LM3658

更新时间： 2024-11-05 11:07:55

品牌	Logo	应用领域
德州仪器 - TI		便携式电源管理电路电源电路
页数	文件大小	规格书
21页	869K
描述
用于便携式应用的双电源 USB/AC 锂化学充电器 IC

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LM3658 数据手册

LM3658

www.ti.com

SNVS328E –MAY 2005–REVISED MARCH 2007

LM3658 Dual Source USB/AC Li Chemistry Charger IC for Portable Applications

Check for Samples: LM3658

FEATURES

DESCRIPTION

The LM3658 is a single chip charger IC designed for

handheld applications. It can safely charge and

maintain a single cell Li-Ion/Polymer battery operating

from an AC wall adapter or USB power source. Input

power source selection of USB/AC is automatic. With

both power sources present, the AC power source

has priority. Charge current is programmed through

an external resistor when operating from an AC wall

adapter allowing charge currents from 50 mA to 1000

mA. When the battery is charged using USB power,

charge currents of 100 mA or 500 mA are pin-

selectable. The termination voltage is controlled to

within ±0.35% of 4.2V.

•

Integrated Power FETs with Thermal

Regulation

•

Charges from Either an AC Wall Adapter or

USB Power Source with Automatic Source

Selection

•

50 mA to 1000 mA Charge Currents Using AC

Wall Adapter

Pin-Selectable USB Charge Currents of 100

mA or 500 mA

LDO Mode with 1A of Source Current is

Automatically Invoked When the Battery is

Absent and the AC Wall Adapter is Connected

The LM3658 requires few external components and

integrates internal power FETs, reverse current

protection and current sensing. The internal power

FETs are thermally regulated to obtain the most

•

Continuous Battery Temperature Monitoring

Built-in Multiple Safety Timers

Charge Status Indication

efficient charging rate for

temperature.

given ambient

Continuous Over-current and Temperature

Protection

The LM3658 operates in five modes: pre-qualification

mode, constant-current mode, constant-voltage

mode, top-off mode and maintenance mode.

Additionally, the charger IC operates as a linear

regulator in “LDO mode”, when the AC wall adapter is

connected and no battery is present. Optimal battery

management is obtained through thermal regulation,

battery temperature measurement and multiple safety

timers. The LM3658 provides two open-drain outputs

for LED status indication or connection to GPIOs.

•

Near-depleted Battery Pre-conditioning

Sleep Mode with Ultra Low Quiescent Current

On-board Kelvin-sensing Achieves ±0.35%

Termination Accuracy

•

Maintenance Mode with Automatic Recharge

Thermally Enhanced 3 mm x 3 mm WSON

Package

APPLICATIONS

Typical Application

•

Smartphones

CHG_IN

4.5V to 6V

Digital Still Cameras

PDAs

BATT

1 mF

Battery

Pack

Hard Drive and Flash-based MP3 Players

USB-powered Devices

USBpwr

4.5V to 6V

LM3658

Iset

GND

USB_sel

EN_b

Stat1

Stat2

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

All trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

12 3 4 5 6 7...21

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与LM3658相关器件

型号	品牌	获取价格	描述	数据表
LM3658SD	NSC	获取价格	Dual Source USB/AC Li Chemistry Charger IC for Portable Applications
LM3658SD	TI	获取价格	LM3658 Dual Source USB/AC Li Chemistry Charger IC for Portable Applications
LM3658SD/NOPB	TI	获取价格	LM3658 Dual Source USB/AC Li Chemistry Charger IC for Portable Applications
LM3658SD-A	TI	获取价格	LM3658 Dual Source USB/AC Li Chemistry Charger IC for Portable Applications
LM3658SD-A/NOPB	TI	获取价格	LM3658 Dual Source USB/AC Li Chemistry Charger IC for Portable Applications
LM3658SD-B	TI	获取价格	LM3658 Dual Source USB/AC Li Chemistry Charger IC for Portable Applications
LM3658SD-B/NOPB	TI	获取价格	LM3658 Dual Source USB/AC Li Chemistry Charger IC for Portable Applications
LM3658SDX	NSC	获取价格	Dual Source USB/AC Li Chemistry Charger IC for Portable Applications
LM3658SDX	TI	获取价格	LM3658 Dual Source USB/AC Li Chemistry Charger IC for Portable Applications
LM3658SDX/NOPB	TI	获取价格	LM3658 Dual Source USB/AC Li Chemistry Charger IC for Portable Applications

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