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BCT1451
600mA, 1.2MHz, 42V Synchronous Buck Converter
GENERAL DESCRIPTION
The BCT1451 is a high frequency, synchronous Buck converter with integrated switches. It can deliver up to 600mA to the output over a wide input voltage range of 5V to 42V. It is suitable for various industrial or automotive applications with high input voltage or for power conditioning from unregulated sources. Moreover, the low 14μA quiescent current and ultra-low shutdown current of only 0.6μA make it a suitable choice for battery-powered applications.
BCT1451 features high efficiency over a wide load range achieved by scaling down the switching frequency at light loads to reduce switching and gate driving losses. Other features include internal compensation, internal monotonic soft-start even with pre-biased output and fast loop response thanks to the peak- current mode controller. Switching at 1.2MHz, the BCT1451 can prevent EMI noise problems, such as the ones found in AM radio, ADSL and PLC applications.
Protection features include current limiting and short- circuit protection, thermal shutdown with auto recovery and output over-voltage protection. Frequency fold-back helps prevent inductor current runaway during startup.
BCT1451 is available in a Green SOT23-6 package.
APPLICATIONS
High Voltage Power Conversions
Automotive Systems
Industrial Power Systems
Distributed Power Systems
Battery Powered Systems
Power Meters
FEATURES
Wide 5V~42V Operating Input Voltage Range
0.8V Internal Reference
Low Quiescent Current: 14μA (TYP)
Shutdown Current: 0.6μA (TYP)
Current Output up to 600mA
1.2MHz Switching Frequency
Internal Compensation and Soft-Start
Simple Design and Minimal External
Components
Up to 95% Efficiency at 12V/400mA
0.8V to 24V Adjustable Output Voltage
Current Limit and Short-Circuit Protection
Output Over-Voltage Protection and Thermal
Shutdown
Power-Save Mode and PWM Mode Operation
Monotonic Startup with Pre-biased Output
90% Maximum Duty Cycle
Available in a Green SOT23-6 Package
-40℃ to +85℃ Operating Temperature Range
ORDERING INFORMATION
Order Number | Package Type | Temperature Range | Marking | QTY/Reel |
BCT1451EUT-TR | SOT23-6 | -40°C to +85°C | PPXX | 3000 |
"XX" in Marking will be appeared as the batch code.
