LT3505EDD#TRPBF

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Analog Devices Inc./Maxim Integrated

1.2A, STEP-DOWN SWITCHING REGULATOR IN 3MM × 3MM DFN

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LT3505EDD#TRPBF

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Analog Devices Inc./Maxim Integrated

1.2A, STEP-DOWN SWITCHING REGULATOR IN 3MM × 3MM DFN

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Description Specifications Series Pricing CAD Documents

Description

General part information

LT3505 Series

The LT3505 is a current mode PWM step-down DC/DC converter with an internal 1.4A power switch. The wide operating input range of 3.6V to 36V (40V maximum) makes the LT3505 ideal for regulating power from a wide variety of sources, including unregulated wall transformers, 24V industrial supplies and automotive batteries. The oscillator can be programmed for high frequency operation allowing the use of tiny, low cost external components or it can be programmed for lower frequency operation to maximize efficiency.Cycle-by-cycle current limit provides protection against shorted outputs and soft-start eliminates input current surge during start-up. The low current (<2µA) shutdown mode provides output disconnect, enabling easy power management in battery-powered systems.ApplicationsAutomotive Battery RegulationIndustrial Control SuppliesWall Transformer RegulationDistributed Supply RegulationBattery-Powered Equipment

Technical Specifications

Parameters and characteristics for this part

Specification	LT3505EDD#TRPBF

Current - Output	1.2 A
Frequency - Switching (Max)	3.01 MHz
Frequency - Switching (Min)	200 kHz
Function	Step-Down
Mounting Type	Surface Mount
Number of Outputs	1
Operating Temperature (Max)	85 °C
Operating Temperature (Min)	-40 °C
Output Configuration	Positive
Output Type	Adjustable
Package / Case	8-WFDFN Exposed Pad
Package Length	3 mm
Package Name	8-DFN
Package Width	3 mm
Synchronous Rectifier	No
Topology	Buck
Voltage - Input (Max)	36 V
Voltage - Input (Min)	3.6 V
Voltage - Output (Max)	33.84 V
Voltage - Output (Min/Fixed)	0.78 V

LT3505 Series

Part	Voltage - Input (Min)	Package Width	Package Name	Package Length	Frequency - Switching (Min)	Frequency - Switching (Max)	Voltage - Input (Max)	Voltage - Output (Min/Fixed)	Output Type	Output Configuration	Number of Outputs	Current - Output	Topology	Operating Temperature (Max)	Operating Temperature (Min)	Mounting Type	Synchronous Rectifier	Voltage - Output (Max)	Package / Case	Function	Package Features
Analog Devices Inc./Maxim Integrated LT3505EDD#TRPBF	3.6 V	3 mm	8-DFN	3 mm	200 kHz	3.01 MHz	36 V	0.78 V	Adjustable	Positive	1	1.2 A	Buck	85 °C	-40 °C	Surface Mount	No	33.84 V	8-WFDFN Exposed Pad	Step-Down
Analog Devices Inc./Maxim Integrated LT3505IMS8E#PBF	3.6 V	3 mm	8-MSOP 8-MSOP-EP 8-TSSOP	0.118 in	200 kHz	3.01 MHz	36 V	0.78 V	Adjustable	Positive	1	1.2 A	Buck	125 °C	-40 °C	Surface Mount	No	33.84 V		Step-Down	Exposed Pad
Analog Devices Inc./Maxim Integrated LT3505EMS8E#PBF	3.6 V	3 mm	8-MSOP 8-MSOP-EP 8-TSSOP	0.118 in	200 kHz	3.01 MHz	36 V	0.78 V	Adjustable	Positive	1	1.2 A	Buck	85 °C	-40 °C	Surface Mount	No	33.84 V		Step-Down	Exposed Pad
Analog Devices Inc./Maxim Integrated LT3505IDD#PBF	3.6 V	3 mm	8-DFN	3 mm	200 kHz	3.01 MHz	36 V	0.78 V	Adjustable	Positive	1	1.2 A	Buck	125 °C	-40 °C	Surface Mount	No	33.84 V	8-WFDFN Exposed Pad	Step-Down
Analog Devices Inc./Maxim Integrated LT3505EMS8E#TRPBF	3.6 V	3 mm	8-MSOP 8-MSOP-EP 8-TSSOP	0.118 in	200 kHz	3.01 MHz	36 V	0.78 V	Adjustable	Positive	1	1.2 A	Buck	85 °C	-40 °C	Surface Mount	No	33.84 V		Step-Down	Exposed Pad
Analog Devices Inc./Maxim Integrated LT3505IMS8E#TRPBF	3.6 V	3 mm	8-MSOP 8-MSOP-EP 8-TSSOP	0.118 in	200 kHz	3.01 MHz	36 V	0.78 V	Adjustable	Positive	1	1.2 A	Buck	125 °C	-40 °C	Surface Mount	No	33.84 V		Step-Down	Exposed Pad
Analog Devices Inc./Maxim Integrated LT3505EDD#PBF	3.6 V	3 mm	8-DFN	3 mm	200 kHz	3.01 MHz	36 V	0.78 V	Adjustable	Positive	1	1.2 A	Buck	85 °C	-40 °C	Surface Mount	No	33.84 V	8-WFDFN Exposed Pad	Step-Down
Analog Devices Inc./Maxim Integrated LT3505IDD#TRPBF	3.6 V	3 mm	8-DFN	3 mm	200 kHz	3.01 MHz	36 V	0.78 V	Adjustable	Positive	1	1.2 A	Buck	125 °C	-40 °C	Surface Mount	No	33.84 V	8-WFDFN Exposed Pad	Step-Down

Pricing

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CAD

3D models and CAD resources for this part

Documents

Technical documentation and resources

R530 Reliability Data

LT3505EDD#TRPBF | Datasheet