Datasheet > AS3020

AS3020

更新时间： 2024-11-24 07:08:03

品牌	Logo	应用领域
其他 - ETC		电池
页数	文件大小	规格书
10页	305K
描述
800mA Linear Battery Charger In SOT23-5LPackage

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中文翻译

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AS3020 数据手册

AS3020

800mA Linear Battery Charger

In SOT23-5LPackage

DESCRIPTION

FEATURES

AS3020 is a complete constant - current and

constant-voltage linear charger for single cell

lithium-ion and Lithium-Polymer batteries. Its

SOT23-5L Package and low external component

count make AS3020 ideally suited for portable

applications. Furthermore the AS3020 is specifically

designed to work within USB power specification. At

the same time AS3020 can also be used in the

standalone lithium-ion and Lithium-polymer battery

charger.

Programmable Charge Current Up to 800mA

No MOSFET, Sense Resistor or Blocking Diode

Required

Constant-Current/Constant-Voltage Operation

with Thermal Protection to Maximize Charge

Rate without Risk of Overheating

Charges Single Cell Li-Ion Batteries Directly

from USB Port

Press 4.2V Charge Voltage with ± 1% Accuracy

25μA. Supply Current in Shutdown

2.9V Trickle Charge Threshold

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 A3020 automatically terminates the

charge cycle when the charge current drops to

1/10th the programmed value after the final float

voltage is reached.

Available Without Trickle Charge

Soft-Start Limits Inrush Current

Available in SOT23-5L Package

APPLICATIONS

Cellular Telephones,

PDA’s, MP3 Players

Charging Docks and Cradles

Bluetooth Applications

“ANI” and “ANISEM” is Trademarks of ANISEM Semiconductor, Inc.

When the input supply (wall adapter or USB supply)

is removed the AS3020 automatically enters a low

current stagedropping the battery drain current to

less than 2μA. The AS3020 can be put into

shutdown mode reducing the supply current to 25μA.

Other features include charge current monitor,

undervoltage lockout, automatic recharge and a

status pin to indicate termination and the presence of

an input voltage.

TYPICAL APPLICATION

VIN

4.5V to 6.5V

VCC

LED

AS3020

BAT

330

4.2V

Li-lon

Batery

ORDER INFORMATION

PROG

Part Number

Operating Temperature

CHRG

1.65K

AS3020EGT

-40°C to 85°C

GND

EVALUATION BOARD

Board Number

Dimensions

50^mmX x 50^mmY x 1.4^mm

EV3020EG-00A

AS3020 Rev.1.6

10/25/2009

www.anisem.com

ANISEM Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.

12 3 4 5 6 7...10

中文翻译

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AS30-221K	ALLIED	获取价格	General Purpose Inductor, 220uH, 10%, 1 Element, AXIAL LEADED
AS30-221K-RC	ALLIED	获取价格	Axial Shielded Inductors
AS30-221K-RC-TR	ALLIED	获取价格	General Purpose Inductor, 220uH, 10%, 1 Element, AXIAL LEADED, ROHS COMPLIANT
AS30-222K-RC	ALLIED	获取价格	Axial Shielded Inductors
AS3024	VISHAY	获取价格	PASSIVATED ANISOTROPIC RECTIFIER TECHNOLOGY
AS30-270K	ALLIED	获取价格	General Purpose Inductor, 27uH, 10%, 1 Element, AXIAL LEADED
AS30-270K-RC	ALLIED	获取价格	Axial Shielded Inductors
AS30-271K	ALLIED	获取价格	General Purpose Inductor, 270uH, 10%, 1 Element, AXIAL LEADED

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