My Inquiry
My Account
Texas Instruments LM336BZ-2.5/NOPB
- Part No.:
- LM336BZ-2.5/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-226-3, TO-92-3 (TO-226AA)
- Datasheet:
-
LM336BZ-2.5/NOPB.pdf
- Description:
- IC VREF SHUNT 2% TO92-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,315
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LM336BZ-2.5/NOPB from Texas Instruments is a precision 2.5V shunt voltage reference diode in TO-92 package, designed for stable low-voltage referencing in analog and mixed-signal circuits. It delivers ±1% initial tolerance, 0.2Ω dynamic impedance, and operates across 0°C to +70°C with 400 μA–10 mA supply current range-ideal for 5V-supplied instrumentation and op-amp biasing.
For engineers reviewing the LM336BZ-2.5/NOPB datasheet, LM336BZ-2.5/NOPB pinout, LM336BZ-2.5/NOPB application, or LM336BZ-2.5/NOPB equivalent, key selection criteria include temperature coefficient stability (≤6 mV over 0°C–70°C), low dynamic impedance for noise-sensitive references, trimmable breakdown voltage, and TO-92 compatibility with legacy through-hole layouts.
Technical Context
The LM336BZ-2.5/NOPB functions as a two-terminal shunt regulator with zener-like behavior but monolithic IC construction, enabling precise 2.5V reference generation without series pass elements. Its third terminal (adjust pin) allows external trimming of both output voltage and temperature coefficient-unlike standard zeners.
It exhibits 0.2Ω typical dynamic impedance at 1 mA, supports wide operating current (400 μA–10 mA), and achieves ≤6 mV total temperature-induced drift over its rated 0°C to +70°C range when adjusted to 2.490V-critical for high-accuracy ADC/DAC biasing and calibration circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reference Voltage | 2.490 V (trimmed nominal); 2.440–2.540 V (±1% initial tolerance at 1 mA) |
| Temperature Stability | ≤6 mV over 0°C to +70°C (ensures <25 ppm/°C effective TC when trimmed) |
| Dynamic Impedance | 0.2 Ω typical at 1 mA (minimizes load-induced voltage variation and noise coupling) |
| Operating Current Range | 400 μA to 10 mA (enables use with high-impedance bias networks or low-power systems) |
| Initial Tolerance | ±1% (reduces need for post-assembly calibration in mid-precision applications) |
| Package | TO-92 (LP), 3-pin through-hole (supports manual prototyping and legacy PCBs) |
Pinout & Package
LM336BZ-2.5/NOPB uses a TO-92 plastic package (JEDEC TO-226AA, TI package code LP) with 3 leads: Cathode (pin 1), Anode (pin 2), and Adjust (pin 3). The package height is ≤5.34 mm, lead pitch is 2.54 mm, and it is RoHS-compliant with matte tin lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Cathode) | Reference Output Node | Connected to regulated 2.5V node; sinks current from external bias resistor into load |
| Pin 2 (Anode) | Ground Reference | Return path for shunt current; must be tied to system ground or negative rail |
| Pin 3 (Adjust) | Trim Control Terminal | Enables external potentiometer connection to fine-tune breakdown voltage and minimize temperature drift |
Key Features
| Feature | Design Value |
|---|---|
| Low Temperature Coefficient | ≤6 mV drift over 0°C–70°C (achieved via adjustable trim; enables <100 ppm/°C system-level reference stability) |
| Wide Operating Current | 400 μA–10 mA range (supports ultra-low-power sensor interfaces and high-current buffer stages) |
| 0.2Ω Dynamic Impedance | Minimizes AC error under varying load conditions-critical for precision DAC/ADC reference rails |
| Easily Trimmed Output | Third adjust pin allows ±70 mV trim range (compensates for initial tolerance and PCB trace resistance) |
| Shunt Architecture | Operates as two-terminal device with optional third-pin adjustment-simplifies layout vs. series references |
Applications
