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LM4040

PRECISION MICROPOWER SHUNT VOLTAGE REFERENCES

Diodes Incorporated. 

LM4040

PRECISION MICROPOWER SHUNT VOLTAGE REFERENCES

Description

The LM4040 is a family of bandgap circuits designed to achieve

precision micro-power voltage references of 2.5V, 3.0V and 5.0V. The

devices are available in 0.2% B-grade, 0.5% C-grade and 1% D-

grade initial tolerances.

Pin Assignments

(Top View)

They are available in small outline SOT23 surface mount packages

which are ideal for applications where space is at a premium.

Excellent performance is maintained over the 60µA to 15mA

operating current range with a typical temperature coefficient of only

20ppm/°C. The device has been designed to be highly tolerant of

capacitive loads so maintaining excellent stability.

This device offers a pin for pin compatible alternative to the LM4040

voltage reference.

Features

 Small Package: SOT23

 SC70-5 Variants Are End of Life (EOL)

 No Output Capacitor Required

 Output Voltage Tolerance

 LM4040B ±0.2% at +25°C

 LM4040C ±0.5% at +25°C

 LM4040D ±1% at +25°C

 Low Output Noise

 (10Hz to 10kHz) .............. 45µVRMS

 Wide Operating Current Range 60µA to 15mA

 Extended Temperature Range -40°C to +125°C

 Low Temperature Coefficient 100 ppm/°C (max)

 Green Molding in Small Package SOT23

 Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)

 Halogen and Antimony Free. “Green” Device (Note 3)

 An Automotive-Compliant Part is Available Under Separate

Datasheet (LM4040Q)

* Pin 3 must be left floating or connected to pin 2

SOT23

LM40(4T0opH5Vi(eSwC)70-5)

Anode 1

4 N/C

*2

Cathode 3

5 N/C

TSoCp7V0-ie5w**

* Pin 2 must be left floating or connected to pin 1

* Pin 2 must be left floating or connected to pin 1.

** SC70-5 variants are End of Life (EOL).

Applications

 Battery Powered Equipment

 Precision Power Supplies

 Portable Instrumentation

 Portable Communications Devices

 Notebook and Palmtop Computers

 Data Acquisition Systems

Notes:

1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.

2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green"

and Lead-free.

3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and

<1000ppm antimony compounds.

LM4040

Document number: DS33195 Rev. 7 - 2

1 of 12

www.diodes.com

February 2017

© Diodes Incorporated

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