Overview
The LM385M3-1.2 is a micropower 2-terminal band-gap voltage regulator diode produced by Texas Instruments. This device is part of the LM385 series, known for its low power consumption and high stability. It operates over a wide current range of 10μA to 20mA, making it versatile for various applications. The LM385M3-1.2 is particularly useful in micropower circuitry due to its extremely low power drain, which allows for battery life approaching shelf life.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Output Voltage | 1.235 | V |
| Output Voltage Tolerance | ±1% and ±2% | % |
| Operating Current Range | 10μA to 20mA | A |
| Dynamic Impedance | 1Ω | Ω |
| Temperature Coefficient | 150 ppm/°C | ppm/°C |
| Noise (10Hz to 10kHz) | 60 μVrms | μVrms |
| Operating Temperature Range | 0°C to 70°C | °C |
| Package Type | SOT-23-3 | |
| Mounting Type | Surface Mount |
Key Features
- Low power consumption with an operating current range of 10μA to 20mA.
- Exceptionally low dynamic impedance of 1Ω.
- Good temperature stability with a temperature coefficient of 150 ppm/°C.
- Tight voltage tolerance with ±1% and ±2% initial tolerance.
- Low noise, with a wideband noise of 60 μVrms from 10Hz to 10kHz.
- High long-term stability.
- Available in SOT-23, TO-92, and SOIC packages.
- Capacitive loading tolerance, making it easy to use in various reference applications.
Applications
The LM385M3-1.2 is suitable for a variety of applications, including:
- Micropower circuitry where low power consumption is critical.
- Portable meters and regulators.
- General-purpose analog circuitry.
- Systems requiring stable voltage references with minimal power drain.
Q & A
- What is the output voltage of the LM385M3-1.2?
The output voltage of the LM385M3-1.2 is 1.235V.
- What is the operating current range of the LM385M3-1.2?
The operating current range is from 10μA to 20mA.
- What is the dynamic impedance of the LM385M3-1.2?
The dynamic impedance is 1Ω.
- What is the temperature coefficient of the LM385M3-1.2?
The temperature coefficient is 150 ppm/°C.
- What is the noise level of the LM385M3-1.2 from 10Hz to 10kHz?
The noise level is 60 μVrms from 10Hz to 10kHz.
- What are the available package types for the LM385M3-1.2?
The device is available in SOT-23, TO-92, and SOIC packages.
- What is the operating temperature range of the LM385M3-1.2?
The operating temperature range is from 0°C to 70°C.
- Is the LM385M3-1.2 suitable for capacitive loading?
Yes, it is exceptionally tolerant of capacitive loading.
- What are some common applications of the LM385M3-1.2?
Common applications include micropower circuitry, portable meters, regulators, and general-purpose analog circuitry.
- Does the LM385M3-1.2 have built-in ESD protection?
The device has limited built-in ESD protection and requires careful handling to prevent electrostatic damage.
