Texas Instruments LM385MX/NOPB

Mfr. Part

LM385MX/NOPB

Manufacturer

Luminary Micro/Texas Instruments. Y-IC is a quality distributor for this brand and we are committed to delivering the best products and services to every customer.

Detailed Description

Adjustable shunt voltage reference in an 8-SOIC surface-mount package. Output can be set from 1.24 V to 5.3 V with ±2% initial accuracy, 30 ppm/°C temperature coefficient, and up to 20 mA output current. Designed for easy use in power management and precision reference applications. RoHS3 compliant. Supplied in tape-and-reel for automated assembly. Base product family: LM385.

Key Features

Reference type: Shunt

Output voltage range: Adjustable 1.24 V to 5.3 V

Accuracy: ±2% initial tolerance

Temperature coefficient: 30 ppm/°C

Output current: up to 20 mA

Noise (10 Hz to 10 kHz): 50 Vrms (as provided)

Operating temperature: 0°C to 70°C (TA)

Package: 8-SOIC, 3.90 mm width (0.154")

Mounting: Surface mount

RoHS: ROHS3 Compliant

Packaging format: Tape & Reel (TR)

Category: Integrated Circuits (ICs) — PMIC Voltage Reference

Base product number: LM385

Key Advantages

Simple, robust shunt topology—easy to design in with few external parts

Wide adjust range supports common rails (1.8 V, 3.3 V, 5 V)

Stable performance over temperature (low drift at 30 ppm/°C)

Compact SOIC-8 footprint simplifies PCB layout and routing

Proven TI LM385 family reliability and broad ecosystem support

Ready stock at Y-IC (2289 units available) for fast fulfillment

RoHS3 compliance helps meet modern environmental requirements

Packaging

format: Tape & Reel (TR)

Category: Integrated Circuits (ICs) — PMIC Voltage Reference

Base product number: LM385

Key Advantages

Simple, robust shunt topology—easy to design in with few external parts

Wide adjust range supports common rails (1.8 V, 3.3 V, 5 V)

Stable performance over temperature (low drift at 30 ppm/°C)

Compact SOIC-8 footprint simplifies PCB layout and routing

Proven TI LM385 family reliability and broad ecosystem support

Ready stock at Y-IC (2289 units available) for fast fulfillment

RoHS3 compliance helps meet modern environmental requirements

Packaging

Type: Tape & Reel (TR) for high-volume, automated pick-and-place

Package/Case: 8-SOIC (JEDEC), body width ~3.90 mm (0.154")

Supplier device package: 8-SOIC

Material: Molded epoxy body, copper leadframe, standard lead finish (Pb‑free)

Pin configuration: 8 leads; functional pins include Cathode, Anode, and Reference/Adjust; remaining pins are typically no‑connect

Mounting: Surface-mount (SMT)

Thermal characteristics: Typical SOIC thermal behavior; effectiveness depends on PCB copper area and airflow. Use adequate copper around cathode/anode for better heat spreading.

Electrical properties (from provided parameters): ±2% tolerance, 1.24–5.3 V adjustable output, up to 20 mA output current, 30 ppm/°C tempco, low noise over 10 Hz–10 kHz band

Lifecycle

Current status: Generally active in the TI LM185/LM285/LM385 family. No broad end‑of‑life notice observed for LM385MX/NOPB in typical industry references.

Direct family alternatives:

- LM385BMX/NOPB (same family, tighter 1% accuracy)

- LM285MX/NOPB (industrial temperature grade, −40°C to +85°C)

- LM185 series (extended/military temperature grade)

Functional alternatives (adjustable shunt references with similar use cases):

- TI LMV431A/LMV431B (1.24 V adjustable shunt regulator, low‑voltage operation)

- TI TLV431A/TLV431B (1.24 V shunt reference family)

- TI TL431A/TL431B (2.5 V adjustable shunt reference; different nominal Vref)

- onsemi NCP431A/NCP431B (TL431‑compatible, 2.5 V)

- Diodes Inc AZ431/AS431 (TL431‑compatible)

- Vishay TL431A/TLV431A (equivalents)

If you need exact pin‑for‑pin or performance‑matched replacements, or if your application has special requirements, please contact our sales team via the Y-IC website for tailored guidance and the latest lifecycle updates.

Key Application Areas

Precision references for ADCs and DACs

Regulated rails for microcontrollers and logic

Power supply calibration and trimming

Sensor biasing and instrumentation front ends

Battery‑powered and portable electronics

Data acquisition systems and test equipment

LED/current drivers needing a stable reference

General PMIC reference generation in embedded systems

Datasheet

Y-IC hosts the most authoritative datasheet for LM385MX/NOPB on our product page. We recommend downloading it here to verify all parameters and design details. If any third‑party listings show conflicting values, always rely on our datasheet.

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