PART NO.	PRICE	QUANTITY		STOCK	MANUFACTURE	DESCRIPTION	Mounting Style	Package / Case	Minimum Operating Temperature	Maximum Operating Temperature	Series	Packaging	Output Current	Output Voltage	Switching Frequency	Number of Outputs	Input Voltage MAX	Topology	Input Voltage MIN
L7981TR	1+ $1.690 10+ $1.440 100+ $1.150 500+ $1.010 4000+ $0.745		PDF RFQ	4,929 In-stock	STMicroelectronics	Switching Voltage Regulators 3A DC 4.5 V to 28 V Adj 0.6V 250 kHz	SMD/SMT	VFDFPN-8	- 40 C	+ 150 C	L7981	Reel	3 A	Adj	250 kHz	1 Output	28 V	Buck	4.5 V
AST1S31HF	1+ $2.670 10+ $2.270 100+ $1.970 250+ $1.870 3000+ $1.340		PDF RFQ	500 In-stock	STMicroelectronics	Switching Voltage Regulators Up to 4 V, 3 A step-down 2.3 MHz switching...	SMD/SMT	VFDFPN-8	- 40 C	+ 125 C		Reel	3 A	0.8 V to 4 V	2.3 MHz	1 Output	4 V	Buck	2.8 V
ST1S31PUR	1+ $1.240 10+ $1.050 100+ $0.807 500+ $0.713 3000+ $0.499		PDF RFQ	300 In-stock	STMicroelectronics	Switching Voltage Regulators 3A DC Step Down REG 2.8V to 5.5V 1.5M...	SMD/SMT	VFDFPN-8			ST1S31	Reel	3 A	Adj	1.5 MHz	1 Output	5.5 V	Buck
AST1S31PUR	3000+ $1.330 6000+ $1.280 9000+ $1.210	GET PRICE VIEW	PDF RFQ		STMicroelectronics	Switching Voltage Regulators 3 A DC step-down switching regulator	SMD/SMT	VFDFPN-8	- 40 C	+ 125 C		Reel	3 A	2.8 V to 4 V	1.5 MHz	1 Output	4 V	Buck	2.8 V