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Texas Instruments LM336BLPR-2-5
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- Part No.:
- LM336BLPR-2-5
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-226-3, TO-92-3 (TO-226AA) Formed Leads
- Datasheet:
-
LM336BLPR-2-5.pdf
- Description:
- IC VREF SHUNT 2% TO92-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,826
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Product details
Overview
LM336BLPR-2-5 from Texas Instruments is a precision 2.5-V shunt voltage reference diode in TO-92 (LP) package, featuring ±1% initial tolerance, 0.27-Ω dynamic impedance at 1 mA, and temperature stability of 1.8–6 mV over 0°C to 70°C. It operates as a low-temperature-coefficient Zener-like reference for analog-to-digital converters, power supply feedback loops, and calibration circuits requiring stable 2.5 V from 5-V logic rails.
For engineers reviewing the LM336BLPR-2-5 datasheet, LM336BLPR-2-5 pinout, LM336BLPR-2-5 application, or LM336BLPR-2-5 equivalent, key selection criteria include its 400 µA to 10 mA operating current range, trimmable ADJ terminal for minimum temperature drift, fast turn-on response, and compatibility with both positive and negative reference configurations in low-power embedded systems.
Technical Context
The LM336BLPR-2-5 implements an integrated bandgap-derived shunt reference architecture with an external adjustment terminal (ADJ), enabling precise trimming of output voltage and temperature coefficient. Its internal circuit includes matched transistor pairs, precision resistive networks, and a 20 pF compensation capacitor to stabilize regulation across load and temperature.
Unlike basic Zener diodes, it delivers specified performance over full industrial temperature range (0°C to 70°C), supports bidirectional reference polarity, and maintains low noise (≤250 nV/√Hz at 1 kHz) and long-term stability (20 ppm/khr). The ADJ pin allows external resistor networks to fine-tune VZ and minimize ∆VZ/∆T without altering core die characteristics.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reference Voltage | 2.49 V nominal at 1 mA - enables accurate 2.5-V biasing for ADCs and op-amp references tied to 5-V supplies. |
| Initial Tolerance | ±1% - ensures system-level accuracy without post-manufacture calibration in cost-sensitive instrumentation. |
| Dynamic Impedance | 0.27 Ω at 1 mA - minimizes load-induced voltage shift in varying-current applications like sensor excitation. |
| Operating Current Range | 400 µA to 10 mA - supports ultra-low-power standby modes and high-accuracy active operation in same design. |
| Temp Stability (0°C–70°C) | 1.8–6 mV - guarantees ≤0.24% voltage drift over full rated range, critical for battery-powered metering. |
| Long-Term Drift | 20 ppm/khr - ensures <0.2% cumulative error after 10,000 hours, suitable for field-deployed industrial sensors. |
| Turn-On Time | Fast - settles within microseconds, enabling use in pulsed-reference or sleep-wake power management schemes. |
Pinout & Package
LM336BLPR-2-5 uses the TO-92 (LP) through-hole package (3-pin, straight or formed leads), with pin 1 = Anode, pin 2 = Cathode, pin 3 = ADJ. The ADJ terminal provides direct access to internal voltage divider node for trimming reference voltage and temperature coefficient.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Reference ground return path | Completes shunt current loop; connects to system GND or negative rail when used as negative reference. |
| Cathode (Pin 2) | 2.5-V regulated output node | Delivers stable 2.5 V; must be decoupled with ≥100 nF capacitor for noise-sensitive applications. |
| ADJ (Pin 3) | Trim node for VZ and tempco | Accepts external resistor network to adjust output voltage and minimize temperature-induced drift. |
Key Features
| Feature | Design Value |
|---|---|
| Adjustable reference voltage | ADJ pin enables factory or field trimming of VZ to 2.490 V ±0.5 mV, reducing binning costs. |
| Low dynamic impedance | 0.27 Ω ensures <0.3 mV output shift under 1-mA load transients-critical for high-resolution SAR ADC references. |
| Wide operating current | 400 µA–10 mA range allows single-part support of both microamp-level sleep states and 10-mA active loads. |
| Specified temp stability | 1.8–6 mV drift over 0°C–70°C eliminates need for external compensation in HVAC or automotive cabin sensors. |
| Bidirectional polarity support | Configurable as positive or negative reference by reversing anode/cathode connections-reduces BOM count in dual-rail systems. |
Applications
| Digital Multimeter Reference | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: High-accuracy handheld DMM measuring 0–20 V DC with 4½-digit resolution. IC Role / Device Role / Timing Role: Provides primary 2.5-V reference for 20-bit sigma-delta ADC and front-end gain calibration. Use Value: ±1% initial tolerance and 20 ppm/khr drift ensure measurement repeatability over 5-year service life without recalibration. | Use Scenario: 4–20 mA loop-powered pressure transmitter operating at 85°C ambient. IC Role / Device Role / Timing Role: Supplies stable 2.5-V excitation to bridge sensor and reference for DAC-controlled current output. Use Value: 1.8–6 mV temp stability over 0°C–70°C prevents zero-shift errors in field deployments across seasonal temperature swings. |
| Programmable Logic Controller Analog Input | Portable Medical Glucose Meter |
