Convertisseurs DC-DC
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LTC3114EFE#PBF - 40V, 1A Sync Buck-Boost DC/DC | Analog Devices
The LTC3114EFE#PBF is a versatile, wide operating voltage range synchronous monolithic buck-boost DC/DC converter with programmable average output current, manufactured by Analog Devices. It operates from an input voltage range of 2.2V to 40V and provides an adjustable output voltage from 2.7V to 40V, delivering up to 1A of output current. The device is housed in a 16-lead TSSOP package with an exposed pad (0.173", 4.40mm width), suitable for compact power management designs. A buck-boost converter is a type of DC-DC switching regulator that can step up or step down an input voltage to produce a regulated output voltage, regardless of whether the input is higher or lower than the output. This makes it ideal for battery-powered applications where the battery voltage may vary above and below the desired rail. The LTC3114-1's proprietary buck-boost PWM control circuitry delivers low noise operation across the entire operating voltage range, ensuring clean power delivery. Key features include a wide input voltage range of 2.2V to 40V, adjustable output from 2.7V to 40V, 1A continuous output current, and programmable average output current limit. The synchronous rectification provides high efficiency, and the low noise PWM control minimizes output ripple. The device also includes internal compensation, soft-start, and thermal shutdown protection. Technically, the LTC3114-1 uses a current-mode, fixed-frequency PWM architecture that seamlessly transitions between buck and boost modes, maintaining regulation without output glitches. The programmable average output current feature allows designers to set a precise current limit, protecting the load and source. The exposed pad enhances thermal performance, allowing higher power dissipation in a small footprint. Typical applications include automotive power supplies, industrial instrumentation, portable devices, and battery-powered systems where a stable rail is needed from a varying input source. The wide input range makes it suitable for 12V and 24V industrial buses, as well as multi-cell Li-ion battery stacks. When designing with this device, ensure proper PCB layout with short, low-inductance paths for the switching nodes and adequate input/output capacitance to minimize voltage ripple. The exposed pad should be soldered to a large copper area for effective heat dissipation.
LTC3114EFE#TRPBF - 40V, 1A Sync Buck-Boost DC/DC | Analog Devices
The LTC3114EFE#TRPBF is a versatile, wide operating voltage range synchronous monolithic buck-boost DC/DC converter with programmable average output current. It operates from an input voltage range of 2.2V to 40V and provides a regulated output from 2.7V to 40V at up to 1A of continuous output current. The device is housed in a 16-pin TSSOP with exposed pad (HTSSOP) package, making it suitable for space-constrained applications. A buck-boost DC/DC converter is a type of switching regulator that can step up or step down an input voltage to produce a regulated output voltage, regardless of whether the input is higher or lower than the output. This is achieved by combining buck (step-down) and boost (step-up) topologies in a single converter. The LTC3114-1 uses a proprietary buck-boost PWM control architecture that delivers low noise operation across the entire operating voltage range, with current mode control ensuring exceptional line and load transient responses. Key features of the LTC3114EFE#TRPBF include a wide 2.2V to 40V input range, programmable average output current up to 1A, and a synchronous rectifier design that eliminates the need for an external Schottky diode, improving efficiency. The device also features a power good indicator, soft-start, and thermal shutdown protection. The output voltage is adjustable via an external resistor divider, and the switching frequency is programmable from 400kHz to 2MHz, allowing optimization between efficiency and component size. The LTC3114-1 is designed for applications requiring a regulated output from a varying input source, such as battery-powered systems, automotive electronics, and industrial equipment. Its wide input range makes it ideal for 12V and 24V bus systems, while its low noise operation is suitable for noise-sensitive analog and RF circuits. The device is available in a 16-lead TSSOP package with exposed pad for enhanced thermal performance. When designing with the LTC3114EFE#TRPBF, it is important to select the appropriate external inductor and capacitors based on the desired switching frequency and output ripple requirements. The exposed pad should be soldered to a large copper area for proper heat dissipation. The programmable average output current feature allows the designer to set a current limit, which can be useful for battery charging or LED driving applications.
