LM2585 SIMPLE SWITCHER® 3A Flyback Regulator is a monolithic integrated circuit specifically designed for flyback, step-up (boost), and forward converter applications. It requires a minimum number of external components, these regulators are cost effective, and simple to use.
The LM2585 series are monolithic integrated circuits designed for flyback, boost and forward converter applications. The device is offered in four fixed output versions (3.3 V, 5.0 V, 12 V) and an adjustable version, and is suited for low‑component count designs.
Key features include a 3 A NPN output switch rated for 65 V, a fixed 100 kHz internal oscillator, soft‑start, current‑mode control, and a guaranteed output voltage tolerance of +4 % over line and load conditions. Typical applications are flyback regulators, multiple‑output regulators, simple boost regulators and forward converters.
| Output Switch Voltage | 65 V |
|---|---|
| Switching Frequency | 100 kHz |
| Input Voltage Range | 4 V to 40 V |
| Output Voltage Tolerance | +4 % max |
The LM2585 operates at a fixed 100 kHz switching frequency.
The internal NPN power switch can handle up to 3 A while standing off 65 V.
The regulator guarantees an output voltage tolerance of +4 % over line and load conditions.
It supports a wide input voltage range from 4 V to 40 V.