DESCRIPTION

The LX8940 is a 5V, low dropout, low quiescent current regulator rated for 1A of output current. It can regulate with as low as 0.4V headroom between the input and output voltages, thus minimizing power dissipation. In addition, it can be used in applications where worst case supplies require a low input-output differential to maintain regulation. This feature makes it ideal for computer monitors that have to comply with energy-efficient / Green PC programs, where the input voltage drops to only a few tenths of a volt above the output when power supply enters sleep-mode operation.

KEY FEATURES

■ 2 Internally Trimmed Output

■ Output Current In Excess Of 1A

■ Input-Output Differential Less Than 0.4V At 1A

■ Reverse Battery Protection

■ 60V Load Dump Protection

■ -50V Reverse Transient Protection

■ Short Circuit Protection

■ Internal Thermal Overload Protection

■ Available In 3-Lead Plastic TO- 220

■ Drops In Most lM2940 Sockets

APPLICATIONS

■ Small Headroom Battery Applications

■ High Efficiency Linear Regulators

■ Post Regulators For Switching Power Supplies

■ Green PC Monitor Applications