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Texas Instruments LM336MX-5.0
- Part No.:
- LM336MX-5.0
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LM336MX-5.0.pdf
- Description:
- IC VREF SHUNT 2% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,165
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Product details
Overview
LM336MX-5.0 from Texas Instruments is a precision 5.0V shunt voltage reference diode in an SOIC-8 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 digital voltmeters, power supply feedback loops, and op amp biasing circuits.
For engineers reviewing the LM336MX-5.0 datasheet, LM336MX-5.0 pinout, LM336MX-5.0 application, or LM336MX-5.0 equivalent, key selection criteria include its 5.0V nominal output with low temperature coefficient, trimmable breakdown voltage (±1V range), wide current compliance, and SOIC-8 compatibility for surface-mount production environments.
Technical Context
The LM336MX-5.0 operates as a monolithic shunt regulator, functioning like a precision zener diode with active temperature compensation circuitry. Its three-terminal architecture enables external adjustment of both output voltage and temperature coefficient via external resistors or diodes.
Unlike two-terminal references, it supports bidirectional polarity use-configurable as either positive or negative voltage reference-and maintains stable regulation across its full 600 μA–10 mA operating current range without requiring minimum load current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.00 V nominal at 1 mA; ±1% initial tolerance ensures accurate system-level calibration without post-manufacture trimming. |
| Dynamic Impedance | 0.6 Ω typical; minimizes output voltage variation under load transients, critical for high-precision ADC reference and feedback stability. |
| Operating Current | 600 μA to 10 mA; supports ultra-low-power sensor interfaces and high-current regulator applications without external buffering. |
| Temperature Range | 0°C to +70°C; qualified for commercial-grade embedded systems, industrial control panels, and consumer electronics. |
| Temp Stability | ±4 mV over 0°C to 70°C (typical); enables stable 12-bit+ measurement accuracy without external compensation circuitry. |
| Adjustment Range | ±1 V via external potentiometer; allows fine-tuning to compensate for PCB trace resistance, buffer amplifier offset, or aging drift. |
Pinout & Package
LM336MX-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-8 land pattern per JEDEC MS-012 variation AA.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Adjust | Provides access to internal bandgap node for trimming output voltage and temperature coefficient using external resistor network. |
| Pin 2 | Cathode | Primary current sink terminal; connects to regulated output node or feedback point in shunt configuration. |
| Pin 3 | Anode | Reference ground return path; must be connected directly to system ground plane for optimal noise rejection. |
| Pins 4–8 | No Connect | Internally unconnected; left floating per TI datasheet - no external tie required or recommended. |
Key Features
| Feature | Design Value |
|---|---|
| Low Temperature Coefficient | Typically ±4 mV over 0°C to +70°C enables stable reference performance in uncontrolled ambient environments. |
| Trimmed Output Voltage | External adjustment range of ±1 V allows correction of system-level errors without redesigning feedback networks. |
| Fast Turn-on | Sub-microsecond response to current step changes supports dynamic load regulation in switching power supplies. |
| Wide Operating Current | 600 μA–10 mA range eliminates need for current-limiting resistors in many applications, simplifying BOM and layout. |
| Three-Terminal Architecture | Independent adjust pin enables simultaneous optimization of voltage accuracy and thermal drift - not possible with two-terminal zeners. |
Applications
| Digital Voltmeter Reference | Op Amp Precision Biasing |
|---|---|
Use Scenario: High-resolution handheld DVM measuring 0–5 V DC signals with 16-bit ADC resolution. IC Role / Device Role / Timing Role: Provides stable 5.00 V reference for ADC full-scale calibration and ratiometric scaling. Use Value: ±1% initial tolerance and <±4 mV temp drift ensure consistent measurement accuracy across operating temperature without recalibration. | Use Scenario: Rail-to-rail op amp used in sensor signal conditioning with single-supply 5 V operation. IC Role / Device Role / Timing Role: Generates precise mid-rail (2.5 V) virtual ground via resistor divider from 5.00 V reference. Use Value: 0.6 Ω dynamic impedance prevents loading-induced offset shift when driving op amp input bias currents. |
| Switching Power Supply Feedback | Programmable Shunt Regulator |
Use Scenario: Isolated flyback converter delivering 5 V/3 A with optocoupler-based feedback loop. IC Role / Device Role / Timing Role: Serves as primary-side voltage reference for TL431-like error amplifier configuration. Use Value: Adjustable breakdown voltage allows fine-tuning of output setpoint to compensate for transformer turns ratio tolerance and optocoupler CTR variation. | Use Scenario: Programmable current source for LED driver or battery charger IC requiring adjustable voltage clamp. IC Role / Device Role / Timing Role: Configured as adjustable shunt regulator with external potentiometer to set clamp threshold between 4 V and 6 V. Use Value: ±1 V trim range and low dynamic impedance enable stable clamping across varying load conditions without oscillation. |
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 | 2.495 V adjustable reference; requires external resistors to set 5.0 V; higher 0.2 Ω typical impedance. | Used in feedback loops where adjustable threshold is mandatory; lacks factory-trimmed 5.0 V option. | Select when cost sensitivity outweighs need for fixed 5.0 V accuracy and minimal external components. |
| REF5050AIDR | 5.0 V series reference; 3 V to 18 V input range; 3 ppm/°C drift; 100 μA quiescent current. | Requires dedicated supply rail; unsuitable for shunt configurations or bidirectional polarity use. | Select when ultra-low drift and series topology are acceptable, and board space permits additional decoupling and supply routing. |
Compared with TL431ACDR and REF5050AIDR, the LM336MX-5.0 offers factory-trimmed 5.0 V output with zero external components needed for basic operation, bidirectional polarity support, and direct compatibility with legacy zener-based designs - making it optimal for cost-sensitive, space-constrained shunt reference applications.
