Switching Controllers – Mouser Singapore

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Buck Converters for Power Over Ethernet

A buck converter is a power efficient voltage step-down converter that changes a higher voltage to a lower voltage. Whereas a linear regulator can achieve the same purpose, regulators can waste more energy via conversion of excess energy to heat. For this reason, a buck DC/DC converter is the preferred choice for power-efficient designs. A DC/DC boost converter, also known as a step-up converter, is a semiconductor device or electrical circuit that has an output DC voltage that is greater than the DC input voltage.

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (SGD) Filter the results in the table by unit price based on your quantity.	Qty.	Topology	Number of Outputs	Switching Frequency	Duty Cycle - Max	Output Voltage	Output Current	Minimum Operating Temperature	Maximum Operating Temperature	Mounting Style	Package/Case	Qualification	Packaging
Switching Controllers CONSTANT-CURRENT BUCK REGULATOR FOR DRIVING HIGH POWER LEDS NCV30161MNWTXG onsemi 1: $2.23 2,935In Stock	Mfr. Part No. NCV30161MNWTXG Mouser Part No 863-NCV30161MNWTXG	onsemi	Switching Controllers CONSTANT-CURRENT BUCK REGULATOR FOR DRIVING HIGH POWER LEDS Learn More about onsemi energy storage solutions	Datasheet	2,935In Stock	Cut Tape $2.23 $1.63 $1.48 $1.32 Reel $1.10 View $1.24 $1.19 $1.17 $1.08 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	Buck	1 Output	2.4 MHz	100 %	1.36 V		- 40 C	+ 125 C	SMD/SMT	DFNW-10		Reel, Cut Tape, MouseReel
Switching Controllers High Efficiency Synchronous Buck Controller MIC2182-3.3YM Microchip Technology 1: $6.30 96In Stock	Mfr. Part No. MIC2182-3.3YM Mouser Part No 998-MIC2182-3.3YM	Microchip Technology	Switching Controllers High Efficiency Synchronous Buck Controller	Datasheet	96In Stock	$6.30 $5.22	Min.: 1 Mult.: 1	Buck	5 Output	330 kHz	86 %	3.3 V	20 A	- 40 C	+ 85 C	SMD/SMT	SOP-16		Tube
Switching Controllers Monolithic SMPS Controller MIC38C42-1YM Microchip Technology 1: $4.91 196In Stock	Mfr. Part No. MIC38C42-1YM Mouser Part No 998-MIC38C42-1YM	Microchip Technology	Switching Controllers Monolithic SMPS Controller	Datasheet	196In Stock	$4.91 $4.12 $3.74	Min.: 1 Mult.: 1	Boost, Buck, Flyback, Forward	1 Output	500 kHz	96 %	5 V	500 mA	- 40 C	+ 85 C	SMD/SMT	SOIC-14		Tube
Switching Controllers Monolithic SMPS Controller MIC38C42AYM Microchip Technology 1: $3.44 87In Stock	Mfr. Part No. MIC38C42AYM Mouser Part No 998-MIC38C42AYM	Microchip Technology	Switching Controllers Monolithic SMPS Controller	Datasheet	87In Stock	$3.44 $2.88 $2.61	Min.: 1 Mult.: 1	Boost, Buck, Flyback, Forward	1 Output	500 kHz	96 %	5 V	500 mA	- 40 C	+ 85 C	SMD/SMT	SOIC-8		Tube
