LT3686EDD#PBF

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Analog Devices Inc./Maxim Integrated

SWITCHING REGULATOR, 1.2A, DFN-EP-10 ROHS COMPLIANT: YES

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LT3686EDD#PBF

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Analog Devices Inc./Maxim Integrated

SWITCHING REGULATOR, 1.2A, DFN-EP-10 ROHS COMPLIANT: YES

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Description Specifications Series Pricing CAD Documents

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

Technical Specifications

Parameters and characteristics for this part

Specification	LT3686EDD#PBF

Current - Output	1.2 A
Frequency - Switching (Max)	2.5 MHz
Frequency - Switching (Min)	300 kHz
Function	Step-Down
Mounting Type	Surface Mount
Number of Outputs	1
Operating Temperature (Max)	125 °C
Operating Temperature (Min)	-40 °C
Output Configuration	Positive
Output Type	Adjustable
Package / Case	10-WFDFN Exposed Pad
Package Length	3 mm
Package Name	10-DFN
Package Width	3 mm
Synchronous Rectifier	No
Topology	Buck
Voltage - Input (Max)	37 V
Voltage - Input (Min)	3.6 V
Voltage - Output (Max)	37 V
Voltage - Output (Min/Fixed)	0.8 V

LT3686 Series

Part	Mounting Type	Topology	Synchronous Rectifier	Output Type	Voltage - Output (Max)	Current - Output	Number of Outputs	Frequency - Switching (Min)	Frequency - Switching (Max)	Voltage - Input (Max)	Package / Case	Voltage - Input (Min)	Package Length	Package Name	Package Width	Voltage - Output (Min/Fixed)	Output Configuration	Function	Operating Temperature (Min)	Operating Temperature (Max)
Analog Devices Inc./Maxim Integrated LT3686HDD#PBF	Surface Mount	Buck	No	Adjustable	37 V	1.2 A	1	300 kHz	2.5 MHz	37 V	10-WFDFN Exposed Pad	3.6 V	3 mm	10-DFN	3 mm	0.8 V	Positive	Step-Down	-40 °C	150 °C
Analog Devices Inc./Maxim Integrated LT3686EDD#TRPBF	Surface Mount	Buck	No	Adjustable	37 V	1.2 A	1	300 kHz	2.5 MHz	37 V	10-WFDFN Exposed Pad	3.6 V	3 mm	10-DFN	3 mm	0.8 V	Positive	Step-Down	-40 °C	125 °C
Analog Devices Inc./Maxim Integrated LT3686EDD#PBF	Surface Mount	Buck	No	Adjustable	37 V	1.2 A	1	300 kHz	2.5 MHz	37 V	10-WFDFN Exposed Pad	3.6 V	3 mm	10-DFN	3 mm	0.8 V	Positive	Step-Down	-40 °C	125 °C
Analog Devices Inc./Maxim Integrated LT3686IDD#TRPBF	Surface Mount	Buck	No	Adjustable	37 V	1.2 A	1	300 kHz	2.5 MHz	37 V	10-WFDFN Exposed Pad	3.6 V	3 mm	10-DFN	3 mm	0.8 V	Positive	Step-Down	-40 °C	125 °C
Analog Devices Inc./Maxim Integrated LT3686HDD#TRPBF	Surface Mount	Buck	No	Adjustable	37 V	1.2 A	1	300 kHz	2.5 MHz	37 V	10-WFDFN Exposed Pad	3.6 V	3 mm	10-DFN	3 mm	0.8 V	Positive	Step-Down	-40 °C	150 °C
Analog Devices Inc./Maxim Integrated LT3686IDD#PBF	Surface Mount	Buck	No	Adjustable	37 V	1.2 A	1	300 kHz	2.5 MHz	37 V	10-WFDFN Exposed Pad	3.6 V	3 mm	10-DFN	3 mm	0.8 V	Positive	Step-Down	-40 °C	125 °C

Pricing

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

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CAD

3D models and CAD resources for this part

Documents

Technical documentation and resources

R530 Reliability Data

LT3686EDD#PBF | Datasheet