Integrated Circuits (ICs)

LTC3638HMSE#PBF

Active

Analog Devices Inc./Maxim Integrated

HIGH EFFICIENCY, 140V 250MA STEP-DOWN REGULATOR

Integrated Circuits (ICs)

LTC3638HMSE#PBF

Active

Analog Devices Inc./Maxim Integrated

HIGH EFFICIENCY, 140V 250MA STEP-DOWN REGULATOR

Specifications Series Pricing CAD Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	LTC3638HMSE#PBF

Current - Output	250 mA
Function	Step-Down
Mounting Type	Surface Mount
Number of Outputs	1
Operating Temperature (Max)	150 °C
Operating Temperature (Min)	-40 °C
Output Configuration	Positive
Output Type	Adjustable
Package Features	12 Leads, Exposed Pad
Package Length	0.118 in
Package Name	16-MSOP-EP, 16-TFSOP
Package Width	3 mm
Synchronous Rectifier	No
Topology	Buck
Voltage - Input (Max)	140 V
Voltage - Input (Min)	4 V
Voltage - Output (Max)	140 V
Voltage - Output (Min/Fixed)	0.8 V

LTC3638 Series

Part	Number of Outputs	Voltage - Output (Max)	Output Configuration	Mounting Type	Topology	Current - Output	Output Type	Voltage - Input (Max)	Package Name	Function	Package Width	Package Features	Package Length	Operating Temperature (Min)	Operating Temperature (Max)	Voltage - Output (Min/Fixed)	Synchronous Rectifier	Voltage - Input (Min)
Analog Devices Inc./Maxim Integrated LTC3638HMSE#TRPBF	1	140 V	Positive	Surface Mount	Buck	250 mA	Adjustable	140 V	16-MSOP-EP 16-TFSOP	Step-Down	3 mm	12 Leads Exposed Pad	0.118 in	-40 °C	150 °C	0.8 V	No	4 V
Analog Devices Inc./Maxim Integrated LTC3638EMSE#TRPBF	1	140 V	Positive	Surface Mount	Buck	250 mA	Adjustable	140 V	16-MSOP-EP 16-TFSOP	Step-Down	3 mm	12 Leads Exposed Pad	0.118 in	-40 °C	125 °C	0.8 V	No	4 V
Analog Devices Inc./Maxim Integrated LTC3638MPMSE#PBF	1	140 V	Positive	Surface Mount	Buck	250 mA	Adjustable	140 V	16-MSOP-EP 16-TFSOP	Step-Down	3 mm	12 Leads Exposed Pad	0.118 in	-55 °C	150 °C	0.8 V	No	4 V
Analog Devices Inc./Maxim Integrated LTC3638MPMSE#TRPBF	1	140 V	Positive	Surface Mount	Buck	250 mA	Adjustable	140 V	16-MSOP-EP 16-TFSOP	Step-Down	3 mm	12 Leads Exposed Pad	0.118 in	-55 °C	150 °C	0.8 V	No	4 V
Analog Devices Inc./Maxim Integrated LTC3638IMSE#TRPBF	1	140 V	Positive	Surface Mount	Buck	250 mA	Adjustable	140 V	16-MSOP-EP 16-TFSOP	Step-Down	3 mm	12 Leads Exposed Pad	0.118 in	-40 °C	125 °C	0.8 V	No	4 V
Analog Devices Inc./Maxim Integrated LTC3638HMSE#PBF	1	140 V	Positive	Surface Mount	Buck	250 mA	Adjustable	140 V	16-MSOP-EP 16-TFSOP	Step-Down	3 mm	12 Leads Exposed Pad	0.118 in	-40 °C	150 °C	0.8 V	No	4 V
Analog Devices Inc./Maxim Integrated LTC3638EMSE#PBF	1	140 V	Positive	Surface Mount	Buck	250 mA	Adjustable	140 V	16-MSOP-EP 16-TFSOP	Step-Down	3 mm	12 Leads Exposed Pad	0.118 in	-40 °C	125 °C	0.8 V	No	4 V
Analog Devices Inc./Maxim Integrated LTC3638IMSE#PBF	1	140 V	Positive	Surface Mount	Buck	250 mA	Adjustable	140 V	16-MSOP-EP 16-TFSOP	Step-Down	3 mm	12 Leads Exposed Pad	0.118 in	-40 °C	125 °C	0.8 V	No	4 V

Pricing

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

Distributor	Package	Quantity	$	Updated

Digikey	Tube	1	$ 13.31	1w
		10	$ 10.48
		37	$ 9.51
		111	$ 8.94
		259	$ 8.60
		518	$ 8.38
		1036	$ 8.20

CAD

3D models and CAD resources for this part

Description

General part information

LTC3638 Series

The LTC3638 is a high efficiency step-down DC/DC regulator with internal power switch that draws only 12μA typical DC supply current while maintaining a regulated output voltage at no load.The LTC3638 can supply up to 250mA load current and features a programmable peak current limit that provides a simple method for optimizing efficiency and for reducing output ripple and component size. The LTC3638’s combination of Burst Mode®operation, integrated power switch, low quiescent current, and programmable peak current limit provides high efficiency over a broad range of load currents.With its wide input range of 4V to 140V and programmable overvoltage lockout, the LTC3638 is a robust regulator suited for regulating from a wide variety of power sources. Additionally, the LTC3638 includes a precise run threshold and soft-start feature to guarantee that the power system start-up is well-controlled in any environment. A feedback comparator output enables multiple LTC3638s to be connected in parallel for higher current applications.The LTC3638 is available in a thermally enhanced high voltage-capable 16-lead MSE package with four missing pins.ApplicationsIndustrial Control SuppliesMedical DevicesDistributed Power SystemsPortable InstrumentsBattery-Operated DevicesAvionicsAutomotive

Documents

Technical documentation and resources

R526 Reliability Data

LTC3638HMSE#PBF | Datasheet