GENERAL DESCRIPTION

The LM431BQ is a precision programmable shunt voltage reference that can be used in automotive applications. It is a three-terminal adjustable-output device that can keep stable under all capacitive loads. It requires two external resistors to set the output voltage from VREF to 36V.

The LM431BQ features low dynamic impedance, low noise, and low temperature coefficient to ensure a stable output voltage over a wide range of operating temperatures and currents. These high performances make it very suitable for multiple applications, such as precision audio components and flyback switching power supplies.

This device is AEC-Q100 qualified (Automotive Electronics Council (AEC) standard Q100 Grade 1) and it is suitable for automotive applications.

The LM431BQ is available in a Green SOT-23 package.

FEATURES

● AEC-Q100 Qualified for Automotive Applications

Device Temperature Grade 1

TA = -40℃ to +125℃

● Adjustable Output Voltage: VREF to 36V

● Sink-Current Capability: 1mA to 100mA

● ▲Reference Voltage Tolerance at +25℃: 0.5

● Temperature Drift: 5mV (TYP)

● Output Impedance: 0.1Ω (TYP)

● ▲High Stability under Capacitive Load

● Low Output Noise

● Operating Junction Temperature Range:

-40℃ to +125℃

● Available in a Green SOT-23 Package

APPLICATIONS

AEC-Q100 Grade 1 Applications

Portable, Battery-Powered Equipment

Voltage Monitoring

Flyback Switching Power Supplies

Instrumentation

Product Testing

Precision Audio Components