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LM4121

Texas Instruments
Part Number LM4121
Manufacturer Texas Instruments
Description Precision Micropower Low Dropout Voltage Reference
Published Sep 14, 2020
Detailed Description LM4121 www.ti.com SNVS073C – APRIL 2000 – REVISED APRIL 2013 LM4121 Precision Micropower Low Dropout Voltage Referenc...
Datasheet PDF File LM4121 PDF File

LM4121
LM4121

Overview
LM4121 www.
ti.
com SNVS073C – APRIL 2000 – REVISED APRIL 2013 LM4121 Precision Micropower Low Dropout Voltage Reference Check for Samples: LM4121 FEATURES (LM4121-1.
2) 1 •2 Small SOT23-5 Package • Low Voltage Operation • High Output Voltage Accuracy: 0.
2% • Source and Sink Current Output: ±5 mA • Supply current: 160 μA Typ.
• Low Temperature Coefficient: 50 ppm/°C • Enable Pin • Output Voltages: 1.
25V and Adjustable • Industrial Temperature Range: −40°C to +85°C • (For Extended Temperature Range, −40°C to 125°C, Contact Texas Instruments) APPLICATIONS • Portable, Battery Powered Equipment • Instrumentation and Process Control • Automotive & Industrial • Test Equipment • Data Acquisition Systems • Precision Regulators • Battery Chargers • Base Stations • Communications • Medical Equipment DESCRIPTION The LM4121 is a precision bandgap voltage reference available in a fixed 1.
25V and adjustable version with up to 5 mA current source and sink capability.
This series reference operates with input voltages as low as 1.
8V and up to 12V consuming 160 µA (Typ.
) supply current.
In power down mode, device current drops to less than 2 μA.
The LM4121 comes in two grades A and Standard.
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 tempco of 50ppm/°C ensured from −40°C to +125°C.
The very low operating voltage, low supply current and power-down capability of the LM4121 makes 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 specs are ensured over the extended temperature range (−40°C to +125°C).
Please contact Texas Instruments for full specifications over the extended temperature range.
The LM4121 is available in a standard 5-pin SOT-23 package.
Block Diagram * Resistors are removed on the LM4121-ADJ †LM4121-ADJ only Figure 1.
LM4121-1.
2 Block Diagram 1 Please be aw...


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