Integrated Circuits (ICs)

LT3686HDD#PBF

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Analog Devices Inc./Maxim Integrated

37V/1.2A STEP-DOWN REGULATOR IN 3MM × 3MM DFN

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DocumentsR530 Reliability Data Datasheet

Integrated Circuits (ICs)

LT3686HDD#PBF

Active

Analog Devices Inc./Maxim Integrated

37V/1.2A STEP-DOWN REGULATOR IN 3MM × 3MM DFN

Deep-Dive with AI

DocumentsR530 Reliability Data Datasheet

Specifications Series Pricing Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	LT3686HDD#PBF

Current - Output	1.2 A
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 / Case	10-WFDFN Exposed Pad
Supplier Device Package	10-DFN (3x3)
Synchronous Rectifier	False
Topology	Buck
Voltage - Input (Max) [Max]	37 V
Voltage - Input (Min) [Min]	3.6 V
Voltage - Output (Max) [Max]	37 V
Voltage - Output (Min/Fixed)	0.8 V

LT3686 Series

Part	Operating Temperature [Min]	Operating Temperature [Max]	Function	Output Configuration	Voltage - Output (Min/Fixed)	Supplier Device Package	Voltage - Input (Min) [Min]	Package / Case	Voltage - Input (Max) [Max]	Number of Outputs	Current - Output	Voltage - Output (Max) [Max]	Output Type	Topology	Mounting Type
Analog Devices Inc./Maxim Integrated LT3686HDD#PBF	-40 °C	150 °C	Step-Down	Positive	0.8 V	10-DFN (3x3)	3.6 V	10-WFDFN Exposed Pad	37 V	1	1.2 A	37 V	Adjustable	Buck	Surface Mount
Analog Devices Inc./Maxim Integrated LT3686EDD#TRPBF	-40 C	125 °C	Step-Down	Positive	0.8 V	10-DFN (3x3)	3.6 V	10-WFDFN Exposed Pad	37 V	1	1.2 A	37 V	Adjustable	Buck	Surface Mount
Analog Devices Inc./Maxim Integrated LT3686EDD#PBF	-40 C	125 °C	Step-Down	Positive	0.8 V	10-DFN (3x3)	3.6 V	10-WFDFN Exposed Pad	37 V	1	1.2 A	37 V	Adjustable	Buck	Surface Mount
Analog Devices Inc./Maxim Integrated LT3686IDD#TRPBF	-40 C	125 °C	Step-Down	Positive	0.8 V	10-DFN (3x3)	3.6 V	10-WFDFN Exposed Pad	37 V	1	1.2 A	37 V	Adjustable	Buck	Surface Mount
Analog Devices Inc./Maxim Integrated LT3686HDD#TRPBF	-40 °C	150 °C	Step-Down	Positive	0.8 V	10-DFN (3x3)	3.6 V	10-WFDFN Exposed Pad	37 V	1	1.2 A	37 V	Adjustable	Buck	Surface Mount
Analog Devices Inc./Maxim Integrated LT3686IDD#PBF	-40 C	125 °C	Step-Down	Positive	0.8 V	10-DFN (3x3)	3.6 V	10-WFDFN Exposed Pad	37 V	1	1.2 A	37 V	Adjustable	Buck	Surface Mount

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	127	$ 9.95	1m+
	Tube	1	$ 10.44	1m+
		10	$ 7.28
		25	$ 6.46
		100	$ 5.55
		250	$ 5.11
		500	$ 4.84
		1000	$ 4.61

Description

General part information

LT3686 Series

The LT3686 is a current mode PWM step-down DC/DC converter with an internal 1.2A power switch, packaged in 10-lead 3mm × 3mm DFN. The wide input range of 3.6V to 37V makes the LT3686 suitable for regulating power from a wide variety of sources, including 24V industrial supplies and automotive batteries. Its high maximum frequency allows the use of tiny inductors and capacitors, resulting in a very small solution. Operating frequency above the AM band avoids interfering with radio reception, making the LT3686 particularly suitable for automotive applications.Cycle-by-cycle current limit and DA current sense provide protection against fault conditions. Soft-start and frequency foldback eliminate input current surge during start-up. An optional internal regulated active load at the output via the BD pin keeps the LT3686 at full switching frequency at light loads, resulting in low, predictable output ripple above the audio and AM bands. Internal compensation and an internal boost diode reduce external component count.Overvoltage ProtectionsFeaturesLT368655V-LT3686A60VExternal SynchronizationApplicationsAutomotive SystemsBattery-Powered EquipmentWall Transformer RegulationDistributed Supply Regulation