Voltage Regulators - Switching Regulators

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LTC3309A/B Synchronous Step-Down DC/DC Converters

Analog Devices LTC3309A/B Synchronous 6A Step-Down DC/DC Converters feature Silent Switcher™ architecture designed to minimize EMI/EMC emissions. LTC3309A/B Converters are ideal for applications such as optical networking, servers, telecom, and DC power systems. These small, high-efficiency, low-noise, monolithic synchronous converters operate from a 2.25V to 5.5V input supply. These regulators achieve fast transient response with small external components using a constant frequency, peak current mode control at switching frequencies up to 3MHz, and minimum on-time as low as 22ns. These ICs regulate output voltages as low as 500mV. The devices are available in a low profile 12-lead 2mm x 2mm x 0.74mm LQFN-12 package with an exposed pad for low thermal resistance.

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (CAD) Filter the results in the table by unit price based on your quantity.	Qty.	Mounting Style	Package / Case	Topology	Output Voltage	Output Current	Number of Outputs	Quiescent Current	Switching Frequency	Minimum Operating Temperature	Maximum Operating Temperature	Series	Packaging
Switching Voltage Regulators 5V, 6A, 10 MHz Synchronous Step-Down Silent Switcher in 2mm 2mm LQFN LTC3309BJV#TRMPBF Analog Devices 1: $12.79 390In Stock	Mfr. Part # LTC3309BJV#TRMPBF Mouser Part # 584-3309BJVTRMPBF	Analog Devices	Switching Voltage Regulators 5V, 6A, 10 MHz Synchronous Step-Down Silent Switcher in 2mm 2mm LQFN Learn More about Analog Devices ltc3309a step down converter	Datasheet	390In Stock	Cut Tape $12.79 $9.91 $9.19 $8.40 $8.02 $8.02 MouseReel Available	Min.: 1 Mult.: 1 Max.: 312	SMD/SMT	LQFN-12	Buck	500 mV to 5.5 V	6 A	1 Output	1.2 mA	1 MHz to 3 MHz	- 40 C	+ 125 C	LTC3309	Reel, Cut Tape, MouseReel
Switching Voltage Regulators 5V, 6A Synchronous Step-Down Silent Switcher in 2mm 2mm LQFN LTC3309AJV#TRPBF Analog Devices 1: $11.43 879In Stock	Mfr. Part # LTC3309AJV#TRPBF Mouser Part # 584-LTC3309AJV#TRPBF	Analog Devices	Switching Voltage Regulators 5V, 6A Synchronous Step-Down Silent Switcher in 2mm 2mm LQFN Learn More about Analog Devices ltc3309a step down converter	Datasheet	879In Stock	Cut Tape $11.43 $8.81 $8.16 $7.44 View $6.90 $6.88 $6.88 MouseReel Available	Min.: 1 Mult.: 1 Max.: 703	SMD/SMT	LQFN-12	Buck	500 mV to 5.5 V	6 A	1 Output	1.2 mA	2 MHz	- 40 C	+ 150 C	LTC3309	Reel, Cut Tape, MouseReel
Switching Voltage Regulators 5V, 6A Synchronous Step-Down Silent Switcher in 2mm 2mm LQFN LTC3309AJV#TRMPBF Analog Devices 1: $11.43 1,110In Stock	Mfr. Part # LTC3309AJV#TRMPBF Mouser Part # 584-LTC3309AJVTRMPBF	Analog Devices	Switching Voltage Regulators 5V, 6A Synchronous Step-Down Silent Switcher in 2mm 2mm LQFN Learn More about Analog Devices ltc3309a step down converter	Datasheet	1,110In Stock	Cut Tape $11.43 $8.81 $8.16 $7.44 $6.90 Reel $6.87	Min.: 1 Mult.: 1 Max.: 888 : 500	SMD/SMT	LQFN-12	Buck	500 mV to 5.5 V	6 A	1 Output	1.2 mA	2 MHz	- 40 C	+ 150 C	LTC3309	Reel, Cut Tape
Switching Voltage Regulators 5V, 6A, 10 MHz Synchronous Step-Down Silent Switcher in 2mm 2mm LQFN LTC3309BEV#TRMPBF Analog Devices 1: $9.79 1,712In Stock	Mfr. Part # LTC3309BEV#TRMPBF Mouser Part # 584-3309BEVTRMPBF	Analog Devices	Switching Voltage Regulators 5V, 6A, 10 MHz Synchronous Step-Down Silent Switcher in 2mm 2mm LQFN Learn More about Analog Devices ltc3309a step down converter	Datasheet	1,712In Stock	Cut Tape $9.79 $7.52 $6.94 $6.42 Reel $5.44	Min.: 1 Mult.: 1 Max.: 1,369 : 500	SMD/SMT	LQFN-12	Buck	500 mV to 5.5 V	6 A	1 Output	1.2 mA	1 MHz to 3 MHz	- 40 C	+ 125 C	LTC3309	Reel, Cut Tape
