LTC4062

更新时间： 2024-09-24 04:43:39

品牌	Logo	应用领域
凌特 - Linear		电池比较器
页数	文件大小	规格书
20页	176K
描述
Standalone Linear Li-Ion Battery Charger with Micropower Comparator

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LTC4062 数据手册

LTC4062

Standalone Linear Li-Ion

Battery Charger with

Micropower Comparator

FEATURES

DESCRIPTIO

The LTC^®4062 is a full-featured, flexible, standalone linear

charger for single-cell Lithium-Ion batteries. 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 Float Voltage with ±0.35% Accuracy

Bothprogrammabletimeandprogrammablecurrentbased

terminationschemesareavailable.Furthermore,theCHRG

open-drain status pin can be programmed to indicate the

battery charge state according to the needs of the applica-

tion. A precise low power comparator is available even

with no power applied as long as battery voltage is higher

than 2.5V. Additional safety features designed to maxi-

mize battery lifetime and reliability include the SmartStart

charging algorithm.

■

Micropower Comparator for Battery Monitoring

Thermal Regulation Maximizes Charge Rate

Without Risk of Overheating*

■

Programmable Charge Current Detection/

Termination

■

Programmable Charge Termination Timer

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

No external sense resistor or external blocking diode is

requiredforchargingduetotheinternalMOSFETarchitec-

ture. Internal thermal feedback regulates the charge cur-

rent to maintain a constant die temperature during high

power operation or high ambient temperature conditions.

The charge current is programmed with an external resis-

tor. With power applied, the LTC4062 can be put into

shutdown mode to reduce the supply current to 20µA and

the battery drain current to less than 2µA. Without power

applied, the internal low power comparator can work

sinking only 10µA from the battery.

APPLICATIO S

■

Handheld Computers

■

Portable MP3 Players

■

Digital Cameras

, LTC and LT 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.

Other features include smart recharge, USB C/5 current

programming input and undervoltage lockout.

TYPICAL APPLICATIO

Complete Charge Cycle (1100mAh Battery)

900

800

700

600

500

400

300

200

100

4.3

4.2

4.1

4.0

3.9

3.8

3.7

3.6

3.5

3.4

800mA Single Cell Li-Ion Battery Charger

(C/10 Termination)

4.3V TO 8V

OUT

BAT

BAT > 3V BAT < 3V

800mA

LTC4062

100k

715k

347k

C/5

TIMER

PROG

BATTERY

CURRENT

BATTERY

VOLTAGE

1µF

DET

SINGLE CELL

Li-Ion BATTERY

GND

619Ω

= 5V

= 25°C

4062 TA01

0.5

1.0

1.5

2.0

2.5

3.0

TIME (HOURS)

4062 TA01b

4062f

12 3 4 5 6 7...20

中文翻译

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与LTC4062相关器件

型号	品牌	获取价格	描述	数据表
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
LTC4063	Linear	获取价格	Standalone Linear Li-lon Battery Charger with Thermistor Input
LTC4063	Linear Systems	获取价格	Standalone 250mA Li-Ion Battery Charger in 2
LTC4063	ADI	获取价格	具有微功率低压降线性稳压器的独立型线性锂离子电池充电器
LTC4063EDD	Linear	获取价格	LTC4063 - Standalone Linear Li-Ion Charger with Micropower Low Dropout Linear Regulator; P
LTC4063EDD#PBF	Linear	获取价格	LTC4063 - Standalone Linear Li-Ion Charger with Micropower Low Dropout Linear Regulator; P
LTC4063EDD#TR	Linear	获取价格	暂无描述
LTC4063EDD#TRPBF	Linear	获取价格	LTC4063 - Standalone Linear Li-Ion Charger with Micropower Low Dropout Linear Regulator; P
LTC4064	Linear	获取价格	Monolithic Linear Charger for Back-Up Li-Ion Batteries

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