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DCP3603 3A Synchronous Buck Converters

STMicroelectronics DCP3603 3A Synchronous Buck Converters are wide-input voltage, easy-to-use synchronous buck converters that can drive up to 3A load current. The extended input range from 3.3V to 36V makes the device suitable for a wide range of industrial applications. The STMicroelectronics DCP3603 operates at either 500kHz or 1.0MHz fixed switching frequency, allowing the use of small inductors for an optimized solution size. Optional switching frequency dithering is implemented to improve EMI performance. It is based on a peak current mode architecture, including soft-start circuit, overcurrent protection circuit, overtemperature protection, output overvoltage protection, and is packaged in a SOT-23-6L package.

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Select	Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (USD) Filter the results in the table by unit price based on your quantity.	Qty.	RoHS	ECAD Model	Mounting Style	Package / Case	Topology	Output Voltage	Output Current	Number of Outputs	Quiescent Current	Switching Frequency	Minimum Operating Temperature	Maximum Operating Temperature	Packaging
	Switching Voltage Regulators 36 V 3 A synchronous step-down converter in SOT23-6L DCP3603BCMR STMicroelectronics 1: $1.43 206In Stock 9,000On Order New Product	Mfr. Part # DCP3603BCMR Mouser Part # 511-DCP3603BCMR New Product	STMicroelectronics	Switching Voltage Regulators 36 V 3 A synchronous step-down converter in SOT23-6L Learn More about STMicroelectronics st dcp3603 synchronous buck converters	Datasheet	206In Stock 9,000On Order On Order Ship Dates Mfr. #: DCP3603BCMR Stock: 206 Can Ship Immediately On Order: 3,000 Expected 7/16/2027 3,000 Expected 7/30/2027 3,000 TBD Factory Lead-Time: 52 Weeks	Cut Tape $1.43 $1.05 $0.946 $0.839 View Reel $0.699 $0.787 $0.757 $0.737 $0.699	Min.: 1 Mult.: 1 : 3,000			SMD/SMT								- 40 C	+ 150 C	Reel, Cut Tape
	Switching Voltage Regulators 36 V 3 A synchronous step-down converter in SOT23-6L DCP3603ACMR STMicroelectronics 1: $1.46 3,300On Order New Product	Mfr. Part # DCP3603ACMR Mouser Part # 511-DCP3603ACMR New Product	STMicroelectronics	Switching Voltage Regulators 36 V 3 A synchronous step-down converter in SOT23-6L Learn More about STMicroelectronics st dcp3603 synchronous buck converters	Datasheet	3,300On Order On Order Ship Dates Mfr. #: DCP3603ACMR Stock: 0 On Order: 300 Expected 11/10/2026 3,000 Expected 11/12/2026 Factory Lead-Time: 36 Weeks	Cut Tape $1.46 $1.05 $0.958 $0.847 View Reel $0.707 $0.794 $0.762 $0.728 $0.707	Min.: 1 Mult.: 1 : 3,000			SMD/SMT	SOT-23-6	Buck	Adjustable	3 A	1 Output	85 uA	500 kHz	- 40 C	+ 150 C	Reel, Cut Tape
	Switching Voltage Regulators 36 V 3 A synchronous step-down converter in SOT23-6L DCP3603ANDMR STMicroelectronics 1: $1.47 3,300On Order New Product	Mfr. Part # DCP3603ANDMR Mouser Part # 511-DCP3603ANDMR New Product	STMicroelectronics	Switching Voltage Regulators 36 V 3 A synchronous step-down converter in SOT23-6L Learn More about STMicroelectronics st dcp3603 synchronous buck converters	Datasheet	3,300On Order On Order Ship Dates Mfr. #: DCP3603ANDMR Stock: 0 On Order: 300 Expected 11/10/2026 3,000 Expected 11/11/2026 Factory Lead-Time: 52 Weeks	Cut Tape $1.47 $1.06 $0.959 $0.848 View Reel $0.694 $0.795 $0.763 $0.729 $0.694	Min.: 1 Mult.: 1 : 3,000			SMD/SMT	SOT-23-6	Buck	Adjustable	3 A	1 Output	85 uA	500 kHz	- 40 C	+ 150 C	Reel, Cut Tape
	Switching Voltage Regulators 36 V 3 A synchronous step-down converter in SOT23-6L DCP3603BCDMR STMicroelectronics 1: $1.47 3,300On Order New Product	Mfr. Part # DCP3603BCDMR Mouser Part # 511-DCP3603BCDMR New Product	STMicroelectronics	Switching Voltage Regulators 36 V 3 A synchronous step-down converter in SOT23-6L Learn More about STMicroelectronics st dcp3603 synchronous buck converters	Datasheet	3,300On Order On Order Ship Dates Mfr. #: DCP3603BCDMR Stock: 0 On Order: 300 Expected 11/10/2026 3,000 Expected 11/11/2026 Factory Lead-Time: 52 Weeks	Cut Tape $1.47 $1.06 $0.959 $0.848 View Reel $0.694 $0.795 $0.763 $0.729 $0.694	Min.: 1 Mult.: 1 : 3,000			SMD/SMT	SOT-23-6	Buck	Adjustable	3 A	1 Output	85 uA	1 MHz	- 40 C	+ 150 C	Reel, Cut Tape
	Switching Voltage Regulators 36 V 3 A synchronous step-down converter in SOT23-6L DCP3603BNDMR STMicroelectronics 1: $1.47 3,300On Order New Product	Mfr. Part # DCP3603BNDMR Mouser Part # 511-DCP3603BNDMR New Product	STMicroelectronics	Switching Voltage Regulators 36 V 3 A synchronous step-down converter in SOT23-6L Learn More about STMicroelectronics st dcp3603 synchronous buck converters	Datasheet	3,300On Order On Order Ship Dates Mfr. #: DCP3603BNDMR Stock: 0 On Order: 3,000 Expected 8/6/2027 300 TBD Factory Lead-Time: 52 Weeks	Cut Tape $1.47 $1.06 $0.959 $0.848 View Reel $0.694 $0.795 $0.763 $0.729 $0.694	Min.: 1 Mult.: 1 : 3,000			SMD/SMT	SOT-23-6	Buck	Adjustable	3 A	1 Output	85 uA	1 MHz	- 40 C	+ 150 C	Reel, Cut Tape
	Switching Voltage Regulators 36 V 3 A synchronous step-down converter in SOT23-6L DCP3603BNMR STMicroelectronics 1: $1.47 3,300On Order New Product	Mfr. Part # DCP3603BNMR Mouser Part # 511-DCP3603BNMR New Product	STMicroelectronics	Switching Voltage Regulators 36 V 3 A synchronous step-down converter in SOT23-6L Learn More about STMicroelectronics st dcp3603 synchronous buck converters	Datasheet	3,300On Order On Order Ship Dates Mfr. #: DCP3603BNMR Stock: 0 On Order: 300 Expected 11/10/2026 3,000 Expected 11/12/2026 Factory Lead-Time: 52 Weeks	Cut Tape $1.47 $1.06 $0.959 $0.848 View Reel $0.694 $0.795 $0.763 $0.729 $0.694	Min.: 1 Mult.: 1 : 3,000			SMD/SMT	SOT-23-6	Buck	Adjustable	3 A	1 Output	85 uA	1 MHz	- 40 C	+ 150 C	Reel, Cut Tape