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Texas Instruments LM236AH-5.0/NOPB
- Part No.:
- LM236AH-5.0/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-206AB, TO-46-3 Metal Can
- Datasheet:
-
LM236AH-5.0/NOPB.pdf
- Description:
- IC VREF SHUNT 1% TO46-3
- Quantity:
- Payment:
- Shipping:
Inventory:518
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Product details
Overview
LM236AH-5.0/NOPB from Texas Instruments is a precision 5.0V shunt voltage reference diode in a TO-metal-can package, featuring ±1% initial tolerance, 0.6Ω dynamic impedance, wide operating current (600 μA to 10 mA), and specified temperature stability over −25°C to +85°C. It serves as a low-drift, trimmable reference in digital voltmeters, power supply feedback networks, and op amp biasing circuits.
For engineers reviewing the LM236AH-5.0/NOPB datasheet, LM236AH-5.0/NOPB pinout, LM236AH-5.0/NOPB application, or LM236AH-5.0/NOPB equivalent, this page delivers verified electrical specs, thermal limits, trimming methodology, package mechanical data, and real-world use cases - all confirmed against TI's SNVS750D datasheet and official packaging addendum.
Technical Context
The LM236AH-5.0/NOPB operates as a monolithic shunt regulator with zener-like behavior but achieves superior temperature coefficient control via its third terminal, enabling external adjustment of both breakdown voltage and temperature drift. Its 0.6Ω dynamic impedance ensures stable regulation under varying load currents within 600 μA–10 mA.
Rated for −25°C to +85°C operation, it exhibits ≤18 mV total temperature-induced voltage change across its full range and supports trimming to ±1.0V adjustment range while maintaining low noise and fast turn-on response - critical for precision analog measurement and closed-loop feedback systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reference Voltage | 5.00 V nominal at 1 mA; tight 4.95–5.05 V min/max for A-grade devices ensures accurate system-level calibration. |
| Initial Tolerance | ±1% at 25°C; enables single-point calibration in production test without iterative trimming. |
| Dynamic Impedance | 0.6 Ω typical at 1 mA; minimizes output voltage variation under dynamic load changes in feedback paths. |
| Operating Current Range | 600 μA to 10 mA; supports ultra-low-power sensor interfaces and high-current reference buffering without external amplification. |
| Temperature Range | −25°C to +85°C; qualified for industrial ambient environments including motor controls and PLC I/O modules. |
| Temp Stability (0–70°C) | ≤12 mV max deviation; guarantees <0.024%/°C drift for stable ADC reference in unheated enclosures. |
| Max Reverse Current | 15 mA absolute limit; defines safe upper bound for series resistor selection in shunt configuration. |
Pinout & Package
LM236AH-5.0/NOPB uses a 3-pin TO-metal-can (NDV) package with hermetically sealed construction, 2.67 mm maximum height, and leads designed for through-hole mounting per JEDEC TO-46. Thermal resistance θJA = 440°C/W enables reliable operation up to 125°C junction temperature.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Current sink node | Connected to system ground or negative rail; completes shunt path when cathode is biased above reference voltage. |
| Cathode (Pin 2) | Reference output node | Provides regulated 5.0V relative to anode; used directly as reference input to ADCs, comparators, or error amplifiers. |
| Adjust (Pin 3) | Trim control terminal | Enables external potentiometer connection to fine-tune breakdown voltage and minimize temperature coefficient independently. |
Key Features
| Feature | Design Value |
|---|---|
| Adjustable reference range | ±1.0V trim capability allows compensation for initial tolerance and buffer amplifier offset errors without redesign. |
| Low dynamic impedance | 0.6Ω ensures <3 mV output shift across 1–10 mA load variation - critical for high-resolution 16-bit+ data acquisition. |
| Easily trimmed tempco | Third terminal enables diode-compensated circuit (Fig. 15) to reduce temperature drift to <±5 mV over full range. |
| Wide current operation | 600 μA minimum start-up current permits use in battery-powered instruments with microamp sleep modes. |
| Fast turn-on | Sub-microsecond response enables use in transient-sensitive applications like overvoltage crowbar protection (Fig. 17). |
Applications
| Digital Voltmeter Reference | Switching Power Supply Feedback |
|---|---|
|
Use Scenario: High-accuracy benchtop DVM requiring stable 5.0V reference for 20-bit ADC conversion. IC Role / Device Role / Timing Role: Shunt voltage reference providing primary scaling voltage to successive-approximation register (SAR) ADC reference input. Use Value: ±1% initial tolerance and <12 mV temp drift over 0–70°C ensure <0.05% full-scale error without recalibration across lab ambient shifts. |
Use Scenario: Isolated flyback converter using optocoupler feedback with TL431 replacement. IC Role / Device Role / Timing Role: Precision shunt reference generating error signal proportional to output voltage deviation. Use Value: 0.6Ω dynamic impedance maintains tight regulation despite optocoupler CTR variation and transformer leakage effects. |
| Op Amp Bias Network | Calibration Standard Generator |
|
Use Scenario: Rail-to-rail instrumentation amplifier with dual-supply biasing requiring matched positive/negative references. IC Role / Device Role / Timing Role: Dual-configured shunt reference (anode grounded, cathode at +5V; or cathode grounded, anode at –5V) establishing symmetrical bias points. Use Value: Bidirectional operation enables true bipolar reference generation without additional regulators or level-shifting circuitry. |
Use Scenario: Portable field calibrator producing traceable 5.00V output for sensor transmitter loop checks. IC Role / Device Role / Timing Role: Trimmed reference source with external 10k potentiometer (Fig. 14) adjusted to exact 5.000V at 25°C. Use Value: ±1.0V trim range accommodates aging drift and enables end-of-line calibration to NIST-traceable standards. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM336BM-5.0/NOPB | SOIC-8 package; 0–70°C rating; ±1% tolerance; 0.8Ω dynamic impedance. | Suitable for surface-mount PCBs with space constraints; lower thermal mass but reduced industrial temp range. | Select when automated assembly and board density outweigh extended temperature requirements. |
| TL431ACDR | Adjustable 2.495V reference; programmable via resistive divider; 0.22Ω impedance; SOIC-8. | Requires external resistors to set 5.0V; higher accuracy (0.5%) but no direct 5.0V pinout; not trimmable for tempco. | Choose for cost-sensitive designs needing programmability and tighter initial tolerance, accepting added component count. |
Compared with LM336BM-5.0/NOPB, LM236AH-5.0/NOPB offers wider temperature range and lower dynamic impedance in a rugged metal-can package; versus TL431ACDR, it provides fixed 5.0V output with integrated tempco trimming - eliminating resistor matching and layout sensitivity.
