LTC3543EDCB#TRMPBF

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Analog Devices Inc./Maxim Integrated

CONV DC-DC 2.5V TO 5.5V SYNCHRONOUS STEP DOWN SINGLE-OUT 0.6V TO 5.5V 0.6A 6-PIN DFN EP T/R

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LTC3543EDCB#TRMPBF

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Analog Devices Inc./Maxim Integrated

CONV DC-DC 2.5V TO 5.5V SYNCHRONOUS STEP DOWN SINGLE-OUT 0.6V TO 5.5V 0.6A 6-PIN DFN EP T/R

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Description Specifications Series Pricing CAD Documents

Description

General part information

LTC3543 Series

The LTC3543 is a high efficiency monolithic synchronous current mode buck regulator.The switching frequency is internally set at 2.25MHz, allowing the use of small surface mount inductors and capacitors. In PLL mode, the LTC3543 can acquire frequencies between 1MHz and 3MHz. Also, the LTC3543 has spread spectrum capability providing a lower noise regulated output, as well as low noise at the input.In Burst Mode®operation, the supply current is only 45µA, dropping to <1µA in shutdown. The 2.5V to 5.5V input voltage range makes the LTC3543 ideally suited for single Li-Ion battery-powered applications. The 100% duty cycle provides a low dropout operation, extending the battery life in portable systems. Burst Mode operation increases efficiency at light loads, further extending battery life. The internal synchronous switch increases efficiency and eliminates the need for an external Schottky diode.ApplicationsPortable InstrumentsCellular Phones

Technical Specifications

Parameters and characteristics for this part

Specification	LTC3543EDCB#TRMPBF

Current - Output	600 mA
Frequency - Switching	2.25 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	6-WFDFN Exposed Pad
Package Length	2 mm
Package Name	6-DFN
Package Width	3 mm
Synchronous Rectifier	Yes
Topology	Buck
Voltage - Input (Max)	5.5 V
Voltage - Input (Min)	2.5 V
Voltage - Output (Max)	5.5 V
Voltage - Output (Min/Fixed)	0.6 V

LTC3543 Series

600mA Synchronous Step Down Buck Regulator with PLL, Soft-Start and Spread Spectrum

Part	Mounting Type	Package Width	Package Name	Package Length	Output Configuration	Voltage - Output (Min/Fixed)	Output Type	Voltage - Input (Max)	Function	Voltage - Input (Min)	Number of Outputs	Package / Case	Voltage - Output (Max)	Current - Output	Topology	Operating Temperature (Max)	Operating Temperature (Min)	Synchronous Rectifier	Frequency - Switching
Analog Devices Inc./Maxim Integrated LTC3543EDCB#TRPBF	Surface Mount	3 mm	6-DFN	2 mm	Positive	0.6 V	Adjustable	5.5 V	Step-Down	2.5 V	1	6-WFDFN Exposed Pad	5.5 V	600 mA	Buck	85 °C	-40 °C	Yes	2.25 MHz
Analog Devices Inc./Maxim Integrated LTC3543EDCB#TRMPBF	Surface Mount	3 mm	6-DFN	2 mm	Positive	0.6 V	Adjustable	5.5 V	Step-Down	2.5 V	1	6-WFDFN Exposed Pad	5.5 V	600 mA	Buck	85 °C	-40 °C	Yes	2.25 MHz

Pricing

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CAD

3D models and CAD resources for this part

Documents

Technical documentation and resources

R415 Reliability Data

LTC3543EDCB#TRMPBF | Datasheet