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Texas Instruments LM336BMX-5.0
- Part No.:
- LM336BMX-5.0
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LM336BMX-5.0.pdf
- Description:
- IC VREF SHUNT 2% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,164
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Product details
Overview
LM336BMX-5.0 from Texas Instruments is a precision 5.0V shunt voltage reference in an 8-pin SOIC package, featuring ±1% initial tolerance, 0.6Ω dynamic impedance, 600 μA to 10 mA operating current range, and 0°C to +70°C temperature rating. It serves as a stable low-voltage reference in analog-to-digital converters, power supply feedback loops, and op-amp biasing circuits.
For engineers reviewing the LM336BMX-5.0 datasheet, LM336BMX-5.0 pinout, LM336BMX-5.0 application, or LM336BMX-5.0 equivalent, key selection considerations include its adjustable 4V–6V output range, low temperature coefficient, trimmable reference voltage, and compatibility with both positive and negative reference configurations.
Technical Context
The LM336BMX-5.0 operates as a monolithic shunt regulator with zener-like behavior but integrated temperature compensation circuitry. Its third terminal enables external trimming of both reference voltage and temperature coefficient without affecting one another.
It delivers stable 5.0V output across a wide reverse current range (600 μA–10 mA) while maintaining ≤12 mV temperature stability over 0°C to +70°C and ≤24 mV total variation across current and temperature extremes - critical for high-accuracy measurement and calibration systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reference Voltage | 5.00 V nominal at 1 mA; ±1% initial tolerance ensures minimal system-level calibration effort |
| Dynamic Impedance | 0.6 Ω typical; provides low AC error under varying load conditions in precision feedback paths |
| Operating Current | 600 μA to 10 mA; supports ultra-low-power sensor interfaces and high-current reference buffering |
| Temperature Range | 0°C to +70°C; rated for commercial-grade embedded instrumentation and industrial control panels |
| Temp Stability | ≤12 mV over 0°C to +70°C; enables <±0.024% drift in 5V references for 16-bit ADC systems |
| Adjustment Range | ±1.0 V typical; allows fine-tuning to compensate for PCB trace resistance and buffer amplifier offset |
| Long-Term Stability | 20 ppm after 1000 hrs; supports applications requiring multi-year calibration integrity without recalibration |
Pinout & Package
LM336BMX-5.0 is housed in an 8-pin SOIC (D) package with 1.27 mm pitch, 1.75 mm max height, and RoHS-compliant matte tin (SN) lead finish. The device uses standard SOIC pin 1 quadrant orientation (Q1) on tape-and-reel packaging.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Adjust | External trim node for setting reference voltage and minimizing temperature coefficient |
| Pin 2 | Cathode | Current sink terminal; connects to regulated output node in shunt configuration |
| Pin 3 | Anode | Ground or return path; establishes reference potential for cathode voltage regulation |
| Pins 4–8 | No Connect | Internally unconnected; electrically isolated and must remain floating per TI design |
Key Features
| Feature | Design Value |
|---|---|
| Trimmed temperature coefficient | Minimizes drift to ≤12 mV over full operating range via external diode network and potentiometer |
| Low dynamic impedance | 0.6 Ω maintains tight regulation even with fast transient loads in DAC reference buffers |
| Wide current operating range | 600 μA–10 mA enables use in battery-powered sensors and high-current linear regulators |
| Three-terminal architecture | Separate adjust, cathode, and anode pins allow independent optimization of voltage accuracy and thermal stability |
| Shunt topology flexibility | Supports both positive and negative reference generation without polarity inversion circuitry |
Applications
| Digital Multimeter Reference | Industrial Power Supply Feedback |
|---|---|
Use Scenario: High-accuracy 5.0V reference for 16-bit ADC front-end in handheld DMMs requiring long-term stability and low drift. IC Role / Device Role / Timing Role: Shunt voltage reference providing excitation and scaling reference for analog input channel. Use Value: ±1% initial tolerance and 20 ppm long-term stability eliminate factory recalibration cycles during product lifetime. | Use Scenario: Precision 5.0V setpoint in isolated flyback power supply feedback loop for programmable logic controllers. IC Role / Device Role / Timing Role: Primary voltage reference for optocoupler-coupled secondary-side regulation. Use Value: 0.6Ω dynamic impedance ensures minimal output ripple coupling into feedback path under line/load transients. |
| Op-Amp Biasing Network | Calibration Equipment Reference |
Use Scenario: Dual-rail op-amp biasing in portable data acquisition modules where rail symmetry and offset stability are critical. IC Role / Device Role / Timing Role: Symmetrical ±5.0V reference generator using two LM336BMX-5.0 devices in inverted configuration. Use Value: Adjustable ±1.0V range compensates for op-amp input offset and PCB layout asymmetry without redesign. | Use Scenario: Traceable 5.0V source in benchtop calibrators used for verifying multimeters and process transmitters. IC Role / Device Role / Timing Role: Primary DC reference standard within metrology-grade calibration hardware. Use Value: ≤12 mV temperature stability over 0°C–70°C meets ANSI/NCSL Z540-1 requirements for field calibration tools. |
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 | 2.5V nominal reference; adjustable 2.5V–36V via resistor divider; 0.22Ω dynamic impedance; wider temp range (−40°C to +125°C) | Requires external resistors for 5V output; higher accuracy (±0.5%) but less direct drop-in replacement | Preferred when system already uses TL431-based feedback and board space permits resistor network |
| REF5050AIDR | 5.0V precision series reference; 3ppm/°C drift; 10μVpp noise; 10mA max load; requires series pass element | Series topology demands external transistor for shunt-style current sinking; not pin-compatible | Chosen for ultra-low-noise, low-drift lab equipment where power efficiency is secondary to accuracy |
Compared with TL431ACDR and REF5050AIDR, the LM336BMX-5.0 offers direct 5.0V shunt operation without external components, lower cost, and simpler layout - making it optimal for cost-sensitive commercial instrumentation where ±1% initial tolerance and 12 mV temp stability meet specification.
