LTC3622 Series

17V, Dual 1A Synchronous Step-Down Regulator with Ultralow Quiescent Current

Catalog

17V, Dual 1A Synchronous Step-Down Regulator with Ultralow Quiescent Current

Part	Voltage - Input (Max) [Max]	Current - Output	Topology	Output Configuration	Function	Frequency - Switching	Operating Temperature [Min]	Operating Temperature [Max]	Output Type	Voltage - Output (Min/Fixed)	Mounting Type	Package / Case	Voltage - Input (Min) [Min]	Supplier Device Package	Number of Outputs	Voltage - Output (Max) [Max]	Output Type	Package / Case
Analog Devices LTC3622EDE-23/5#TRPBF	17 V	1 A	Buck	Positive	Step-Down	2.25 MHz	-40 °C	125 ¯C	1.81 mOhm	3.3 V 5 V	Surface Mount	14-WFDFN Exposed Pad	2.7 V	14-DFN (4x3)	2
Analog Devices LTC3622HDE-23/5#PBF	17 V	1 A	Buck	Positive	Step-Down	2.25 MHz	-40 °C	150 °C	1.81 mOhm	3.3 V 5 V	Surface Mount	14-WFDFN Exposed Pad	2.7 V	14-DFN (4x3)	2
Analog Devices LTC3622EDE-2#TRPBF	17 V	1 A	Buck	Positive	Step-Down	2.25 MHz	-40 °C	125 ¯C		0.6 V	Surface Mount	14-WFDFN Exposed Pad	2.7 V	14-DFN (4x3)	2	17 V	Adjustable
Analog Devices LTC3622HMSE#PBF	17 V	1 A	Buck	Positive	Step-Down	1 MHz	-40 °C	150 °C		0.6 V	Surface Mount	16-TFSOP Exposed Pad	2.7 V	16-MSOP-EP	2	17 V	Adjustable	0.118 in 3 mm
Analog Devices LTC3622EDE-23/5#PBF	17 V	1 A	Buck	Positive	Step-Down	2.25 MHz	-40 °C	125 ¯C	1.81 mOhm	3.3 V 5 V	Surface Mount	14-WFDFN Exposed Pad	2.7 V	14-DFN (4x3)	2
Analog Devices LTC3622HMSE-2#TRPBF	17 V	1 A	Buck	Positive	Step-Down	2.25 MHz	-40 °C	150 °C		0.6 V	Surface Mount	16-TFSOP Exposed Pad	2.7 V	16-MSOP-EP	2	17 V	Adjustable	0.118 in 3 mm
Analog Devices LTC3622IDE#TRPBF	17 V	1 A	Buck	Positive	Step-Down	1 MHz	-40 °C	125 ¯C		0.6 V	Surface Mount	14-WFDFN Exposed Pad	2.7 V	14-DFN (4x3)	2	17 V	Adjustable
Analog Devices LTC3622IDE-23/5#TRPBF	17 V	1 A	Buck	Positive	Step-Down	2.25 MHz	-40 °C	125 ¯C	1.81 mOhm	3.3 V 5 V	Surface Mount	14-WFDFN Exposed Pad	2.7 V	14-DFN (4x3)	2
Analog Devices LTC3622IMSE#PBF	17 V	1 A	Buck	Positive	Step-Down	1 MHz	-40 °C	125 ¯C		0.6 V	Surface Mount	16-TFSOP Exposed Pad	2.7 V	16-MSOP-EP	2	17 V	Adjustable	0.118 in 3 mm
Analog Devices LTC3622EDE-2#PBF	17 V	1 A	Buck	Positive	Step-Down	2.25 MHz	-40 °C	125 ¯C		0.6 V	Surface Mount	14-WFDFN Exposed Pad	2.7 V	14-DFN (4x3)	2	17 V	Adjustable

Catalog

17V, Dual 1A Synchronous Step-Down Regulator with Ultralow Quiescent Current

Key Features

• Dual Step-Down Outputs: 1A Per Channel

• Wide VINRange: 2.7V to 17V

• Wide VOUTRange: 0.6V to VIN

• Up to 95% Efficiency

• No-Load IQ= 5μA with Both Channels Enabled; IQ< 4μA with Only One Channel Enabled

• High Efficiency, Low Dropout Operation (100% Duty Cycle)

• Constant Frequency (1MHz/2.25MHz) with External Frequency Synchronization

• ±1% Output Voltage Accuracy

• Current Mode Operation for Excellent Line and Load Transient Response

• Phase Shift Programmable with External Clock

• Selectable Current Limit

• Internal Compensation and Soft-Start

• Compact 14-Pin DFN (3mm × 4mm) and 16-Lead MSOP Packages

Description

The LTC3622 is a dual 1A output, high efficiency synchronous monolithic step-down regulator capable of operating from input supplies up to 17V. The switching frequency is fixed to 1MHz or 2.25MHz with a ±50% synchronization range to an external clock. The regulator features ultralow quiescent current and high efficiency over a wide output voltage range.The step-down regulators operate from an input voltage range of 2.7V to 17V and provide an adjustable output from 0.6V to VIN while 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 ripple noise. The switching regulators can be synchronized to an external clock. Furthermore, fixed VOUToptions are available to eliminate the external feedback resistors.LTC3622 OptionsPart NameFrequencyVOUTLTC36221.00MHzAdjustableLTC3622-22.25MHzAdjustableLTC3622-23/52.25MHZ5V/3.3VApplicationsBattery Powered SystemsPoint-of-Load SuppliesPortable – Handheld Scanners