC-

Charger supply positive

Charger supply ground

Full charge is preceded by charge qualification based on

battery temperature and voltage. The DV2057/C/T/W

suspend charge if the battery temperature is outside the

V_TS1to V_TS2thresholds and wait until the battery tem-

perature is within the allowed range. The

DV2057/C/T/W also check the battery voltage. If the bat-

tery voltage is below the low-voltage threshold, V_MIN,the

DV2057/C/T/W use trickle charge to condition the bat-

tery. The conditioning charge rate, I_COND, is set at

BAT+

BAT-

Positive battery terminal

Negative battery terminal

TEM+

INH

Thermistor connection

Charge inhibit input

SLUU056A - JANUARY 2000

12 3 4 5

中文翻译

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与DV2057T相关器件

型号	品牌	获取价格	描述	数据表
DV2057W	TI	获取价格	Advanced Li-Ion Charger Development System Control of On-Board Linear Regulator
DV24	EXTECH	获取价格	Non-Contact Voltage Detector and Flashlight
DV24200	ETC	获取价格	DV series 24 characters x 2 lines
DV243003	MICROCHIP	获取价格	MPLABÂ® Starter Kit for Serial Memory Product
DV25	EXTECH	获取价格	Dual Range AC Voltage Detector Flashlight
DV2805	ASI	获取价格	VHF POWER MOSFET N-Channel Enhancement Mode
DV2805S	ETC	获取价格	TRANSISTOR \| MOSFET \| N-CHANNEL \| 80V V(BR)DSS \| 500MA I(D) \| SOT-123VAR
DV2805W	ETC	获取价格	TRANSISTOR \| MOSFET \| N-CHANNEL \| 80V V(BR)DSS \| 500MA I(D) \| STX-M4
DV2810S	ETC	获取价格	TRANSISTOR \| MOSFET \| N-CHANNEL \| 80V V(BR)DSS \| 1A I(D) \| SOT-123VAR
DV28120T	ETC	获取价格	TRANSISTOR \| MOSFET \| N-CHANNEL \| 80V V(BR)DSS \| 12A I(D) \| SOT-119VAR

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