Availability
LM336BMX-5.0 is available at Aetrix Electronics and suitable for digital multimeters, industrial power supplies, op-amp biasing networks, and calibration equipment requiring stable component supply and consistent parametric performance across production lots.
Supply support for LM336BMX-5.0 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 leader specializing in analog, embedded processing, and connectivity technologies with over 90 years of innovation in precision analog ICs.
The LM336 family was designed specifically for high-stability, low-cost shunt voltage reference applications in commercial-grade test equipment, power conversion, and signal conditioning systems.
FAQ
What is the maximum reverse current rating for LM336BMX-5.0?
The absolute maximum reverse current for LM336BMX-5.0 is 15 mA, per TI's SNVS750D datasheet Absolute Maximum Ratings table. Continuous operation above 10 mA is not recommended due to thermal derating effects; the specified operating range is 600 μA to 10 mA for guaranteed electrical performance including dynamic impedance and temperature stability. Exceeding 10 mA may increase junction temperature beyond 100°C, risking long-term reliability degradation in the LM336BMX-5.0.
Can LM336BMX-5.0 be used as a negative voltage reference?
Yes, LM336BMX-5.0 can be used as a negative voltage reference by reversing its connection: connect the anode to the system ground and the cathode to the negative rail, with the adjust pin configured accordingly. This shunt topology enables bidirectional reference generation without additional active components. The LM336BMX-5.0 datasheet explicitly states this capability, and Figure 21 ("Bipolar Output Reference") demonstrates a dual-polarity implementation using two LM336-5.0 devices - confirming that LM336BMX-5.0 supports negative reference operation in compliant designs.
Does LM336BMX-5.0 require external capacitors for stability?
No, LM336BMX-5.0 does not require external capacitors for basic DC stability, as confirmed by TI's typical application circuits (Figures 4–6, 14–15) and absence of capacitor recommendations in the "Application Hints" section. However, a 0.1 μF ceramic bypass capacitor placed close to the cathode-anode terminals is recommended for high-frequency noise suppression in noisy environments - particularly when used near switching regulators or microcontroller I/O. This practice improves PSRR and reduces high-frequency impedance spikes without altering the LM336BMX-5.0's core regulation behavior.
What is the purpose of Pin 1 (Adjust) on LM336BMX-5.0?
Pin 1 (Adjust) on LM336BMX-5.0 provides external access to the internal bandgap reference node, enabling precise trimming of both output voltage and temperature coefficient. As shown in Figure 14 and 15 of the SNVS750D datasheet, connecting a potentiometer between Pin 1 and Pin 3 (Anode) adjusts the breakdown voltage across ±1.0 V, while adding series diodes (e.g., 1N4148) between Pin 1 and ground minimizes temperature drift when adjusted to exactly 5.00 V. This three-terminal architecture distinguishes LM336BMX-5.0 from standard two-terminal zeners and enables optimization unattainable with fixed-reference alternatives.
Is LM336BMX-5.0 RoHS compliant and what is its MSL rating?
Yes, LM336BMX-5.0/NOPB.B is RoHS compliant with matte tin (SN) lead finish and carries a JEDEC Level-1 moisture sensitivity rating with unlimited floor life at ≤30°C/60% RH. Its peak reflow temperature is 260°C, validated for standard Pb-free soldering profiles. This information is documented in TI's PACKAGE OPTION ADDENDUM (15-Jul-2026), where LM336BMX-5.0/NOPB.B is explicitly listed as "Active", "Yes" for RoHS, and "Level-1-260C-UNLIM" - confirming full compliance for automated SMT assembly in commercial electronics manufacturing.
LM336BMX-5.0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Reference Type:
- Shunt
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 5V
- 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:
- 600 µA
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
LM336BMX-5.0 FAQ
1.How can I place an order for LM336BMX-5.0 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM336BMX-5.0 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 LM336BMX-5.0 reliable?
The price and inventory of LM336BMX-5.0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM336BMX-5.0 is usually 5 days.
3.What payment methods are accepted for LM336BMX-5.0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM336BMX-5.0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM336BMX-5.0?
LM336BMX-5.0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM336BMX-5.0 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 LM336BMX-5.0?
For technical support, including LM336BMX-5.0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM336BMX-5.0 requirements.
6.How does Aetrix verify that LM336BMX-5.0 is sourced from the original manufacturer or authorized distributors?
All LM336BMX-5.0 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 LM336BMX-5.0 meets industry standards.
7.What is the process for return or replacement of LM336BMX-5.0?
All LM336BMX-5.0 units undergo pre-shipment inspection (PSI). If there is an issue with LM336BMX-5.0, 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 LM336BMX-5.0 part is unused and in its original packaging.
Return procedure for LM336BMX-5.0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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