Datasheet > LTC4001-1

LTC4001-1

更新时间： 2023-12-20 18:46:18

品牌	Logo	应用领域
亚德诺 - ADI		电池
页数	文件大小	规格书
20页	230K
描述
2A 同步降压型锂离子电池充电器

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中文翻译

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数据手册

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LTC4001-1 数据手册

LTC4001-1

2A Synchronous

Buck Li-Ion Charger

FEATURES

DESCRIPTION

TheLTC^®4001-1isa2ALi-Ionbatterychargerintendedfor

5V wall adapters. It utilizes a 1.5MHz synchronous buck

converter topology to reduce power dissipation during

charging. Low power dissipation, an internal MOSFET and

sense resistor allow a physically small charger that can be

embedded in a wide range of handheld applications. The

LTC4001-1includescompletechargeterminationcircuitry,

automatic recharge and a 1ꢀ 4.1V ꢁoat voltage. Input

short-circuit protection is included so no blocking diode

is required.

Low Power Dissipation

2A Maximum Charge Current

No External MOSFETs, Sense Resistor or

Blocking Diode Required

Remote Sensing at Battery Terminals

Programmable Charge Termination Timer

Preset 4.1V Float Voltage with 0.5ꢀ Accuracy

4.1V Float Voltage Improves Battery Life and High

Temperature Safety Margin

Programmable Charge Current Detection/

Termination

Automatic Recharge

This 4.1V version of the standard LTC4001 is intended

for applications which will be operated or stored above

approximately 60°C. Under these conditions, the reduced

ꢁoatvoltagewilltrade-offinitialcellcapacityforthebeneﬁt

ofincreasedcapacityretentionoverthelifeofthebattery.A

reduced ꢁoat voltage also minimizes swelling in prismatic

and polymer cells, and avoids open CID (pressure fuse)

in cylindrical cells.

Thermistor Input for Temperature Qualiﬁed

Charging

Compatible with Current Limited Wall Adapters

Low Proﬁle 16-Lead (4mm × 4mm) QFN Package

APPLICATIONS

Handheld Battery-Powered Devices

Battery charge current, charge timeout and end-of-charge

indication parameters are set with external components.

Additionalfeaturesincludeshortedcelldetection,tempera-

ture qualiﬁed charging and overvoltage protection. The

LTC4001-1 is available in a low proﬁle (0.75mm) 16-lead

(4mm × 4mm) QFN package.

Handheld Computers

Charging Docks and Cradles

Digital Cameras

Smart Phones

L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other

trademarks are the property of their respective owners.

TYPICAL APPLICATION

Power Loss vs V_BAT

Charging (PWM Mode)

2A Single Cell Li-Ion Battery Charger

1.5μH

1.25

1.00

0.75

0.50

0.25

SENSE

BATSENS

BAT

INSENSE

4.5V TO 5.5V

4.1V

Li-Ion

10μF

PGND

LTC4001-1

CHRG

NTC

FAULT

= 5V

2A CHARGER

PROG IDET TIMER

SS GNDSENS

3.25

3.5

3.75

(V)

4.25

0.22μF

0.1μF

BAT

40011 TA01b

274Ω

40011 TA01a

40011fa

12 3 4 5 6 7...20

中文翻译

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与LTC4001-1相关器件

型号	品牌	获取价格	描述	数据表
LTC4001EUF	Linear	获取价格	2A Synchronous Buck Li-Ion Charger
LTC4001EUF#PBF	Linear	获取价格	LTC4001 - 2A Synchronous Buck Li-Ion Charger; Package: QFN; Pins: 16; Temperature Range: -
LTC4001EUF#TRPBF	Linear	获取价格	LTC4001 - 2A Synchronous Buck Li-Ion Charger; Package: QFN; Pins: 16; Temperature Range: -
LTC4001EUF-1#TRPBF	Linear	获取价格	LTC4001-1 - 2A Synchronous Buck Li-Ion Charger; Package: QFN; Pins: 16; Temperature Range:
LTC4001EUF-1-PBF	Linear	获取价格	2A Synchronous Buck Li-Ion Charger
LTC4001EUF-1-TRPBF	Linear	获取价格	2A Synchronous Buck Li-Ion Charger
LTC4002	Linear	获取价格	Standalone Linear Li-lon Battery Charger with Thermistor Input
LTC4002-4.2	Linear	获取价格	Standalone Li-Ion Switch Mode Battery Charger
LTC4002EDD	Linear	获取价格	Standalone Li-Ion Switch Mode Battery Charger
LTC4002EDD-4.2	Linear	获取价格	Standalone Li-Ion Switch Mode Battery Charger

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