LTC3114IDE#PBF - 40V, 1A Buck-Boost DC/DC | Analog Devices
The LTC3114IDE#PBF is a versatile, wide operating voltage range synchronous monolithic buck-boost DC/DC converter from Analog Devices. It delivers up to 1A of output current with a programmable average output current feature, making it ideal for applications where the input voltage can be above, below, or equal to the output voltage. The device operates from a 2.2V to 40V input range and provides an adjustable output from 2.7V up to 40V, with a 1.2MHz switching frequency for low noise operation. A buck-boost converter is a type of DC-DC converter that can step up or step down an input voltage to produce a regulated output voltage. Unlike a buck converter that only steps down or a boost converter that only steps up, a buck-boost converter is essential in battery-powered systems where the battery voltage can vary above and below the desired output rail. The LTC3114-1 uses a proprietary buck-boost PWM control scheme that ensures seamless transitions between buck and boost modes, maintaining low output ripple and high efficiency across the entire input range. Key features of the LTC3114IDE#PBF include up to 96% efficiency, a low 30µA no-load quiescent current in Burst Mode operation, and current-mode control for fast transient response. The programmable average output current allows the designer to set a current limit, protecting the converter and the load. The device is available in a 16-lead TSSOP package with an exposed pad (FE package), which aids in thermal dissipation. The operating temperature range is -40°C to +125°C, making it suitable for industrial and automotive environments. The LTC3114-1 integrates synchronous switches, eliminating the need for an external Schottky diode, which reduces component count and improves efficiency. The current-mode architecture provides excellent line and load regulation, while the 1.2MHz switching frequency allows the use of small, low-profile inductors and capacitors, saving PCB area. The device also includes soft-start, overcurrent protection, and thermal shutdown for robust operation. Typical applications include portable instruments, industrial sensors, battery-powered equipment, and power supplies for FPGAs and microcontrollers where the input voltage can vary widely. The wide input range and high efficiency make it an excellent choice for systems powered by multi-cell batteries or unregulated power sources. When designing with the LTC3114IDE#PBF, ensure proper PCB layout with short, low-impedance connections for the input, output, and ground paths. Use a 10µH inductor and appropriate input/output capacitors as recommended in the datasheet to achieve optimal performance. The exposed pad should be soldered to a large copper area for effective heat sinking.
LTC3114IDE#TRPBF - 40V, 1A Buck-Boost DC/DC | Analog Devices
The LTC3114IDE#TRPBF is a versatile, wide operating voltage range synchronous monolithic buck-boost DC/DC converter with programmable average output current from Analog Devices. It delivers up to 1A output current from a 2.7V to 40V input range, making it ideal for applications with varying input sources such as batteries, solar panels, and industrial power rails. The device is available in a 16-lead TSSOP package with exposed pad (TSSOP-16-EP), providing excellent thermal performance for compact designs. A buck-boost converter is a type of DC-DC converter that can step up or step down an input voltage to produce a regulated output voltage, regardless of whether the input is higher or lower than the output. This is achieved through a combination of buck (step-down) and boost (step-up) topologies, typically using an inductor, switches, and control circuitry. The LTC3114-1 belongs to the family of switching regulators, which are essential in power management systems for efficiently converting and regulating voltage levels in portable, industrial, and automotive electronics. Key features of the LTC3114IDE#TRPBF include a wide 2.7V to 40V input voltage range, an adjustable output voltage from 2.2V to 40V, and a programmable average output current limit. The proprietary buck-boost PWM control circuitry delivers low noise operation across the entire operating range, ensuring stable and clean power delivery. The device also features a low quiescent current, making it suitable for battery-powered applications where efficiency is critical. Technically, the LTC3114-1 uses a synchronous rectification architecture with internal power switches, eliminating the need for external diodes and improving efficiency. The programmable output current feature allows designers to set the maximum output current via an external resistor, providing flexibility for various load requirements. The device also includes soft-start, overcurrent protection, and thermal shutdown to ensure reliable operation under fault conditions. Typical applications include battery-powered systems, industrial sensors, portable instruments, and power supply designs where the input voltage can vary above or below the output. The wide input range and high efficiency make it an excellent choice for energy harvesting and automotive applications. When designing with this device, it is important to select the appropriate inductor and output capacitors based on the desired output ripple and transient response. The exposed pad should be soldered to a large copper area for optimal thermal dissipation.
