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Texas Instruments LM336BLP-2-5
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- Part No.:
- LM336BLP-2-5
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-226-3, TO-92-3 (TO-226AA)
- Datasheet:
-
LM336BLP-2-5.pdf
- Description:
- IC VREF SHUNT 2% TO92-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,148
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Product details
Overview
LM336BLP-2-5 from Texas Instruments is a precision 2.5-V shunt voltage reference diode in TO-92 package, featuring ±1% initial tolerance, 0.27-Ω dynamic impedance at 1 mA, and temperature stability of 1.8 mV over 0°C to 70°C. It operates as a low-temperature-coefficient Zener-type reference for analog-to-digital converters, power supply feedback loops, and instrumentation amplifiers.
For engineers reviewing the LM336BLP-2-5 datasheet, LM336BLP-2-5 pinout, LM336BLP-2-5 application, or LM336BLP-2-5 equivalent, key selection criteria include its 400 µA–10 mA operating current range, trimmable ADJ terminal for drift minimization, and compatibility with 5-V logic-derived reference designs.
Technical Context
The LM336BLP-2-5 implements a bandgap-based shunt regulator architecture with an internal adjustable reference core and three-terminal configuration (Anode, Cathode, ADJ). Its ADJ pin enables external trimming of both output voltage and temperature coefficient via a single potentiometer.
It functions as a two-terminal device when ADJ is left unconnected, delivering fixed 2.5 V with ±1% accuracy; with ADJ connected, it supports fine-tuning across ±10 mV while maintaining <6 mV total drift over full temperature range. The device exhibits fast turn-on and low 1-kHz noise of 250 nV/√Hz at 1 mA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reference Voltage | 2.49 V nominal at 1 mA; enables stable 2.5-V reference generation from 5-V supplies without regulation overhead. |
| Initial Tolerance | ±1% at 25°C; ensures first-pass accuracy in calibration-critical circuits like digital multimeters. |
| Dynamic Impedance | 0.27 Ω at 1 mA; maintains <2.6 mV output variation across 400 µA–10 mA load current changes. |
| Temp Stability | 1.8 mV over 0°C to 70°C; supports industrial-grade measurement systems without external compensation. |
| Operating Current | 400 µA to 10 mA; allows use in ultra-low-power sensor nodes and high-current feedback paths alike. |
| Long-Term Drift | 20 ppm/khr; guarantees <0.05% reference shift over 5 years in continuously powered applications. |
Pinout & Package
LM336BLP-2-5 uses the TO-92 (LP) through-hole package with 3 leads and 5.34 mm max height. Thermal resistance θJA = 140°C/W enables operation up to 70°C ambient without heatsinking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference ground node | Connected to system ground; defines return path for shunt current and sets reference polarity. |
| Cathode | Output voltage node | Provides regulated 2.5 V; sinks current into load or feedback network; requires series resistor from input supply. |
| ADJ | Trim control terminal | Enables external adjustment of reference voltage and temperature coefficient using a 10-kΩ potentiometer per Figure 5. |
Key Features
| Feature | Design Value |
|---|---|
| Low dynamic impedance | 0.27 Ω ensures minimal load-induced error in precision ADC reference buffers. |
| Adjustable temperature coefficient | Trimmed to <1.8 mV drift over 0°C–70°C, eliminating need for external thermistors. |
| Wide operating current range | 400 µA–10 mA supports both battery-powered sensors and high-speed DAC references. |
| Fast turn-on response | Stabilizes within microseconds-critical for power-on-reset circuits and burst-mode systems. |
Applications
| Digital Multimeter Reference | Industrial Power Supply Feedback |
|---|---|
Use Scenario: High-resolution 4½-digit DMM requiring stable 2.5-V reference for ADC conversion. IC Role / Device Role / Timing Role: Shunt voltage reference providing excitation voltage for successive-approximation register (SAR) ADC front-end. Use Value: ±1% initial tolerance and 20 ppm/khr long-term drift ensure metrology-grade accuracy without periodic recalibration. | Use Scenario: Isolated DC-DC converter with optocoupler feedback loop demanding precise output voltage regulation. IC Role / Device Role / Timing Role: Primary-side shunt reference generating error signal for TL431-compatible optocoupler driver stage. Use Value: 0.27-Ω dynamic impedance minimizes feedback loop gain variation across line/load transients. |
| Portable Instrumentation Amplifier | Microcontroller Analog Reference |
Use Scenario: Battery-powered handheld oscilloscope probe amplifier needing rail-to-rail input common-mode range. IC Role / Device Role / Timing Role: Dual-rail reference source establishing mid-supply bias point for op-amp input stages. Use Value: 400 µA minimum operating current enables operation from coin-cell batteries for >1 year. | Use Scenario: STM32-based data logger using internal ADC with external reference input for enhanced resolution. IC Role / Device Role / Timing Role: External VREF+ source replacing noisy internal bandgap reference to improve ENOB by 1.5 bits. Use Value: Low 1-kHz noise (250 nV/√Hz) reduces quantization uncertainty in 12-bit sampling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL431ACLP | 2.495 V reference, ±1% tolerance, but requires minimum 1 mA cathode current and lacks ADJ pin for trimming. | Fixed-reference-only use; unsuitable for temperature-coefficient optimization or fine voltage adjustment. | Select when board space permits SO-8 and no trimming capability is needed. |
| LM385BLP-2-5 | 2.5 V reference with 10-µA typical operating current, higher dynamic impedance (10 Ω), and wider temp range (−40°C to 85°C). | Better suited for ultra-low-power systems; less stable under varying load conditions than LM336BLP-2-5. | Select when sub-100-µA quiescent current is mandatory and 10-Ω impedance is acceptable. |
Compared with TL431ACLP and LM385BLP-2-5, the LM336BLP-2-5 uniquely balances trimmability, low impedance, and industrial temperature range in a low-cost TO-92 package-making it optimal for cost-sensitive, performance-critical analog reference designs where layout flexibility and thermal management are constrained.
