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LM4121AIM5-1.2 Datasheet

  • LM4121AIM5-1.2

  • National Semiconductor [Precision Micropower Low Dropout Vo...

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  • NSC

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LM4121 Precision Micropower Low Dropout Voltage Reference
April 2000
LM4121
Precision Micropower Low Dropout Voltage Reference
General Description
The LM4121 is a precision bandgap voltage reference avail-
able in a fixed 1.25V and adjustable version with up to 5 mA
current source and sink capability.
This series reference operates with input voltages as low as
1.8V and up to 12V consuming 160 碌A (Typ.) supply current.
In power down mode, device current drops to less than 2 碌A.
The LM4121 comes in two grades A and Standard. The best
grade devices (A) have an initial accuracy of 0.2%, while the
standard have an initial accuracy of 0.5%, both with a
tempco of 50ppm/藲C guaranteed from 鈭?0藲C to +125藲C.
The very low operating voltage, low supply current and
power-down capability of the LM4121 makes this product an
ideal choice for battery powered and portable applications.
The device performance is guaranteed over the industrial
temperature range (鈭?0藲C to +85藲C), while certain specs are
guaranteed over the extended temperature range (鈭?0藲C to
+125藲C). Please contact National for full specifications over
the extended temperature range. The LM4121 is available in
a standard 5-pin SOT-23 package.
Features (LM4121-1.2)
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Small SOT23-5 package
Low voltage operation
High output voltage accuracy:
0.2%
卤
5 mA
Source and Sink current output:
Supply current:
160 碌A Typ.
Low Temperature Coefficient:
50 ppm/藲C
Enable pin
Output voltages:
1.25V and Adjustable
Industrial temperature Range:
鈭?0藲C to +85藲C
(For extended temperature range, 鈭?0藲C to 125藲C,
contact National Semiconductor)
Applications
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Portable, battery powered equipment
Instrumentation and process control
Automotive & Industrial
Test equipment
Data acquisition systems
Precision regulators
Battery chargers
Base stations
Communications
Medical equipment
LM4121-1.2 Block Diagram
Connection Diagram
DS101291-2
Refer to the Ordering Information Table in this Data Sheet for Specific
Part Number
SOT23-5 Surface Mount Package
DS101291-1
*
Resistors are removed on the LM4121-ADJ
鈥?/div>
LM4121-ADJ only
DS101291-35
漏 2000 National Semiconductor Corporation
DS101291
www.national.com

LM4121AIM5-1.2 产品属性

  • National Semiconductor (TI)

  • Voltage References

  • Series References

  • Precision

  • 1.25 V

  • 0.2 %

  • 50 PPM/C

  • 14 V

  • 5 mA

  • + 85 C

  • SOT-23

  • Reel

  • - 40 C

  • SMD/SMT

  • 1000

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