Home Power management Voltage references Series voltage references

LM4125

LAST TIME BUY

0.2% 50-ppm/°C precision micropower low-dropout series voltage reference

LM4125 is in the process of being discontinued
Consider one of these alternates:
open-in-new Compare alternates
Pin-for-pin with same functionality to the compared device
REF4132 ACTIVE 12-ppm/°C low-noise low-power precision voltage reference Enhanced initial accuracy (0.05%) and lower quiescent current (100 µA) with enable pin

Product details

VO (V) 2.048, 2.5 Initial accuracy (max) (%) 0.2, 0.5 Temp coeff (max) (ppm/°C) 50 Vin (min) (V) 2 Vin (max) (V) 6 Iq (typ) (mA) 0.16 Rating Catalog Features Enable pin LFN 0.1 to 10 Hz (typ) (µVPP) 20 Iout/Iz (max) (mA) 5 Operating temperature range (°C) -40 to 125
VO (V) 2.048, 2.5 Initial accuracy (max) (%) 0.2, 0.5 Temp coeff (max) (ppm/°C) 50 Vin (min) (V) 2 Vin (max) (V) 6 Iq (typ) (mA) 0.16 Rating Catalog Features Enable pin LFN 0.1 to 10 Hz (typ) (µVPP) 20 Iout/Iz (max) (mA) 5 Operating temperature range (°C) -40 to 125
SOT-23 (DBV) 5 8.12 mm² 2.9 x 2.8
  • Small SOT23-5 Package
  • Low Dropout Voltage: 120 mV Typ @ 1 mA
  • High Output Voltage Accuracy: 0.2%
  • Source and Sink Current Output: ±5 mA
  • Supply Current: 160 μA Typ.
  • Low Temperature Coefficient: 50 ppm/°C
  • Fixed Output Voltages: 2.048, 2.5,and 4.096
  • Industrial Temperature Range: −40°C to +85°C
  • (For Extended Temperature Range, −40°C to 125°C, Contact TI)

All trademarks are the property of their respective owners.

  • Small SOT23-5 Package
  • Low Dropout Voltage: 120 mV Typ @ 1 mA
  • High Output Voltage Accuracy: 0.2%
  • Source and Sink Current Output: ±5 mA
  • Supply Current: 160 μA Typ.
  • Low Temperature Coefficient: 50 ppm/°C
  • Fixed Output Voltages: 2.048, 2.5,and 4.096
  • Industrial Temperature Range: −40°C to +85°C
  • (For Extended Temperature Range, −40°C to 125°C, Contact TI)

All trademarks are the property of their respective owners.

The LM4125 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 2V and up to 6V consuming 160 µA (Typ.) supply current. In power down mode, device current drops to less than 2 μA.

The LM4125 comes in two grades (A and Standard) and three 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 tempco of 50ppm/°C ensured from −40°C to +125°C.

The very low dropout voltage, low supply current and power-down capability of the LM4125 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 TI for full specifications over the extended temperature range. The LM4125 is available in a standard 5-pin SOT-23 package.

The LM4125 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 2V and up to 6V consuming 160 µA (Typ.) supply current. In power down mode, device current drops to less than 2 μA.

The LM4125 comes in two grades (A and Standard) and three 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 tempco of 50ppm/°C ensured from −40°C to +125°C.

The very low dropout voltage, low supply current and power-down capability of the LM4125 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 TI for full specifications over the extended temperature range. The LM4125 is available in a standard 5-pin SOT-23 package.

Download View video with transcript Video

Technical documentation

star =Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 3
Type Title Date
* Data sheet LM4125 Precision Micropower Low Dropout Voltage Reference datasheet (Rev. A) 29 Mar 2013
E-book Voltage Supervisor and Reset ICs: Tips, Tricks and Basics 28 Jun 2019
White paper Voltage reference selection basics white paper (Rev. A) 23 Oct 2018

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Package Pins Download
SOT-23 (DBV) 5 View options

Ordering & quality

Information included:
  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring
Information included:
  • Fab location
  • Assembly location

Support & training

TI E2E™ forums with technical support from TI engineers

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​

Videos