LM2590HV is a SIMPLE SWITCHER® Power Converter that operates at 150 kHz and can output 1A of current. It has excellent line and load regulation performance. This series of regulators has additional supervisory and performance features, requires the minimum number of external components, is easy to use, and includes internal frequency compensation, improved line and load specifications, a fixed-frequency oscillator, Shutdown/Soft-start, output error flag, and flag delay.
The LM2590HV series are monolithic integrated circuits that provide all active functions for a step‑down (buck) switching regulator, capable of driving a 1 A load with excellent line and load regulation. Available in fixed 3.3 V, 5 V, and adjustable output versions, the devices operate at a 150 kHz switching frequency, allowing smaller filter components.
Key features include a fixed‑frequency internal oscillator, shutdown/soft‑start control, output error flag, low‑power standby mode (≈90 µA), and protection mechanisms such as two‑stage current limit and thermal shutdown. The regulator is offered in 7‑lead TO‑220 and TO‑263 surface‑mount packages and supports input voltages up to 60 V.
| Switching frequency | 150 kHz |
|---|---|
| Maximum output current | 1 A |
| Input voltage range | up to 60 V |
| Package options | 7‑lead TO‑220 and TO‑263 (surface mount) |
| Efficiency (Vin=12 V, Iout=1 A) | 77 % |
| Standby current | ≈90 µA |
| Shutdown threshold voltage | 1.3 V |
The LM2590HV uses a fixed‑frequency internal oscillator that operates at 150 kHz.
The device is rated for an input voltage up to 60 V (63 V absolute maximum).
It is offered in a 7‑lead TO‑220 package and a 7‑lead TO‑263 surface‑mount package.
Yes, the regulator includes shutdown and soft‑start control circuitry.