Switching Controllers Current-Mode PWM Con troller A 595-UC384 A 595-UC3842D UC3842DTR Texas Instruments 1: $2.05 1,919In Stock	Mfr. Part No. UC3842DTR Mouser Part No 595-UC3842DTR	Texas Instruments	Switching Controllers Current-Mode PWM Con troller A 595-UC384 A 595-UC3842D	Datasheet	1,919In Stock	Cut Tape $2.05 $1.50 $1.36 $1.20 Reel $0.99 View $1.13 $1.09 $1.08 $0.985 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	Boost, Buck, Flyback, Forward	1 Output	500 kHz	100 %	5 V	200 mA	0 C	+ 70 C	SMD/SMT	SOIC-14		Reel, Cut Tape, MouseReel
Switching Controllers Current-Mode PWM Con troller ALT 595-UC3 ALT 595-UC3842N UC3842NG4 Texas Instruments 1: $3.01 891In Stock	Mfr. Part No. UC3842NG4 Mouser Part No 595-UC3842NG4	Texas Instruments	Switching Controllers Current-Mode PWM Con troller ALT 595-UC3 ALT 595-UC3842N	Datasheet	891In Stock	$3.01 $2.23 $1.99 $1.78 View $1.69 $1.28	Min.: 1 Mult.: 1	Boost, Buck, Flyback, Forward	1 Output	500 kHz	100 %	5 V	200 mA	0 C	+ 70 C	Through Hole	PDIP-8		Tube
Switching Controllers Two-Phase Sync SD Sw itching Cntlr LM2642MTC/NOPB Texas Instruments 1: $7.06 363In Stock	Mfr. Part No. LM2642MTC/NOPB Mouser Part No 926-LM2642MTC/NOPB	Texas Instruments	Switching Controllers Two-Phase Sync SD Sw itching Cntlr	Datasheet	363In Stock	$7.06 $5.37 $4.24 $4.04 $4.00	Min.: 1 Mult.: 1 Max.: 1,001	Buck	2 Output	300 kHz	98 %	1.3 V to 30 V	20 A	- 40 C	+ 125 C	SMD/SMT	TSSOP-28		Tube
Switching Controllers High-Performance Syn chronous Buck Contr A 926-LM21212MH-1/NOPB LM3743MM-300/NOPB Texas Instruments 1: $3.51 986In Stock	Mfr. Part No. LM3743MM-300/NOPB Mouser Part No 926-LM3743MM300NOPB	Texas Instruments	Switching Controllers High-Performance Syn chronous Buck Contr A 926-LM21212MH-1/NOPB	Datasheet	986In Stock	Cut Tape $3.51 $2.61 $2.39 $2.14 Reel $1.86 View $2.03 $1.96 $1.75 $1.74 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	Buck	1 Output	300 kHz	91 %	800 mV to 4.6 V	20 A	- 40 C	+ 125 C	SMD/SMT	MSOP-10		Reel, Cut Tape, MouseReel
Switching Controllers 500KHz Synchronous Buck Controller MIC2169AYMM Microchip Technology 1: $3.78 89In Stock	Mfr. Part No. MIC2169AYMM Mouser Part No 998-MIC2169AYMM	Microchip Technology	Switching Controllers 500KHz Synchronous Buck Controller	Datasheet	89In Stock	$3.78 $3.11	Min.: 1 Mult.: 1	Buck	1 Output	500 kHz	92 %	800 mV		- 40 C	+ 125 C	SMD/SMT	MSOP-10		Tube
Switching Controllers Monolithic SMPS Controller MIC38C43YN Microchip Technology 1: $2.19 323In Stock	Mfr. Part No. MIC38C43YN Mouser Part No 998-MIC38C43YN	Microchip Technology	Switching Controllers Monolithic SMPS Controller	Datasheet	323In Stock	$2.19 $1.82 $1.65	Min.: 1 Mult.: 1	Boost, Buck, Flyback, Forward	1 Output	500 kHz	96 %	5 V	500 mA	- 40 C	+ 85 C	Through Hole	DIP-8		Tube
