LT3505IDD#PBF

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Analog Devices

CONV DC-DC 3.6V TO 36V STEP DOWN SINGLE-OUT 0.78V TO 33.84V 1.2A 8-PIN DFN EP TUBE

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DocumentsR530 Reliability Data Datasheet

LT3505IDD#PBF

Active

Analog Devices

CONV DC-DC 3.6V TO 36V STEP DOWN SINGLE-OUT 0.78V TO 33.84V 1.2A 8-PIN DFN EP TUBE

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DocumentsR530 Reliability Data Datasheet

Specifications Pricing Series Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	LT3505IDD#PBF

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]	125 ¯C
Operating Temperature [Min]	-40 °C
Output Configuration	Positive
Output Type	Adjustable
Package / Case	8-WFDFN Exposed Pad
Supplier Device Package	8-DFN (3x3)
Synchronous Rectifier	False
Topology	Buck
Voltage - Input (Max) [Max]	36 V
Voltage - Input (Min) [Min]	3.6 V
Voltage - Output (Max) [Max]	33.84 V
Voltage - Output (Min/Fixed) [Min]	0.78 V

LT3505 Series

1.2A, Step-Down Switching Regulator in 3mm × 3mm DFN

Part	Mounting Type	Function	Output Configuration	Voltage - Output (Max) [Max]	Voltage - Input (Min) [Min]	Number of Outputs	Synchronous Rectifier	Package / Case	Output Type	Topology	Current - Output	Voltage - Output (Min/Fixed) [Min]	Operating Temperature [Min]	Operating Temperature [Max]	Frequency - Switching [Max]	Frequency - Switching [Min]	Supplier Device Package	Voltage - Input (Max) [Max]
Analog Devices LT3505IDD#PBF	Surface Mount	Step-Down	Positive	33.84 V	3.6 V	1		8-WFDFN Exposed Pad	Adjustable	Buck	1.2 A	0.78 V	-40 °C	125 ¯C	3.01 MHz	200 kHz	8-DFN (3x3)	36 V

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	$ 10.04
		10	$ 6.98
		25	$ 6.19
		100	$ 5.31
		250	$ 4.88
		500	$ 4.62
		1000	$ 4.40

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