1FEATURES

2• Small Package: SOT-23

• No Output Capacitor Required

• Tolerates Capacitive Loads

• Fixed Reverse Breakdown Voltage of 2.50V

APPLICATIONS

• Portable, Battery-Powered Equipment

• Data Acquisition Systems

• Instrumentation

• Process Control

• Energy Management

• Product Testing

• Power Supplies

KEY SPECIFICATIONS

• Output Voltage Tolerance: 25°C: ±2.0% (Max)

• Low Output Noise (10 Hz to 10 kHz): 35 μVrms

(Typ)

• Wide Operating Current Range: 100 μA to 15

mA

• Commercial Temperature Range: 0 to +70 °C

• Low Temperature Coefficient: 30 ppm/°C (Typ)

DESCRIPTION

Ideal for space critical applications, the LM4431

voltage reference is available in the sub-miniature

(3 mm x 1.3 mm) SOT-23 surface-mount package.

The LM4431's advanced design eliminates the need

for an external stabilizing capacitor while ensuring

stability with any capacitive load, thus making the

LM4431 easy to use. The operating current range is

100 μA to 15 mA.

The LM4431 utilizes fuse and zener-zap reverse

breakdown voltage trim during wafer sort to ensure

that the parts have an accuracy of better than ±2.0%

at 25°C. Bandgap reference temperature drift

curvature correction and low dynamic impedance ensure stable reverse breakdown voltage accuracy

over a wide range of operating temperatures and

currents.