LM385BYMX-1.2

Overview

The LM385BYMX-1.2 is a micropower voltage reference diode manufactured by Texas Instruments, utilizing bipolar bandgap technology to provide a stable 1.235 V output. It operates within a wide current range of 10 µA to 20 mA, ensuring low dynamic impedance and excellent temperature stability. The device features an initial accuracy of ±1% and a maximum temperature coefficient of 20 ppm/°C. Designed for surface-mount applications, it is housed in an 8-SOIC package with a width of 3.90 mm. The component supports an operating temperature range from 0°C to +70°C, making it suitable for commercial electronic circuits requiring precise voltage regulation.

Feature Summary

• Provides a fixed 1.235 V reference output with high precision
• Operates efficiently across a wide current range from 10 µA to 20 mA
• Features low dynamic impedance for stable performance under varying loads
• Ensures long-term stability through integrated bandgap reference design

Applications

• Battery-powered portable instruments
• Precision analog signal conditioning circuits
• Data acquisition systems requiring stable reference voltages
• General-purpose稳压电源 designs

Procurement Notes

Verify the specific suffix and tape-and-reel packaging configuration when ordering. Confirm RoHS compliance status as manufacturing updates may occur. Ensure the selected distributor provides genuine Texas Instruments components to guarantee electrical parameter accuracy and reliability for critical circuit designs.

Selection Notes

Select this component when a fixed 1.235 V reference is required in a compact surface-mount format. Consider the ±1% initial tolerance and 20 ppm/°C temperature coefficient against application requirements. Evaluate the 8-SOIC footprint compatibility during PCB layout. Compare against adjustable variants if flexible voltage setting is needed instead of a fixed output.

Part Context

This part belongs to the LM385 family of micropower voltage references, which includes adjustable and fixed versions at 1.2 V and 2.5 V. The family utilizes bipolar bandgap technology for low noise and high stability. Variants differ primarily in package type, such as TO-92 or SOT-23, and accuracy grades, offering flexibility for various commercial and industrial applications.

Replacement Considerations

LM385BDRG4-1-2 is a documented alternative in the same series.