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Texas Instruments LM336BM-2.5/NOPB
- Part No.:
- LM336BM-2.5/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LM336BM-2.5/NOPB.pdf
- Description:
- IC VREF SHUNT 2% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:5,232
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Product details
Overview
LM336BM-2.5/NOPB from Texas Instruments is a precision 2.5V shunt voltage reference diode in SOIC-8 package, featuring ±1% initial tolerance, 0.2Ω dynamic impedance, and guaranteed temperature stability over 0°C to +70°C. It operates as a low-temperature-coefficient zener replacement in analog front-ends, ADC/DAC biasing, and 5V-supply-derived references.
For engineers reviewing the LM336BM-2.5/NOPB datasheet, LM336BM-2.5/NOPB pinout, LM336BM-2.5/NOPB application, or LM336BM-2.5/NOPB equivalent, key selection criteria include operating current range (400 µA–10 mA), thermal drift performance (≤6 mV over 0°C–70°C), trimmability via external resistor, and SO-8 surface-mount compatibility for space-constrained designs.
Technical Context
The LM336BM-2.5/NOPB functions as a two-terminal shunt regulator with third-terminal trim capability-enabling precise adjustment of both breakdown voltage and temperature coefficient. Its monolithic construction delivers stable 2.5V reference output without requiring series pass transistors or external compensation networks.
It exhibits low dynamic impedance (0.2 Ω typ. at 1 mA), fast turn-on response, and guaranteed long-term stability (20 ppm/1000 hrs). Designed for use in feedback loops of switching regulators and precision op-amp circuits, it supports bidirectional polarity operation and tolerates reverse current up to 15 mA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reference Voltage | 2.490 V typical at 1 mA; ±1% initial tolerance ensures accurate system-level calibration without post-production trimming. |
| Dynamic Impedance | 0.2 Ω typical at 1 mA; minimizes output voltage variation under load transients in high-precision measurement circuits. |
| Operating Current Range | 400 µA to 10 mA; enables flexible biasing across low-power sensor interfaces and high-current reference buffers. |
| Temperature Stability | ≤6 mV over 0°C to +70°C; guarantees reference accuracy in commercial-grade industrial controllers and data acquisition systems. |
| Long-Term Stability | 20 ppm over 1000 hrs; reduces calibration drift in embedded instrumentation requiring multi-year operational reliability. |
| Thermal Resistance θJA | 165°C/W (SO-8); informs thermal design margin when operating near maximum ambient temperature limits. |
Pinout & Package
LM336BM-2.5/NOPB is housed in an 8-pin SOIC (Small Outline Integrated Circuit) package per NS Package Number M08A, with gull-wing leads optimized for automated reflow assembly and thermal dissipation in PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Current sink terminal | Connects to ground or negative rail; defines reference polarity and sets current path direction. |
| Cathode (Pin 2) | Reference output node | Provides regulated 2.5V output; must be decoupled with ≥0.1 µF ceramic capacitor for noise immunity. |
| Trim (Pin 3) | Adjustment terminal | Enables external resistor network to fine-tune breakdown voltage and minimize temperature coefficient drift. |
| NC (Pins 4–8) | No-connect terminals | Internally unconnected; left floating or tied to ground per layout best practices to avoid parasitic coupling. |
Key Features
| Feature | Design Value |
|---|---|
| Low temperature coefficient | Guaranteed ≤6 mV drift over full 0°C–70°C range-critical for battery-powered portable test equipment. |
| Easily trimmed reference | Third-terminal trim allows adjustment of both voltage and tempco without affecting each other's optimization. |
| Wide operating current | 400 µA–10 mA range supports ultra-low-power IoT sensors and high-current reference buffers alike. |
| Fast turn-on | Enables rapid power-up stabilization in microcontroller-based systems requiring immediate ADC reference availability. |
| ±1% initial tolerance | Reduces need for factory calibration in cost-sensitive consumer electronics and industrial control modules. |
Applications
| Digital Multimeter Reference | 5V-Supplied ADC Biasing |
|---|---|
Use Scenario: Precision DC voltage measurement in handheld DMMs powered by 9V alkaline batteries. IC Role / Device Role / Timing Role: Provides stable 2.5V reference for dual-slope integrator and comparator stages. Use Value: Enables ±0.1% absolute accuracy over temperature without recalibration due to guaranteed 6 mV max drift. |
Use Scenario: Analog input conditioning for 12-bit SAR ADCs in PLC I/O modules powered from 5V logic rails. IC Role / Device Role / Timing Role: Supplies clean, low-impedance reference to ADC VREF pin independent of supply ripple. Use Value: 0.2Ω dynamic impedance suppresses supply-induced error, improving ENOB by ≥0.5 bits at 10 kHz sampling. |
| Switching Regulator Feedback | Op-Amp Clamping Circuit |
Use Scenario: Voltage-setting element in isolated flyback converters for industrial power supplies. IC Role / Device Role / Timing Role: Shunt-connected to optocoupler LED to regulate secondary-side output voltage. Use Value: Wide 400 µA–10 mA operating range accommodates variable optocoupler CTR while maintaining regulation. |
Use Scenario: Output voltage limiter in rail-to-rail op-amp circuits driving analog multiplexers. IC Role / Device Role / Timing Role: Acts as precision clamp diode replacing standard Zeners to reduce leakage and improve linearity. Use Value: Low 0.2Ω impedance prevents signal distortion during clamping transitions, preserving waveform fidelity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL431ACDR | Programmable 2.5V reference with adjustable output (2.5V–36V); higher 0.22Ω impedance; requires external resistors. | Used where adjustable reference or higher voltage output is needed; lacks integrated trim terminal for tempco optimization. | Select TL431ACDR only if programmability or higher voltage range outweighs need for minimal tempco drift. |
| REF3025AIDBZR | 2.5V series reference with 3.5 ppm/°C tempco; 100 µA quiescent current; fixed 2.5V output; no trim capability. | Suitable for ultra-low-power battery applications but incompatible with shunt topology and bidirectional polarity use cases. | Choose REF3025AIDBZR only when series topology, lower IQ, or tighter tempco spec is mandatory-and shunt configuration is not required. |
Compared with TL431ACDR and REF3025AIDBZR, the LM336BM-2.5/NOPB uniquely combines fixed 2.5V shunt operation, third-terminal trim for tempco minimization, and SO-8 packaging-making it optimal for cost-sensitive, space-constrained commercial-grade instrumentation where predictable drift and simple biasing are prioritized.
