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MAX8844ZETD+T

更新时间： 2024-11-09 13:11:07
品牌 Logo 应用领域
美信 - MAXIM 电池
页数 文件大小 规格书
17页 225K
描述
Power Management Circuit, BICMOS, PDSO14

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MAX8844ZETD+T 技术参数

是否无铅： 不含铅是否Rohs认证： 符合
生命周期：Obsolete包装说明：SON, SOLCC14,.12,16
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01Factory Lead Time：1 week
风险等级：7.36JESD-30 代码：R-PDSO-N14
JESD-609代码：e3湿度敏感等级：1
端子数量：14最高工作温度：85 °C
最低工作温度：-40 °C封装主体材料：PLASTIC/EPOXY
封装代码：SON封装等效代码：SOLCC14,.12,16
封装形状：RECTANGULAR封装形式：SMALL OUTLINE
峰值回流温度（摄氏度）：225电源：5 V
认证状态：Not Qualified子类别：Power Management Circuits
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端子形式：NO LEAD
端子节距：0.4 mm端子位置：DUAL
处于峰值回流温度下的最长时间：NOT SPECIFIEDBase Number Matches：1

MAX8844ZETD+T 数据手册

 浏览型号MAX8844ZETD+T的Datasheet PDF文件第2页浏览型号MAX8844ZETD+T的Datasheet PDF文件第3页浏览型号MAX8844ZETD+T的Datasheet PDF文件第4页浏览型号MAX8844ZETD+T的Datasheet PDF文件第5页浏览型号MAX8844ZETD+T的Datasheet PDF文件第6页浏览型号MAX8844ZETD+T的Datasheet PDF文件第7页 
19-4279; Rev 0; 3/09  
EVALUATION KIT  
AVAILABLE  
28V Dual Input Linear Li+ Battery Chargers with  
Battery Detection and Overvoltage-Protected Output  
Z/MAX84Y  
General Description  
Features  
The MAX8844Z/MAX8844Y intelligent, stand-alone con-  
stant-current, constant-voltage (CCCV), thermally regu-  
lated dual input linear chargers are designed for  
charging a single-cell lithium-ion (Li+) battery. The  
MAX8844Z/MAX8844Y integrate a current-sense circuit,  
MOSFET pass element, thermal-regulation circuitry,  
and eliminate the external reverse-blocking Schottky  
diode to create the simplest and smallest charging  
solutions for handheld equipment.  
♦ CCCV, Thermally Regulated Linear One-Cell Li+  
Battery Charger  
♦ No External MOSFET, Reverse Blocking Diode, or  
Current-Sense Resistor  
♦ Programmable Fast-Charge Currents (1A  
max)  
RMS  
♦ Programmable Top-Off Current Threshold  
♦ Input Overvoltage Protected 4.7V Output  
The IC controls the charging sequence from the pre-  
qualification state through constant current fast-charge,  
top-off charge, and full-charge indication. Proprietary  
thermal-regulation circuitry limits the die temperature  
during fast-charging or when the IC is exposed to high  
ambient temperatures, allowing maximum charging  
current without damaging the IC.  
(SAFEOUT) from IN  
♦ Input Overvoltage Protected 4.7V Output  
(SAFEUSB) from USB  
♦ Proprietary Die Temperature Regulation Control  
(+115°C)  
The MAX8844Z/MAX8844Y achieve high flexibility by pro-  
viding adjustable fast-charge currents (SETI) and an  
adjustable top-off current threshold (MIN) through external  
resistors. The IC features a booting assistant circuit that  
distinguishes input sources and battery connection and  
provides an enable signal (ABO, ABO) for system booting.  
♦ 4.25V to 28V Input Voltage Range with Input  
Overvoltage Protection Above +7.5V  
♦ Low-Dropout Voltage (300mV at 500mA)  
♦ Input Power-Source Detection Output (POK),  
Charge Status Output (CHG), Charge-Enable Input  
(EN)  
The ICs also integrate two input overvoltage-protected  
LDO outputs (SAFEOUT, SAFEUSB) for low-voltage-  
rated USB or charger inputs in system, and a battery  
pack detection circuit (DETBAT) that disables the charg-  
er when the battery pack is absent. Other features  
include an active-low control input (EN), an active-low  
input power source detection output (POK), and a fully  
charged top-off threshold detection output (CHG).  
♦ Output for Autobooting (ABO, MAX8844Z)  
♦ Output for Autobooting (ABO, MAX8844Y)  
♦ Tiny 3mm x 3mm, 14-Pin TDFN Package, 0.8mm  
Height (max)  
The MAX8844Z/MAX8844Y automatically select between  
either the USB or IN source. If both sources are present  
at the same time, highest priority is given to the IN source.  
The IN source is selected to ensure the shortest charging  
time for the system since it is able to deliver the highest  
current.  
Ordering Information  
ABO  
PIN-  
PACKAGE  
PART  
TOP MARK  
ACTIVE  
STATE  
The MAX8844Z/MAX8844Y accept an input supply range  
from 4.25V to 28V (IN and USB), but disable charging if  
the input voltage exceeds +7.5V to protect against  
unqualified or faulty AC adapters. The ICs operate over  
the extended temperature range (-40°C to +85°C) and are  
available in a compact 14-pin, thermally enhanced, lead-  
free TDFN 3mm x 3mm package (0.8mm max height).  
MAX8844ZETD+ 14 TDFN-EP*  
MAX8844YETD+ 14 TDFN-EP*  
AEK  
AEN  
Active high  
Active low  
+Denotes a lead(Pb)-free/RoHS-compliant package.  
*EP = Exposed pad.  
Note: All devices are specified over the -40°C to +85°C oper-  
ating temperature range.  
Applications  
Cellular and Cordless  
Phones  
USB Appliances  
Charging Cradles and  
Docks  
Smart Phones and PDAs  
Digital Still Cameras  
MP3 Players  
Typical Operating Circuit and Pin Configuration appear at  
end of data sheet.  
Bluetooth® Equipment  
Bluetooth is a registered trademark of Bluetooth SIG.  
________________________________________________________________ Maxim Integrated Products  
1
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.  
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