Availability
LM336BLP-2-5 is available at Aetrix Electronics and suitable for digital multimeters, industrial power supplies, portable instrumentation amplifiers, and microcontroller analog reference circuits requiring stable component supply and long-term calibration integrity.
Supply support for LM336BLP-2-5 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 headquartered in Dallas, Texas, specializing in analog and embedded processing technologies with over 90 years of innovation in precision analog ICs.
The LM336 family was designed specifically for high-stability, low-drift voltage reference applications in test equipment, industrial controls, and precision power systems-emphasizing manufacturability, thermal robustness, and ease of calibration.
FAQ
What is the maximum operating temperature range for LM336BLP-2-5?
The LM336BLP-2-5 is characterized for operation from 0°C to 70°C ambient temperature. This range is specified in the TI SLVS063E datasheet and applies to all LM336B variants in TO-92 packaging. Exceeding 70°C ambient may cause voltage drift beyond guaranteed limits and reduce long-term reliability due to thermal stress on the die and bond wires.
Can LM336BLP-2-5 be used as a negative voltage reference?
Yes, the LM336BLP-2-5 can function as a negative voltage reference by reversing its connection: connect the Cathode to system ground and the Anode to the negative rail. In this configuration, it regulates −2.5 V relative to ground. The ADJ pin remains functional for trimming, and all electrical specifications-including dynamic impedance and temperature stability-apply identically in inverted mode.
What is the purpose of the ADJ pin on LM336BLP-2-5?
The ADJ pin on LM336BLP-2-5 provides access to the internal reference core's trim node, enabling external adjustment of both output voltage and temperature coefficient. When connected to a 10-kΩ potentiometer between Anode and Cathode (per Figure 5), it allows fine-tuning of VZ across ±10 mV while minimizing total drift over temperature-critical for metrology-grade applications.
How does LM336BLP-2-5 differ from LM336LP-2-5?
The LM336BLP-2-5 features tighter initial tolerance (±1% vs. ±2%), lower temperature drift (1.8 mV vs. 3.5 mV over 0°C–70°C), and improved long-term stability (20 ppm/khr vs. unspecified for standard LM336LP-2-5). Both share identical TO-92 packaging and pinout, but the "B" suffix denotes enhanced grade with tighter parametric screening and characterization.
Is LM336BLP-2-5 RoHS compliant?
Yes, LM336BLP-2-5 is RoHS compliant, as confirmed in TI's official Package Option Addendum dated July 2026. The device uses Sn (tin) lead finish and meets EU Directive 2011/65/EU requirements. No exemptions apply, and the part marking "336B25" appears on all compliant units shipped in bulk packaging.
LM336BLP-2-5 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- TO-226-3, TO-92-3 (TO-226AA)
- Series:
- -
- Packaging:
- Bulk
- 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:
- Through Hole
- Supplier Device Package:
- TO-92-3
LM336BLP-2-5 FAQ
1.How can I place an order for LM336BLP-2-5 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM336BLP-2-5 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 LM336BLP-2-5 reliable?
The price and inventory of LM336BLP-2-5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM336BLP-2-5 is usually 5 days.
3.What payment methods are accepted for LM336BLP-2-5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM336BLP-2-5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM336BLP-2-5?
LM336BLP-2-5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM336BLP-2-5 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 LM336BLP-2-5?
For technical support, including LM336BLP-2-5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM336BLP-2-5 requirements.
6.How does Aetrix verify that LM336BLP-2-5 is sourced from the original manufacturer or authorized distributors?
All LM336BLP-2-5 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 LM336BLP-2-5 meets industry standards.
7.What is the process for return or replacement of LM336BLP-2-5?
All LM336BLP-2-5 units undergo pre-shipment inspection (PSI). If there is an issue with LM336BLP-2-5, 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 LM336BLP-2-5 part is unused and in its original packaging.
Return procedure for LM336BLP-2-5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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