GENERAL DESCRIPTION

The ML4873 is a complete solution for DC to DC conversion and power management in multi-cell battery powered portable computers and instruments. Several advanced techniques are incorporated in the IC for the highest possible system efficiency and lowest battery drain.

FEATURES

■ Two synchronously rectified, 100kHz buck regulators for 5V and 3.3V outputs

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

■ N-channel MOSFET drive for lowest cost

■ Burst mode for efficient operation at light load

■ µPower 5V standby linear regulator for power management logic

■ 12V low drop out linear regulator with high output (to 300mA) capability

■ Automatic charger disconnect switch comparator and N-channel driver

■ Wide input voltage range (5.5V to 30V)

■ 28-Lead SOIC or SSOP packages