SL3052B 

COT Mode 6V/ 2A 1.2MHz 0.6VFB Synchronous BUCK

General Description

  The SL3052B isahigh-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 35uA and drops to <1uA in shutdown. The 2.5V to 6.0V input voltage range makesthe SL3052B 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 verylow outputripple voltagefor 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 SL3052B 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 

• 100/60mΩ Low RDS(ON) Internal MOSFETs 

• 2.0A 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

Simplified Application Circuit