LTC4068XEDD-4.2

更新时间： 2024-09-15 05:43:59

品牌	Logo	应用领域
凌特 - Linear		电池光电二极管
页数	文件大小	规格书
12页	140K
描述
Standalone Linear Li-Ion Battery Charger with Programmable Termination

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LTC4068XEDD-4.2 数据手册

LTC4068-4.2/LTC4068X-4.2

Standalone Linear

Li-Ion Battery Charger with

Programmable Termination

FEATURES

DESCRIPTIO

■

Programmable Charge Current Up to 950mA

The LTC^®4068 is a complete constant-current/constant-

voltage linear charger for single cell lithium-ion batteries.

Its DFN package and low external component count make

the LTC4068 ideally suited for portable applications. Fur-

thermore, the LTC4068 is designed to work within USB

power specifications.

■

Complete Linear Charger in DFN Package

■

No MOSFET, Sense Resistor or Blocking Diode

Required

■

Thermal Regulation Maximizes Charge Rate

Without Risk of Overheating*

■

Charges Directly from a USB Port

No external sense resistor or external blocking diode are

requiredduetotheinternalMOSFETarchitecture.Thermal

feedback regulates the charge current to limit the die

temperature during high power operation or high ambient

temperature conditions. The charge voltage is fixed at

4.2V and the charge current is programmed with a resis-

tor. The LTC4068 terminates the charge cycle when the

charge current drops below the programmed termination

threshold after the final float voltage is reached.

■

Programmable Charge Current Termination

■

Preset 4.2V Charge Voltage with ±1% Accuracy

■

Charge Current Monitor Output for Gas Gauging*

■

Automatic Recharge

■

Charge Status Output

■

“AC Present” Output

■

2.9V Trickle Charge Threshold (LTC4068)

■

Available Without Trickle Charge (LTC4068X)

■

Soft-Start Limits Inrush Current

■

When the input supply (wall adapter or USB supply) is

removed,theLTC4068entersalowcurrentstatedropping

the battery drain current to less than 2µA. Other features

include charge current monitor, undervoltage lockout,

automatic recharge and status pins to indicate charge

termination and the presence of adequate input voltage.

Low Profile (3mm × 3mm × 0.75mm) DFN Package

APPLICATIO S

■

Cellular Telephones, PDAs, MP3 Players

Bluetooth Applications

■

, LTC and LT are registered trademarks of Linear Technology Corporation.

Protected by U.S. Patents, including 6522118.

TYPICAL APPLICATIO

Complete Charge Cycle (750mAh Battery)

700

600

500

400

300

200

100

4.75

4.50

4.25

4.00

3.75

3.50

3.25

3.00

CONSTANT

CURRENT

Single Cell Li-Ion Battery Charger with C/5 Termination

CONSTANT

VOLTAGE

600mA

BAT

4.5V TO 6.5V

LTC4068-4.2

1-CELL

Li-Ion

BATTERY

CHRG

ACPR

ITERM

PROG

= 5V

825Ω

= 40°C/W

GND

1µF

1.65k

= 1.65k

PROG

TERM

= 825Ω

406842 TA01

= 25°C

0.25 0.5 0.75 1.0 1.25

1.75 2.0 2.25

1.5

406842 TA02

TIME (HOURS)

406842fa

12 3 4 5 6 7...12

中文翻译

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与LTC4068XEDD-4.2相关器件

型号	品牌	获取价格	描述	数据表
LTC4068XEDD-4.2#PBF	Linear	获取价格	LTC4068-4.2 - Standalone Linear Li-Ion Battery Charger with Programmable Termination; Pack
LTC4068XEDD-4.2#TR	Linear	获取价格	LTC4068-4.2 - Standalone Linear Li-Ion Battery Charger with Programmable Termination; Pack
LTC4068XEDD-4.2#TRPBF	Linear	获取价格	暂无描述
LTC4069	Linear	获取价格	Standalone 750mA Li-Ion Battery Charger in 2
LTC4069	ADI	获取价格	采用 2mm x 2mm DFN 封装并具有 NTC 热敏电阻输入的独立 750mA 锂离
LTC4069-4.4	Linear	获取价格	Standalone 750mA Li-Ion Battery Charger in 2
LTC4069-4.4	ADI	获取价格	采用 2mm x 2mm DFN 封装并具有 NTC 热敏电阻输入的独立 750mA 锂离
LTC4069EDC	Linear	获取价格	LTC4069 - Standalone 750mA Li-Ion Battery Charger in 2 x 2 DFN with NTC Thermistor Input;
LTC4069EDC#PBF	Linear	获取价格	LTC4069 - Standalone 750mA Li-Ion Battery Charger in 2 x 2 DFN with NTC Thermistor Input;
LTC4069EDC#TRM	Linear	获取价格	LTC4069 - Standalone 750mA Li-Ion Battery Charger in 2 x 2 DFN with NTC Thermistor Input;

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