SL3051B COT Mode 6V/1.2A 1.2MHz 0.6VFB Synchronous BUCK

General Description 

The SL3051B is a high-efficiency monolithic synchronous buck regulator using a constant frequency, COT mode architecture. The device is available in an adjustable version. Supply current with no load is 30uA and drops to <1uA in shutdown. The 2.5V to 6.0V input voltage range makes the SL3051B ideally suited for single Li-Ion battery powered applications. 100% duty cycle provides low dropout operation, extending battery life in portable systems. DCM mode operation provides very low output ripple voltage for noise sensitive applications. Switching frequency is internally set at 1.2MHz, allowing the use of small surface mount inductors and capacitors. Low output voltages are easily supported with the 0.6V feedback reference voltage. The SL3051B requires a minimal number of readily available, external components and is available in a small package.

Features

• Wide 2.5V to 6.0V Operating Input Range 

• 350/230mΩ Low RDS(ON) Internal MOSFETs 

• 1.2A Continuous Output Current 

• Output Adjustable from 0.6V

• 1.2MHz Switching Frequency 

• Low EMI Signature

• Short Protection with Hiccup-Mode 

• 100% Duty cycle

• Built-in Over Current Limit 

• Thermal Shutdown

• 10% To 100% load Transients, 

• COT Mode Output Change Less than 5% 

• MSL3 Package Level

• DCM for High Efficiency in Light Load 

• Integrated internal Soft-Start

Applications

• Automotive Entertainment 

• IoT Applications 

• Wireless and DSL Modems 

• Digital Still and Video Cameras 

• Computer Entertainment 

• Portable Instruments

Typical Application