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MAX8719 PDF预览

MAX8719

更新时间: 2024-11-05 22:12:27
品牌 Logo 应用领域
美信 - MAXIM 稳压器电脑
页数 文件大小 规格书
10页 185K
描述
High-Voltage, Low-Power Linear Regulators for Notebook Computers

MAX8719 数据手册

 浏览型号MAX8719的Datasheet PDF文件第2页浏览型号MAX8719的Datasheet PDF文件第3页浏览型号MAX8719的Datasheet PDF文件第4页浏览型号MAX8719的Datasheet PDF文件第5页浏览型号MAX8719的Datasheet PDF文件第6页浏览型号MAX8719的Datasheet PDF文件第7页 
19-3495; Rev 0; 11/04  
Hig h -Vo lt a g e , Lo w -P o w e r Lin e a r Re g u la t o rs fo r  
No t e b o o k Co m p u t e rs  
Ge n e ra l De s c rip t io n  
Fe a t u re s  
The MAX8718/MAX8719 are micropower, 8-pin TDFN  
line a r re g ula tors tha t s up p ly a lwa ys -on, ke e p -a live  
p owe r to CMOS RAM, re a l-time c loc ks (RTC), a nd  
microcontrollers in systems with high-voltage batteries.  
The circuits consist of a 100mA linear regulator and a  
power-good comparator (PGOOD) with fixed-output  
delay. Key features include wide input voltage range,  
low-dropout voltage, and low-quiescent supply current.  
4V to 28V Input Range  
18µA Quiescent Supply Current  
<3µA Shutdown Supply Current  
100mA Output Current  
3.3V or 5V, Pin-Selectable Output (MAX8718)  
Adjustable 1.24V to 28V Output (MAX8719)  
±2% Output Accuracy  
Despite a miserly 25µA (max) no-load quiescent cur-  
rent, the MAX8718/MAX8719 have good line- and load-  
tra ns ie nt re s p ons e a nd e xc e lle nt AC p owe r-s up p ly  
rejection. They provide a clean fixed 5V or 3.3V output  
(MAX8718), or a n a d jus ta b le 1.24V to 28V outp ut  
(MAX8719), even when subjected to fast supply-volt-  
age changes that occur during the switchover from bat-  
te ry to AC-a d a p te r inp ut p owe r. The s p a c e -s a ving  
TDFN package has excellent thermal characteristics  
a nd tole ra te s up to 1951mW of p owe r d is s ip a tion.  
Internal foldback current limiting and thermal shutdown  
protect the regulator from overload and thermal faults.  
Thermal-Overload Protection  
Delayed Power-Good Output  
Thermally Enhanced 8-Pin TDFN Package  
Ord e rin g In fo rm a t io n  
OUTPUT  
VOLTAGE  
In addition to the main notebook-computer application,  
these devices are useful in other low-power, high-volt-  
PART  
TEMP RANGE PIN-PACKAGE  
age applications (4V < V < 28V) such as smart batter-  
ies, current control loops, telecom emergency power,  
and housekeeping power for off-line supplies.  
IN  
8 TDFN 3mm x  
3mm  
MAX8718ETA -40°C to +85°C  
MAX8719ETA -40°C to +85°C  
3.3V/5V  
8 TDFN 3mm x  
3mm  
Adjustable  
The MAX8718/MAX8719 are available in a thermally  
enhanced 3mm x 3mm, 8-lead TDFN package.  
Ap p lic a t io n s  
P in Co n fig u ra t io n  
CMOS/RTC Backup Power  
Microcontroller Power  
Notebook Computers  
TOP VIEW  
Smart-Battery Packs  
1
2
3
4
8
7
6
5
OUT  
IN  
GND  
PDAs and Handy-Terminals  
Battery-Powered Systems  
I.C.  
MAX8718  
MAX8719  
5/3 (FB)  
SHDN  
PGOOD  
V
CC  
TDFN  
3mm × 3mm  
() ARE FOR THE MAX8719.  
________________________________________________________________ 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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