Integrated Circuits (ICs)

LTC3403EDD#PBF

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Analog Devices Inc./Maxim Integrated

1.5MHZ, 600MA SYNCHRONOUS STEP-DOWN REGULATOR WITH BYPASS TRANSISTOR

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DocumentsR415 Reliability Data Datasheet

Integrated Circuits (ICs)

LTC3403EDD#PBF

Active

Analog Devices Inc./Maxim Integrated

1.5MHZ, 600MA SYNCHRONOUS STEP-DOWN REGULATOR WITH BYPASS TRANSISTOR

Deep-Dive with AI

DocumentsR415 Reliability Data Datasheet

Specifications Series Pricing Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	LTC3403EDD#PBF

Current - Output	600 mA
Frequency - Switching	1.5 MHz
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
Supplier Device Package	8-DFN (3x3)
Synchronous Rectifier	True
Topology	Buck
Voltage - Input (Max) [Max]	5 V
Voltage - Input (Min) [Min]	2.5 V
Voltage - Output (Max) [Max]	3.5 V
Voltage - Output (Min/Fixed) [Min]	0.3 V

LTC3403 Series

Part	Number of Outputs	Operating Temperature [Max]	Operating Temperature [Min]	Package / Case	Mounting Type	Voltage - Input (Min) [Min]	Output Configuration	Frequency - Switching	Output Type	Synchronous Rectifier	Voltage - Output (Min/Fixed) [Min]	Voltage - Input (Max) [Max]	Supplier Device Package	Current - Output	Voltage - Output (Max) [Max]	Function	Topology
Analog Devices Inc./Maxim Integrated LTC3403EDD#PBF	1	85 C	-40 ¯C	8-WFDFN Exposed Pad	Surface Mount	2.5 V	Positive	1.5 MHz	Adjustable		0.3 V	5 V	8-DFN (3x3)	600 mA	3.5 V	Step-Down	Buck
Analog Devices Inc./Maxim Integrated LTC3403EDD#TRPBF	1	85 C	-40 ¯C	8-WFDFN Exposed Pad	Surface Mount	2.5 V	Positive	1.5 MHz	Adjustable		0.3 V	5 V	8-DFN (3x3)	600 mA	3.5 V	Step-Down	Buck

Pricing

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

Distributor	Package	Quantity	$	Updated

Digikey	N/A	242	$ 8.30	1m+
	Tube	1	$ 8.30	1m+
		10	$ 5.57
		25	$ 4.86
		121	$ 3.97
		363	$ 3.56

Description

General part information

LTC3403 Series

The LTC3403 is a high efficiency monolithic synchronous buck regulator optimized for WCDMA power amplifier applications. The output voltage can be dynamically programmed from 0.3V to 3.5V. At VOUT> 3.6V an internal bypass P-channel MOSFET connects VOUTdirectly to VIN, eliminating power loss through the inductor. Selectable forced continuous mode enables fast VOUTresponse to the controlling input.Supply current is only 20µA in Burst Mode®operation and drops to <1µA in shutdown. The 2.5V to 5V input voltage range makes the LTC3403 ideally suited for single Li-Ion battery-powered applications. 100% duty cycle provides low dropout operation, extending battery life in portable systems.Switching frequency is internally set at 1.5MHz, allowing the use of small surface mount inductors and capacitors. The internal synchronous switch increases efficiency and eliminates the need for an external Schottky diode.The LTC3403 is available in a low profile 8-lead 3mm x 3mm DFN package.ApplicationsWCDMA Cell Phone Power AmplifiersWireless Modems