LM285D-1.2RG

The LM285 is a micropower bandgap voltage reference fabricated using bipolar process technology. It delivers a stable voltage reference over an operating current range of 10µA to 20mA, featuring very low dynamic impedance and excellent temperature stability. An on-chip trimming mechanism ensures minimal output voltage tolerance. Since the bandgap reference components in the LM285 consist solely of transistors and resistors, the circuit exhibits very low noise and excellent long-term stability. The LM285 has been carefully designed to address potential issues across various load conditions, making it highly adaptable to external loads and suitable for the vast majority of voltage reference applications. The wide dynamic operating range of the LM285 enables outstanding regulation performance even under significant supply voltage variations. While providing a precision reference, the LM285 requires only minimal quiescent current, making it particularly well-suited for micropower circuits — ideal as a voltage reference in battery-powered portable instruments, regulated power supplies, and general-purpose analog circuits. The LM285 is available in two fixed voltage versions: 1.2V (LM285-1.2) and 2.5V (LM285-2.5). Standard package options include TO-92, SOT-23, SOP-8, and MSOP-8.

Applications

• Wide input range reference, micro-power reference (9V supply and 1.5V), 5V regulator and 10V reference, 1µA~1mA precision current source, micro-power thermocouple cold junction compensator, centigrade thermometer

Key features

• ±4mV (±0.3%) maximum initial tolerance (Grade A)
• Operating current: 10µA~20mA
• 0.6Ω maximum dynamic impedance (Grade A)
• Low temperature coefficient