LTC3115-1EFE#PBF - 40V, 2A Sync Buck-Boost DC/DC | Analog Devices
The LTC3115-1EFE#PBF is a high voltage monolithic synchronous buck-boost DC/DC converter from Analog Devices. It operates from input voltages as low as 2.7V up to 40V and provides an adjustable output voltage from 2.7V to 40V, delivering up to 2A of output current. The device is housed in a 20-lead TSSOP package with an exposed pad (FE16), enabling efficient thermal management in compact designs. A buck-boost converter is a type of DC-DC switching regulator that can step up or step down an input voltage to produce a regulated output voltage, regardless of whether the input is higher or lower than the output. This makes it ideal for battery-powered systems where the battery voltage can drop below the required rail voltage. The LTC3115-1 belongs to the family of switching regulators, which are more efficient than linear regulators for high-current applications, though they introduce switching noise that must be managed with proper filtering. Key features of the LTC3115-1 include a proprietary low noise switching algorithm that optimizes efficiency while minimizing output ripple, four internal low resistance N-channel DMOS switches that reduce power losses, and a wide 2.7V to 40V input and output range. The device also offers Burst Mode operation for high efficiency at light loads, a programmable frequency from 300kHz to 2MHz, and a power good output for system monitoring. The LTC3115-1 uses a current-mode control architecture with a proprietary switching scheme that allows seamless transition between buck, boost, and buck-boost modes. This ensures stable operation across the entire input/output voltage range. The internal DMOS switches have low on-resistance, which minimizes conduction losses and improves overall efficiency, especially at high output currents. Typical applications include automotive power supplies, industrial power systems, battery-powered equipment, and portable devices where a wide input voltage range and high efficiency are required. The device is well suited for powering sensors, microcontrollers, and other loads that need a stable voltage from a varying input source. When designing with the LTC3115-1, it is important to select the external inductor and capacitors according to the datasheet guidelines to achieve optimal performance. The switching frequency can be synchronized to an external clock to avoid interference in noise-sensitive applications. Proper PCB layout with short, wide traces for high-current paths is essential to minimize parasitic inductance and ensure stable operation.
LTC3115-1EFE#TRPBF - 40V, 2A Sync Buck-Boost | Analog Devices
The LTC3115-1EFE#TRPBF from Analog Devices is a high voltage monolithic synchronous buck-boost DC/DC converter that operates from input and output voltages as low as 2.7V to as high as 40V. It delivers up to 1A continuous output current in buck mode and 2A in boost mode, making it a versatile power solution for a wide range of applications. The device is housed in a 20-lead TSSOP package with an exposed pad (FE16), providing excellent thermal performance for demanding industrial and automotive environments. A buck-boost converter is a type of DC-DC switching regulator that can step up or step down an input voltage to produce a regulated output voltage, regardless of whether the input is higher or lower than the output. This is achieved by combining buck (step-down) and boost (step-up) topologies in a single circuit, using four internal low-resistance N-channel DMOS switches. The LTC3115-1 is part of the broader family of switching regulators, which are essential building blocks in power management systems, converting unregulated power sources into stable, usable voltages for electronic circuits. Key features of the LTC3115-1 include a proprietary low noise switching algorithm that optimizes efficiency across a wide input voltage range, a programmable switching frequency from 100kHz to 2MHz, and a low quiescent current of 50uA in Burst Mode operation. The device also offers a precision 0.8V reference, soft-start, and a power good output, simplifying system design and ensuring reliable startup and fault monitoring. Technically, the LTC3115-1 uses a current-mode control architecture with a 1.2A peak inductor current limit, enabling stable operation with a wide range of external components. The four internal DMOS switches have low on-resistance, minimizing conduction losses and maximizing efficiency, which can exceed 95% in typical applications. The device also includes thermal shutdown and overcurrent protection, enhancing robustness in harsh environments. Typical applications include automotive power systems, industrial control equipment, battery-powered devices, and point-of-load regulation where the input voltage may vary above or below the desired output. Its wide input range and high efficiency make it ideal for 12V and 24V industrial buses, as well as for powering sensors, microcontrollers, and communication interfaces. When designing with the LTC3115-1, it is important to select the inductor and capacitors according to the datasheet guidelines to achieve the desired ripple and transient response. The exposed pad should be soldered to a large copper area for effective heat dissipation, and the switching node should be kept short to minimize EMI.
