Overview
The LM336Z-2.5/T7 is a precision 2.5V shunt regulator diode integrated circuit produced by National Semiconductor. This monolithic IC operates as a low-temperature-coefficient 2.5V Zener diode, making it an ideal component for applications requiring stable voltage references. The device features a dynamic impedance of 0.2Ω and is characterized by its wide operating current range of 400 µA to 10 mA. The LM336Z-2.5/T7 is particularly useful in digital voltmeters, power supplies, and operational-amplifier circuitry due to its ability to provide a stable reference voltage from 5V logic supplies.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Reference Voltage (VZ) | 2.44 - 2.54 | V |
| Dynamic Impedance | 0.2 | Ω |
| Operating Current Range | 400 µA to 10 mA | A |
| Temperature Coefficient | ±1.8 to ±6 mV (full range) | mV |
| Operating Temperature Range | 0°C to 70°C | °C |
| Reverse Current | 15 mA | mA |
| Forward Current | 10 mA | mA |
| Storage Temperature | −60°C to +150°C | °C |
| Thermal Resistance (Junction to Ambient) | 165°C/W (TO-92 package) | °C/W |
Key Features
- Precision 2.5V shunt regulator diode with low temperature coefficient.
- Wide operating current range from 400 µA to 10 mA.
- Dynamic impedance of 0.2Ω.
- Easily trimmed for minimum temperature drift using a third terminal.
- Operates as either a positive or negative voltage reference.
- Specified temperature stability over the operating range.
- Fast turn-on time.
Applications
- Digital voltmeters.
- Power supplies.
- Operational-amplifier circuitry.
- Any application requiring a stable 2.5V voltage reference.
- Systems where a reference voltage needs to be derived from 5V logic supplies.
Q & A
- What is the reference voltage of the LM336Z-2.5/T7?
The reference voltage of the LM336Z-2.5/T7 is between 2.44V and 2.54V at 25°C.
- What is the dynamic impedance of the LM336Z-2.5/T7?
The dynamic impedance is 0.2Ω.
- What is the operating current range of the LM336Z-2.5/T7?
The operating current range is from 400 µA to 10 mA.
- What is the temperature coefficient of the LM336Z-2.5/T7?
The temperature coefficient is ±1.8 to ±6 mV over the full operating range.
- What is the operating temperature range of the LM336Z-2.5/T7?
The operating temperature range is from 0°C to 70°C.
- Can the LM336Z-2.5/T7 be used as both a positive and negative voltage reference?
- How can the temperature drift be minimized in the LM336Z-2.5/T7?
The temperature drift can be minimized by using the third terminal to trim the reference voltage and temperature coefficient.
- What are some common applications of the LM336Z-2.5/T7?
- What is the storage temperature range for the LM336Z-2.5/T7?
The storage temperature range is from −60°C to +150°C.
- What is the thermal resistance of the LM336Z-2.5/T7 in the TO-92 package?
The thermal resistance (junction to ambient) is 165°C/W for the TO-92 package.
