Description

Ideal for space critical applications, the LM4040CIM7X-4.1 is a precision voltage reference available in the subminiature (3mm × 1.3mm) SOT-23 surface-mount package. It is part of the LM4040 and LM4041 series. The LM4040 is available in fixed reverse breakdown voltages of 2.500V, 4.096V, and 5.000V, while the LM4041 is available with a fixed 1.225V or an adjustable reverse breakdown voltage. The minimum operating current ranges from 60µA to 74µA, depending on the specific version. The LM4040 has a maximum operating current of 15mA, while the LM4041 has a maximum operating current of 12mA. Both models have bandgap reference temperature drift curvature correction and low dynamic impedance, ensuring stable reverse breakdown voltage accuracy over a wide range of operating temperatures and currents. For more information and support documentation, please visit Micrel’s website at www.micrel.com.

Specifications and features

The LM4040CIM7X-4.1 has the following specifications and features:

• Small SOT-23 package
• No output capacitor required
• Tolerates capacitive loads
• Fixed reverse breakdown voltage of 4.1V
• Adjustable reverse breakdown version available
• Contact Micrel for parts with extended temperature range

Application Scenarios

The LM4040CIM7X-4.1 is commonly used in the following application scenarios:

• Battery-powered equipment
• Data acquisition systems
• Instrumentation
• Process control
• Energy management
• Product testing
• Automotive electronics
• Precision audio components

Comparison

• Small package size
• No output capacitor required
• Tolerates capacitive loads
• Stable reverse breakdown voltage accuracy

• Fixed reverse breakdown voltage
• Not suitable for applications requiring adjustable reverse breakdown voltage
• Limited maximum operating current
• Available only in specific breakdown voltages