| Digital Multimeter Reference | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Provides stable 2.5V reference for 16-bit SAR ADC in handheld DMMs powered from 9V battery. IC Role / Device Role / Timing Role: Shunt voltage reference establishing ADC full-scale input range and internal DAC calibration point. Use Value: ±1% initial tolerance and ≤6 mV temp drift ensure <0.1% measurement accuracy across operating temperature without recalibration. | Use Scenario: Supplies excitation and reference voltage for 4–20 mA transmitter with RTD or strain gauge front-end. IC Role / Device Role / Timing Role: Precision 2.5V bias source for instrumentation amplifier gain-setting and ADC reference in loop-powered transmitters. Use Value: 0.2Ω dynamic impedance prevents reference droop during transient load steps from op-amp outputs, preserving linearity. |
| Programmable Power Supply Feedback | Calibration Equipment Reference |
Use Scenario: Sets output voltage in lab-grade adjustable DC power supply using TL431-based feedback loop. IC Role / Device Role / Timing Role: Trimmable 2.5V reference feeding error amplifier comparator in isolated feedback path. Use Value: Adjust pin enables factory calibration to ±0.5 mV, meeting 0.01% output setting accuracy requirement. | Use Scenario: Serves as primary reference in portable calibrator verifying thermocouple simulators and process meters. IC Role / Device Role / Timing Role: Primary shunt reference generating traceable 2.5V node for internal DACs and self-test circuits. Use Value: Low long-term drift (20 ppm/1000 hrs) ensures calibration validity between annual metrology lab recertifications. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL431ACDBVR | Adjustable 2.495V reference; higher 0.2% initial tolerance; requires external resistors for 2.5V setup; SO-8 package | Used in switching PSUs and isolated feedback; not pin-compatible; needs PCB redesign for TO-92 footprint | Select when needing programmable reference or higher current drive (>100 mA), not direct replacement |
| REF3025AIDBZR | 2.5V series reference; 0.2% initial tolerance; 50 ppm/°C max TC; 25 μA quiescent current; SOT-23 package | Lower power, better TC, but requires series dropout headroom; incompatible topology for shunt-based designs | Choose for battery-powered systems where supply headroom >2.7V exists and ultra-low IQ is critical |
Compared with TL431ACDBVR and REF3025AIDBZR, the LM336BZ-2.5/NOPB uniquely combines TO-92 through-hole compatibility, trimmable shunt operation, and sub-10 mV temperature drift in a cost-optimized package-making it irreplaceable in legacy industrial analog boards requiring field-adjustable references without layout changes.
Availability
LM336BZ-2.5/NOPB is available at Aetrix Electronics and suitable for industrial sensor interfaces, portable test equipment, and legacy control system upgrades requiring stable component supply and long-term obsolescence mitigation.
Supply support for LM336BZ-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 leader specializing in analog, embedded processing, and digital signal technologies, with decades of expertise in precision analog ICs and voltage references.
The LM336 family was developed for cost-sensitive, high-reliability analog systems requiring stable shunt references-particularly in industrial instrumentation, test gear, and power management where simplicity, adjustability, and thermal robustness are essential.
FAQ
What is the maximum operating temperature range for LM336BZ-2.5/NOPB?
The LM336BZ-2.5/NOPB is rated for operation from 0°C to +70°C ambient temperature. This is confirmed in the Electrical Characteristics table and Absolute Maximum Ratings section of the SNVS749F datasheet. Exceeding +70°C may cause increased temperature-induced drift beyond the specified ≤6 mV limit and risks long-term reliability degradation. For extended temperature applications, consider the LM136H-2.5/NOPB (−55°C to +125°C).
Can LM336BZ-2.5/NOPB be used as a negative voltage reference?
