Diodes Inc. LM4040B25FTA Precision Micropower Shunt Voltage Reference 2.5V SOT-

The Diodes Inc. LM4040B25FTA is a precision, micropower shunt voltage reference delivering a fixed 2.5V output. It is designed for space-constrained applications where board real estate is at a premium, offering a pin-for-pin compatible alternative to the standard LM4040. The device maintains excellent performance across a wide 60µA to 15mA operating current range, featuring a typical low temperature coefficient of only 20ppm/°C for stable operation over temperature variations.

Engineered to be highly tolerant of capacitive loads, this reference ensures excellent stability without the need for an external output capacitor, simplifying design and reducing component count. The device boasts a tight ±0.2% output voltage tolerance at 25°C and low output noise, making it suitable for precision applications.

Key Features

• No output capacitor required
• ±0.2% output voltage tolerance at 25°C
• Low output noise
• Wide operating current range: 60µA to 15mA
• Low temperature coefficient: ±20ppm/°C

Applications

This voltage reference is ideal for power management, portable devices, sensing instrumentation, computers and computer peripherals, test and measurement, and automotive systems. It is AEC-Q100 qualified for automotive use and comes in a compact SOT-23 package.

Specifications

• Voltage Reference Type: Shunt – Fixed
• Product Range: LM4040
• Reference Voltage: 2.5V
• Initial Accuracy: 0.2%
• Temperature Coefficient: ±20ppm/°C
• IC Case / Package: SOT-23
• No. of Pins: 3
• IC Mounting: Surface Mount
• Operating Temperature Range: -40°C to 125°C