Switching Controllers 75V, Dual Phase Advanced COT PWM Controller MIC2133YML-TR Microchip Technology 1: $3.33 3,571In Stock	Mfr. Part No. MIC2133YML-TR Mouser Part No 494-MIC2133YML-TR	Microchip Technology	Switching Controllers 75V, Dual Phase Advanced COT PWM Controller Learn More about Microchip Technology microchip mic2133 controllers	Datasheet	3,571In Stock	Cut Tape $3.33 $3.01 $2.99 $2.95 $2.86 Reel $2.68	Min.: 1 Mult.: 1 : 3,300	Buck	1 Output	100 kHz to 1 MHz	85 %	600 mV to 28 V	100 mA	- 40 C	+ 125 C	SMD/SMT	VQFN-32		Reel, Cut Tape
Switching Controllers Synchronous Buck Con troller A 595-TPS40 A 595-TPS40077PWPR TPS40077PWP Texas Instruments 1: $7.36 379In Stock	Mfr. Part No. TPS40077PWP Mouser Part No 595-TPS40077PWP	Texas Instruments	Switching Controllers Synchronous Buck Con troller A 595-TPS40 A 595-TPS40077PWPR	Datasheet	379In Stock	$7.36 $5.60 $4.84 $4.64 View $4.45 $4.30 $4.24 $4.18 Quote	Min.: 1 Mult.: 1	Buck	1 Output	1 MHz	93 %	700 mV	20 A	- 40 C	+ 85 C	SMD/SMT	HTSSOP-16		Tube
Switching Controllers AC Low Iq dual Sync Buck Cntrlr TPS43351QDAPRQ1 Texas Instruments 1: $8.73 1,850In Stock	Mfr. Part No. TPS43351QDAPRQ1 Mouser Part No 595-TPS43351QDAPRQ1	Texas Instruments	Switching Controllers AC Low Iq dual Sync Buck Cntrlr	Datasheet	1,850In Stock	Cut Tape $8.73 $6.69 $6.19 $5.63 View Reel $5.07 $5.36 $5.20 $5.14 $5.07 MouseReel Available	Min.: 1 Mult.: 1 : 2,000	Buck	2 Output	150 kHz to 600 kHz	98.75 %	5 V	6 A	- 40 C	+ 125 C	SMD/SMT	HTSSOP-38	AEC-Q100	Reel, Cut Tape, MouseReel
Switching Controllers Low-Voltage Synchron ous Buck Controller LM1771SSD/NOPB Texas Instruments 1: $3.41 597In Stock	Mfr. Part No. LM1771SSD/NOPB Mouser Part No 926-LM1771SSD/NOPB	Texas Instruments	Switching Controllers Low-Voltage Synchron ous Buck Controller	Datasheet	597In Stock	Cut Tape $3.41 $2.54 $2.33 $2.08 Reel $1.78 View $1.97 $1.90 $1.71 $1.70 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	Buck	1 Output	100 kHz to 1 MHz	95 %	800 mV to 4.5 V	6 A	- 40 C	+ 125 C	SMD/SMT	WSON-6		Reel, Cut Tape, MouseReel
Switching Controllers Fixed Freq 99% Duty Cycle Peak Current A A 595-TPS51220RHBT TPS51220RHBR Texas Instruments 1: $5.92 2,251In Stock	Mfr. Part No. TPS51220RHBR Mouser Part No 595-TPS51220RHBR	Texas Instruments	Switching Controllers Fixed Freq 99% Duty Cycle Peak Current A A 595-TPS51220RHBT	Datasheet	2,251In Stock	Cut Tape $5.92 $4.46 $4.09 $3.70 View Reel $3.18 $3.51 $3.48 $3.28 $3.18 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	Buck	2 Output	200 kHz to 1 MHz	99 %	1 V to 12 V	20 A	- 40 C	+ 85 C	SMD/SMT	VQFN-32		Reel, Cut Tape, MouseReel
