LTC3539LTC3539-2 Series

2A, 1MHz/2MHz Synchronous Step-Up DC/DC Converters

Catalog

2A, 1MHz/2MHz Synchronous Step-Up DC/DC Converters

Part	Current - Output	Topology	Voltage - Input (Min) [Min]	Frequency - Switching	Output Type	Voltage - Output (Max) [Max]	Voltage - Input (Max) [Max]	Output Configuration	Number of Outputs	Function	Operating Temperature [Max]	Operating Temperature [Min]	Mounting Type	Supplier Device Package	Voltage - Output (Min/Fixed)	Package / Case
Analog Devices LTC3539EDCB	2 A	Boost	0.5 V	1 MHz	Adjustable	5.25 V	5 V	Positive	1	Step-Up	85 °C	-40 °C	Surface Mount	8-DFN (2x3)	1.5 V	8-WFDFN Exposed Pad
Analog Devices LTC3539EDCB#TRMPBF	2 A	Boost	0.5 V	1 MHz	Adjustable	5.25 V	5 V	Positive	1	Step-Up	85 °C	-40 °C	Surface Mount	8-DFN (2x3)	1.5 V	8-WFDFN Exposed Pad
Analog Devices LTC3539EDCB#TRPBF	2 A	Boost	0.5 V	1 MHz	Adjustable	5.25 V	5 V	Positive	1	Step-Up	85 °C	-40 °C	Surface Mount	8-DFN (2x3)	1.5 V	8-WFDFN Exposed Pad
Analog Devices LTC3539EDCB-2#TRPBF	2 A	Boost	0.5 V	2 MHz	Adjustable	5.25 V	5 V	Positive	1	Step-Up	85 °C	-40 °C	Surface Mount	8-DFN (2x3)	1.5 V	8-WFDFN Exposed Pad
Analog Devices LTC3539EDCB-2	2 A	Boost	0.5 V	2 MHz	Adjustable	5.25 V	5 V	Positive	1	Step-Up	85 °C	-40 °C	Surface Mount	8-DFN (2x3)	1.5 V	8-WFDFN Exposed Pad
Analog Devices LTC3539EDCB-2#TRMPBF	2 A	Boost	0.5 V	2 MHz	Adjustable	5.25 V	5 V	Positive	1	Step-Up	85 °C	-40 °C	Surface Mount	8-DFN (2x3)	1.5 V	8-WFDFN Exposed Pad

Catalog

2A, 1MHz/2MHz Synchronous Step-Up DC/DC Converters

Key Features

• Delivers 3.3V at 900mA From 2 Alkaline/NiMH Cells

• Delivers 5V at 900mA From a Lithium-Polymer Battery

• VINStart-Up Voltage: 700mV

• 1.5V to 5.25V VOUTRange

• Up to 94% Efficiency

• VIN> VOUTOperation

• ±1.5% Feedback Voltage Tolerance

• 1MHz (LTC3539) or 2MHz (LTC3539-2) Fixed Frequency Operation

• Output Disconnect

• Selectable Burst Mode®or PWM Operation

• 10μA Quiescent Current

• Logic Controlled Shutdown: <1μA

• Requires Only 6 External Components

• Low Profile (2mm × 3mm × 0.75mm) DFN Package

Description

The LTC3539/LTC3539-2 are synchronous, 2A step-up DC/DC converters with output disconnect. Synchronous rectification enables high efficiency in the low profile 2mm × 3mm DFN package. Battery life is extended with a 700mV start-up voltage and operation down to 500mV once started.A switching frequency of 1MHz (LTC3539) or 2MHz (LTC3539-2) minimizes solution footprint by allowing the use of tiny, low profile inductors and ceramic capacitors. The current mode PWM design is internally compensated, reducing external parts count. The LTC3539/LTC3539-2 feature a pin-enabled automatic Burst Mode operation at light load conditions. Anti-ring circuitry reduces EMI by damping the inductor in discontinuous mode. Additional features include a low shutdown current of under 1μA and thermal overload protection.The LTC3539/LTC3539-2 are offered in a 2mm × 3mm × 0.75mm DFN package.ApplicationsMedical InstrumentsPortable Bar Code ScannersNoise Canceling HeadphonesPortable GPS NavigationHandheld PCs