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.
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)

Applications
• Battery Powered Equipment
• Precision Power Supplies
• Portable Instrumentation
• Portable Communications Devices
• Notebook and Palmtop Computers
• Data Acquisition Systems