GENERAL DESCRIPTION

The ML4880 Portable PC and PCMCIA Power Controller is a complete solution for DC/DC power conversion for portable computing systems with single or multiple PCMCIA slots.

FEATURES

■ Regulation to ±3 maximum: provides 2 PCMCIA switch matrix margin

■ Two synchronous buck controllers for 3.3/3V, 5V generation, and a flyback for high current, 12V generation from 5.5V to 18V input

■ Regulator power conversion efficiencies > 90

■ Pulse frequency modulation for high efficiency operation

■ Independent regulator shutdown for full load isolation

■ Adjustable current limit

■ Wide input voltage range (5.5V to 18V)