Availability
LM336MX-5.0 is available at Aetrix Electronics and suitable for digital instrumentation, power supply feedback, op amp biasing, and sensor interface circuits requiring stable component supply and commercial-temperature-grade reliability.
Supply support for LM336MX-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 50 years of innovation in precision analog ICs.
The LM336 family was designed specifically for applications demanding stable, low-drift, trimmable shunt voltage references in commercial and industrial environments - bridging the gap between discrete zeners and complex series references.
FAQ
What is the maximum reverse current rating for LM336MX-5.0?
The absolute maximum reverse current for LM336MX-5.0 is 15 mA, as specified in the TI SNVS750D datasheet. Operation above this limit risks permanent damage. For reliable long-term performance, TI recommends staying within the 600 μA to 10 mA operating current range, where LM336MX-5.0 delivers specified voltage accuracy and dynamic impedance. Exceeding 10 mA may increase self-heating and degrade temperature stability.
Can LM336MX-5.0 be used as a negative voltage reference?
Yes, LM336MX-5.0 can be used as a negative voltage reference by reversing its anode and cathode connections relative to ground - a capability enabled by its shunt regulator architecture. When configured this way, it regulates the voltage between its cathode (now tied to system ground) and anode (now the negative reference node). This polarity flexibility is confirmed in the TI SNVS750D datasheet and makes LM336MX-5.0 suitable for bipolar op amp supplies and dual-rail instrumentation circuits.
Does LM336MX-5.0 require external capacitors for stability?
No, LM336MX-5.0 does not require external capacitors for basic stability - its internal design ensures unconditional stability across its full 600 μA to 10 mA operating range. However, a 0.1 μF ceramic capacitor placed close to the cathode and anode pins is recommended for high-frequency noise suppression in noisy environments such as switch-mode power supplies. This capacitor does not affect regulation but improves PSRR and reduces high-frequency ripple on the reference node.
What is the purpose of Pin 1 (Adjust) on LM336MX-5.0?
Pin 1 (Adjust) on LM336MX-5.0 provides access to the internal bandgap reference node, enabling external trimming of both output voltage and temperature coefficient. By connecting a potentiometer between Pin 1 and either cathode or anode, users can adjust the breakdown voltage over a ±1 V range. Adding silicon signal diodes (e.g., 1N4148) in series with the potentiometer further minimizes temperature drift - a technique explicitly documented in Figure 15 of the LM336MX-5.0 datasheet.
How does LM336MX-5.0 differ from LM336BZ-5.0?
LM336MX-5.0 and LM336BZ-5.0 share identical electrical specifications including 5.00 V nominal output, ±1% tolerance, and 0°C to +70°C rating, but differ in package and pin count: LM336MX-5.0 uses an 8-pin SOIC package with Pins 4–8 unconnected, while LM336BZ-5.0 uses a 3-pin TO-92 plastic package. The SOIC version supports automated assembly and higher thermal dissipation (θJA = 165°C/W vs. 180°C/W), whereas the TO-92 version offers through-hole compatibility and lower cost in low-volume prototyping.
LM336MX-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
LM336MX-5.0 FAQ
1.How can I place an order for LM336MX-5.0 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM336MX-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 LM336MX-5.0 reliable?
The price and inventory of LM336MX-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 LM336MX-5.0 is usually 5 days.
3.What payment methods are accepted for LM336MX-5.0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM336MX-5.0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM336MX-5.0?
LM336MX-5.0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM336MX-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 LM336MX-5.0?
For technical support, including LM336MX-5.0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM336MX-5.0 requirements.
6.How does Aetrix verify that LM336MX-5.0 is sourced from the original manufacturer or authorized distributors?
All LM336MX-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 LM336MX-5.0 meets industry standards.
7.What is the process for return or replacement of LM336MX-5.0?
All LM336MX-5.0 units undergo pre-shipment inspection (PSI). If there is an issue with LM336MX-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 LM336MX-5.0 part is unused and in its original packaging.
Return procedure for LM336MX-5.0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM336MX-5.0 Tags
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