This file introduces the characteristics of the LM285/LM385 series micropower two-terminal bandgap voltage regulator diodes. This series products are packaged in a low-cost TO-226 plastic case and are available with an operating current range of 10μA to 20mA, featuring exceptionally low dynamic impedance, low noise and stable operation over time and temperature. Tight voltage tolerances are achieved by on-chip trimming. The large dynamic operating range enables these devices to be used in applications with widely varying supplies with excellent regulation. Extremely low operating current make these devices ideal for micropower circuitry like portable instrumentation, regulators and other analog circuitry where extended battery life is required.
The document describes the LM285 and LM385B series as two-terminal bandgap voltage regulator diodes designed for micropower circuitry. These devices operate over a wide current range of 10 µA to 20 mA, featuring exceptionally low dynamic impedance, low noise, and stable operation over time and temperature.
The datasheet provides maximum ratings, detailed electrical characteristics including reverse breakdown voltage and temperature coefficients, typical performance curves for various parameters, and comprehensive ordering information for different packages such as TO-92 and SOIC-8.
| Operating Current Range | 10 µA to 20 mA |
|---|---|
| Reverse Breakdown Voltage (Typical) | 1.235 V / 2.500 V |
| Operating Ambient Temperature Range (LM285) | -40°C to +85°C |
| Operating Ambient Temperature Range (LM385) | 0°C to +70°C |
| Reverse Dynamic Impedance (Typical) | 0.6 Ω |
The devices are designed to operate over a wide current range of 10 µA to 20 mA.
The series is available in two voltage versions: 1.235 V and 2.500 V.
Yes, Pb-Free Packages are available for the devices.