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MAX870 PDF预览

MAX870

更新时间: 2024-10-30 22:12:27
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8页 100K
描述
Switched-Capacitor Voltage Inverters

MAX870 数据手册

 浏览型号MAX870的Datasheet PDF文件第2页浏览型号MAX870的Datasheet PDF文件第3页浏览型号MAX870的Datasheet PDF文件第4页浏览型号MAX870的Datasheet PDF文件第5页浏览型号MAX870的Datasheet PDF文件第6页浏览型号MAX870的Datasheet PDF文件第7页 
19-1240; Rev 0; 6/97  
S w it c h e d -Ca p a c it o r Vo lt a g e In ve rt e rs  
0/MAX871  
_______________Ge n e ra l De s c rip t io n  
____________________________Fe a t u re s  
5-Pin SOT23-5 Package  
The ultra-small MAX870/MAX871 monolithic, CMOS  
charge-pump inverters accept input voltages ranging  
from +1.4V to +5.5V. The MAX870 operates at 125kHz,  
and the MAX871 operates at 500kHz. Their high efficien-  
c y (90%) a nd low op e ra ting c urre nt (0.7mA for the  
MAX870) make these devices ideal for both battery-pow-  
ered and board-level voltage-conversion applications.  
99% Voltage Conversion Efficiency  
Invert Input Supply Voltage  
0.7mA Quiescent Current (MAX870)  
+1.4V to +5.5V Input Voltage Range  
Require Only Two Capacitors  
25mA Output Current  
Oscillator control circuitry and four power MOSFET  
s witc he s a re inc lud e d on-c hip . A typ ic a l MAX870/  
MAX871 application is generating a -5V supply from a  
+5V logic supply to power analog circuitry. Both parts  
come in a 5-pin SOT23-5 package and can deliver 25mA  
with a voltage drop of 500mV.  
Shutdown Control  
For applications requiring more power, the MAX860  
delivers up to 50mA with a voltage drop of 600mV, in a  
space-saving µMAX package.  
______________Ord e rin g In fo rm a t io n  
PIN-  
SOT  
PART  
TEMP. RANGE  
PACKAGE TOP MARK  
________________________Ap p lic a t io n s  
Local -5V Supply from 5V Logic Supply  
Small LCD Panels  
MAX870C/D  
0°C to +70°C  
Dice*  
MAX870EUK -40°C to +85°C  
MAX871C/D 0°C to +70°C  
MAX871EUK -40°C to +85°C  
* Dice are tested at T = +25°C.  
5 SOT23-5  
Dice*  
ABZN  
5 SOT23-5  
ABZO  
Cell Phones  
A
Medical Instruments  
Handy-Terminals, PDAs  
Battery-Operated Equipment  
__________________P in Co n fig u ra t io n  
__________Typ ic a l Op e ra t in g Circ u it  
TOP VIEW  
INPUT  
SUPPLY  
VOLTAGE  
5
2
IN  
C1+  
MAX870  
MAX871  
OUT  
IN  
1
2
3
C1+  
5
4
MAX870  
MAX871  
3
4
C1-  
NEGATIVE  
OUTPUT  
VOLTAGE  
1
OUT  
C1-  
GND  
GND  
SOT23-5  
NEGATIVE VOLTAGE CONVERTER  
________________________________________________________________ Maxim Integrated Products  
1
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800  

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