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LM4130 Datasheet

  • LM4130

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

  • NSC

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LM4130 Precision Micropower Low Dropout Voltage Reference
November 1999
LM4130
Precision Micropower Low Dropout Voltage Reference
General Description
The LM4130 family of precision voltage references performs
comparable to the best laser-trimmed bipolar references, but
in cost effective CMOS technology. Key to this break through
is the use of EEPROM registers for correction of curvature,
tempco, and accuracy on a CMOS bandgap architecture that
allows package level programming to overcome assembly
shift. The shifts in voltage accuracy and tempco during as-
sembly of die into plastic packages limit the accuracy of ref-
erences trimmed with laser techniques.
Unlike other LDO references, the LM4130 requires no output
capacitor. Neither is a buffer amplifier required, even with
loads up to 20mA. These advantages and the SOT23 pack-
aging are important for cost-critical and space-critical appli-
cations.
Series references provide lower power consumption than
shunt references, since they don鈥檛 have to idle the maximum
possible load current under no load conditions. This advan-
tage, the low quiescent current (75碌A(chǔ)), and the low dropout
voltage(275mV) make the LM4130 ideal for battery-powered
solutions.
The LM4130 is available in five grades (A, B, C, D and E) for
greater flexibility. The best grade devices (A) have an initial
accuracy of 0.05% with guaranteed temperature coefficient
of 10ppm/藲C or less, while the lowest grade parts (E) have
an initial accuracy of 0.5% and a tempco of 30ppm/藲C.
Features
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Small SOT23-5 package
High output voltage accuracy
0.05%
Low Temperature Coefficient
10 ppm/藲C
Stable with capacitive loads to 100碌F
Low dropout voltage
鈮?75
mV
@
10 mA
Supply Current
鈮?5
碌A(chǔ)
Full accuracy
鈭?0藲C to 85藲C
Extended operation to 125藲C
Excellent load and line regulation
Output current
20 mA
<
1鈩?/div>
Output impedance
Voltage options:
2.048V, 2.500V, and 4.096V
Applications Summary
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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
Servo systems
Connection Diagram and Pin Configuration
DS101046-2
DS101046-1
*
Optional, Recommended for improved transient response and
input noise reduction.
(See Application Information)
Refer to the Ordering Information Table in this Data Sheet for Specific Part
Number
SOT23-5 Surface Mount Package
漏 1999 National Semiconductor Corporation
DS101046
www.national.com

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