LTC3115-1IDE#PBF - 40V, 2A Buck-Boost DC/DC Converter | Analog Devices
The LTC3115-1IDE#PBF is a high voltage monolithic synchronous buck-boost DC/DC converter from Analog Devices (formerly Linear Technology). It operates from a wide 2.7V to 40V input voltage range and provides a programmable output voltage from 2.7V to 40V, delivering up to 2A of output current. The device is housed in a 16-lead DFN package with an exposed pad, suitable for compact power management designs. A buck-boost converter is a type of DC-DC converter that can step up or step down an input voltage to produce a regulated output voltage, regardless of whether the input is higher or lower than the output. This makes it ideal for battery-powered systems where the battery voltage may vary above and below the desired rail. The LTC3115-1 is a synchronous 4-switch topology, which uses internal MOSFETs to achieve high efficiency across a wide load range. Key features include a programmable output current limit, an internal phase-locked loop for synchronization to an external clock, and a shutdown mode that reduces quiescent current to near zero. The switching frequency is adjustable from 300kHz to 2MHz via an external resistor, allowing designers to optimize efficiency versus component size. The device also offers soft-start to limit inrush current during startup. Technically, the LTC3115-1 uses a current-mode control architecture with a 4-switch buck-boost topology, enabling seamless transition between buck and boost modes. It achieves efficiencies up to 95% in typical applications. The wide input range and high output current make it suitable for automotive, industrial, and portable applications where input voltage can fluctuate significantly. Typical applications include automotive power supplies for infotainment and ADAS, industrial sensors and actuators, and battery-powered equipment such as portable instruments and IoT devices. The device's ability to maintain a regulated output from a varying input makes it a versatile choice for power management. When designing with the LTC3115-1, ensure proper PCB layout with low-inductance ground paths and adequate thermal vias for the exposed pad. The switching node should be kept short to minimize EMI. Also, select the inductor and capacitors according to the datasheet guidelines to achieve stable operation.
LTC3115-1IDE#TRPBF - 40V, 2A Buck-Boost Converter | Analog Devices
The LTC3115-1IDE#TRPBF is a high voltage monolithic synchronous buck-boost DC/DC converter from Analog Devices (formerly Linear Technology). It operates from input voltages as low as 2.7V to as high as 40V, and can regulate output voltages from 2.7V to 40V, making it extremely versatile for automotive, industrial, and battery-powered applications. The device delivers up to 2A of output current in buck mode and 1A in boost mode, with four internal low-resistance N-channel DMOS switches that minimize external component count and reduce power losses. A buck-boost converter is a type of DC-DC switching regulator that can produce an output voltage either higher or lower than the input voltage. It is essential in systems where the input supply can vary above and below the desired output, such as automotive power rails during cranking or battery-powered devices as the cell voltage declines. The LTC3115-1 belongs to the family of switching regulators, which are more efficient than linear regulators for large voltage differences, though they introduce switching noise that must be filtered. Key features include pin-selectable Burst Mode operation that reduces standby current and improves light-load efficiency, a 3µA shutdown current, output disconnect in shutdown, short-circuit protection, and internal soft-start. The wide 2.7V to 40V input and output range, combined with the 2A/1A current capability, makes it suitable for a broad range of power management tasks. The device is available in a 16-lead DFN package with exposed pad for thermal management. The LTC3115-1 uses a proprietary control architecture that allows seamless transition between buck and boost modes without output disruption. The four internal switches are sized to minimize conduction and switching losses, achieving efficiencies up to 95% in typical applications. The device also features a programmable output current limit, allowing designers to tailor the current limit to the specific application. Typical applications include automotive power supplies for infotainment and ADAS, industrial control systems, portable instruments, and battery-powered equipment where input voltage varies widely. The wide input range and high efficiency make it ideal for 12V and 24V industrial buses, as well as multi-cell Li-ion battery packs. When designing with the LTC3115-1, careful attention must be paid to the inductor selection and PCB layout to minimize parasitic inductance and ensure stable operation. The exposed pad should be soldered to a large copper area for adequate heat dissipation, especially at high output currents.
