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MAX1878EGC PDF预览

MAX1878EGC

更新时间: 2024-01-07 08:44:50
品牌 Logo 应用领域
美信 - MAXIM 模拟IC
页数 文件大小 规格书
12页 580K
描述
Analog IC

MAX1878EGC 技术参数

是否Rohs认证: 不符合生命周期:Obsolete
零件包装代码:QFN包装说明:4 X 4 MM, 0.90 MM HEIGHT, QFN-12
针数:12Reach Compliance Code:not_compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.8模拟集成电路 - 其他类型:SWITCHING REGULATOR
控制模式:VOLTAGE-MODE最大输入电压:5.5 V
最小输入电压:2 V标称输入电压:2.5 V
JESD-30 代码:S-CQCC-N12JESD-609代码:e0
长度:4 mm湿度敏感等级:1
功能数量:2端子数量:12
最高工作温度:85 °C最低工作温度:-40 °C
最大输出电流:0.8 A封装主体材料:CERAMIC, METAL-SEALED COFIRED
封装代码:HVQCCN封装等效代码:LCC12,.16SQ,32
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):240电源:2.5 V
认证状态:Not Qualified座面最大高度:1 mm
子类别:Power Management Circuits标称供电电压 (Vsup):2.5 V
表面贴装:YES切换器配置:BUCK
最大切换频率:500 kHz技术:BICMOS
温度等级:INDUSTRIAL端子面层:Tin/Lead (Sn85Pb15)
端子形式:NO LEAD端子节距:0.8 mm
端子位置:QUAD处于峰值回流温度下的最长时间:20
宽度:4 mmBase Number Matches:1

MAX1878EGC 数据手册

 浏览型号MAX1878EGC的Datasheet PDF文件第2页浏览型号MAX1878EGC的Datasheet PDF文件第3页浏览型号MAX1878EGC的Datasheet PDF文件第4页浏览型号MAX1878EGC的Datasheet PDF文件第5页浏览型号MAX1878EGC的Datasheet PDF文件第6页浏览型号MAX1878EGC的Datasheet PDF文件第7页 
19-2248; Rev 0; 10/01  
Dual-Output Step-Down and LCD Step-Up  
Power Supply for PDAs  
General Description  
Features  
The MAX1878 dual power supply contains a step-down  
and step-up DC-DC converter in a small 12-pin QFN  
package for use in PDAs. The step-down DC-DC convert-  
er delivers over 500mA to an output as low as 1.25V for  
logic power. The step-up DC-DC converter delivers over  
15mA and an output as high as 28V for a liquid crystal dis-  
play (LCD). With an input voltage from 2.0V to 5.5V the  
MAX1878 is intended for use in systems powered by a  
2-cell alkaline or 1-cell lithium-ion (Li+) battery.  
Evaluation Kit Available to Speed Designs  
Two Output Voltages  
Main Output: 1.25V to V  
LCD Output: Up to 28V  
IN  
2.0V to 5.5V Input Range  
Low 19µA Quiescent Supply Current  
1µA Shutdown Supply Current  
High Switching Frequency for Small External  
Fast switching frequency allows the use of small inductors  
and capacitors, and the low 19µA typical quiescent cur-  
rent allows high efficiency when the system is in standby  
mode. Each output can be independently enabled.  
Components  
Small 1mm High 4mm x 4mm 12-Pin QFN Package  
The MAX1878 is available in a small 1mm high 4mm x  
4mm 12-pin QFN package and requires no external FETs.  
The MAX1878 evaluation kit is available to speed designs.  
Ordering Information  
________________________Applications  
Personal Digital Assistants (PDA)  
Organizers/Translators  
MP3 Players  
PIN-  
PACKAGE  
TOP  
MARK  
PART  
TEMP. RANGE  
MAX1878EGC  
-40°C to +85°C  
12-QFN  
AAAO  
GPS Receivers  
Pin Configuration  
__________Typical Operating Circuit  
10µH  
INPUT  
2.0V TO 5.5V  
TOP VIEW  
LCD OUTPUT  
UP TO 28V  
IN  
LXLCD  
FBLCD  
12  
11  
10  
0.1µF  
AIN1  
AIN2  
IN  
1
9
LXLCD  
10µH  
MAIN OUTPUT  
1.25V TO V  
LX  
FB  
LX  
2
3
MAX1878  
8
7
AGND  
ON  
IN  
MAX1878EGC  
ON  
ON  
AIN1  
OFF  
OFF  
ON  
MAIN  
LCD  
ONLCD  
4
5
6
PGND AGND PGNDLCD  
4mm x 4mm QFN  
________________________________________________________________ Maxim Integrated Products  
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at  
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.  

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