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LM185-2.5-N_13

更新时间： 2024-02-23 07:14:46
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德州仪器 - TI 二极管
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22页 1194K
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LM185-2.5-N/LM285-2.5-N/LM385-2.5-N Micropower Voltage Reference Diode

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LM185-2.5-N, LM285-2.5-N, LM385-2.5-N  
www.ti.com  
SNVS743D –DECEMBER 1999–REVISED MARCH 2013  
LM185-2.5-N/LM285-2.5-N/LM385-2.5-N Micropower Voltage Reference Diode  
Check for Samples: LM185-2.5-N, LM285-2.5-N, LM385-2.5-N  
Careful design of the LM185-2.5-N has made the  
1
FEATURES  
device exceptionally tolerant of capacitive loading,  
making it easy to use in almost any reference  
application. The wide dynamic operating range allows  
its use with widely varying supplies with excellent  
regulation.  
2
•
±20 mV (±0.8%) max. Initial Tolerance (A  
Grade)  
•
•
•
•
•
Operating Current of 20 μA to 20 mA  
0.6Ω Dynamic Impedance (A Grade)  
Low Temperature Coefficient  
The extremely low power drain of the LM185-2.5-N  
makes it useful for micropower circuitry. This voltage  
reference can be used to make portable meters,  
regulators or general purpose analog circuitry with  
battery life approaching shelf life. Further, the wide  
operating current allows it to replace older references  
with a tighter tolerance part. For applications requiring  
1.2V see LM185-1.2.  
Low Voltage Reference—2.5V  
1.2V Device and Adjustable Device Also  
Available—LM185-1.2 Series and LM185  
Series, respectively  
DESCRIPTION  
The LM185-2.5-N/LM285-2.5-N/LM385-2.5-N are  
micropower 2-terminal band-gap voltage regulator  
diodes. Operating over a 20 μA to 20 mA current  
range, they feature exceptionally low dynamic  
impedance and good temperature stability. On-chip  
trimming is used to provide tight voltage tolerance.  
Since the LM-185-2.5-N band-gap reference uses  
only transistors and resistors, low noise and good  
long term stability result.  
The LM185-2.5-N is rated for operation over a −55°C  
to 125°C temperature range while the LM285-2.5-N is  
rated −40°C to 85°C and the LM385-2.5-N 0°C to  
70°C. The LM185-2.5-N/LM285-2.5-N are available in  
a hermetic TO package and the LM285-2.5-N/LM385-  
2.5-N are also available in a low-cost TO-92 molded  
package, as well as SOIC and SOT-23. The LM185-  
2.5-N is also available in a hermetic leadless chip  
carrier package.  
Connection Diagram  
Figure 1. TO-92 Package  
(Bottom View)  
Figure 2. SOIC Package  
See Package Number D0008A  
See Package Number LP0003A  
* Pin 3 is attached to the Die Attach Pad (DAP) and should be connected to Pin 2 or left floating.  
Figure 3. SOT-23  
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of  
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
All trademarks are the property of their respective owners.  
2
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 1999–2013, Texas Instruments Incorporated  
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