LTC3547EDDB#TRPBF

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Analog Devices

DUAL MONOLITHIC 300MA SYNCHRONOUS STEP-DOWN REGULATOR

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DocumentsR415 Reliability Data Datasheet +2

LTC3547EDDB#TRPBF

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Analog Devices

DUAL MONOLITHIC 300MA SYNCHRONOUS STEP-DOWN REGULATOR

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DocumentsR415 Reliability Data Datasheet +2

Specifications Pricing Series Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	LTC3547EDDB#TRPBF

Current - Output	300 mA
Frequency - Switching	2.25 MHz
Function	Step-Down
Mounting Type	Surface Mount
Number of Outputs	2
Operating Temperature [Max]	85 °C
Operating Temperature [Min]	-40 °C
Output Configuration	Positive
Output Type	Adjustable
Package / Case	8-WFDFN Exposed Pad
Supplier Device Package	8-DFN (3x2)
Synchronous Rectifier	True
Topology	Buck
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)	0.6 V

LTC3547B Series

Dual Monolithic 300mA Synchronous Step-Down Regulator

Part	Voltage - Input (Min) [Min]	Function	Topology	Voltage - Input (Max) [Max]	Output Type	Package / Case	Voltage - Output (Min/Fixed)	Supplier Device Package	Frequency - Switching	Current - Output	Operating Temperature [Max]	Operating Temperature [Min]	Mounting Type	Number of Outputs	Output Configuration	Voltage - Output (Max) [Max]	Output Type
Analog Devices LTC3547EDDB-1#TRPBF	2.5 V	Step-Down	Buck	5.5 V	1.81 mOhm	8-WFDFN Exposed Pad	1.2 V 1.8 V	8-DFN (3x2)	2.25 MHz	300 mA	85 °C	-40 °C	Surface Mount	2	Positive
Analog Devices LTC3547BEDDB-1#TRMPBF	2.5 V	Step-Down	Buck	5.5 V	1.81 mOhm	8-WFDFN Exposed Pad	1.2 V 1.8 V	8-DFN (3x2)	2.25 MHz	300 mA	85 °C	-40 °C	Surface Mount	2	Positive
Analog Devices LTC3547EDDB#TRMPBF	2.5 V	Step-Down	Buck	5.5 V		8-WFDFN Exposed Pad	0.6 V	8-DFN (3x2)	2.25 MHz	300 mA	85 °C	-40 °C	Surface Mount	2	Positive	5.5 V	Adjustable
Analog Devices LTC3547EDDB#TRPBF	2.5 V	Step-Down	Buck	5.5 V		8-WFDFN Exposed Pad	0.6 V	8-DFN (3x2)	2.25 MHz	300 mA	85 °C	-40 °C	Surface Mount	2	Positive	5.5 V	Adjustable
Analog Devices LTC3547BEDDB#TRMPBF	2.5 V	Step-Down	Buck	5.5 V		8-WFDFN Exposed Pad	0.6 V	8-DFN (3x2)	2.25 MHz	300 mA	85 °C	-40 °C	Surface Mount	2	Positive	5.5 V	Adjustable
Analog Devices LTC3547EDDB-1#TRMPBF	2.5 V	Step-Down	Buck	5.5 V	1.81 mOhm	8-WFDFN Exposed Pad	1.2 V 1.8 V	8-DFN (3x2)	2.25 MHz	300 mA	85 °C	-40 °C	Surface Mount	2	Positive
Analog Devices LTC3547BEDDB-1#TRPBF	2.5 V	Step-Down	Buck	5.5 V	1.81 mOhm	8-WFDFN Exposed Pad	1.2 V 1.8 V	8-DFN (3x2)	2.25 MHz	300 mA	85 °C	-40 °C	Surface Mount	2	Positive

Pricing

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

Distributor	Package	Quantity	$

Digikey	Cut Tape (CT)	1	$ 7.47
		10	$ 5.10
		25	$ 4.49
		100	$ 3.80
		250	$ 3.47
		500	$ 3.26
		1000	$ 3.10
	Digi-Reel®	1	$ 7.47
		10	$ 5.10
		25	$ 4.49
		100	$ 3.80
		250	$ 3.47
		500	$ 3.26
		1000	$ 3.10
	Tape & Reel (TR)	2500	$ 2.94

Description

General part information

LTC3547B Series

The LTC3547 is a dual, 2.25MHz, constant-frequency, synchronous step-down DC/DC converter in a tiny 3mm × 2mm DFN package. 100% duty cycle provides low dropout operation, extending battery life in portable systems. Low output voltages are supported with the 0.6V feedback reference voltage. Each regulator can supply 300mA continuous output current.The input voltage range is 2.5V to 5.5V, making it ideal for Li-Ion and USB powered applications. Supply current during operation is only 40µA and drops to < 1µA in shutdown. Automatic Burst Mode®operation increases efficiency at light loads, further extending battery life.An internally set 2.25MHz switching frequency allows the use of tiny surface mount inductors and capacitors. Internal soft-start reduces inrush current during startup. All outputs are internally compensated to work with ceramic capacitors. The LTC3547 is available in a low profile (0.75mm) 3mm × 2mm DFN package.The LTC3547is also available in a fixed output voltage configuration,eliminating the need for the external feedback networksApplicationsCellular TelephonesDigital Still CamerasWireless and DSL ModemsPDAs/Palmtop PCsPortable Media Players

LTC3547EDDB#TRPBF

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LTC3547EDDB#TRPBF

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Technical Specifications

LTC3547B Series

Pricing

Description

LTC3547B Series

Documents

R415 Reliability Data

Datasheet

Tape and Reel Packaging

LTpowerPlanner III Quick Start Guide

LTC3547B Series