Voltage Reference. LM4120 Datasheet

LM4120 Reference. Datasheet pdf. Equivalent

Part LM4120
Description Precision Micropower Low Dropout Voltage Reference
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LM4120
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LM4120
SNVS049F – FEBRUARY 2000 – REVISED MARCH 2016
LM4120 Precision Micropower Low Dropout Voltage Reference
1 Features
1 Small SOT23-5 Package
• Low Dropout Voltage: 120 mV Typical at 1 mA
• High Output Voltage Accuracy: 0.2%
• Source and Sink Current Output: ±5 mA
• Supply Current: 160 μA Typical
• Low Temperature Coefficient: 50 ppm/°C
• Enable Pin
• Fixed Output Voltages: 1.8, 2.048, 2.5, 3, 3.3,
4.096, and 5 V
• Industrial Temperature Range: 40°C to 85°C
• (For Extended Temperature Range, 40°C to
125°C, Contact TI)
2 Applications
• Portable, Battery-Powered Equipment
• Instrumentation and Process Control
• Automotive and Industrial
• Test Equipment
• Data Acquisition Systems
• Precision Regulators
• Battery Chargers
• Base Stations
• Communications
• Medical Equipment
3 Description
The LM4120 device 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 2 V and up to 12 V, consuming 160-µA
(typical) supply current. In power-down mode, device
current drops to less than 2 μA.
The LM4120 comes in two grades (A and Standard)
and seven voltage options for greater flexibility. 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 temperature coefficient of
50 ppm/°C ensured from 40°C to 125°C.
The very low dropout voltage, low supply current, and
power-down capability of the LM4120 make this
product an ideal choice for battery-powered and
portable applications.
The device performance is ensured over the industrial
temperature range (40°C to 85°C), while certain
specifications are ensured over the extended
temperature range (40°C to 125°C). Contact TI for
full specifications over the extended temperature
range. The LM4120 is available in a standard 5-pin
SOT-23 package.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
LM4120
SOT-23 (5)
1.60 mm × 2.90 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Functional Block Diagram
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.



LM4120
LM4120
SNVS049F – FEBRUARY 2000 – REVISED MARCH 2016
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Pin Configuration and Functions ......................... 3
6 Specifications......................................................... 3
6.1 Absolute Maximum Ratings ...................................... 3
6.2 ESD Ratings.............................................................. 3
6.3 Recommended Operating Conditions ...................... 4
6.4 Thermal Information .................................................. 4
6.5 Electrical Characteristics........................................... 4
6.6 Typical Characteristics .............................................. 7
7 Detailed Description ............................................ 10
7.1 Overview ................................................................. 10
7.2 Functional Block Diagram ....................................... 10
7.3 Feature Description................................................. 10
7.4 Device Functional Modes........................................ 10
8 Application and Implementation ........................ 11
8.1 Application Information............................................ 11
8.2 Typical Application .................................................. 14
9 Power Supply Recommendations...................... 15
10 Layout................................................................... 16
10.1 Layout Guidelines ................................................. 16
10.2 Layout Example ................................................... 16
11 Device and Documentation Support ................. 17
11.1 Community Resources.......................................... 17
11.2 Trademarks ........................................................... 17
11.3 Electrostatic Discharge Caution ............................ 17
11.4 Glossary ................................................................ 17
12 Mechanical, Packaging, and Orderable
Information ........................................................... 17
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision E (February 2016) to Revision F
Page
• Added updated Layout Example ......................................................................................................................................... 16
Changes from Revision D (July 2015) to Revision E
Page
• Added updated Layout Example .......................................................................................................................................... 16
Changes from Revision C (April 2013) to Revision D
Page
• Added ESD Ratings table, Feature Description section, Device Functional Modes, Application and Implementation
section, Power Supply Recommendations section, Layout section, Device and Documentation Support section, and
Mechanical, Packaging, and Orderable Information section. ................................................................................................ 1
Changes from Revision B (April 2013) to Revision C
Page
• Changed layout of National Data Sheet to TI format ........................................................................................................... 14
2
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