Datasheet > LTC4002ES8

LTC4002ES8

更新时间： 2024-01-09 09:35:24

品牌	Logo	应用领域
凌特 - Linear		电池开关
页数	文件大小	规格书
16页	168K
描述
Standalone Li-Ion Switch Mode Battery Charger

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中文翻译

获取价格

数据手册

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LTC4002ES8 数据手册

LTC4002

Standalone Li-Ion

Switch Mode Battery Charger

FEATURES

DESCRIPTIO

■

Wide Input Supply Range:

The LTC^®4002 is a complete battery charger controller for

one (4.2V) or two (8.4V) cell lithium-ion batteries. With a

500kHz switching frequency, the LTC4002 provides a

small, simple and efficient solution to fast charge Li-Ion

batteriesfromawiderangeofsupplyvoltages. Anexternal

senseresistorsetsthechargecurrentwith±5%accuracy.

An internal resistor divider and precision reference set the

final float voltage to 4.2V per cell with ±1% accuracy.

4.7V to 22V – 4.2 Version

8.9V to 22V – 8.4 Version

■

High Efficiency Current Mode PWM Controller with

500kHz Switching Frequency

±1% Charge Voltage Accuracy

■

End-of-Charge Current Detection Output

■

3 Hour Charge Termination Timer

■

Constant Switching Frequency for Minimum Noise

Whentheinputsupplyisremoved,theLTC4002automati-

callyentersalowcurrentsleepmode,droppingthebattery

drain current to 10µA. An internal comparator detects the

near end-of-charge condition while an internal timer sets

thetotalchargetimeandterminatesthechargecycle.After

the charge cycle ends, if the battery voltage drops below

4.05Vpercell, anewchargecyclewillautomaticallybegin.

■

±5% Charge Current Accuracy

■

Low 10µA Reverse Battery Drain Current

■

Automatic Battery Recharge

■

Automatic Shutdown When Input Supply is Removed

■

Automatic Trickle Charging of Low Voltage Batteries

■

Battery Temperature Sensing and Charge

Qualification

■

TheLTC4002isavailableinthe8-leadSOand10-leadDFN

packages.

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

All other trademarks are the property of their respective owners.

Stable with Ceramic Output Capacitor

8-Lead SO and 10-Lead DFN Packages

APPLICATIO S

■

Portable Computers

■

Charging Docks

■

Handheld Instruments

TYPICAL APPLICATIO

1.5A Single Cell Li-Ion Battery Charger

Efficiency vs Input Voltage

100

(CURVES INCLUDE

INPUT DIODE)

5V TO 22V

BAT

= 4V

0.1µF

10µF

BAT

GATE

= 3.8V

BAT

LTC4002ES8-4.2

CHARGE

STATUS

6.8µH

CHRG

SENSE

68mΩ

22µF

COMP

NTC

BAT

GND

INPUT VOLTAGE (V)

0.47µF

Li-Ion

4002 TA02

BATTERY

2.2k

10k

NTC

4002 TA01

NTC: DALE NTHS-1206N02

4002f

12 3 4 5 6 7...16

中文翻译

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与LTC4002ES8相关器件

型号	品牌	获取价格	描述	数据表
LTC4002ES8-4.2	Linear	获取价格	Standalone Li-Ion Switch Mode Battery Charger
LTC4002ES8-4.2#PBF	Linear	获取价格	LTC4002 - Standalone Li-Ion Switch Mode Battery Charger; Package: SO; Pins: 8; Temperature
LTC4002ES8-4.2#TR	Linear	获取价格	LTC4002 - Standalone Li-Ion Switch Mode Battery Charger; Package: SO; Pins: 8; Temperature
LTC4002ES8-8.4	Linear	获取价格	Standalone Li-Ion Switch Mode Battery Charger
LTC4002ES8-8.4#PBF	Linear	获取价格	LTC4002 - Standalone Li-Ion Switch Mode Battery Charger; Package: SO; Pins: 8; Temperature
LTC4002ES8-8.4#TR	Linear	获取价格	LTC4002 - Standalone Li-Ion Switch Mode Battery Charger; Package: SO; Pins: 8; Temperature
LTC4002ES8-8.4#TRPBF	Linear	获取价格	LTC4002 - Standalone Li-Ion Switch Mode Battery Charger; Package: SO; Pins: 8; Temperature
LTC4006	Linear	获取价格	4A, High Efficiency, Standalone Li Battery Charger
LTC4006	ADI	获取价格	4A、高效率、独立型锂离子电池充电器
LTC4006_1	Linear	获取价格	4A, High Efficiency, Standalone Li-Ion Battery Charger

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