Datasheet > LTC4067

LTC4067

更新时间： 2024-09-16 14:58:15

品牌	Logo	应用领域
亚德诺 - ADI		电池
页数	文件大小	规格书
20页	227K
描述
具 OVP 功能的 USB 电源管理器和锂离子 / 锂聚合物电池充电器

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中文翻译

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LTC4067 数据手册

LTC4067

USB Power Manager

with OVP and

Li-Ion/Polymer Charger

DESCRIPTIO

FEATURES

Programmable Input Current Limit:

The LTC^®4067 is a USB power management and Li-Ion/

Polymer battery charger designed for portable battery

powered applications. The part controls total current used

by the USB peripheral for operation and battery charging.

The total input current may be left unregulated, or it may

be limited to 20% or 100% of the programmed value up

to 1.5A (typically 500mA). Battery charge current is au-

tomatically reduced such that the sum of the load current

and the charge current does not exceed the programmed

input current.

■

Single Resistor at CLPROG Pin to Set and Monitor

Input Current

Battery Charger/Ideal Diode/Controller:

■

13V Overvoltage Protection

■

Full Featured Battery Charger with 4.2V Float

■

Up to 1.25A Programmable Charge Current

■

Thermal Regulation Maximizes Charge Current

Without Risk of Overheating

■

Internal 2 Hour Termination Timer from Onset of

Voltage Mode Charging

With the addition of an external P-channel MOSFET the

LTC4067 can withstand voltages up to 13V.

■

Automatic Load Switchover to Battery Power with

Internal Ideal Diode and Drive Output for Optional

External MOSFET

The LTC4067 includes a complete constant current/con-

stant voltage linear charger for single cell Li-Ion batteries.

The ﬂoat voltage applied to the battery is held to a tight

0.4% tolerance, and charge current is programmed using

an external resistor to ground. An end-of-charge status

output, CHRG, indicates full charge. Also featured is an

NTCthermistorinputusedtomonitorbatterytemperature

while charging.

■

NTC Thermistor Input

■

Bad Battery Time-Out Detection

4mm × 3mm 12-Lead DFN Package

■

APPLICATIO S

■

Automatic Battery Charging/Load Switchover

■

Backup Battery Charger

The LTC4067 is available in a 12-lead low proﬁle 4mm ×

3mm DFN package.

■

Uninterrupted Supplies

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

All other trademarks are the property of their respective owners.

TYPICAL APPLICATIO

OVP Response to Ramp Input at OVI

LOAD

OVI

OUT

WALL

USB

10nF

OVI

10μF

5V/DIV

OVP

5V TO 12V

BAT

500mA/DIV

1μF

10μF

1-CELL

Li-Ion

LTC4067

OUT

5V/DIV

= 4.2V

BAT

IN(MAX)

CHRG

PROG

LIM0

LIM1

LIM0

OVP

5V/DIV

LIM1

O (SUSPEND)

4067 TA01b

200V/R

1ms/DIV

CLPROG

GND

1000V/R

CLPROG

4067 TA01

FIXED (2A)

4067f

12 3 4 5 6 7...20

中文翻译

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与LTC4067相关器件

型号	品牌	获取价格	描述	数据表
LTC4067EDE	Linear	获取价格	USB Power Manager with OVP and Li-Ion/Polymer Charger
LTC4067EDE#TRPBF	Linear	获取价格	暂无描述
LTC4068-4.2	Linear	获取价格	Standalone Linear Li-Ion Battery Charger with Programmable Termination
LTC4068-4.2	ADI	获取价格	具可编程终止功能的独立型线性锂离子电池充电器
LTC4068EDD-4.2	Linear	获取价格	Standalone Linear Li-Ion Battery Charger with Programmable Termination
LTC4068EDD-4.2#TR	Linear	获取价格	LTC4068-4.2 - Standalone Linear Li-Ion Battery Charger with Programmable Termination; Pack
LTC4068EDD-4.2#TRPBF	Linear	获取价格	LTC4068-4.2 - Standalone Linear Li-Ion Battery Charger with Programmable Termination; Pack
LTC4068X-4.2	Linear	获取价格	Standalone Linear Li-Ion Battery Charger with Programmable Termination
LTC4068X-4.2_15	Linear	获取价格	Standalone Linear Li-Ion Battery Charger with Programmable Termination
LTC4068XEDD-4.2	Linear	获取价格	Standalone Linear Li-Ion Battery Charger with Programmable Termination

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