MAX8900A

更新时间： 2024-11-23 11:14:27

品牌	Logo	应用领域
美信 - MAXIM		电池开关监控
页数	文件大小	规格书
35页	4773K
描述
1.2A Switch-Mode Li+ Chargers with ±22V Input Rating and JEITA Battery Temperature Monitoring

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MAX8900A 数据手册

19-5063; Rev 1; 3/10

1.2A Switch-Mode Li+ Chargers with 22V Input

Rating and JEITA Battery Temperature Monitoring

General Description

Features

S 3.25MHz Switching Li+/Li-Poly Battery Charger

The MAX8900_ is a high-frequency, switch-mode char-

ger for a 1-cell lithium ion (Li+) or lithium polymer

(Li-Poly) battery. It delivers up to 1.2A of current to the

battery from 3.4V to 6.3V (MAX8900A) or 3.4V to 8.7V

(MAX8900B). The 3.25MHz switch-mode charger is ide-

ally suited to small portable devices such as headsets

and ultra-portable media players because it minimizes

component size and heat.

S JEITA Battery Temperature Monitor Adjusts

Charge Current and Termination Voltage

S 4.2V ±±.5ꢀ Battery Regulation Voltage (Alternate

4.1V Target Available on Request)

S Adjustable Done Current Threshold

Adjustable from 1±mA to 2±±mA

±1mA Accuracy at 1±mA

Several features make the MAX8900_ perfect for high-

reliability systems. The MAX8900_ is protected against

input voltages as high as +22V and as low as -22V.

Battery protection features include low voltage prequali-

fication, charge fault timer, die temperature monitoring,

and battery temperature monitoring. The battery temper-

ature monitoring adjusts the charge current and termina-

tion voltage as described in the JEITA* specification for

safe use of secondary lithium-ion batteries.

S High-Efficiency and Low Heat

S Uses a 2.±mm x 1.6mm Inductor

S Positive and Negative Input Voltage Protection

(±22V)

S Up to +2±V Operating Range (Alternate OVLO

Ranges Available on Request)

S Supports No-Battery Operation

S Fault Timer

Charge parameters are easily adjustable with external

components. An external resistance adjusts the charge

current from 50mA to 1200mA. Another external resis-

tance adjusts the prequalification and done current

thresholds from 10mA to 200mA. The done current thresh-

old is very accurate achieving Q1mA at the 10mA level.

The charge timer is adjustable with an external capacitor.

S Charge Status Outputs

S 2.44mm x 2.67mm x ±.64mm Package

Simplified Applications Circuit

1FH

The MAX8900_ is available in a 0.4mm pitch, 2.44mm x

2.67mm x 0.64mm WLP package.

BST

Applications

Digital Cameras

GPS, PND

eBook

BAT

USB Charging

Headsets and Media

Players

2.2FF

6.3V

0603

(-22V TO +22V)

0.47FF

25V

0603

PGND

AVL

SYSTEM

LOAD

MAX8900_

Smartphones

STAT1

STAT2

STAT3

CEN

GND

THM

Li+/

Li-POLY

Ordering Information

OFF

TEMP PIN-

OPTIONS

PART

RANGE PACKAGE

PVL

INBP

= 6.5V

OVLO

1.0FF

6.3V

0.47FF

25V

SETI DNI

-40NC to

30 WLP

+85NC

T1 = 0NC

MAX89±±AEWV+T

MAX89±±BEWV+T

2-pin status

indicators

0402

0603

OVLO

= 9.0V

-40NC to

30 WLP

+85NC

T1 = -15NC

3-pin status

indicators

*JEITA (Japan Electronics and Information Technology

Industries Association) standard, “A Guide to the Safe Use

of Secondary Lithium Ion Batteries in Notebook-type Personal

Computers” April 20, 2007.

+Denotes a lead(Pb)-free/RoHS-compliant package.

T = Tape and reel.

Ordering Information continued at end of data sheet.

_______________________________________________________________ Maxim Integrated Products

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

12 3 4 5 6 7...35

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与MAX8900A相关器件

型号	品牌	获取价格	描述	数据表
MAX8900A_11	MAXIM	获取价格	1.2A Switch-Mode Li+ Chargers with ±22V Input
MAX8900AEVKIT	MAXIM	获取价格	Three Status LED Indicators
MAX8900AEVKIT+	MAXIM	获取价格	Three Status LED Indicators
MAX8900AEWV+T	MAXIM	获取价格	1.2A Switch-Mode Li+ Chargers with ±22V Input
MAX8900B	MAXIM	获取价格	1.2A Switch-Mode Li+ Chargers with ±22V Input
MAX8900B	ADI	获取价格	1.2A开关模式Li+充电器，具有±22V输入额定电压和JEITA电池温度监测
MAX8900BEWV+T	MAXIM	获取价格	1.2A Switch-Mode Li+ Chargers with ±22V Input
MAX8901	MAXIM	获取价格	Highest Efficiency Supply for 2 to 6 Series WLEDs in a 2mm x 2mm TDFN Package
MAX8901A	MAXIM	获取价格	Highest Efficiency Supply for 2 to 6 Series WLEDs in a 2mm x 2mm TDFN Package
MAX8901A	ADI	获取价格	效率最高的2至6只串联WLED供电电源，2mm x 2mm TDFN封装

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