STMicroelectronics Debuts L6590 Power Supply Chip

STMicroelectronics (Lexington, MA) announced the L6590, a new power supply chip that integrates a 700V power MOSFET switch with all of the control circuits needed to build a converter using flyback, boost or forward topologies. The device operates over the universal input voltage range of 85 to 265Vac and also with dc inputs.

The L6590 features an on-chip 65kHz oscillator. It has standby operating mode, a brown-out function, and an on-chip error amplifier. Typical applications of the L6590 include wall plug power supplies, ac/dc adapters, auxiliary supplies for CRTs, LCD monitors, desktop PCs and servers, fax machines and laser printers.

Three package versions are available. The L6590D is assembled in a SO-16W and provides both the brown-out and error amplifier connections. Types L6590N and L6590AN are both assembled in 8-lead DIP packages and exclude either the error amplifier (L6590AN) or the brown-out function (L6590N). The L6590 is available at $0.75 in 25,000 quantities.