MAX8903A

更新时间： 2024-01-03 10:46:18

品牌	Logo	应用领域
美信 - MAXIM		监控
页数	文件大小	规格书
30页	1298K
描述
2A 1-Cell Li DC-DC Chargers for USB and Adapter Power Thermistor Monitor

阅读下载

获取价格

技术参数
数据手册

如果您发现信息不准确，欢迎纠错

MAX8903A 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：	20 weeks
风险等级：	1.63	Is Samacsys：	N
可调阈值：	NO	模拟集成电路 - 其他类型：	POWER SUPPLY SUPPORT CIRCUIT
JESD-30 代码：	S-XQCC-N28	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

MAX8903A 数据手册

19-4410; Rev 4; 5/11

2A 1-Cell Li+ DC-DC Chargers for USB

and Adapter Power

MX8903A–EGHJ/Y

General Description

Features

o Efficient DC-DC Converter Eliminates Heat

The MAX8903A–MAX8903E/MAX8903G/MAX8903H/

MAX8903J/MAX8903Y are integrated 1-cell Li+ charg-

ers and Smart Power Selectors™ 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.

o 4MHz Switching for Tiny External Components

o Instant On—Works with No/Low Battery

o Dual Current-Limiting Inputs—AC Adapter or USB

Automatic Adapter/USB/Battery Switchover to

Support Load Transients

50mΩ System-to-Battery Switch

Supports USB Spec

o Thermistor Monitor

o Integrated Current-Sense Resistor

o No External MOSFETs or Diodes

o 4.1V to 16V Input Operating Voltage Range

The MAX8903_ 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 cur-

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

tection, while the USB input has a range of 4.1V to 6.3V

with up to 8V protection.

Ordering Information

PART

TEMP RANGE

-40°C to +85°C

PIN-PACKAGE

28 Thin QFN-EP*

MAX8903AETI+T

MAX8903BETI+T

MAX8903CETI+T

MAX8903DETI+T

MAX8903EETI+T

MAX8903GETI+T

MAX8903HETI+T

MAX8903JETI+T**

MAX8903YETI+T

The MAX8903_ 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 MAX8903_ is available in a 4mm x 4mm, 28-pin

thin QFN package.

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

*EP = Exposed pad.

**Future product—contact factory for availability.

T = Tape and reel.

Typical Operating Circuit

The various versions of the MAX8903_ allow for design

flexibility to choose key parameters such as system

regulation voltage, battery prequalification threshold,

and battery regulation voltage. The MAX8903B/

MAX8903E/MAX8903G also includes power-enable on

battery detection. See the Selector Guide section for

complete details.

ADAPTER

OR USB

SYS

LOAD

CURRENT

CHARGE

CURRENT

CHARGE

AND

SYS LOAD

SWITCH

SYSTEM

LOAD

Applications

PDAs, Palmtops, and

Wireless Handhelds

Portable Multimedia

Players

PWM

STEP-DOWN

Personal Navigation

Devices

Smart Cell Phones

Mobile Internet Devices

Ultra Mobile PCs

BAT

BATTERY

USB

MAX8903_

GND

Selector Guide appears at end of data sheet.

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...30

下载PDF

与MAX8903A相关器件

型号	品牌	描述	获取价格	数据表
MAX8903A_11	MAXIM	2A 1-Cell Li DC-DC Chargers for USB and Adapter Power Thermistor Monitor	获取价格
MAX8903A_13	MAXIM	2A 1-Cell Li DC-DC Chargers for USB and Adapter Power	获取价格
MAX8903AETI	MAXIM	2A 1-Cell Li DC-DC Chargers for USB and Adapter Power Thermistor Monitor	获取价格
MAX8903AETI+	MAXIM	2A 1-Cell Li DC-DC Charger for USB* and Adapter Power	获取价格
MAX8903AETI+T	MAXIM	Power Supply Support Circuit, Fixed, 1 Channel, BICMOS, 4 X 4 MM, 0.75 MM HEIGHT, ROHS COM	获取价格
MAX8903AETIT	MAXIM	2A 1-Cell Li DC-DC Chargers for USB and Adapter Power Thermistor Monitor	获取价格

产品中心

服务支持

精选活动

关于我们

帮助中心

MAX8903A

MAX8903A 技术参数

MAX8903A 数据手册

与MAX8903A相关器件

与MAX8903A相关文章

您还可以找

产品中心

服务支持

精选活动

关于我们

帮助中心

MAX8903A

MAX8903A 技术参数

MAX8903A 数据手册

与MAX8903A相关器件

与MAX8903A相关文章

您还可以找

您在本页遇到什么问题？