Datasheet > LM4121

LM4121

更新时间： 2024-09-17 02:58:27

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LM4121 Precision Micropower Low Dropout Voltage Reference

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LM4121 数据手册

LM4121

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SNVS073C –APRIL 2000–REVISED APRIL 2013

LM4121 Precision Micropower Low Dropout Voltage Reference

Check for Samples: LM4121

FEATURES (LM4121-1.2)

DESCRIPTION

The LM4121 is

reference available in a fixed 1.25V and adjustable

version with up to 5 mA current source and sink

capability.

•

Small SOT23-5 Package

precision bandgap voltage

Low Voltage Operation

High Output Voltage Accuracy: 0.2%

Source and Sink Current Output: ±5 mA

Supply current: 160 μA Typ.

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.

Low Temperature Coefficient: 50 ppm/°C

Enable Pin

Output Voltages: 1.25V and Adjustable

Industrial Temperature Range: −40°C to +85°C

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.

(For Extended Temperature Range, −40°C to

125°C, Contact Texas Instruments)

APPLICATIONS

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.

•

Portable, Battery Powered Equipment

Instrumentation and Process Control

Automotive & Industrial

Test Equipment

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.

Data Acquisition Systems

Precision Regulators

Battery Chargers

Base Stations

Communications

Medical Equipment

Block Diagram

* Resistors are removed on the LM4121-ADJ

†LM4121-ADJ only

Figure 1. LM4121-1.2 Block Diagram

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

All trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

12 3 4 5 6 7...22

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