DESCRIPTION

The LX8554 series ICs are very low dropout three-terminal positive regulators with 5A rated output current. This product family is ideally suited for Pentium? Processor and Power PCTM applications requiring fast transient response. The LX8554 is guaranteed to have a dropout voltage under 1V at 5A load, making it ideal to provide well-regulated outputs of 2.5V to 3.6V with input supply as low as 4.75V. Fixed versions are also available and are specified in the Available Options table below.

KEY FEATURES

■ THREE-TERMINAL ADJUSTABLE OR FIXED OUTPUT

■ GUARANTEED ≤ 1V HEADROOM AT 5A

■ OUTPUT CURRENT OF 5A

□ FAST TRANSIENT RESPONSE

□ 1 VOLTAGE REFERENCE INITIAL ACCURACY

□ OUTPUT SHORT-CIRCUIT PROTECTION

□ BUILT-IN THERMAL SHUTDOWN

■ EVALUATION BOARD AVAILABLE: REQUEST LXE9001 EVALUATION KIT

APPLICATIONS

■ PENTIUM PROCESSOR SUPPLIES

■ POWER PC SUPPLIES

■ MICROPROCESSOR SUPPLIES

■ LOW VOLTAGE LOGIC SUPPLIES

■ BATTERY POWERED CIRCUIT

■ POST REGULATOR FOR SWITCHING SUPPLY