TI LM385M3-12/NOPB

Mfr. Part

LM385M3-12/NOPB

Manufacturer

Luminary Micro and Texas Instruments

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Detailed Description

Micropower shunt voltage reference in a tiny SOT-23 package

Nominal reference around 1.235 V for easy low voltage precision referencing

Designed for low current operation while maintaining stable reference voltage

Ideal drop-in replacement for discrete zener diodes with far better stability and temperature performance

Key Features

Small SOT-23 footprint for dense PCBs and portable devices

Low operating current to extend battery life

Stable 1.2 V class reference with tight accuracy options

Low dynamic impedance for good load regulation

Wide operating temperature range for industrial environments

Lead free NOPB green manufacturing for RoHS compliance

Simple two wire shunt usage with optional adjust or trim pin

Key Advantages

Easy to use as a precise zener replacement with improved stability

Micropower design reduces power consumption in low energy systems

Minimal external components needed for a stable reference node

Consistent performance over temperature and time for long term reliability

Very small package saves board area without sacrificing precision

Packaging

Type SOT-23 3 pin also known as TI package code DBZ

Material epoxy mold compound body with matte tin plated copper leads halogen free lead free NOPB

Size body about 2.9 mm x 1.3 mm height about 1.1 mm typical

Pin configuration 3 pins Cathode Anode Adjust or Trim consult datasheet figure for exact pin numbers and orientation

Thermal characteristics typical junction to ambient thermal resistance around 200 C per watt on standard PCB conditions actual value depends on layout and airflow

Electrical properties shunt reference behavior nominal reference near 1.235 V low dynamic impedance low operating current range from tens of microamps to tens of milliamps check datasheet for exact limits and grades

Lifecycle

Current status widely available and not flagged for discontinuation based on public information

If a lifecycle change occurs we will support smooth transitions

Equivalent and alternative models from Texas Instruments

- LM4040AIM3-1.2 series reference fixed 1.2 V in SOT-23 for ultra simple low noise series designs

- REF3312AIDCK series reference 1.2 V nano power very small footprint for battery powered precision

- TLVH431AIDBZ adjustable shunt reference with 1.24 V reference flexible setpoint via resistors SOT-23

- TLV431AIDBZR adjustable shunt reference 1.24 V reference widely used and cost effective SOT-23

- LM285-1.2 legacy shunt reference family similar function available in multiple packages

- LM185-1.2 high grade temperature range variant of the LMx85 family for rugged environments

If you need exact pin to pin or performance matching contact our sales team through the Y-IC website for detailed cross reference support and the latest availability

Key Application Areas

ADC and DAC reference nodes in low voltage systems

Threshold and comparator reference points for battery monitors and supervisors

Portable and wearable devices requiring micropower precision

Sensor biasing and instrumentation front ends

Industrial control modules and power supplies

Automotive and medical electronics where stable low voltage reference is required

Datasheet

Y-IC hosts the most authoritative datasheet for LM385M3-12/NOPB on our product page

We recommend downloading the datasheet here to verify all electrical limits pinouts and application guidance

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