Switching Controllers Current-Mode PWM Con troller ALT 595-UC3 ALT 595-UC3842AD8TR UC3842AD8TRG4 Texas Instruments 1: $1.33 2,711In Stock	Mfr. Part No. UC3842AD8TRG4 Mouser Part No 595-UC3842AD8TRG4	Texas Instruments	Switching Controllers Current-Mode PWM Con troller ALT 595-UC3 ALT 595-UC3842AD8TR	Datasheet	2,711In Stock	Cut Tape $1.33 $0.949 $0.855 $0.752 Reel $0.622 View $0.703 $0.673 $0.651 $0.607 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	Boost, Buck, Flyback, Forward	1 Output	500 kHz	100 %	5 V	200 mA	0 C	+ 70 C	SMD/SMT	SOIC-8		Reel, Cut Tape, MouseReel
Switching Controllers 1-V to 14-V voltage mode synchronous bu A 926-LM2745MTC/NOPB LM2745MTCX/NOPB Texas Instruments 1: $4.16 834In Stock	Mfr. Part No. LM2745MTCX/NOPB Mouser Part No 926-LM2745MTCX/NOPB	Texas Instruments	Switching Controllers 1-V to 14-V voltage mode synchronous bu A 926-LM2745MTC/NOPB	Datasheet	834In Stock	Cut Tape $4.16 $3.11 $2.86 $2.57 Reel $2.14 View $2.43 $2.39 $2.27 $2.11 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	Buck	1 Output	50 kHz to 1 MHz	86 %	600 mV to 13.5 V	20 A	- 40 C	+ 125 C	SMD/SMT	TSSOP-14		Reel, Cut Tape, MouseReel
Switching Controllers Mid Input Sync Buck w/Vltg Feed-Fwd TPS40074RHLR Texas Instruments 1: $5.30 2,626In Stock	Mfr. Part No. TPS40074RHLR Mouser Part No 595-TPS40074RHLR	Texas Instruments	Switching Controllers Mid Input Sync Buck w/Vltg Feed-Fwd	Datasheet	2,626In Stock	Cut Tape $5.30 $4.01 $3.88 $3.75 $3.73 Reel $3.73 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	Buck	1 Output	100 kHz to 1 MHz	95 %	700 mV to 23 V	20 A	- 40 C	+ 85 C	SMD/SMT	VQFN-20		Reel, Cut Tape, MouseReel
Switching Controllers Current-Mode NB Sys Pwr Controller TPS51220ATRTVRQ1 Texas Instruments 1: $6.98 2,517In Stock	Mfr. Part No. TPS51220ATRTVRQ1 Mouser Part No 595-TPS51220ATRTVRQ1	Texas Instruments	Switching Controllers Current-Mode NB Sys Pwr Controller	Datasheet	2,517In Stock	Cut Tape $6.98 $5.26 $4.83 $4.37 View Reel $3.84 $4.13 $4.11 $3.86 $3.84 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	Buck	2 Output	200 kHz to 1 MHz	99 %	1 V to 12 V	20 A	- 40 C	+ 85 C	SMD/SMT	WQFN-32	AEC-Q100	Reel, Cut Tape, MouseReel
Switching Controllers Automotive 2.2-MHz l ow-IQ synchronous b LM25141QURGERQ1 Texas Instruments 1: $7.09 3,988In Stock	Mfr. Part No. LM25141QURGERQ1 Mouser Part No 595-LM25141QURGERQ1	Texas Instruments	Switching Controllers Automotive 2.2-MHz l ow-IQ synchronous b Learn More about Texas Instruments ti lm25141 controller	Datasheet	3,988In Stock	Cut Tape $7.09 $5.39 $4.96 $4.50 View Reel $4.05 $4.28 $4.15 $4.09 $4.05 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	Buck	1 Output	440 kHz, 4.4 MHz	99 %	3.3 V, 5 V, 1.5 V to 15 V	30 A	- 40 C	+ 150 C	SMD/SMT	VQFN-24		Reel, Cut Tape, MouseReel
