Datasheet > A4051MP8R

A4051MP8R

更新时间： 2024-09-14 01:15:35

品牌	Logo	应用领域
创瑞 - AITSEMI		/
页数	文件大小	规格书
10页	413K
描述
BATTERY MANAGEMENT

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A4051MP8R 数据手册

A4051

BATTERY MANAGEMENT

AiT Semiconductor Inc.

www.ait-ic.com

1A LINEAR LI-ION BATTERY CHARGER

DESCRIPTION

FEATURES

The A4051 is a complete constant current & constant

voltage linear charger for single cell lithium-ion

batteries. Its PSOP package and low external

component count make the A4051 ideally suited for

portable applications. Furthermore, the A4051 is

specifically designed to work within USB power

specifications.

No external sense resistor is needed, and no blocking

diode is required due to the internal MOSFET

architecture. Thermal feedback regulates the charge

current to limit the die temperature during high power

operation or high ambient temperature. The charge

voltage is fixed at 4.2V, and the charge current can

be programmed externally with a single resistor. The

A4051 automatically terminates the charge cycle

when the charge current drops to 1/10^ththe

programmed value after the final float voltage is

reached.



Programmable Charge Current Up to 1000mA

No MOSFET, Sense Resistor or Blocking Diode

Required

Complete Linear Charger in PSOP Package for

single Cell Lithium-Ion Batteries

Constant-Current/Constant-Voltage Operation

with Thermal Regulation to Maximize Charge

Rate Without Risk of Overheating

Charges Single Cell Li-Ion Batteries Directly

from USB Port

Preset 4.2V Charge Voltage

Charge Current Monitor Output for Gas Gauging

Automatic Recharge

Charge state pairs of output, no battery and fault

status display

C/10 Charge Termination



50uA Supply Current in Shutdown

2.9V Trickle Charge Threshold

Soft-Start Limits Inrush Current

Battery temperature monitoring function

Available in PSOP8 Package

When the input supply (wall adapter or USB supply)

is removed, the A4051 automatically enters a low

current state, dropping the battery drain current to

less than 2uA. The A4051 can be put into shutdown

mode, reducing the supply current to 50uA.

APPLICATION

Other features include Battery temperature monitor,

under-voltage lockout, automatic recharge and two

status pins to indicate charge and charge termination.



Cellular Telephones, PDAs, MP3 /MP4 Players

Charging Docks and Cradles

Bluetooth 、GPS Applications

The A4051 is available in PSOP8 Package

TYPICAL APPLICATION

ORDERING INFORMATION

Package Type

Part Number

A4051MP8R

A4051MP8VR

PSOP8

SPQ: 4,000pcs/Reel

MP8

V: Halogen free package

R: Tape & Reel

Note

AiT provides all RoHS products,

REV1.3

- JUN 2010 RELEASED, APR 2017 UPDATED -

- 1 -

12 3 4 5 6 7...10

中文翻译

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与A4051MP8R相关器件

型号	品牌	获取价格	描述	数据表
A4051MP8VR	AITSEMI	获取价格	BATTERY MANAGEMENT
A4052	AITSEMI	获取价格	BATTERY MANAGEMENT
A405-2	AMPHENOL	获取价格	Circular Connector, 4 Contact(s), Aluminum Alloy, Female, Receptacle,
A4052MP8R	AITSEMI	获取价格	BATTERY MANAGEMENT
A4052MP8VR	AITSEMI	获取价格	BATTERY MANAGEMENT
A4053	AITSEMI	获取价格	1A LINEAR LI-ION BATTERY CHARGER
A405-3	AMPHENOL	获取价格	Circular Connector, 4 Contact(s), Aluminum Alloy, Male, Plug,
A4053MSP8R	AITSEMI	获取价格	1A LINEAR LI-ION BATTERY CHARGER
A4053MSP8VR	AITSEMI	获取价格	1A LINEAR LI-ION BATTERY CHARGER
A405-4	AMPHENOL	获取价格	Circular Connector, 4 Contact(s), Aluminum Alloy, Female, Plug,

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