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, 3.3V, 4.096V,
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 is designed to be highly tolerant of capacitive
loads, which maintains 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
* Pin 2 must be left flToSaoCtpin7gV0-oie5rw*c*onnected 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) & 2015/863/EU (RoHS 3) compliant.
2. See https://www.diodes.com/quality/lead-free/ 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. 8 - 2
1 of 16
www.diodes.com
August 2019
© Diodes Incorporated