LTC3440EDD#PBF

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Analog Devices

CONV DC-DC 2.5V TO 5.5V SYNCHRONOUS STEP DOWN/SYNCHRONOUS STEP UP SINGLE-OUT 2.5V TO 5.5V 0.6A 10-PIN DFN EP TUBE

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LTC3440EDD#PBF

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Analog Devices

CONV DC-DC 2.5V TO 5.5V SYNCHRONOUS STEP DOWN/SYNCHRONOUS STEP UP SINGLE-OUT 2.5V TO 5.5V 0.6A 10-PIN DFN EP TUBE

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Specifications Pricing Series Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	LTC3440EDD#PBF

Current - Output	600 mA
Frequency - Switching [Max]	2 MHz
Frequency - Switching [Min]	300 kHz
Function	Step-Up/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	10-WFDFN Exposed Pad
Supplier Device Package	10-DFN (3x3)
Synchronous Rectifier	True
Topology	Buck-Boost
Voltage - Input (Max) [Max]	5.5 V
Voltage - Input (Min) [Min]	2.5 V
Voltage - Output (Max) [Max]	5.5 V
Voltage - Output (Min/Fixed)	2.5 V

LTC3440 Series

Micropower Synchronous Buck-Boost DC/DC Converter

Part	Voltage - Input (Max) [Max]	Output Configuration	Current - Output	Function	Synchronous Rectifier	Number of Outputs	Package / Case	Package / Case [x]	Package / Case [x]	Mounting Type	Topology	Voltage - Input (Min) [Min]	Output Type	Operating Temperature [Max]	Operating Temperature [Min]	Frequency - Switching [Max]	Frequency - Switching [Min]	Supplier Device Package	Voltage - Output (Max) [Max]	Voltage - Output (Min/Fixed)
Analog Devices LTC3440EMS#TRPBF	5.5 V	Positive	600 mA	Step-Up/Step-Down		1	10-MSOP 10-TFSOP	3 mm	0.118 in	Surface Mount	Buck-Boost	2.5 V	Adjustable	85 °C	-40 °C	2 MHz	300 kHz	10-MSOP	5.5 V	2.5 V
Analog Devices LTC3440EDD#PBF	5.5 V	Positive	600 mA	Step-Up/Step-Down		1	10-WFDFN Exposed Pad			Surface Mount	Buck-Boost	2.5 V	Adjustable	85 °C	-40 °C	2 MHz	300 kHz	10-DFN (3x3)	5.5 V	2.5 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
Newark	Each	1	$ 9.08
		10	$ 6.48
		25	$ 5.68
		50	$ 5.04
		100	$ 4.46
		363	$ 4.32

Description

General part information

LTC3440 Series

The LTC3440 is a high efficiency, fixed frequency, Buck-Boost DC/DC converter that operates from input voltages above, below or equal to the output voltage. The topology incorporated in the IC provides a continuous transfer function through all operating modes, making the product ideal for single lithium-ion, multicell alkaline or NiMH applications where the output voltage is within the battery voltage range.The device includes two 0.19Ω N-channel MOSFET switches and two 0.22Ω P-channel switches. Switching frequencies up to 2MHz are programmed with an external resistor and the oscillator can be synchronized to an external clock. Quiescent current is only 25µA in Burst Mode operation, maximizing battery life in portable applications. Burst Mode operation is user controlled and can be enabled by driving the MODE/SYNC pin high. If the MODE/SYNC pin has either a clock or is driven low, then fixed frequency switching is enabled.Other features include a 1µA shutdown, soft-start control, thermal shutdown and current limit. The LTC3440 is available in the 10-pin thermally enhanced MSOP package.Protected by U.S. Patents including 6404251, 6166527.ApplicationsPalmtop ComputersHandheld InstrumentsMP3 PlayersDigital Cameras

Documents

Technical documentation and resources

Datasheet

R415 Reliability Data

Reliability Data

Technical Data Sheet EN

Datasheet