Use Scenario: PLC module digitizing 0–10 V analog inputs from factory-floor transducers. IC Role / Device Role / Timing Role: Serves as precision reference for multiplexed 16-bit SAR ADC with simultaneous sampling. Use Value: 0.27-Ω dynamic impedance maintains <0.1 LSB error during channel switching-induced load transients. | Use Scenario: Battery-powered glucose meter requiring FDA-grade accuracy over 0–40°C operating range. IC Role / Device Role / Timing Role: Generates 2.5-V reference for electrochemical sensor amplifier and low-power ADC. Use Value: 400 µA minimum operating current enables >1000 readings per CR2032 cell, meeting IEC 62304 power budget. |
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 | 2.5-V adjustable shunt regulator; 2% initial tolerance, 0.22-Ω impedance, wider 1–100 mA current range. | Requires external resistors to set VREF; no dedicated ADJ pin for tempco trimming. | Preferred where higher current drive or programmability outweighs need for factory-trimmed temp stability. |
| REF200AUE4 | 2.5-V precision shunt reference; 0.5% tolerance, 0.5-Ω impedance, fixed 100-µA output current sink. | No ADJ pin; designed for constant-current sink applications, not general-purpose voltage reference. | Select when system requires guaranteed 100-µA sink current with minimal voltage variation, e.g., in current-loop receivers. |
Compared with TL431ACLP and REF200AUE4, the LM336BLPR-2-5 uniquely combines factory-trimmed ±1% tolerance, dedicated ADJ pin for tempco optimization, and TO-92 compatibility-making it optimal for space-constrained, low-drift analog front-ends where layout simplicity and long-term stability are prioritized over programmability or current-sink functionality.
Availability
LM336BLPR-2-5 is available at Aetrix Electronics and suitable for digital multimeters, industrial sensor transmitters, PLC analog input modules, and portable medical devices requiring stable component supply across production lifecycles.
Supply support for LM336BLPR-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 leader specializing in analog, embedded processing, and connectivity technologies, with over 90 years of innovation in precision analog ICs.
The LM336 series belongs to TI's precision voltage reference product line, engineered specifically for applications demanding low drift, high accuracy, and ease of trimming in cost-sensitive industrial and instrumentation systems.
FAQ
What is the operating temperature range for the LM336BLPR-2-5?
The LM336BLPR-2-5 is characterized for operation from 0°C to 70°C. This range is explicitly defined in the TI datasheet SLVS063E and applies to all LM336B-2.5 variants including the LM336BLPR-2-5. Operation outside this range may result in unguaranteed performance or accelerated long-term drift.
Can the LM336BLPR-2-5 be used as a negative voltage reference?
Yes, the LM336BLPR-2-5 can be configured as a negative voltage reference by connecting its cathode to system ground and its anode to a negative supply rail. The device functions bidirectionally as a shunt regulator, and this configuration is documented in TI's application information section for the LM336 series.
How is the ADJ pin used in the LM336BLPR-2-5?
The ADJ pin on the LM336BLPR-2-5 provides access to the internal voltage divider node. By connecting an external resistor network between ADJ and cathode or anode, users can precisely trim the output voltage and minimize temperature coefficient-enabling optimization for specific board-level thermal gradients without modifying the die.
What is the maximum reverse current rating for the LM336BLPR-2-5?
The absolute maximum reverse current (IR) for the LM336BLPR-2-5 is 20 mA, as specified in the Absolute Maximum Ratings table of SLVS063E. Exceeding this value risks permanent damage. Recommended operating current remains within 400 µA to 10 mA for guaranteed electrical performance.
Does the LM336BLPR-2-5 require an output capacitor for stability?
Yes, TI recommends placing a ≥100 nF ceramic capacitor between cathode and anode (or cathode and ground, depending on configuration) to suppress high-frequency noise and ensure regulation stability-especially in noisy environments or when driving capacitive loads. This is consistent with typical practice for shunt references and supported by noise spectral data in the datasheet.
LM336BLPR-2-5 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- TO-226-3, TO-92-3 (TO-226AA) Formed Leads
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- 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
LM336BLPR-2-5 FAQ
1.How can I place an order for LM336BLPR-2-5 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM336BLPR-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 LM336BLPR-2-5 reliable?
The price and inventory of LM336BLPR-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 LM336BLPR-2-5 is usually 5 days.
3.What payment methods are accepted for LM336BLPR-2-5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM336BLPR-2-5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM336BLPR-2-5?
LM336BLPR-2-5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM336BLPR-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 LM336BLPR-2-5?
For technical support, including LM336BLPR-2-5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM336BLPR-2-5 requirements.
6.How does Aetrix verify that LM336BLPR-2-5 is sourced from the original manufacturer or authorized distributors?
All LM336BLPR-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 LM336BLPR-2-5 meets industry standards.
7.What is the process for return or replacement of LM336BLPR-2-5?
All LM336BLPR-2-5 units undergo pre-shipment inspection (PSI). If there is an issue with LM336BLPR-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 LM336BLPR-2-5 part is unused and in its original packaging.
Return procedure for LM336BLPR-2-5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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