Yes, the LM336BZ-2.5/NOPB can function as a negative voltage reference by reversing its polarity: connect the anode (pin 2) to the system's most positive rail and the cathode (pin 1) to the −2.5V node. The device operates as a shunt regulator regardless of polarity, provided reverse current remains within 400 μA–10 mA and power dissipation limits are observed. This configuration is explicitly supported in the device description and Figure 23 (Bipolar Output Reference).
How do I trim the LM336BZ-2.5/NOPB for minimum temperature coefficient?
To minimize temperature coefficient, adjust the LM336BZ-2.5/NOPB to exactly 2.490V using a 10kΩ potentiometer between pins 1 and 3, with pin 2 grounded (per Figure 14). Then add two silicon signal diodes (e.g., 1N4148) in series with the potentiometer (Figure 15) to compensate for the LM336's inherent TC slope. Mount diodes thermally adjacent to the LM336BZ-2.5/NOPB on the PCB to ensure matched thermal response.
What is the recommended bias resistor value for LM336BZ-2.5/NOPB in a 5V supply application?
For a 5V supply, select a bias resistor that maintains LM336BZ-2.5/NOPB current between 400 μA and 10 mA. Using Ohm's Law: R = (5V − 2.5V)/I. At 1 mA (mid-range), R = 2.5 kΩ. Standard 2.4 kΩ or 2.7 kΩ 1% resistors are appropriate. Ensure power rating ≥ (2.5V)²/2.4kΩ ≈ 2.6 mW (1/8 W suffices). Avoid values causing current <400 μA (R > 6.25 kΩ) or >10 mA (R < 250 Ω) to stay within spec.
Is LM336BZ-2.5/NOPB RoHS compliant and lead-free?
Yes, LM336BZ-2.5/NOPB is RoHS compliant and lead-free. The "NOPB" suffix denotes "No Lead (Pb)-Free," and the Package Option Addendum confirms RoHS = Yes with "Call TI" for lead finish-indicating matte tin plating per TI's standard Pb-free process. It meets JEDEC J-STD-609 Category 1 requirements and is suitable for environmentally regulated industrial and commercial applications.
LM336BZ-2.5/NOPB 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
LM336BZ-2.5/NOPB FAQ
1.How can I place an order for LM336BZ-2.5/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM336BZ-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 LM336BZ-2.5/NOPB reliable?
The price and inventory of LM336BZ-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 LM336BZ-2.5/NOPB is usually 5 days.
3.What payment methods are accepted for LM336BZ-2.5/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM336BZ-2.5/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM336BZ-2.5/NOPB?
LM336BZ-2.5/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM336BZ-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 LM336BZ-2.5/NOPB?
For technical support, including LM336BZ-2.5/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM336BZ-2.5/NOPB requirements.
6.How does Aetrix verify that LM336BZ-2.5/NOPB is sourced from the original manufacturer or authorized distributors?
All LM336BZ-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 LM336BZ-2.5/NOPB meets industry standards.
7.What is the process for return or replacement of LM336BZ-2.5/NOPB?
All LM336BZ-2.5/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM336BZ-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 LM336BZ-2.5/NOPB part is unused and in its original packaging.
Return procedure for LM336BZ-2.5/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM336BZ-2.5/NOPB Tags
-
TL431AIDBZR
Texas Instruments
-
TL431BQDBZR
Texas Instruments
-
AN431AN-ATRG1
Diodes Incorporated
-
LM4040CYM3-2.5-TR
Microchip Technology
-
LM4040CYM3-4.1-TR
Microchip Technology
-
LM4040EIM3-2.5/NOPB
Texas Instruments
-
AZ431LBNTR-G1
Diodes Incorporated
-
LM4040D20IDBZR
Texas Instruments
-
LM4041DIM3-ADJ/NOPB
Texas Instruments
-
LM4040DIM3X-2.5/NOPB
Texas Instruments
-
LM4040DIM3-2.5/NOPB
Texas Instruments
-
AZ431LANTR-G1
Diodes Incorporated
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
