Specification	LTC3621IDCB#TRMPBF

Current - Output	1 A
Frequency - Switching	1 MHz
Function	Step-Down
Mounting Type	Surface Mount
Number of Outputs	1
Operating Temperature [Max]	125 °C
Operating Temperature [Min]	-40 C
Output Configuration	Positive
Output Type	Adjustable
Package / Case	6-WFDFN Exposed Pad
Supplier Device Package	6-DFN (2x3)
Synchronous Rectifier	True
Topology	Buck
Voltage - Input (Max) [Max]	17 V
Voltage - Input (Min) [Min]	2.7 V
Voltage - Output (Max) [Max]	17 V
Voltage - Output (Min/Fixed)	0.6 V

LTC3621 Series

17V, 1A Synchronous Step-Down Regulator with 3.5μA Quiescent Current

Part	Current - Output	Mounting Type	Output Configuration	Voltage - Output (Max) [Max]	Voltage - Input (Max) [Max]	Operating Temperature [Min]	Operating Temperature [Max]	Number of Outputs	Supplier Device Package	Output Type	Voltage - Input (Min) [Min]	Topology	Function	Frequency - Switching	Voltage - Output (Min/Fixed)	Package / Case	Package / Case
Analog Devices Inc./Maxim Integrated LTC3621IDCB#TRMPBF	1 A	Surface Mount	Positive	17 V	17 V	-40 C	125 °C	1	6-DFN (2x3)	Adjustable	2.7 V	Buck	Step-Down	1 MHz	0.6 V	6-WFDFN Exposed Pad
Analog Devices Inc./Maxim Integrated LTC3621IDCB-2#TRMPBF	1 A	Surface Mount	Positive	17 V	17 V	-40 C	125 °C	1	6-DFN (2x3)	Adjustable	2.7 V	Buck	Step-Down	2.25 MHz	0.6 V	6-WFDFN Exposed Pad
Analog Devices Inc./Maxim Integrated LTC3621IDCB-3.3#TRMPBF	1 A	Surface Mount	Positive		17 V	-40 C	125 °C	1	6-DFN (2x3)		2.7 V	Buck	Step-Down	1 MHz	3.3 V	6-WFDFN Exposed Pad
Analog Devices Inc./Maxim Integrated LTC3621IMS8E-3.3#TRPBF	1 A	Surface Mount	Positive		17 V	-40 C	125 °C	1	8-MSOP-EP		2.7 V	Buck	Step-Down	1 MHz	3.3 V	8-MSOP 8-TSSOP Exposed Pad	0.118 in 3 mm
Analog Devices Inc./Maxim Integrated LTC3621EMS8E-5#TRPBF	1 A	Surface Mount	Positive		17 V	-40 C	125 °C	1	8-MSOP-EP		2.7 V	Buck	Step-Down	1 MHz	5 V	8-MSOP 8-TSSOP Exposed Pad	0.118 in 3 mm
Analog Devices Inc./Maxim Integrated LTC3621HMS8E#TRPBF	1 A	Surface Mount	Positive	17 V	17 V	-40 °C	150 °C	1	8-MSOP-EP	Adjustable	2.7 V	Buck	Step-Down	1 MHz	0.6 V	8-MSOP 8-TSSOP Exposed Pad	0.118 in 3 mm
Analog Devices Inc./Maxim Integrated LTC3621HMS8E-2#PBF	1 A	Surface Mount	Positive	17 V	17 V	-40 °C	150 °C	1	8-MSOP-EP	Adjustable	2.7 V	Buck	Step-Down	2.25 MHz	0.6 V	8-MSOP 8-TSSOP Exposed Pad	0.118 in 3 mm
Analog Devices Inc./Maxim Integrated LTC3621HMS8E-23.3#PBF	1 A	Surface Mount	Positive		17 V	-40 °C	150 °C	1	8-MSOP-EP		2.7 V	Buck	Step-Down	2.25 MHz	3.3 V	8-MSOP 8-TSSOP Exposed Pad	0.118 in 3 mm
Analog Devices Inc./Maxim Integrated LTC3621EMS8E#PBF	1 A	Surface Mount	Positive	17 V	17 V	-40 C	125 °C	1	8-MSOP-EP	Adjustable	2.7 V	Buck	Step-Down	1 MHz	0.6 V	8-MSOP 8-TSSOP Exposed Pad	0.118 in 3 mm
Analog Devices Inc./Maxim Integrated LTC3621IDCB-25#TRPBF	1 A	Surface Mount	Positive		17 V	-40 C	125 °C	1	6-DFN (2x3)		2.7 V	Buck	Step-Down	2.25 MHz	5 V	6-WFDFN Exposed Pad

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$	Updated

Digikey	N/A	897	$ 9.40	1m+
Mouser	N/A	1	$ 7.84	1m+
		10	$ 6.07
		25	$ 5.49
		100	$ 4.85
		250	$ 4.53
		500	$ 4.43
		1000	$ 4.37
Newark	Each (Supplied on Cut Tape)	1	$ 8.06	1m+
		10	$ 7.05
		25	$ 6.74
		50	$ 6.33
		100	$ 5.91
		250	$ 5.65
		500	$ 5.19
		1000	$ 4.21

Description

General part information

LTC3621 Series

The LTC3621/LTC3621-2 is a high efficiency 17V, 1A synchronous monolithic step-down regulator. The switching frequency is fixed to 1MHz or 2.25MHz with a ±40% synchronizing range. The regulator features ultralow quiescent current and high efficiencies over a wide VOUTrange.The step-down regulator operates from an input voltage range of 2.7V to 17V and provides an adjustable output range from 0.6V to VINwhile delivering up to 1A of output current. A user-selectable mode input is provided to allow the user to trade off ripple noise for light load efficiency; Burst Mode operation provides the highest efficiency at light loads, while pulse-skipping mode provides the lowest voltage ripple. The MODE pin can also be used to allow the user to sync the switching frequency to an external clock.LTC3621 OptionsPart NameFrequencyVOUTLTC36211.00MHzAdjustableLTC3621-3.31.00MHz3.3VLTC3621-51.00MHz5VLTC3621-22.25MHzAdjustableLTC3621-23.32.25MHz3.3LTC3621-252.25MHz5VAPPLICATIONSPortable-Handheld ScannersIndustrial and Embedded ComputingAutomotive ApplicationsEmergency Radio

Documents

Technical documentation and resources

LTC3621IDCB#TRMPBF | Datasheet

Datasheet

R539 Reliability Data

Reliability Data