MAX8903AETI+

更新时间： 2024-11-09 12:49:55

品牌	Logo	应用领域
美信 - MAXIM		电源电路电源管理电路信息通信管理 PC
页数	文件大小	规格书
20页	592K
描述
2A 1-Cell Li DC-DC Charger for USB* and Adapter Power

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技术参数
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MAX8903AETI+ 技术参数

是否无铅：	不含铅	是否Rohs认证：	符合
生命周期：	Active	零件包装代码：	QFN
包装说明：	HVQCCN, LCC28,.16SQ,16	针数：	28
Reach Compliance Code：	compliant	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	Factory Lead Time：	6 weeks
风险等级：	0.77	Samacsys Confidence：	3
Samacsys Status：	Released	Samacsys PartID：	388246
Samacsys Pin Count：	29	Samacsys Part Category：	Integrated Circuit
Samacsys Package Category：	Quad Flat No-Lead	Samacsys Footprint Name：	28 TQFN-EP-[T2844-1]
Samacsys Released Date：	2017-01-11 21:24:41	Is Samacsys：	N
可调阈值：	YES	模拟集成电路 - 其他类型：	POWER SUPPLY SUPPORT CIRCUIT
JESD-30 代码：	S-XQCC-N28	JESD-609代码：	e3
长度：	4 mm	湿度敏感等级：	1
信道数量：	1	功能数量：	1
端子数量：	28	最高工作温度：	85 °C
最低工作温度：	-40 °C	封装主体材料：	UNSPECIFIED
封装代码：	HVQCCN	封装等效代码：	LCC28,.16SQ,16
封装形状：	SQUARE	封装形式：	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
峰值回流温度（摄氏度）：	NOT SPECIFIED	电源：	5 V
认证状态：	Not Qualified	座面最大高度：	0.8 mm
子类别：	Power Management Circuits	最大供电电流 (Isup)：	4 mA
最大供电电压 (Vsup)：	16 V	最小供电电压 (Vsup)：	4.15 V
标称供电电压 (Vsup)：	5 V	表面贴装：	YES
技术：	BICMOS	温度等级：	INDUSTRIAL
端子面层：	Matte Tin (Sn)	端子形式：	NO LEAD
端子节距：	0.4 mm	端子位置：	QUAD
处于峰值回流温度下的最长时间：	NOT SPECIFIED	宽度：	4 mm
Base Number Matches：	1

MAX8903AETI+ 数据手册

19-4410; Rev 0; 12/08

2A 1-Cell Li+ DC-DC Charger for USB*

and Adapter Power

MX8903A

General Description

Features

The MAX8903A is an integrated 1-cell Li+ charger and

Smart Power Selector™ with dual (AC adapter and

USB) power inputs. The switch mode charger uses a

high switching frequency to eliminate heat and allow

tiny external components. It can operate with either

separate inputs for USB and AC adapter power, or from

a single input that accepts both. All power switches for

charging and switching the load between battery and

external power are included on-chip. No external

MOSFETs, blocking diodes, or current-sense resistors

are required.

♦ Efficient DC-DC Converter Eliminates Heat

♦ 4MHz Switching for Tiny External Components

♦ Instant On—Works with No Battery or Low

Battery

♦ Dual Current-Limiting Input Circuits—AC Adapter

or USB

Automatic Adapter/USB/Battery Switchover to

Support Load Transients

50mΩ System-to-Battery Switch

Supports USB Spec

The MAX8903A features optimized smart power control

to make the best use of limited USB or adapter power.

Battery charge current and SYS output current limit are

independently set. Power not used by the system

charges the battery. Charge current and SYS output

current limit can be set up to 2A while USB input cur-

rent can be set to 100mA or 500mA. Automatic input

selection switches the system from battery to external

power. The DC input operates from 4.15V to 16V with

up to 20V protection, while the USB input has a range

of 4.1V to 6.3V with up to 8V protection.

♦ Thermistor Monitor

♦ Integrated Current-Sense Resistor

♦ No External MOSFETS or Diodes

♦ 4.1V to 16V Input Operating Voltage Range

Ordering Information

PART

TEMP RANGE

PIN-PACKAGE

The MAX8903A internally blocks current from the bat-

tery and system back to the DC and USB inputs when

no input supply is present. Other features include pre-

qual charging and timer, fast charge timer, overvoltage

protection, charge status and fault outputs, power-OK

monitors, and a battery thermistor monitor. In addition,

on-chip thermal limiting reduces battery charge rate

and AC adapter current to prevent charger overheat-

ing. The MAX8903A is available in a 4mm x 4mm, 28-pin

thin QFN package.

MAX8903AETI+

-40°C to +85°C

28 Thin QFN-EP**

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

**EP = Exposed pad.

Typical Operating Circuit

ADAPTER

OR USB

Applications

SYS

PDAs, Palmtops, and Wireless Handhelds

Personal Navigation Devices

Smart Cell Phones

LOAD

CURRENT

CHARGE

CURRENT

SYSTEM

LOAD

CHARGE AND

SYS LOAD

SWITCH

Portable Multimedia Players

Mobile Internet Devices

PWM

STEP-DOWN

Ultra Mobile PCs

BAT

BATTERY

USB

*Protected by US Patent #6,507,172.

MAX8903A

GND

Smart Power Selector is a trademark of Maxim Integrated

Products, Inc.

Pin Configuration appears 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...20

中文翻译

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MAX8903AETI+ 替代型号

型号	品牌	替代类型	描述	数据表
MAX8903AETI+T	MAXIM	完全替代	Power Supply Support Circuit, Fixed, 1 Channel, BICMOS, 4 X 4 MM, 0.75 MM HEIGHT, ROHS COM

与MAX8903AETI+相关器件

型号	品牌	获取价格	描述	数据表
MAX8903AETI+T	MAXIM	获取价格	Power Supply Support Circuit, Fixed, 1 Channel, BICMOS, 4 X 4 MM, 0.75 MM HEIGHT, ROHS COM
MAX8903AETIT	MAXIM	获取价格	2A 1-Cell Li DC-DC Chargers for USB and Adapter Power Thermistor Monitor
MAX8903AEVKIT	MAXIM	获取价格	Instant OnâWorks with No Battery or Low Bat
MAX8903AEVKIT+	MAXIM	获取价格	Instant OnâWorks with No Battery or Low Bat
MAX8903B	ADI	获取价格	2A 1节Li+电池DC-DC充电器，用于USB和适配器供电系统
MAX8903BETI	MAXIM	获取价格	2A 1-Cell Li DC-DC Chargers for USB and Adapter Power Thermistor Monitor
MAX8903BETI+T	MAXIM	获取价格	2A 1-Cell Li DC-DC Chargers for USB and Adapter Power
MAX8903BETIT	MAXIM	获取价格	2A 1-Cell Li DC-DC Chargers for USB and Adapter Power Thermistor Monitor
MAX8903C	ADI	获取价格	2A 1节Li+电池DC-DC充电器，用于USB和适配器供电系统
MAX8903CETI	MAXIM	获取价格	2A 1-Cell Li DC-DC Chargers for USB and Adapter Power Thermistor Monitor

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