Switching Controllers Wide Input Range Syn Buck Controller A 5 A 595-LM5141RGER LM5141RGET Texas Instruments 1: $9.34 200In Stock	Mfr. Part No. LM5141RGET Mouser Part No 595-LM5141RGET	Texas Instruments	Switching Controllers Wide Input Range Syn Buck Controller A 5 A 595-LM5141RGER Learn More about Texas Instruments ti lm5141 controllers	Datasheet	200In Stock	Cut Tape $9.34 $7.19 $6.65 $6.62 Reel $5.90 View $5.89 $5.88 $5.81 Quote MouseReel Available	Min.: 1 Mult.: 1 : 250	Buck	1 Output	440 kHz, 2.2 MHz	99 %	3.3 V, 5 V, 1.5 V to 15 V	20 A	- 40 C	+ 125 C	SMD/SMT	VQFN-24	AEC-Q100	Reel, Cut Tape, MouseReel
Switching Controllers Adj Hi-Efficient Ste p-Dwn 20uA SOT-23 A A 595-TPS64201DBVT TPS64201DBVR Texas Instruments 1: $2.38 1,246In Stock	Mfr. Part No. TPS64201DBVR Mouser Part No 595-TPS64201DBVR	Texas Instruments	Switching Controllers Adj Hi-Efficient Ste p-Dwn 20uA SOT-23 A A 595-TPS64201DBVT	Datasheet	1,246In Stock	Cut Tape $2.38 $1.75 $1.59 $1.41 Reel $1.19 View $1.33 $1.28 $1.17 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	Buck	1 Output	450 kHz	100 %	1.2 V to 6.5 V	3 A	- 40 C	+ 85 C	SMD/SMT	SOT-23-6		Reel, Cut Tape, MouseReel
Switching Controllers Current-Mode PWM Con troller A 595-UC384 A 595-UC3843AD UC3843ADTR Texas Instruments 1: $0.802 2,691In Stock	Mfr. Part No. UC3843ADTR Mouser Part No 595-UC3843ADTR	Texas Instruments	Switching Controllers Current-Mode PWM Con troller A 595-UC384 A 595-UC3843AD	Datasheet	2,691In Stock	Cut Tape $0.802 $0.567 $0.533 Reel $0.532 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	Boost, Buck, Flyback, Forward	1 Output	500 kHz	100 %	5 V	200 mA	0 C	+ 70 C	SMD/SMT	SOIC-14		Reel, Cut Tape, MouseReel
Switching Controllers GSM Power Management System ADP1972ARUZ-R7 Analog Devices 1: $10.31 999In Stock	Mfr. Part No. ADP1972ARUZ-R7 Mouser Part No 584-ADP1972ARUZ-R7	Analog Devices	Switching Controllers GSM Power Management System Learn More about Analog Devices adi adp1972 pwm controller	Datasheet	999In Stock	Cut Tape $10.31 $10.08 $9.86 $9.66 View $9.52 $9.37 $9.37 MouseReel Available	Min.: 1 Mult.: 1 Max.: 799	Boost, Buck	1 Output	300 kHz	98 %		5 mA	- 40 C	+ 125 C	SMD/SMT	TSSOP-16		Reel, Cut Tape, MouseReel
Switching Controllers 40V Dual Low IQ, 100 DC Sync Buck CTL LTC7805RUFDM#PBF Analog Devices 1: $6.73 1,433In Stock	Mfr. Part No. LTC7805RUFDM#PBF Mouser Part No 584-LTC7805RUFDMPBF	Analog Devices	Switching Controllers 40V Dual Low IQ, 100 DC Sync Buck CTL Learn More about Analog Devices adi ltc7805 step down controller	Datasheet	1,433In Stock	$6.73 $6.58 $6.45 $6.31 View $6.22 $6.12 $6.02	Min.: 1 Mult.: 1 Max.: 1,146	Boost, Buck	2 Output	3 MHz	100 %	800 mV to 40 V	180 uA	- 40 C	+ 150 C	SMD/SMT	QFN-28		Tube