LTC3115-2EFE#PBF - 40V, 2A Sync Buck-Boost DC/DC | Analog Devices
The LTC3115-2EFE#PBF is a high voltage monolithic synchronous buck-boost DC/DC converter from Analog Devices, optimized for applications subject to fast (less than 1ms) input voltage transients. It operates from a wide 2.7V to 40V input voltage range and provides a regulated output voltage adjustable from 2.7V to 40V, delivering up to 2A of output current. The device is housed in a 20-lead TSSOP package with exposed pad (FE16), enabling efficient thermal management in compact designs. A buck-boost converter is a type of DC-DC converter that can step up or step down an input voltage to produce a regulated output voltage, regardless of whether the input is higher or lower than the output. This makes it ideal for battery-powered systems where the battery voltage can vary above and below the desired rail. The LTC3115-2 belongs to the family of switching regulators, which are power management ICs that use inductive energy storage to achieve high efficiency, often exceeding 90%. Key features of the LTC3115-2 include a 2A output current capability, a wide 2.7V to 40V input and output range, and a switching frequency programmable from 400kHz to 2MHz. It also features Burst Mode operation for high efficiency at light loads, a 3µA shutdown current, output disconnect in shutdown, short-circuit protection, and internal soft-start. The device is designed to handle fast input voltage transients, making it suitable for automotive and industrial applications where supply voltage can fluctuate rapidly. The LTC3115-2 uses a current-mode control architecture with a 4-switch synchronous rectifier topology, which minimizes conduction losses and improves efficiency across a wide load range. The device integrates the power switches, reducing external component count and simplifying PCB layout. Its programmable switching frequency allows designers to optimize efficiency versus component size, and the SYNC pin enables synchronization to an external clock for noise-sensitive applications. Typical applications include automotive power supplies, industrial instrumentation, portable devices, and battery-powered systems where a stable output voltage is required from a varying input source. The LTC3115-2 is particularly well-suited for systems that experience fast input voltage transients, such as those in automotive load-dump conditions or industrial power rails. When designing with the LTC3115-2, it is important to select the inductor and output capacitors according to the datasheet guidelines to ensure stability and optimal transient response. The exposed pad should be soldered to a large copper area for effective heat dissipation, especially at high output currents.
LTC3115-2EFE#TRPBF - 40V, 2A Sync Buck-Boost | Analog Devices
The LTC3115-2EFE#TRPBF is a high voltage monolithic synchronous buck-boost DC/DC converter from Analog Devices, optimized for applications subject to fast (less than 1ms) input voltage transients. It operates from a wide 2.7V to 40V input voltage range and provides a positive adjustable output from 2.7V to 40V, delivering up to 800mA in buck mode and 2A in boost mode. Housed in a 20-lead TSSOP package with exposed pad (0.173", 4.40mm width), this converter integrates four switches, eliminating the need for external MOSFETs and simplifying PCB layout. A buck-boost converter is a type of DC-DC switching regulator that can step up or step down an input voltage to produce a regulated output, regardless of whether the input is higher or lower than the output. This makes it ideal for battery-powered systems where the battery voltage may drop below the required rail. The LTC3115-2 belongs to the family of switching regulators, which are more efficient than linear regulators but generate switching noise that must be managed with proper filtering. Key features include a wide 2.7V to 40V input and output range, 800mA/2A output current capability, and a proprietary switching algorithm that ensures seamless transitions between buck and boost modes. The device offers internal soft-start, short-circuit protection, and output disconnect in shutdown, with a low 3µA shutdown current. Its high efficiency, up to 95%, reduces thermal dissipation and extends battery life in portable applications. Technically, the LTC3115-2 uses a current-mode control architecture with a fixed frequency of 1.2MHz, allowing the use of small, low-profile inductors and capacitors. The device is designed to handle fast input transients without output voltage deviation, making it suitable for automotive and industrial environments where supply lines can fluctuate rapidly. The exposed pad enhances thermal performance, enabling higher power dissipation in compact designs. Typical applications include automotive power supplies, industrial control systems, battery-powered equipment, and portable instrumentation. Its ability to maintain a regulated output during input voltage dips makes it ideal for systems powered by multi-cell batteries or unregulated sources. The LTC3115-2 is also used in power-over-Ethernet (PoE) and USB power delivery applications. When designing with this device, ensure proper input and output capacitor selection to minimize ripple and maintain stability. The exposed pad should be soldered to a large copper area for effective heat sinking. For applications not requiring fast transient response, the LTC3115-1 is recommended as a lower-cost alternative.
