Step-Down (Buck) Regulators

Step-Down (Buck) Regulators

Analog Devices manufactures a broad line of high performance, step-down buck switching regulator ICs and buck switching controller ICs with both synchronous and nonsynchronous switches. These switching voltage regulators offer typical input voltage capability from less than 2 V up to 100 V+, switching frequencies up to 4 MHz, and high efficiency operation up to 96%. With burst mode operation, quiescent currents in the tens of micro-amps level can be attained. This combination of features allows for very small, low profile buck switching regulator circuit implementations with minimum external components.

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µModule Buck Regulators

Analog Devices step-down (buck) µModule^® (micromodule) regulators are complete system-in-package (SiP) power management solutions with integrated dc-to-dc controllers, power transistors, input and output capacitors, compensation components, and inductors within a compact, surface-mount BGA or LGA package. Select products offer additional features such as adjustable current limit, low EMI EN 55022 Class B Compliance, and source and sink current capability. µModule step-down regulators effectively address the needs of engineers facing time and space constraints who need a highly efficient and reliable power management solution.

Buck Regulator Plus LDO

Analog Devices manufactures a broad line of high performance dc-to-dc regulators that combine one or more high performance step-down (buck) switching regulators with one or more linear dropout regulators (LDOs).

Buck Regulators with Digital Power System Management

Analog Devices buck regulators with digital power system management (PSM) provide accurate information about power systems and autonomously control and supervise dozens of voltages with ease. They provide high accuracy programming and telemetry with on-board EEPROM parameters that include voltage and current, sequencing, operating frequency, margining, faults, and temperature. Our devices are supported by LTpowerPlay®, a powerful and intuitive Windows-based development software tool used to configure and interrogate PSM devices. When deployed, PSM devices are seamlessly integrated with existing embedded systems and architectures.

Digitally Programmable Regulators

Analog Devices offers a broad line of digitally programmable regulators that offer output voltages that are on-the-fly adjustable via a digital interface. Our high perfomance digitally programmable regulators range from devices that offer simple adjustment of output voltage via a serial interface, to CPU core power applications controlled by VID or VRM, to full featured digital power management solutions. The most common digital features include a PMBus compliant command set, flexible current/voltage/temperature monitoring, high retention EEPROM with ECC and fault logging, telemetry read-back, and synchronous Polyphase® current sharing. The ability to instantly configure a power system simplifies and speeds up development, prototyping, debugging and troubleshooting, making these digitally programmable regulators ideal for today’s most demanding power-hungry and data-intensive applications.

External Power Switch Buck Controllers

Analog Devices manufactures a broad range of step-down (buck) controllers for virtually any application. These controllers offer wide input voltage ranges, multiple output capability, multiphase operation, and output tracking. Furthermore, they come in voltage-mode and current-mode topologies, offer easy synchronization to external clocks, and possess comprehensive protection features.

High Input Voltage Buck Regulators

While similar to standard monolithic step-down buck converters, Analog Devices’ high input voltage buck family is more specialized for higher input voltage applications that range from 30 V to 100 V. This voltage range simplifies design requirements in demanding automotive and industrial applications where large voltage transients can occur.

Internal Power Switch Buck Regulators

Analog Devices manufactures a broad line of high performance buck switching regulators with both synchronous and nonsynchronous internal switches. These regulators offer typical input voltage capability from 2.25 V up to 30 V, switching frequencies up to 4 MHz, and high efficiency operation up to 96%. This combination of features allows for very small circuit implementation and optimizes battery run time in battery-operated handheld devices.

Micropower Buck Regulators

Analog Devices micropower monolithic step-down (buck) converters are targeted at applications that need to maximize efficiency at very light loads. When in burst mode, this product line provides standby quiescent currents in the tens of microamperes level. Even for the 60 V input buck converters, the standby quiescent current is less than 100 µA.

Multiple Output Buck Regulators

Analog Devices manufactures a broad line of multiple output, step-down switching regulators. Offered in both monolithic and controller versions, they have either synchronous or nonsynchronous configurations. These regulators offer typical input voltage capability from 2.5 V to 36 V, switching frequencies up to 2.25 MHz, and high efficiency operation up to 96%. This combination of features allows very small circuit implementation for multiple outputs and optimizes battery run-time in battery-operated handheld devices.