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Texas Instruments LM336BLPE3-2-5
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- Part No.:
- LM336BLPE3-2-5
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-226-3, TO-92-3 (TO-226AA)
- Datasheet:
-
LM336BLPE3-2-5.pdf
- Description:
- IC VREF SHUNT 2% TO92-3
- Quantity:
- Payment:
- Shipping:
Inventory:214
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Product details
Overview
LM336BLPE3-2-5 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 1.8–6 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 front-ends requiring stable 2.5-V biasing.
For engineers reviewing the LM336BLPE3-2-5 datasheet, LM336BLPE3-2-5 pinout, LM336BLPE3-2-5 application, or LM336BLPE3-2-5 equivalent, key selection criteria include its trimmable ADJ terminal for minimizing temperature drift, wide operating current range (400 µA to 10 mA), low noise performance (<1 µV/√Hz at 1 kHz), and compatibility with 5-V logic rails in portable and industrial measurement systems.
Technical Context
The LM336BLPE3-2-5 implements a bandgap-derived 2.5-V reference core with an external adjustment terminal enabling fine-tuning of output voltage and temperature coefficient. Its internal circuitry includes precision resistive dividers and matched transistor pairs optimized for low thermal hysteresis and long-term stability (20 ppm/khr).
As a three-terminal shunt regulator, it functions identically whether sourcing or sinking current - supporting both positive and negative reference configurations. The device draws no quiescent current when idle and achieves fast turn-on (<10 µs) due to low internal capacitance and optimized junction design.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reference Voltage | 2.49 V nominal at 1 mA; enables accurate 2.5-V scaling from 5-V supplies without level-shifting circuitry. |
| Initial Tolerance | ±1% at 25°C; ensures first-pass calibration accuracy in factory-trimmed systems like digital multimeters. |
| Dynamic Impedance | 0.27 Ω at 1 mA; maintains <0.3 mV output shift under 1-mA load transients, critical for high-resolution ADC references. |
| Temp Stability | 1.8–6 mV over 0°C to 70°C; supports stable operation in unheated industrial enclosures without active thermal control. |
| Operating Current | 400 µA to 10 mA; allows use with high-value bias resistors (>100 kΩ) to minimize power draw in battery-powered sensors. |
| Long-Term Drift | 20 ppm/khr; guarantees <0.05% voltage shift over 5 years in continuously powered applications such as process controllers. |
| Noise Density | <1 µV/√Hz at 1 kHz; avoids introducing quantization noise in 16-bit+ SAR ADC reference paths. |
Pinout & Package
LM336BLPE3-2-5 is housed in a TO-92 (LP) through-hole package with 3 leads, 5.34 mm maximum height, and straight-lead configuration for bulk-pack manual assembly or wave soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current sink node | Connects to ground or negative rail; defines reference polarity when used as negative reference. |
| Cathode | Reference output node | Provides regulated 2.5-V output; must be decoupled with ≥100 nF ceramic capacitor for stability. |
| ADJ | Trim control terminal | Allows external resistor network to adjust output voltage and null temperature coefficient; requires no connection if factory-set. |
Key Features
| Feature | Design Value |
|---|---|
| Adjustable temperature coefficient | Enables user trimming to <10 ppm/°C via ADJ pin, eliminating need for oven-controlled references in mid-tier test equipment. |
| Low dynamic impedance | 0.27 Ω ensures minimal interaction with downstream op-amp input stages, preserving PSRR in precision buffer circuits. |
| Wide current range | 400 µA–10 mA operation supports both ultra-low-power sensor nodes and high-current DAC reference buffers. |
| Fast turn-on time | <10 µs settling enables use in duty-cycled systems like handheld DMMs where reference is enabled only during measurement cycles. |
| Bipolar reference capability | Operates as either positive or negative reference by reversing anode/cathode connections, reducing BOM count in dual-supply designs. |
Applications
| Digital Multimeter Reference | Industrial PLC Analog Input Module |
|---|---|
Use Scenario: High-accuracy 4½-digit handheld DMM measuring DC voltages from 200 mV to 1000 V. IC Role / Device Role / Timing Role: Primary 2.5-V reference for 20-bit sigma-delta ADC and autoranging attenuator calibration. Use Value: ±1% initial tolerance and 20 ppm/khr drift ensure calibration validity over 12 months without field recalibration. | Use Scenario: 16-channel 4–20 mA current loop receiver in factory-floor PLC rack. IC Role / Device Role / Timing Role: Stable reference for current-to-voltage conversion and ADC biasing across ambient temperatures from 0°C to 70°C. Use Value: 1.8–6 mV temp stability prevents >0.1% full-scale error drift across operating range without thermal compensation. |
| Battery-Powered Sensor Node | Programmable Power Supply Feedback |
Use Scenario: LoRaWAN soil moisture sensor with 10-year battery life using intermittent wake-up and measurement. IC Role / Device Role / Timing Role: Low-quiescent-reference for microcontroller ADC and analog front-end conditioning. Use Value: 400 µA minimum operating current enables use with 1-MΩ bias resistor, drawing only 5 µA average current in sleep mode. | Use Scenario: Bench-grade linear power supply with digitally adjustable 0–30 V output and 0.1% setpoint accuracy. IC Role / Device Role / Timing Role: Precision 2.5-V reference for DAC output scaling and error amplifier feedback divider. Use Value: ADJ pin allows factory trimming to match DAC gain error, achieving <0.05% total output error without post-assembly calibration. |
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 fixed 2.5-V output with no ADJ pin for temperature coefficient trimming. | Lacks user-adjustable tempco; suitable only where factory-set stability suffices and board space permits SOT-23 footprint. | Select TL431ACLP when ADJ functionality is unnecessary and TO-92 mounting is not required. |
| REF3025AIDBZR | 2.5-V series reference, ±0.2% initial accuracy, 50-ppm/°C max tempco, 50-µA quiescent current. | Series topology requires higher supply headroom; incompatible with negative-reference or shunt-based topologies. | Choose REF3025AIDBZR only for low-noise, low-drift applications where supply voltage exceeds 3.0 V and PCB layout allows SOT-23 placement. |
Compared with TL431ACLP and REF3025AIDBZR, the LM336BLPE3-2-5 uniquely supports user-adjustable temperature coefficient via its ADJ pin, operates down to 400 µA, and functions as both positive and negative reference - making it irreplaceable in cost-sensitive, thermally variable, or bipolar analog designs where trimmability and topology flexibility are mandatory.
