LM336BM-5.0

Overview

The LM336BM-5.0 is a precision 5.0V shunt voltage reference integrated circuit manufactured by Texas Instruments. It operates as a low temperature coefficient 5.0V Zener diode with a dynamic impedance of 0.6 ohms. The device features an adjustable output range from 4V to 6V and supports a wide operating current range up to 400mA. It offers ±1.0% initial tolerance and is easily trimmed for minimum temperature drift. The component is housed in an SOIC-8 surface-mount package, suitable for applications requiring stable references from low voltage supplies.

Feature Summary

• Precision 5.0V shunt regulator operation with low temperature coefficient
• Adjustable reference voltage range from 4V to 6V via third terminal
• Low dynamic impedance of 0.6 ohms for stable regulation
• Wide operating current capability supporting up to 400mA

Applications

• Digital voltmeter reference circuits
• Power supply voltage regulation
• Operational amplifier biasing

Procurement Notes

Verify the specific suffix 'BM' indicates the SOIC-8 package variant distinct from the TO-92 'Z' version. Confirm RoHS compliance status and ensure the ordering part number matches the required surface-mount configuration. Check for any specific environmental certifications or automotive qualifications if applicable to the target design.

Selection Notes

Select this component when a surface-mount solution is required for a 5.0V reference. The SOIC-8 package facilitates automated assembly compared to through-hole alternatives. Ensure the design accommodates the shunt topology requirements and provides adequate heat dissipation for currents approaching the maximum limit.

Part Context

This part belongs to the LM336 series of precision voltage references. While the LM336Z-5.0/NOPB utilizes a TO-92 through-hole package, the LM336BM-5.0 variant employs an SOIC-8 surface-mount footprint. Both share core electrical characteristics but differ in physical mounting and thermal management considerations.

Replacement Considerations

LM336Z-5.0/NOPB (TO-92 package equivalent)

FAQ

How does the LM336BM-5.0 handle negative voltage referencing?

Since it operates as a shunt regulator, it can be configured to serve as either a positive or negative voltage reference depending on the circuit topology.

What is the purpose of the third terminal on the LM336BM-5.0?

The third terminal allows for easy trimming of the reference voltage and temperature coefficient to minimize drift.