Integrated Circuits (ICs)

LTC3619EDD#PBF

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Analog Devices Inc./Maxim Integrated

400MA/800MA SYNCHRONOUS STEP-DOWN DC/DC WITH AVERAGE INPUT CURRENT LIMIT

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DocumentsR457 Reliability Data Datasheet

Integrated Circuits (ICs)

LTC3619EDD#PBF

Active

Analog Devices Inc./Maxim Integrated

400MA/800MA SYNCHRONOUS STEP-DOWN DC/DC WITH AVERAGE INPUT CURRENT LIMIT

Deep-Dive with AI

DocumentsR457 Reliability Data Datasheet

Specifications Series Pricing Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	LTC3619EDD#PBF

Current - Output	400 mA, 800 mA
Frequency - Switching	2.25 MHz
Function	Step-Down
Mounting Type	Surface Mount
Number of Outputs	2
Operating Temperature [Max]	125 °C
Operating Temperature [Min]	-40 C
Output Configuration	Positive
Output Type	Adjustable
Package / Case	10-WFDFN Exposed Pad
Supplier Device Package	10-DFN (3x3)
Synchronous Rectifier	True
Topology	Buck
Voltage - Input (Max) [Max]	5.5 V
Voltage - Input (Min) [Min]	2.5 V
Voltage - Output (Max) [Max]	5 V
Voltage - Output (Min/Fixed)	0.6 V

LTC3619 Series

Part	Supplier Device Package	Mounting Type	Output Configuration	Voltage - Input (Max) [Max]	Voltage - Output (Max) [Max]	Voltage - Output (Min/Fixed)	Package / Case	Current - Output	Number of Outputs	Topology	Frequency - Switching	Voltage - Input (Min) [Min]	Output Type	Operating Temperature [Min]	Operating Temperature [Max]	Function
Analog Devices Inc./Maxim Integrated LTC3619BEMSE#TRPBF	10-MSOP-EP	Surface Mount	Positive	5.5 V	5 V	0.6 V	10-MSOP 10-TFSOP Exposed Pad	400 mA 800 mA	2	Buck	2.25 MHz	2.5 V	Adjustable	-40 C	125 °C	Step-Down
Analog Devices Inc./Maxim Integrated LTC3619EMSE#PBF	10-MSOP-EP	Surface Mount	Positive	5.5 V	5 V	0.6 V	10-MSOP 10-TFSOP Exposed Pad	400 mA 800 mA	2	Buck	2.25 MHz	2.5 V	Adjustable	-40 C	125 °C	Step-Down
Analog Devices Inc./Maxim Integrated LTC3619BIMSE#PBF	10-MSOP-EP	Surface Mount	Positive	5.5 V	5 V	0.6 V	10-MSOP 10-TFSOP Exposed Pad	400 mA 800 mA	2	Buck	2.25 MHz	2.5 V	Adjustable	-40 C	125 °C	Step-Down
Analog Devices Inc./Maxim Integrated LTC3619BIDD#TRPBF	10-DFN (3x3)	Surface Mount	Positive	5.5 V	5 V	0.6 V	10-WFDFN Exposed Pad	400 mA 800 mA	2	Buck	2.25 MHz	2.5 V	Adjustable	-40 C	125 °C	Step-Down
Analog Devices Inc./Maxim Integrated LTC3619BIMSE#TRPBF	10-MSOP-EP	Surface Mount	Positive	5.5 V	5 V	0.6 V	10-MSOP 10-TFSOP Exposed Pad	400 mA 800 mA	2	Buck	2.25 MHz	2.5 V	Adjustable	-40 C	125 °C	Step-Down
Analog Devices Inc./Maxim Integrated LTC3619EDD#PBF	10-DFN (3x3)	Surface Mount	Positive	5.5 V	5 V	0.6 V	10-WFDFN Exposed Pad	400 mA 800 mA	2	Buck	2.25 MHz	2.5 V	Adjustable	-40 C	125 °C	Step-Down
Analog Devices Inc./Maxim Integrated LTC3619BEDD#PBF	10-DFN (3x3)	Surface Mount	Positive	5.5 V	5 V	0.6 V	10-WFDFN Exposed Pad	400 mA 800 mA	2	Buck	2.25 MHz	2.5 V	Adjustable	-40 C	125 °C	Step-Down
Analog Devices Inc./Maxim Integrated LTC3619EDD#TRPBF	10-DFN (3x3)	Surface Mount	Positive	5.5 V	5 V	0.6 V	10-WFDFN Exposed Pad	400 mA 800 mA	2	Buck	2.25 MHz	2.5 V	Adjustable	-40 C	125 °C	Step-Down
Analog Devices Inc./Maxim Integrated LTC3619EMSE#TRPBF	10-MSOP-EP	Surface Mount	Positive	5.5 V	5 V	0.6 V	10-MSOP 10-TFSOP Exposed Pad	400 mA 800 mA	2	Buck	2.25 MHz	2.5 V	Adjustable	-40 C	125 °C	Step-Down
Analog Devices Inc./Maxim Integrated LTC3619EMSE#PBF	10-MSOP-EP	Surface Mount	Positive	5.5 V	5 V	0.6 V	10-MSOP 10-TFSOP Exposed Pad	400 mA 800 mA	2	Buck	2.25 MHz	2.5 V	Adjustable	-40 C	125 °C	Step-Down

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	404	$ 8.02	1m+
	Tube	1	$ 8.35	1m+
		10	$ 5.74
		25	$ 5.07
		100	$ 4.31
		250	$ 3.94
		500	$ 3.72
		1000	$ 3.54
		2500	$ 3.40

Description

General part information

LTC3619 Series

The LTC3619 is a dual monolithic synchronous buck regulator using a constant frequency, current mode architecture.The input supply voltage range is 2.5V to 5.5V, making it ideal for Li-Ion and USB powered applications. 100% duty cycle capability provides low dropout operation, extending the run time in battery-operated systems. Low output voltages are supported with the 0.6V feedback reference voltage. Channel 1 and channel 2 can supply 400mA and 800mA output current, respectively.The LTC3619’s programmable average input current limit is ideal for USB applications and for point-of-load power supplies because the LTC3619’s limited input current will still allow its output to deliver high peak load currents without collapsing the input supply. When the sum of both channels’ currents exceeds the input current limit, channel 2 is current limited while channel 1 remains regulated. The operating frequency is internally set at 2.25MHz allowing the use of small surface mount inductors. Internal soft-start reduces in-rush current during start-up. The LTC3619 is available in small MSOP and 3mm × 3mm DFN packages and is also available in a low noise, high efficiency pulse skipping version, LTC3619B.Light Load OperationLTC3619Low Ripple Burst Mode (< 20mVpp), Iq < 50uALTC3619BPulse Skip (<5mVpp)ApplicationsHigh Peak Load Current ApplicationsUSB Powered DevicesSupercapacitor ChargingRadio Transmitters and Other Handheld Devices