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MAX840ESA+T

更新时间： 2024-11-19 13:11:07
品牌 Logo 应用领域
美信 - MAXIM /
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10页 162K
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MAX840ESA+T 数据手册

 浏览型号MAX840ESA+T的Datasheet PDF文件第2页浏览型号MAX840ESA+T的Datasheet PDF文件第3页浏览型号MAX840ESA+T的Datasheet PDF文件第4页浏览型号MAX840ESA+T的Datasheet PDF文件第5页浏览型号MAX840ESA+T的Datasheet PDF文件第6页浏览型号MAX840ESA+T的Datasheet PDF文件第7页 
19-0388; Rev 1; 3/96  
Lo w -No is e , Re g u la t e d , -2 V Ga As FET Bia s  
03/MAX84  
_______________Ge n e ra l De s c rip t io n  
____________________________Fe a t u re s  
The MAX840/MAX843/MAX844 low-nois e , inve rting  
c ha rg e -p ump p owe r s up p lie s a re id e a l for b ia s ing  
GaAsFETs in cellular telephone transmitter amplifiers.  
They operate with inputs down to 2.5V.  
♦ Fixed -2V or Adjustable -0.5V to -9.4V Output  
at 4mA (MAX840)  
♦ 2.5V to 10V Input Voltage Range  
The MAX840 offers both a -2V preset output and a -0.5V  
to -9.4V adjustable output. The MAX843/MAX844 use  
an external positive control voltage to set the negative  
output voltage. Input voltage range for all the devices is  
♦ Operate with Small Capacitors (as low as 0.22µF)  
♦ 1mVp-p Output Voltage Ripple  
♦ Charge-Pump Switching Frequency:  
100kHz in Normal Operation  
2.5V to 10V, and output current is 4mA with V > 2.7V.  
IN  
These circuits can operate with small capacitors, as low  
as 0.22µF.  
20kHz in Shutdown Mode (MAX844)  
An internal linear regulator reduces the MAX840’s out-  
put voltage ripple to 1mVp-p. With a well-filtered control  
♦ 1µA Max Logic-Level Shutdown Over Temp.  
(MAX840/MAX843)  
voltage (V ), the MAX843/MAX844 also achieve less  
CTRL  
♦ Small 8-Pin SO Package  
than 1mVp-p typical output ripple. Supply current is  
750µA, a nd re d uc e s to le s s tha n 1µA in s hutd own  
(MAX840/MAX843). The MAX844’s unregulated output  
is active in shutdown, with the charge pump switching at  
20kHz. It provides a low-power LCD supply.  
______________Ord e rin g In fo rm a t io n  
PART  
TEMP. RANGE  
0°C to +70°C  
PIN-PACKAGE  
Dice*  
8 SO  
________________________Ap p lic a t io n s  
Cellular Phones  
MAX840C/D  
MAX840ISA  
MAX840ESA  
MAX843C/D  
MAX843ISA  
MAX843ESA  
MAX844C/D  
MAX844ISA  
MAX844ESA  
-25°C to +85°C  
-40°C to +85°C  
0°C to +70°C  
GaAsFET Power Amplifier Modules  
Personal Communicators, PDAs  
Wireless Data Loggers  
Continuously Adjustable GaAsFET Bias  
LCD-Bias Contrast Control  
8 SO  
Dice*  
8 SO  
-25°C to +85°C  
-40°C to +85°C  
0°C to +70°C  
8 SO  
Dice*  
8 SO  
Regulated Negative Power Supplies  
-25°C to +85°C  
-40°C to +85°C  
8 SO  
__________Typ ic a l Op e ra t in g Circ u it  
* Dice are specified at T = +25°C only.  
A
V
IN  
= 2.5V to 10.0V  
(3 CELLS)  
__________________P in Co n fig u ra t io n  
0.22µF  
IN  
C1+  
C1-  
TOP VIEW  
V
= -2.0V  
OUT  
0.22µF  
(V of GaAsFET)  
GG  
MAX840  
OUT  
FB  
1
2
3
4
8
7
6
5
C1+  
C1-  
IN  
4.7µF  
NEGOUT  
GND  
OUT  
MAX840  
MAX843  
MAX844  
0.22µF  
NEGOUT  
SHDN  
FB (CONT)  
ON/OFF  
SHDN  
SO  
GND  
( ) ARE FOR MAX843/MAX844  
________________________________________________________________ Maxim Integrated Products  
1
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800  
1234567...10

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MAX840ESA+T 替代型号

型号 品牌 替代类型 描述 数据表
MAX840ISA+ MAXIM

类似代替

 Switched Capacitor Regulator, 100kHz Switching Freq-Max, CMOS, PDSO8, SOP-8
MAX840ESA+ MAXIM

类似代替

 暂无描述
MAX840ISA+T MAXIM

类似代替

 暂无描述

与MAX840ESA+T相关器件

型号 品牌 获取价格 描述 数据表
MAX840ESA-T MAXIM

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 		暂无描述
MAX840ISA MAXIM

获取价格

 		Low-Noise, Regulated, -2V GaAsFET Bias
MAX840ISA+ MAXIM

获取价格

 		Switched Capacitor Regulator, 100kHz Switching Freq-Max, CMOS, PDSO8, SOP-8
MAX840ISA+T MAXIM

获取价格

 		暂无描述
MAX843 MAXIM

获取价格

 		8-Channel.CMOS RF Video Multiplexer[MAX310/MAX311/MAX310/MAX311/MAX310/MAX311/MAX310C/D/MA
MAX843 ADI

获取价格

 		低噪声、稳压型、-2V GaAsFET偏置电源
MAX843C/D MAXIM

获取价格

 		Low-Noise, Regulated, -2V GaAsFET Bias
MAX843ESA MAXIM

获取价格

 		Low-Noise, Regulated, -2V GaAsFET Bias
MAX843ESA-T MAXIM

获取价格

 		Switched Capacitor Regulator, 100kHz Switching Freq-Max, CMOS, PDSO8, SOP-8
MAX843ISA MAXIM

获取价格

 		Low-Noise, Regulated, -2V GaAsFET Bias

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