Datasheet > LTC4061-4.4

LTC4061-4.4

更新时间： 2024-09-24 03:58:11

品牌	Logo	应用领域
凌特 - Linear		电池
页数	文件大小	规格书
20页	397K
描述
Standalone Linear Li-Ion Battery Charger with Thermistor Input

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LTC4061-4.4 数据手册

LTC4061-4.4

Standalone Linear Li-Ion Battery

Charger with Thermistor Input

DESCRIPTIO

FEATURES

The LTC^®4061-4.4 is a full-featured, ﬂexible, standalone

linearchargerforsingle-cell4.375VLithium-Ionbatteries.It

is capable of operating within USB power speciﬁcations.

■

Charge Current Programmable Up to 1A

■

Charges Single-Cell Li-Ion Batteries Directly from

USB Port

■

Preset 4.375V Float Voltage with ±0.4% Accuracy

Both programmable time and programmable current

based termination schemes are available. Furthermore,

the CHRG open-drain status pin can be programmed to

indicate the battery charge state according to the needs

of the application. Additional safety features designed to

maximize battery lifetime and reliability include NTC bat-

tery temperature sensing and the SmartStart charging

algorithm.

■

Thermistor Input for Temperature Qualiﬁed

Charging

Input Supply Present Logic Output

■

Thermal Regulation Maximizes Charge Rate

Without Risk of Overheating

■

Programmable Charge Current Detection/

Termination

■

Programmable Charge Termination Timer

■

No external sense resistor or external blocking diode is

required for charging due to the internal MOSFET archi-

tecture. Internal thermal feedback regulates the charge

currenttomaintainaconstantdietemperatureduringhigh

power operation or high ambient temperature conditions.

The charge current is programmed with an external resis-

tor. With power applied, the LTC4061-4.4 can be put into

shutdown mode to reduce the supply current to 20µA and

the battery drain current to less than 5µA.

Smart Pulsing Error Feature

SmartStart^TMProlongs Battery Life

20µA Charger Quiescent Current in Shutdown

Available in a Low Proﬁle (0.75mm) 10-Lead

(3mm × 3mm) DFN Package

APPLICATIO S

■

Handheld Computers

Portable MP3 Players

Digital Cameras

Other features include smart recharge, USB C/5 cur-

rent programming input, undervoltage lockout and AC

Present logic output.

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

SmartStart is a trademark of Linear Technology Corporation.

All other trademarks are the property of their respective owners.

Protected by U.S. Patents, including 6522118.

Complete Charge Cycle (1100mAh Battery)

TYPICAL APPLICATIO

900

800

700

600

500

400

300

200

100

4.5

4.4

4.3

4.2

4.1

4.0

3.9

3.8

3.7

3.6

800mA Single-Cell Li-Ion Battery Charger

(C/10 Termination)

800mA

BATTERY

VOLTAGE

BAT

4.5V TO 8V

1µF

CHRG

LTC4061-4.4

BATTERY

CURRENT

C/5

4.4V

SINGLE-CELL

Li-Ion BATTERY*

TIMER

PROG

ACPR

NTC

DET

*SANYO BATTERIES:

UF553436T OR

UF553450T

= 5V

GND

619Ω

= 25°C

0.5

1.0

1.5

2.0

2.5

40614.4 TA01a

TIME (HOURS)

40614.4 TA01b

406144fb

12 3 4 5 6 7...20

中文翻译

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与LTC4061-4.4相关器件

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LTC4061EDD	Linear	获取价格	Standalone Linear Li-lon Battery Charger with Thermistor Input
LTC4061EDD#TRPBF	Linear	获取价格	LTC4061 - Standalone Linear Li-Ion Battery Charger with Thermistor Input; Package: DFN; Pi
LTC4061EDD-4.4	Linear	获取价格	Standalone Linear Li-Ion Battery Charger with Thermistor Input
LTC4061EDD-4.4#PBF	Linear	获取价格	LTC4061-4.4 - Standalone Linear Li-Ion Battery Charger with Thermistor Input; Package: DFN
LTC4061EDD-4.4#TRPBF	Linear	获取价格	LTC4061-4.4 - Standalone Linear Li-Ion Battery Charger with Thermistor Input; Package: DFN
LTC4062	Linear Systems	获取价格	Standalone 250mA Li-Ion Battery Charger in 2
LTC4062	Linear	获取价格	Standalone Linear Li-Ion Battery Charger with Micropower Comparator
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LTC4062EDD	Linear	获取价格	Standalone Linear Li-Ion Battery Charger with Micropower Comparator
LTC4062EDD#TRPBF	Linear	获取价格	LTC4062 - Standalone Linear Li-Ion Battery Charger with Micropower Comparator; Package: DF

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