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MAX1982

更新时间： 2024-09-26 14:57:51
品牌 Logo 应用领域
亚德诺 - ADI 稳压器
页数 文件大小 规格书
13页 230K
描述
低电压、低压差线性稳压器，外部偏置电源

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MAX1982 数据手册

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19-256ꢁ; Rev 1; 1ꢁ/ꢁ8  
Low-Voltage, Low-Dropout Linear Regulators  
with External Bias Supply  
2/MAX1983  
General Description  
Features  
The MAX1982/MAX1983 are low-voltage, low-dropout  
linear regulators with an external bias supply input. The  
5V bias supply drives the gate of the internal N-channel  
pass transistor, making these devices ideal for applica-  
tions that require low-voltage outputs from low-voltage  
inputs. The MAX1982 delivers 1.2V ( 3ꢀ% at 3ꢁꢁmA  
from an input voltage of 1.25V to 5.5V. The MAX1983  
delivers an adjustable output voltage from ꢁ.8V to 2V.  
o Low-Cost 1.2V, 300mA VID Supply  
3ꢀ ꢁutput Voltꢂag Aꢃꢃuꢄꢂꢃy  
o
o No Minimum Loꢂd Cuꢄꢄgnt Rgquiꢄgd  
o 1.25V to 5.5V Input Supply Voltꢂag  
o 5V Input Biꢂs Supply Voltꢂag  
o Powgꢄ-Good (PGꢁꢁD) ꢁpgn-Dꢄꢂin ꢁutput with  
1ms Risina Edag Pꢄopꢂaꢂtion Dglꢂy (MAX1982)  
The MAX1982/MAX1983 include a current-limit and  
thermal shutdown that protects the regulator in the  
event of a fault condition. Both devices are offered in a  
6-pin SOT23 package and are specified over the  
extended (-4ꢁ°C to +85°C% temperature range.  
o Adjustꢂblg ꢁutput Voltꢂag (MAX1983)  
o Low Supply Cuꢄꢄgnt (I  
+ I = 165µA typ)  
IN  
BIAS  
o 5µA (mꢂx) Shutdown Supply Cuꢄꢄgnt  
o Tiny 6-Pin SꢁT23 Pꢂꢃkꢂag  
Applications  
Ordering Information  
Notebook Computers  
VID Power Supplies  
PDAs  
PIN-  
PACKAGE  
TOP  
MARK  
PART  
TEMP RANGE  
MAX1982EUT-T -40°C to +85°C  
MAX1983EUT-T -40°C to +85°C  
MAX1982EUT+T -40°C to +85°C  
MAX1983EUT+T -40°C to +85°C  
6 SOT23-6  
6 SOT23-6  
6 SOT23-6  
6 SOT23-6  
ABEA  
ABEB  
Cell Phones  
Low-Dropout Regulators with External Bias  
Supply  
ABEA+  
ABEB+  
+Denotes lead(Pb%-free package/RoHS-compliant package.  
Pin Configurations  
TOP VIEW  
Typical Operating Circuit  
4.5V TO 5.5V  
1.25V TO 5.5V  
BIAS  
IN  
BIAS  
GND  
1
2
3
6
5
4
IN  
MAX1982  
10μF  
0.1μF  
MAX1982  
OUT  
PGOOD  
1.2V  
GND  
OUT  
SHDN  
10μF  
ON  
PGOOD  
SꢁT23  
Fixgd ꢁutput Voltꢂag  
SHDN  
PGOOD  
OFF  
100kΩ  
BIAS  
GND  
1
2
3
6
5
4
IN  
MAX1983  
OUT  
ADJ  
SHDN  
SꢁT23  
Adjustꢂblg ꢁutput  
________________________________________________________________ Mꢂxim Intgaꢄꢂtgd Pꢄoduꢃts  
1
Foꢄ pꢄiꢃina, dglivgꢄy, ꢂnd oꢄdgꢄina infoꢄmꢂtion, plgꢂsg ꢃontꢂꢃt Mꢂxim Diꢄgꢃt ꢂt 1-888-629-4642,  
oꢄ visit Mꢂxim’s wgbsitg ꢂt www.mꢂxim-iꢃ.ꢃom.  
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