LTC3115-2IDE#PBF - 40V, 2A Sync Buck-Boost DC/DC | Analog Devices
The LTC3115-2IDE#PBF is a high voltage monolithic synchronous buck-boost DC/DC converter from Analog Devices, optimized for applications subject to fast (1ms) input voltage transients. It operates from a wide 2.7V to 40V input range and provides a regulated output from 2.7V to 18V with a continuous output current of up to 2A. The device is available in a 20-lead TSSOP package with exposed pad (IDE suffix), suitable for compact industrial and automotive power designs. A buck-boost converter is a type of DC-DC converter that can step up or step down an input voltage to produce a regulated output voltage, regardless of whether the input is higher, lower, or equal to the output. This makes it ideal for battery-powered systems where the battery voltage varies above and below the required rail. The LTC3115-2 belongs to the family of switching regulators, which are power management ICs that use inductive energy storage to achieve high efficiency, often exceeding 90%. Key features of the LTC3115-2 include a proprietary low noise switching algorithm that optimizes efficiency across all operating modes and ensures seamless transitions between buck, boost, and buck-boost operation. It offers a programmable switching frequency from 300kHz to 2MHz, allowing designers to trade off efficiency against component size. The device also includes a precision 0.8V reference, soft-start, and a power good output for system monitoring. Technically, the LTC3115-2 uses a four-switch synchronous architecture with internal N-channel MOSFETs, achieving peak efficiencies up to 95%. Its low noise algorithm reduces output voltage ripple and electromagnetic interference, making it suitable for noise-sensitive applications. The wide input voltage range accommodates automotive load dumps and industrial 24V rails, while the 2A output current supports moderate power loads. Typical applications include automotive power supplies for infotainment and ADAS, industrial sensors and actuators, portable instruments, and battery-powered equipment where input voltage varies widely. The device's fast transient response (1ms) makes it particularly suited for systems with sudden load steps or input voltage dips. When designing with the LTC3115-2, ensure proper PCB layout with short, low-inductance paths for the switching nodes and adequate input/output capacitance to handle ripple currents. The exposed pad must be soldered to a thermal relief for heat dissipation. Refer to the datasheet for component selection guidelines to optimize efficiency and transient response.
