DESCRIPTION

SP3406 is a high efficiency monolithic synchronous buck regulator using a constant frequency, current mode architecture. The device is available in an adjustable version and fixed output voltages, such as 1.5V,1.8V,etc. Supply

current with no load is 30uA and drops to

FEATURES

High Efficiency: Up to 96;

1.5MHz Constant Switching Frequency;

600mA Output Current at Vin=3V;

Integrated Main Switch and Synchronous Rectifier, No Schottky Diode Required;

2.5 to 6.5V input voltage;

Output Voltage as Low as 0.6V;

100 Duty Cycle in Dropout;

Quiescent Current: 30uA(input<4.2V);

Slope Compensated Current Mode Control for Excellent Line and Load Transient Response;

Short Circuit Protection and Thermal Fault Protection;

<1uA Shutdown Current;

Soft Start;

APPLICATIONS

Digital Camera

PDA

Hand Held Communication Equipment

Wireless and DSL Modems

Portable instrument

Microprocessor and DSP Core Supplies

MID or UPMC