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LM4125 Datasheet

  • LM4125

  • Precision Micropower Low Dropout Voltage Reference

  • 298.77KB

  • 12頁(yè)

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LM4125 Precision Micropower Low Dropout Voltage Reference
November 2003
LM4125
Precision Micropower Low Dropout Voltage Reference
General Description
The LM4125 is a precision low power low dropout bandgap
voltage reference with up to 5 mA output current source and
sink capability.
This series reference operates with input voltages as low as
2V and up to 6V consuming 160 碌A(chǔ) (Typ.) supply current. In
power down mode, device current drops to less than 2 碌A(chǔ).
The LM4125 comes in two grades (A and Standard) and
three voltage options for greater flexibility. The best grade
devices (A) have an initial accuracy of 0.2%, while the stan-
dard 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 dropout voltage, low supply current and power-
down capability of the LM4125 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 LM4125 is available in
a standard 5-pin SOT-23 package.
Features
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Small SOT23-5 package
Low dropout voltage:
120 mV Typ
@
1 mA
High output voltage accuracy:
0.2%
鹵
5 mA
Source and Sink current output:
Supply current:
160 碌A(chǔ) Typ.
Low Temperature Coefficient:
50 ppm/藲C
Fixed output voltages:
2.048, 2.5,and 4.096
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
Connection Diagram
20069802
Refer to the Ordering Information Table in this Data Sheet for Specific Part Number
SOT23-5 Surface Mount Package
漏 2003 National Semiconductor Corporation
DS200698
www.national.com

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