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National Semiconductor Electronic Components Datasheet

LM4128 Datasheet

SOT-23 Precision Micropower Series Voltage Reference

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November 2006
LM4128
SOT-23 Precision Micropower Series Voltage Reference
General Description
Ideal for space critical applications, the LM4128 precision
voltage reference is available in the SOT-23 surface-mount
package. The LM4128’s advanced design eliminates the
need for an external stabilizing capacitor while ensuring sta-
bility with capacitive loads up to 10 µF, thus making the
LM4128 easy to use.
Series references provide lower power consumption than
shunt references, since they do not have to idle the maximum
possible load current under no load conditions. This advan-
tage, the low quiescent current (60 µA), and the low dropout
voltage (400 mV) make the LM4128 ideal for battery-powered
solutions.
The LM4128 is available in four grades (A, B, C, and D) for
greater flexibility. The best grade devices (A) have an initial
accuracy of 0.1% with guaranteed temperature coefficient of
75 ppm/°C or less, while the lowest grade parts (D) have an
initial accuracy of 1.0% and a tempco of 100 ppm/°C.
Features
Output voltage initial accuracy 0.1%
Low temperature coefficient 75 ppm/°C
Low Supply Current, 60 µA
Enable pin allowing a 3 µA shutdown mode
Up to 20 mA output current
Voltage options 1.8V, 2.048V, 2.5V, 3.0V, 3.3V, 4.096V
Custom voltage options available (1.8V to 4.096V)
VIN range of VREF + 400 mV to 5.5V @10 mA
Stable with low ESR ceramic capacitors
SOT23-5 Package
−40°C to 125°C junction temperature range
Applications
Instrumentation & Process Control
Test Equipment
Data Acquisition Systems
Base Stations
Servo Systems
Portable, Battery Powered Equipment
Automotive & Industrial
Precision Regulators
Battery Chargers
Communications
Medical Equipment
Typical Application Circuit
*Note: The capacitor CIN is required and the capacitor COUT is optional.
© 2006 National Semiconductor Corporation 202110
20211001
www.national.com


National Semiconductor Electronic Components Datasheet

LM4128 Datasheet

SOT-23 Precision Micropower Series Voltage Reference

No Preview Available !

Connection Diagram
Top View
20211002
SOT23-5 Package
NS Package Number MF05A
Ordering Information
Input Output Voltage Accuracy at LM4128 Supplied as 1000 units, LM4128 Supplied as 3000 units,
25°C And Temperature Coefficient
Tape and Reel
Tape and Reel
0.1%, 75 ppm/°C (A grade)
LM4128AMF-1.8
LM4128AMFX-1.8
LM4128AMF-2.0
LM4128AMFX-2.0
LM4128AMF-2.5
LM4128AMFX-2.5
LM4128AMF-3.0
LM4128AMFX-3.0
LM4128AMF-3.3
LM4128AMFX-3.3
LM4128AMF-4.1
LM4128AMFX-4.1
0.2%, 75 ppm/°C (B grade)
LM4128BMF-1.8
LM4128BMFX-1.8
LM4128BMF-2.0
LM4128BMFX-2.0
LM4128BMF-2.5
LM4128BMFX-2.5
LM4128BMF-3.0
LM4128BMFX-3.0
LM4128BMF-3.3
LM4128BMFX-3.3
LM4128BMF-4.1
LM4128BMFX-4.1
0.5%, 100 ppm/°C (C grade)
LM4128CMF-1.8
LM4128CMFX-1.8
LM4128CMF-2.0
LM4128CMFX-2.0
LM4128CMF-2.5
LM4128CMFX-2.5
LM4128CMF-3.0
LM4128CMFX-3.0
LM4128CMF-3.3
LM4128CMFX-3.3
LM4128CMF-4.1
LM4128CMFX-4.1
1.0%, 100 ppm/°C max (D grade)
LM4128DMF-1.8
LM4128DMFX-1.8
LM4128DMF-2.0
LM4128DMFX-2.0
LM4128DMF-2.5
LM4128DMFX-2.5
LM4128DMF-3.0
LM4128DMFX-3.0
LM4128DMF-3.3
LM4128DMFX-3.3
LM4128DMF-4.1
LM4128DMFX-4.1
Part Marking
R5AA
R5BA
R5CA
R5DA
R5EA
R5FA
R5AB
R5BB
R5CB
R5DB
R5EB
R5FB
R5AC
R5BC
R5CC
R5DC
R5EC
R5FC
R5AD
R5BD
R5CD
R5DD
R5ED
R5FD
Pin Descriptions
Pin #
1
2
3
4
5
Name
N/C
GND
EN
VIN
VREF
Function
No connect pin, leave floating
Ground
Enable pin
Input supply
Reference output
www.national.com
2


Part Number LM4128
Description SOT-23 Precision Micropower Series Voltage Reference
Maker National Semiconductor
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LM4128 Datasheet PDF





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