LTC3115-2IDE#TRPBF - 40V, 2A Sync Buck-Boost | Analog Devices
The LTC3115-2IDE#TRPBF is a high voltage monolithic synchronous buck-boost DC/DC converter from Analog Devices, optimized for applications subject to fast (<1ms) input voltage transients. It operates from a wide 2.7V to 40V input range and provides an adjustable output voltage from 2.7V to 40V, delivering up to 2A output current. Housed in a 16-lead DFN package with exposed pad, this converter integrates four switches for high efficiency across a wide input/output voltage range. A buck-boost DC/DC converter is a type of switching regulator that can step up or step down an input voltage to produce a regulated output voltage, regardless of whether the input is higher or lower than the output. This makes it ideal for battery-powered systems where the battery voltage can vary above and below the desired rail. The LTC3115-2 belongs to the family of synchronous buck-boost converters, which use active switches instead of diodes to improve efficiency, and it is part of the broader category of power management ICs. Key features include a proprietary low noise switching algorithm that minimizes output voltage ripple, a programmable switching frequency from 300kHz to 2MHz, and a SYNC pin for external clock synchronization. The device also offers a power good output, soft-start, and short-circuit protection. Its wide input voltage range and high efficiency make it suitable for automotive and industrial power supplies, where input transients are common. The LTC3115-2 uses a current-mode control architecture with a 4-switch topology, enabling seamless transition between buck and boost modes. The device is designed to handle fast input voltage transients without output disruption, making it distinct from the LTC3115-1, which is recommended for general-purpose applications. The IC includes internal compensation and requires minimal external components. Typical applications include automotive power supplies for infotainment and ADAS, industrial sensors and actuators, battery-powered equipment, and point-of-load regulation in systems with wide input voltage variations. Its ability to maintain regulation during cranking or load dumps makes it particularly valuable in automotive environments. When designing with this device, ensure proper PCB layout with low-inductance paths for the switching nodes and adequate thermal vias for the exposed pad. The switching frequency should be chosen to balance efficiency and component size, and the inductor value must be selected according to the datasheet guidelines to maintain stability.
LTC3221EDC-5 - 60mA 5V Micropower Charge Pump | Analog Devices
The Analog Devices LTC3221EDC-5 is a micropower, regulated charge pump DC/DC converter that delivers a fixed 5V output at up to 60mA from a 2.5V to 5.5V input, housed in a 6-lead 2mm x 2mm DFN package (DC suffix). It uses a switched-capacitor doubler/inverter topology with no external inductor required, drawing only 8uA quiescent current, and is specified for commercial 0C to 70C operation with design-assured -40C to 85C behavior. A charge pump is a type of switched-capacitor voltage converter that moves charge between capacitors using MOSFET switches to step a DC voltage up, down, or invert it without magnetic components. Within the broader power management IC hierarchy, the LTC3221 sits in the family of DC-DC converters (specifically non-magnetic switching regulators) and is intended for low-noise, low-EMI point-of-load rails in space-constrained battery-powered designs where inductor selection, layout, and audible noise are unacceptable trade-offs. Key features include 5V +/-4% regulated output (LTC3221-5 fixed version), 60mA output current, 8uA quiescent current, and very low shutdown current drawn from VIN. The device also features an SHDN logic pin for shutdown, comes in a tiny 2mm x 2mm DFN-6 (DC) package with exposed pad, and offers pin-selectable doubler/inverter configuration. The exposed thermal pad must be soldered to the PCB ground plane to meet thermal ratings and to provide the low-impedance return required by the charge-pump switches. The architecture is a 1.5x/2x switched-capacitor doubler for the -5 variant, achieving regulation via an internal bandgap reference and comparator-controlled switch timing. Without an inductor, the LTC3221-5 produces lower radiated EMI than inductor-based boost converters, making it ideal for RF and audio-adjacent supplies where switching noise must be minimized. The trade-off is reduced efficiency versus inductive boost at high load, so it is optimized for low-current rails up to 60mA. Typical applications include biasing LEDs from a single Li-ion cell, generating a clean 5V analog rail in portable instruments, and providing a low-ripple supply for sensors, op-amps, or low-power RF transceivers. The fixed 5V version simplifies design where downstream ICs require a stable 5V regardless of VIN above or below 5V. When designing with this part, place the four external flying capacitors and bypass capacitors as close as possible to the VIN, CPO, CPO-, VOUT, and GND pins. The exposed pad must be soldered for both thermal dissipation and electrical ground, and SHDN must be tied to VIN for always-on operation or driven by a logic signal for sequencing.
