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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
SNVS049F –FEBRUARY 2000–REVISED MARCH 2016
LM4120 Precision Micropower Low Dropout Voltage Reference
1
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
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