LTC3631EMS8E-3.3#PBF

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Analog Devices

CONV DC-DC 4.5V TO 45V SYNCHRONOUS STEP DOWN SINGLE-OUT 3.3V 0.1A 8-PIN MSOP EP TUBE

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LTC3631EMS8E-3.3#PBF

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Analog Devices

CONV DC-DC 4.5V TO 45V SYNCHRONOUS STEP DOWN SINGLE-OUT 3.3V 0.1A 8-PIN MSOP EP TUBE

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DocumentsR526 Reliability Data Datasheet

Specifications Pricing Series Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	LTC3631EMS8E-3.3#PBF

Current - Output	100 mA
Function	Step-Down
Mounting Type	Surface Mount
Number of Outputs	1
Operating Temperature [Max]	125 ¯C
Operating Temperature [Min]	-40 °C
Output Configuration	Positive or Negative
Output Type	1.81 mOhm
Package / Case	Exposed Pad, 8-TSSOP, 8-MSOP
Package / Case [custom]	0.118 in, 3 mm
Supplier Device Package	8-MSOP-EP
Synchronous Rectifier	True
Topology	Buck
Voltage - Input (Max) [Max]	45 V
Voltage - Input (Min) [Min]	4.5 V
Voltage - Output (Min/Fixed)	3.3 V

LTC3631 Series

High Efficiency, High Voltage 100mA Synchronous Step-Down Converter

Part	Package / Case	Package / Case [custom]	Output Type	Voltage - Output (Min/Fixed)	Operating Temperature [Min]	Operating Temperature [Max]	Current - Output	Voltage - Output (Max) [Max]	Function	Topology	Number of Outputs	Mounting Type	Voltage - Input (Min) [Min]	Supplier Device Package	Output Configuration	Voltage - Input (Max) [Max]	Output Type
Analog Devices LTC3631IMS8E#TRPBF	8-MSOP 8-TSSOP Exposed Pad	0.118 in 3 mm	Adjustable	0.8 V	-40 °C	125 ¯C	100 mA	45 V	Step-Down	Buck	1	Surface Mount	4.5 V	8-MSOP-EP	Positive or Negative	45 V
Analog Devices LTC3631IMS8E-3.3#TRPBF	8-MSOP 8-TSSOP Exposed Pad	0.118 in 3 mm		3.3 V	-40 °C	125 ¯C	100 mA		Step-Down	Buck	1	Surface Mount	4.5 V	8-MSOP-EP	Positive or Negative	45 V	1.81 mOhm
Analog Devices LTC3631IDD-3.3#TRPBF	8-WFDFN Exposed Pad			3.3 V	-40 °C	125 ¯C	100 mA		Step-Down	Buck	1	Surface Mount	4.5 V	8-DFN (3x3)	Positive or Negative	45 V	1.81 mOhm
Analog Devices LTC3631EMS8E#TRPBF	8-MSOP 8-TSSOP Exposed Pad	0.118 in 3 mm	Adjustable	0.8 V	-40 °C	125 ¯C	100 mA	45 V	Step-Down	Buck	1	Surface Mount	4.5 V	8-MSOP-EP	Positive or Negative	45 V
Analog Devices LTC3631IMS8E-5#TRPBF	8-MSOP 8-TSSOP Exposed Pad	0.118 in 3 mm		5 V	-40 °C	125 ¯C	100 mA		Step-Down	Buck	1	Surface Mount	4.5 V	8-MSOP-EP	Positive or Negative	45 V	1.81 mOhm
Analog Devices LTC3631IDD-5#TRPBF	8-WFDFN Exposed Pad			5 V	-40 °C	125 ¯C	100 mA		Step-Down	Buck	1	Surface Mount	4.5 V	8-DFN (3x3)	Positive or Negative	45 V	1.81 mOhm
Analog Devices LTC3631EMS8E-3.3#PBF	8-MSOP 8-TSSOP Exposed Pad	0.118 in 3 mm		3.3 V	-40 °C	125 ¯C	100 mA		Step-Down	Buck	1	Surface Mount	4.5 V	8-MSOP-EP	Positive or Negative	45 V	1.81 mOhm
Analog Devices LTC3631EMS8E-5#TRPBF	8-MSOP 8-TSSOP Exposed Pad	0.118 in 3 mm		5 V	-40 °C	125 ¯C	100 mA		Step-Down	Buck	1	Surface Mount	4.5 V	8-MSOP-EP	Positive or Negative	45 V	1.81 mOhm
Analog Devices LTC3631EDD-5#PBF	8-WFDFN Exposed Pad			5 V	-40 °C	125 ¯C	100 mA		Step-Down	Buck	1	Surface Mount	4.5 V	8-DFN (3x3)	Positive or Negative	45 V	1.81 mOhm

Pricing

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

Distributor	Package	Quantity	$

Digikey	Tube	1	$ 10.22
		10	$ 7.11
		25	$ 6.31
		100	$ 5.41
		250	$ 4.98
		500	$ 4.72
		1000	$ 4.50

Description

General part information

LTC3631 Series

The LTC3631 is a high voltage, high efficiency step-down DC/DC converter with internal high side and synchronous power switches that draws only 12μA typical DC supply current at no load while maintaining output voltage regulation.The LTC3631 can supply up to 100mA load current and features a programmable peak current limit that provides a simple method for optimizing efficiency in lower current applications. The LTC3631’s combination of Burst Mode®operation, integrated power switches, low quiescent current, and programmable peak current limit provides high efficiency over a broad range of load currents.With its wide 4.5V to 45V input range and internal overvoltage monitor capable of protecting the part from 60V surges, the LTC3631 is a robust converter suited for regulating a wide variety of power sources. Additionally, the LTC3631 includes a precise run threshold and a soft-start feature to guarantee that power system start-up is well-controlled in any environment.The LTC3631 is available in the thermally enhanced 3mm × 3mm DFN and MS8E packages.Applications4mA to 20mA Current LoopsIndustrial Control SuppliesDistributed Power SystemsPortable InstrumentsBattery-Operated DevicesAutomotive Power Systems