Switching Voltage Regulators 5V, 6A, 10 MHz Synchronous Step-Down Silent Switcher in 2mm 2mm LQFN LTC3309BMPV#TRMPBF Analog Devices 1: $23.24 486In Stock	Mfr. Part # LTC3309BMPV#TRMPBF Mouser Part # 584-3309BMPVTRMPB	Analog Devices	Switching Voltage Regulators 5V, 6A, 10 MHz Synchronous Step-Down Silent Switcher in 2mm 2mm LQFN Learn More about Analog Devices ltc3309a step down converter	Datasheet	486In Stock	Cut Tape $23.24 $18.30 $17.06 $15.72 $14.96 $14.96 MouseReel Available	Min.: 1 Mult.: 1 Max.: 388	SMD/SMT	LQFN-12	Buck	500 mV to 5.5 V	6 A	1 Output	1.2 mA	1 MHz to 3 MHz	- 40 C	+ 125 C	LTC3309	Reel, Cut Tape, MouseReel
Switching Voltage Regulators 5V, 6A Synchronous Step-Down Silent Switcher in 2mm 2mm LQFN LTC3309AHV#TRMPBF Analog Devices 1: $12.56 39In Stock	Mfr. Part # LTC3309AHV#TRMPBF Mouser Part # 584-3309AHV#TRMPBF	Analog Devices	Switching Voltage Regulators 5V, 6A Synchronous Step-Down Silent Switcher in 2mm 2mm LQFN Learn More about Analog Devices ltc3309a step down converter	Datasheet	39In Stock	Cut Tape $12.56 $9.71 $9.01 $8.22 $7.60 View $7.82 $7.36 Quote MouseReel Available	Min.: 1 Mult.: 1	SMD/SMT	LQFN-12	Buck	500 mV to 5.5 V	6 A	1 Output	1.2 mA	1 MHz to 3 MHz	- 40 C	+ 150 C	LTC3309	Reel, Cut Tape, MouseReel
Switching Voltage Regulators 5V, 6A Synchronous Step-Down Silent Switcher in 2mm 2mm LQFN LTC3309AIV#TRPBF Analog Devices 1: $10.86 1,355In Stock	Mfr. Part # LTC3309AIV#TRPBF Mouser Part # 584-LTC3309AIV#TRPBF	Analog Devices	Switching Voltage Regulators 5V, 6A Synchronous Step-Down Silent Switcher in 2mm 2mm LQFN Learn More about Analog Devices ltc3309a step down converter	Datasheet	1,355In Stock	Cut Tape $10.86 $8.34 $7.72 $7.03 View $6.75 $6.65 $6.60 $6.60 MouseReel Available	Min.: 1 Mult.: 1 Max.: 1,572	SMD/SMT	LQFN-12	Buck	500 mV to 5.5 V	6 A	1 Output	1.2 mA	1 MHz to 3 MHz	- 40 C	+ 125 C	LTC3309	Reel, Cut Tape, MouseReel
Switching Voltage Regulators 5V, 6A Synchronous Step-Down Silent Switcher in 2mm 2mm LQFN LTC3309AMPV#TRMPBF Analog Devices 1: $21.67 15In Stock	Mfr. Part # LTC3309AMPV#TRMPBF Mouser Part # 584-3309AMPV#TRMPBF	Analog Devices	Switching Voltage Regulators 5V, 6A Synchronous Step-Down Silent Switcher in 2mm 2mm LQFN Learn More about Analog Devices ltc3309a step down converter	Datasheet	15In Stock	Cut Tape $21.67 $16.98 $15.80 $14.73 $12.51 Quote Quote	Min.: 1 Mult.: 1	SMD/SMT	LQFN-12	Buck	500 mV to 5.5 V	6 A	1 Output	1.2 mA	1 MHz to 3 MHz	- 55 C	+ 150 C	LTC3309	Reel, Cut Tape
Switching Voltage Regulators 5V, 6A, 10 MHz Synchronous Step-Down Silent Switcher in 2mm 2mm LQFN LTC3309BHV#TRMPBF Analog Devices 1: $13.51 52In Stock	Mfr. Part # LTC3309BHV#TRMPBF Mouser Part # 584-3309BHVTRMPBF	Analog Devices	Switching Voltage Regulators 5V, 6A, 10 MHz Synchronous Step-Down Silent Switcher in 2mm 2mm LQFN Learn More about Analog Devices ltc3309a step down converter	Datasheet	52In Stock	Cut Tape $13.51 $10.51 $9.76 $8.94 $8.29 View $8.58 $8.01 Quote MouseReel Available	Min.: 1 Mult.: 1	SMD/SMT	LQFN-12	Buck	500 mV to 5.5 V	6 A	1 Output	1.2 mA	1 MHz to 3 MHz	- 40 C	+ 125 C	LTC3309	Reel, Cut Tape, MouseReel
Switching Voltage Regulators 5V, 6A, 10 MHz Synchronous Step-Down Silent Switcher in 2mm 2mm LQFN LTC3309BIV#TRMPBF Analog Devices 1: $11.42 184In Stock	Mfr. Part # LTC3309BIV#TRMPBF Mouser Part # 584-3309BIVTRMPBF	Analog Devices	Switching Voltage Regulators 5V, 6A, 10 MHz Synchronous Step-Down Silent Switcher in 2mm 2mm LQFN Learn More about Analog Devices ltc3309a step down converter	Datasheet	184In Stock	Cut Tape $11.42 $8.80 $8.15 $7.43 $7.43	Min.: 1 Mult.: 1 Max.: 147	SMD/SMT	LQFN-12	Buck	500 mV to 5.5 V	6 A	1 Output	1.2 mA	1 MHz to 3 MHz	- 40 C	+ 125 C	LTC3309	Reel, Cut Tape

LTC3309A/B Synchronous Step-Down DC/DC Converters

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