Availability
LM236AH-5.0/NOPB is available at Aetrix Electronics and suitable for industrial instrumentation, power supply feedback loops, and precision analog measurement systems requiring stable component supply with long-term calibration integrity.
Supply support for LM236AH-5.0/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 high-reliability components, with decades of expertise in precision voltage references and power management ICs.
The LM236 series belongs to TI's legacy precision shunt reference family, engineered specifically for applications demanding low tempco, easy trimming, and robust performance in industrial and test equipment environments.
FAQ
What is the maximum operating temperature for LM236AH-5.0/NOPB?
The LM236AH-5.0/NOPB is rated for operation from −25°C to +85°C ambient temperature. Its junction temperature limit is 125°C, and thermal resistance θJA is 440°C/W in the TO-metal-can package. Derating is required above 85°C ambient to maintain safe junction temperatures - always verify with actual board layout and airflow conditions before deployment.
How do I connect LM236AH-5.0/NOPB as a positive 5.0V reference?
To configure LM236AH-5.0/NOPB as a positive 5.0V reference, connect Pin 1 (Anode) to ground, apply input voltage >5.5V through a current-limiting resistor to Pin 2 (Cathode), and use Pin 2 as the 5.0V output. Pin 3 (Adjust) may be left open or connected per trimming requirements. This setup leverages its inherent shunt architecture for stable regulation without additional active components.
Can LM236AH-5.0/NOPB be used as a negative reference?
Yes, LM236AH-5.0/NOPB can function as a negative reference by grounding Pin 2 (Cathode) and applying a negative voltage to Pin 1 (Anode) via a current-limiting resistor. The regulated −5.0V appears at Pin 1 relative to ground. This bidirectional capability eliminates need for separate negative-reference ICs in dual-rail systems, provided the absolute maximum reverse current (15 mA) is respected.
What is the purpose of the Adjust pin (Pin 3) on LM236AH-5.0/NOPB?
Pin 3 (Adjust) enables external trimming of both breakdown voltage and temperature coefficient. Connecting a 10k potentiometer between Pins 1 and 2 with wiper to Pin 3 allows ±1.0V adjustment of output voltage. Adding four series diodes (e.g., 1N4148) between wiper and Pin 1 minimizes tempco drift - a method validated in TI's Figure 15 and confirmed in SNVS750D.
Is LM236AH-5.0/NOPB RoHS compliant?
Yes, LM236AH-5.0/NOPB is RoHS compliant, as confirmed in TI's Package Option Addendum: "RoHS: Yes" for orderable part number LM236AH-5.0/NOPB. It contains no lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls (PBB), or polybrominated diphenyl ethers (PBDE), meeting EU Directive 2011/65/EU requirements for hazardous substances.
LM236AH-5.0/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- TO-206AB, TO-46-3 Metal Can
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Reference Type:
- Shunt
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 10 mA
- Tolerance:
- ±1%
- Temperature Coefficient:
- -
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- -
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 600 µA
- Operating Temperature:
- -25°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-46-3
LM236AH-5.0/NOPB FAQ
1.How can I place an order for LM236AH-5.0/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM236AH-5.0/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 LM236AH-5.0/NOPB reliable?
The price and inventory of LM236AH-5.0/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM236AH-5.0/NOPB is usually 5 days.
3.What payment methods are accepted for LM236AH-5.0/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM236AH-5.0/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM236AH-5.0/NOPB?
LM236AH-5.0/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM236AH-5.0/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 LM236AH-5.0/NOPB?
For technical support, including LM236AH-5.0/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM236AH-5.0/NOPB requirements.
6.How does Aetrix verify that LM236AH-5.0/NOPB is sourced from the original manufacturer or authorized distributors?
All LM236AH-5.0/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 LM236AH-5.0/NOPB meets industry standards.
7.What is the process for return or replacement of LM236AH-5.0/NOPB?
All LM236AH-5.0/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM236AH-5.0/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 LM236AH-5.0/NOPB part is unused and in its original packaging.
Return procedure for LM236AH-5.0/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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