Inductorless (Charge Pump) DC/DC Converters

Inductorless (Charge Pump) DC/DC Converters

Analog Devices’ family of charge pumps offers the widest selection of simple and compact inductorless dc-to-dc converter designs. These converters can be used to step-up, step-down, or invert an input voltage. By eliminating the inductor, these switched capacitor converters provide a small solution footprint and a simpler design. Furthermore, by incorporating spread spectrum technology on-chip, both input and output noise are significantly reduced.

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Flash Memory Programming

Flash programmable memory is a type of electrically erasable programmable read-only memory (EEPROM) chip that can be used for the transfer and permanent storage of digital data. These are long-term persistent storage computer devices that can be electrically erased and reprogrammed. More sophisticated, highly integrated analog integrated circuits also offer flash memory programming capability. Analog Devices provides a line of electrically erasable, programmable solutions for flash memory programming. These solutions are based on our family of charge pumps, which offer the widest selection of simple and compact inductorless dc-to-dc converter designs.

GaAsFET Bias Generators

Analog Devices provides a full line of charge pump dc-to-dc regulators ideally suited for use as GaAsFET bias generators.

High Voltage Charge Pumps

Analog Devices’ family of high voltage charge pumps offers the widest selection of simple and compact inductorless dc-to-dc converter designs. These converters can be used to step up, step down, or invert an input voltage. Key features include fault protection, low quiescent current, and automatic mode switching to maintain regulation. By eliminating the inductor, these switched capacitor converters provide a small solution footprint and a simpler design.

Regulated Buck-Boost Charge Pumps

Analog Devices’ family of regulated buck/boost charge pumps accept input voltages above, equal to or below the output voltage and can be used to step-up or step-down an input voltage to a regulated output voltage. By eliminating the inductor, these switched capacitor converters offer alternatives to switching regulator topologies, providing a small solution footprint and a simple design. Key features include low quiescent current, multimode operation with automatic mode switching to maintain regulation, I_out up to 500mA, low noise constant frequency operation, Burst Mode^® operation, overtemperature, fault and short-circuit protection.

Regulated Inverting Charge Pumps

Analog Devices’ family of regulated inverting charge pumps are used to invert an input voltage to a regulated output voltage. These are useful for systems with split-rail positive and negative input supplies. By eliminating the inductor, these switched capacitor converters offer alternatives to switching regulator topologies, providing a small solution footprint and a simple design. Key features include low quiescent current, multimode operation with automatic mode switching to maintain regulation, I_out up to 500mA, low noise constant frequency operation, Burst Mode^® operation, overtemperature, fault and short-circuit protection.

Regulated Step-Down Charge Pumps

Analog Devices’ family of regulated step-down charge pumps are used to step-down or buck an input voltage to a lower-level regulated output voltage. Switched capacitor converters offer a small solution footprint and a simpler design than conventional inductive switchers, while providing better efficiency and run cooler than linear regulators. Key features include low quiescent current, multimode operation with automatic mode switching to maintain regulation, I_out up to 500mA, low noise, constant frequency operation, Burst Mode^® operation, overtemperature, fault and short-circuit protection.

Regulated Step-Up Charge Pumps

Analog Devices’ family of regulated step-up charge pumps are used to step-up or boost an input voltage to a higher-level regulated output voltage. By eliminating the inductor, these switched capacitor converters offer a small solution footprint and a simple design than conventional inductive switchers. Key features include low quiescent current, multimode operation with automatic mode switching to maintain regulation, I_out up to 500mA, low noise constant frequency operation, Burst Mode^® operation, overtemperature, fault and short-circuit protection.

Unregulated Doubling/Inverting Charge Pumps

Analog Devices’ family of unregulated doubling/inverting charge pumps are used to either boost/double or invert an input voltage to an unregulated output voltage. By eliminating the inductor, these switched capacitor converters offer a small solution footprint and a simpler design than conventional inductive switchers. Key features include low quiescent current, multimode operation with automatic mode switching to maintain regulation, I_out up to 500mA, low noise constant frequency operation, Burst Mode^® operation, overtemperature, fault and short-circuit protection.