Availability
LM336BM-2.5/NOPB is available at Aetrix Electronics and suitable for digital multimeters, 5V-supplied ADC subsystems, and switching regulator feedback circuits requiring stable component supply, consistent parametric performance, and RoHS-compliant packaging.
Supply support for LM336BM-2.5/NOPB includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor company delivering analog and embedded processing solutions, with leadership in precision analog, power management, and signal chain technologies.
The LM336 series belongs to TI's legacy precision voltage reference product line, designed specifically for commercial-grade shunt reference applications demanding low drift, easy trimmability, and robustness in non-aerospace industrial environments.
FAQ
What is the operating temperature range for LM336BM-2.5/NOPB?
The LM336BM-2.5/NOPB is rated for operation from 0°C to +70°C, as specified in the SNVS749D datasheet. This commercial-grade temperature range aligns with its SOIC-8 packaging and target applications in industrial controls and consumer instrumentation. The LM336BM-2.5/NOPB does not support extended or military temperature grades.
Does LM336BM-2.5/NOPB require external components to function as a reference?
Yes - the LM336BM-2.5/NOPB requires at minimum a current-limiting resistor to set operating current between 400 µA and 10 mA. For improved noise performance, a 0.1 µF ceramic capacitor is recommended between cathode and anode. The trim terminal (Pin 3) may connect to an external potentiometer only if voltage or tempco adjustment is needed; it can be left open otherwise.
Can LM336BM-2.5/NOPB be used as a negative voltage reference?
Yes - because the LM336BM-2.5/NOPB is a shunt regulator, it can operate with either polarity: connecting cathode to a positive rail and anode to ground yields +2.5V reference; reversing connections (anode to positive, cathode to ground) yields −2.5V reference. This bidirectional capability is explicitly confirmed in the SNVS749D General Description section.
What is the maximum reverse current rating for LM336BM-2.5/NOPB?
The absolute maximum reverse current for LM336BM-2.5/NOPB is 15 mA, as stated in the Absolute Maximum Ratings table of SNVS749D. Exceeding this value risks permanent damage. For reliable operation, the recommended operating current remains within 400 µA to 10 mA, where dynamic impedance and temperature stability are fully characterized.
Is LM336BM-2.5/NOPB RoHS compliant and lead-free?
Yes - LM336BM-2.5/NOPB carries the /NOPB suffix, indicating lead-free (Pb-free) packaging and RoHS compliance per TI's Banned Substances Specification CSP-9-111S2. The SOIC-8 body uses matte tin lead finish and meets JEDEC J-STD-020 moisture sensitivity level 3 requirements.
LM336BM-2.5/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Active
- Reference Type:
- Shunt
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 2.49V
- Voltage - Output (Max):
- -
- Current - Output:
- 10 mA
- Tolerance:
- ±2%
- Temperature Coefficient:
- -
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- -
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 400 µA
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
LM336BM-2.5/NOPB FAQ
1.How can I place an order for LM336BM-2.5/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM336BM-2.5/NOPB on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for LM336BM-2.5/NOPB reliable?
The price and inventory of LM336BM-2.5/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM336BM-2.5/NOPB is usually 5 days.
3.What payment methods are accepted for LM336BM-2.5/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM336BM-2.5/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM336BM-2.5/NOPB?
LM336BM-2.5/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM336BM-2.5/NOPB order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for LM336BM-2.5/NOPB?
For technical support, including LM336BM-2.5/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM336BM-2.5/NOPB requirements.
6.How does Aetrix verify that LM336BM-2.5/NOPB is sourced from the original manufacturer or authorized distributors?
All LM336BM-2.5/NOPB products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that LM336BM-2.5/NOPB meets industry standards.
7.What is the process for return or replacement of LM336BM-2.5/NOPB?
All LM336BM-2.5/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM336BM-2.5/NOPB, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The LM336BM-2.5/NOPB part is unused and in its original packaging.
Return procedure for LM336BM-2.5/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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