DESCRIPTION

The SP6122 is a PWM/PFM minimum on-time controller designed to work from a single 3V-5.5V input supply. It is engineered specifically for size and minimum component count, simplifying the transition from a linear regulator to a switcher solution. However, unlike other “micro” parts, the SP6122 has an array of value added features such as optional hiccup mode, over current protection, TTL enable, “jitter and frequency stabilization” and a fault flag pull-down pin. Combined with reference and driver specifications usually found on more expensive integrated circuits, the SP6122 delivers great performance and value in an 8 pin MSOP package.

■ Optimized for Single Supply, 3V-5.5V Applications

■ High Efficiency, Greater than 90% Possible

■ 20ns/1nF PFET Output Driver

■ Fast Transient Response

■ Open Drain Fault Output Pin

■ Internal Soft Start Circuit

■ Accurate 1.5% Reference

■ Programmable Output Voltage or Fixed 1.5V Output

■ Loss-less Adjustable Current Limit with High side RDS(ON) Sensing

■ Hiccup or Lock-up Fault Modes

■ Low 5µA Sleep Mode Quiescent Current

■ Low 300µA Protected Mode Quiescent Current

■ Ultra Low, 150µA Unprotected Mode Quiescent Current

■ High Light Load Efficiency

■ Offered in Tiny 8 pin MSOP Package

APPLICATIONS

■ Video Cards

■ High Power Portable

■ Microcontrollers

■ I/O & Logic

■ Industrial Control

■ Distributed Power

■ Low Voltage Power