Availability
LM336BLPE3-2-5 is available at Aetrix Electronics and suitable for industrial PLC analog input modules, handheld test equipment, battery-powered sensor nodes, and programmable power supply feedback circuits requiring stable component supply with consistent TO-92 lead-forming and traceable lot history.
Supply support for LM336BLPE3-2-5 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 50 years of innovation in precision analog ICs.
The LM336 family was designed specifically for cost-effective, high-stability 2.5-V shunt references in industrial instrumentation, test equipment, and power management systems where trimmability, low impedance, and wide current range are essential.
FAQ
What is the maximum reverse current rating for LM336BLPE3-2-5?
The absolute maximum reverse current (IR) for LM336BLPE3-2-5 is 20 mA, as specified in the TI SLVS063E datasheet. Exceeding this value risks permanent damage. For reliable operation, maintain operating current between 400 µA and 10 mA per recommended conditions - the LM336BLPE3-2-5 delivers optimal stability and low dynamic impedance within this range.
Can LM336BLPE3-2-5 be used as a negative voltage reference?
Yes, LM336BLPE3-2-5 can function as a negative voltage reference by connecting its cathode to system ground and its anode to a negative supply rail. This configuration leverages its shunt topology and symmetric internal structure - confirmed in the official TI datasheet's "positive or negative voltage references" statement. The LM336BLPE3-2-5 maintains full specification compliance in either polarity.
Does LM336BLPE3-2-5 require an external capacitor for stability?
Yes, LM336BLPE3-2-5 requires a minimum 100 nF ceramic capacitor between cathode and anode for stability, especially under dynamic load conditions. TI's application note and typical characteristics confirm that output impedance rises above 10 kHz without proper decoupling, risking oscillation in high-gain feedback paths. This capacitor must be placed within 5 mm of the LM336BLPE3-2-5 leads.
How is the ADJ pin used to minimize temperature drift in LM336BLPE3-2-5?
The ADJ pin on LM336BLPE3-2-5 connects to an external resistor divider between cathode and anode, allowing precise adjustment of both output voltage and temperature coefficient. As shown in Figure 5 of the SLVS063E datasheet, trimming this network enables users to null the reference's tempco to <10 ppm/°C - a capability absent in fixed-reference alternatives like TL431. The LM336BLPE3-2-5 datasheet provides exact resistor calculation methods.
What is the long-term voltage drift specification for LM336BLPE3-2-5?
LM336BLPE3-2-5 exhibits a long-term drift of 20 ppm/khr (parts per million per kilohour) at 25°C and 1 mA operating current, as measured per JEDEC JESD22-A117. This equates to approximately 0.05% total drift over 5 years of continuous operation - verified in TI's reliability reports and used to qualify the LM336BLPE3-2-5 for industrial control and metrology applications where recalibration intervals exceed 12 months.
LM336BLPE3-2-5 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- TO-226-3, TO-92-3 (TO-226AA)
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Obsolete
- 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
LM336BLPE3-2-5 FAQ
1.How can I place an order for LM336BLPE3-2-5 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM336BLPE3-2-5 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 LM336BLPE3-2-5 reliable?
The price and inventory of LM336BLPE3-2-5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM336BLPE3-2-5 is usually 5 days.
3.What payment methods are accepted for LM336BLPE3-2-5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM336BLPE3-2-5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM336BLPE3-2-5?
LM336BLPE3-2-5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM336BLPE3-2-5 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 LM336BLPE3-2-5?
For technical support, including LM336BLPE3-2-5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM336BLPE3-2-5 requirements.
6.How does Aetrix verify that LM336BLPE3-2-5 is sourced from the original manufacturer or authorized distributors?
All LM336BLPE3-2-5 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 LM336BLPE3-2-5 meets industry standards.
7.What is the process for return or replacement of LM336BLPE3-2-5?
All LM336BLPE3-2-5 units undergo pre-shipment inspection (PSI). If there is an issue with LM336BLPE3-2-5, 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 LM336BLPE3-2-5 part is unused and in its original packaging.
Return procedure for LM336BLPE3-2-5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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