Overview
The LM285D-1.2R2, produced by onsemi, is a micropower two-terminal bandgap voltage regulator diode. It is part of the LM285/LM385 series, designed to operate over a wide current range of 10 μA to 20 mA. This device is known for its exceptionally low dynamic impedance, low noise, and stable operation over time and temperature. The LM285D-1.2R2 is specifically rated for an operating temperature range of -40°C to +85°C and provides a stable reference voltage of 1.235 V.
Key Specifications
| Characteristic | Symbol | Unit | Min | Max | |
|---|---|---|---|---|---|
| Reverse Breakdown Voltage | V(BR)R | V | 1.223 | 1.235 | 1.247 |
| Minimum Operating Current | IRmin | μA | 8.0 | - | 20 |
| Reverse Dynamic Impedance | Z | Ω | - | 0.6 | - |
| Average Temperature Coefficient | ΔV(BR)/ΔT | ppm/°C | - | 80 | - |
| Wideband Noise (RMS) | n | μV | - | 120 | - |
| Long Term Stability | S | ppm/kHR | - | 20 | - |
| Operating Ambient Temperature Range | TA | °C | -40 | - | 85 |
| Operating Junction Temperature | TJ | °C | - | - | 150 |
| Storage Temperature Range | Tstg | °C | -65 | - | 150 |
| Package | - | - | SOIC-8 | - | - |
Key Features
- Operating current from 10 μA to 20 mA
- 1.0%, 1.5%, 2.0%, and 3.0% initial tolerance grades
- Low temperature coefficient
- Low dynamic impedance (approximately 0.6 Ω at 100 μA)
- Surface mount package available
- Pb-free and RoHS compliant
Applications
The LM285D-1.2R2 is ideal for use in micropower circuitry, such as portable instrumentation, regulators, and other analog circuitry where extended battery life is required. Its stable operation over a wide temperature range and low noise characteristics make it suitable for applications with varying supply voltages.
Q & A
- What is the operating current range of the LM285D-1.2R2? The operating current range is from 10 μA to 20 mA.
- What are the available voltage references for the LM285 series? The LM285 series is available in two voltage versions: 1.235 V and 2.500 V.
- What is the temperature range for the LM285D-1.2R2? The operating ambient temperature range is -40°C to +85°C.
- Is the LM285D-1.2R2 Pb-free and RoHS compliant? Yes, it is Pb-free and RoHS compliant.
- What is the typical dynamic impedance of the LM285D-1.2R2? The typical dynamic impedance is approximately 0.6 Ω at 100 μA.
- What are the common applications for the LM285D-1.2R2? It is commonly used in portable instrumentation, regulators, and other analog circuitry where extended battery life is required.
- What is the storage temperature range for the LM285D-1.2R2? The storage temperature range is -65°C to +150°C.
- What package types are available for the LM285D-1.2R2? It is available in SOIC-8 packages.
- How does the LM285D-1.2R2 handle noise? It has low wideband noise (RMS) of approximately 120 μV.
- What is the long-term stability of the LM285D-1.2R2? The long-term stability is approximately 20 ppm/kHR.
