LTC3532 Series

Micropower Synchronous Buck-Boost DC/DC Converter

Catalog

Micropower Synchronous Buck-Boost DC/DC Converter

Part	Supplier Device Package	Current - Output	Topology	Voltage - Input (Min) [Min]	Frequency - Switching [Max]	Frequency - Switching [Min]	Function	Output Type	Output Configuration	Voltage - Input (Max) [Max]	Mounting Type	Voltage - Output (Max) [Max]	Voltage - Output (Min/Fixed)	Number of Outputs	Operating Temperature [Max]	Operating Temperature [Min]	Package / Case	Package / Case [x]	Package / Case [x]
Analog Devices LTC3532EDD#TRPBF	10-DFN (3x3)	500 mA	Buck-Boost	2.4 V	2 MHz	300 kHz	Step-Up/Step-Down	Adjustable	Positive	5.5 V	Surface Mount	5.25 V	2.4 V	1	85 °C	-40 °C	10-WFDFN Exposed Pad
Analog Devices LTC3532EMS#PBF	10-MSOP	500 mA	Buck-Boost	2.4 V	2 MHz	300 kHz	Step-Up/Step-Down	Adjustable	Positive	5.5 V	Surface Mount	5.25 V	2.4 V	1	85 °C	-40 °C	10-MSOP 10-TFSOP	3 mm	0.118 in
Analog Devices LTC3532EDD#PBF	10-DFN (3x3)	500 mA	Buck-Boost	2.4 V	2 MHz	300 kHz	Step-Up/Step-Down	Adjustable	Positive	5.5 V	Surface Mount	5.25 V	2.4 V	1	85 °C	-40 °C	10-WFDFN Exposed Pad
Analog Devices LTC3532EMS#TRPBF	10-MSOP	500 mA	Buck-Boost	2.4 V	2 MHz	300 kHz	Step-Up/Step-Down	Adjustable	Positive	5.5 V	Surface Mount	5.25 V	2.4 V	1	85 °C	-40 °C	10-MSOP 10-TFSOP	3 mm	0.118 in

Catalog

Micropower Synchronous Buck-Boost DC/DC Converter

Key Features

• Single Inductor

• Regulated Output with Input Voltages Above, Below or Equal to the Output

• Wide VINRange: 2.4V to 5.5V

• VOUTRange: 2.4V to 5.25V

• Up to 500mA Peak Output Current

• Synchronous Rectification: Up to 95% Efficiency

• Manual or Programmable Automatic Burst Mode®Operation

• Output Disconnect in Shutdown

• Programmable Oscillator: 300kHz to 2MHz

• Pin Compatible with LTC3440

• Small Thermally Enhanced 10-Lead (3mm × 3mm)

• DFN and 10-Lead MSOP Packages

Description

The LTC3532 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 0.36Ω N-channel MOSFET switches and two 0.42Ω P-channel switches. Switching frequencies up to 2MHz are programmed with an external resistor. Quiescent current is only 35μA in Burst Mode operation, maximizing battery life in portable applications. Automatic Burst Mode operation allows the user to program the load current for Burst Mode operation or to control it manually.Other features include a 1μA shutdown, soft-start control, thermal shutdown, and peak current limit. The LTC3532 is available in a low profile (0.75mm) 10-lead (3mm × 3mm) DFN and 10-lead MSOP packages.ApplicationsMiniature Hard Disk Drive Power SupplyMP3 PlayersHandheld InstrumentsDigital CamerasHandheld Terminals