LTC3309AEV#TRMPBF - 6A Synchronous Step-Down Silent Switcher | Analog Devices
The Analog Devices LTC3309AEV#TRMPBF is a very small, high-efficiency, low-noise, monolithic synchronous 6A step-down DC/DC converter operating from a 2.25V to 5.5V input supply, housed in a 12-lead 2mm x 2mm LQFN package with exposed pad. It uses constant-frequency peak current-mode control with switching frequencies programmable from 1MHz to 3MHz, and integrates the Silent Switcher architecture to minimize EMI/EMC emissions. A buck DC/DC switching regulator is a type of switched-mode power supply (SMPS) that steps a higher DC input voltage down to a lower regulated DC output voltage by rapidly switching an inductor-capacitor filter network. In the broader system hierarchy, a buck converter belongs to the voltage regulator family, which sits under power management ICs and ultimately under analog and mixed-signal semiconductors. Compared to linear regulators (LDOs), buck converters achieve far higher efficiency at large VIN-VOUT differentials because they do not dissipate the drop-out voltage as heat. Key features of the LTC3309AEV include 6A continuous output current, a 0.5V to VIN output range with ±1% reference accuracy, internal synchronous switches that eliminate the need for an external Schottky diode, and Silent Switcher technology that enables CISPR 22/25 Class B compliance with proper PCB layout. The 2mm x 2mm LQFN package provides low thermal resistance for compact, high-current designs. The LTC3309AEV uses peak current-mode control with internal compensation, which simplifies loop stabilization across a wide range of output LC filters. The architecture supports parallel operation of multiple ICs for higher load current and offers programmable switching frequency for trade-offs between efficiency, solution size, and noise spectrum placement. Typical applications include point-of-load (POL) conversion in space-constrained systems such as FPGA/ASIC rails, portable instruments, optical modules, and battery-powered devices that require high current from a 5V or 3.3V bus. The combination of small size, low noise, and high efficiency makes the LTC3309AEV particularly well suited to dense PCBAs. When designing with this part, prioritize the recommended PCB layout for Silent Switcher performance - the exposed pad must be soldered to a continuous ground plane with adequate thermal vias, and input/output capacitors must be placed as close to the IC as possible to minimize switching noise. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical layout guidance for the LTC3309AEV#TRMPBF that go beyond the manufacturer datasheet.
LTC3309AHV#TRMPBF - 6A, 5.5V Synchronous Step-Down Silent Switcher | Analog Devices
The Analog Devices LTC3309AHV#TRMPBF is a very small, high efficiency, low noise, monolithic synchronous 6A step-down DC/DC converter operating from a 2.25V to 5.5V input supply. It uses constant-frequency peak current-mode control at switching frequencies from 1MHz to 3MHz, and is housed in a 12-lead 2mm x 2mm LQFN package with an exposed thermal pad. The output voltage is programmable from 0.5V to 5.5V, making it ideal for point-of-load conversion from 3.3V or 5V rails in densely populated PCBs. A synchronous step-down (buck) DC/DC converter is a switching regulator that steps a higher DC input voltage down to a lower regulated DC output voltage. It uses two MOSFETs that switch in alternation - one connecting the inductor to the input, the other to ground - so that energy is transferred and filtered continuously. Compared to a linear regulator, a buck converter delivers much higher efficiency (often 90%+) at non-trivial VIN-to-VOUT ratios, and is the dominant topology for point-of-load power in modern digital systems. The Silent Switcher architecture additionally minimizes EMI by containing high-di/dt loops inside the package and using an internal bypass capacitor. Key features include 6A continuous output current, 1.2 mA quiescent current, internal compensation, and Silent Switcher architecture for low EMI. The device operates at a programmable switching frequency between 1MHz and 3MHz, enabling the use of small ceramic capacitors and inductors while keeping the fundamental switching noise above most sensitive RF bands. Forced continuous and Burst Mode operation are user-selectable via the MODE pin to trade light-load efficiency against output ripple. The exposed pad provides a low thermal resistance path suitable for the 6A load capability in a 2mm x 2mm footprint. The LTC3309A is built on a monolithic synchronous architecture that integrates the high-side and low-side MOSFETs, the bootstrap diode, and the control loop into a single die. Peak current-mode control provides cycle-by-cycle current limiting and inherent line regulation, while internal loop compensation removes the need for an external compensation network and simplifies PCB design. Silent Switcher 2 architecture further reduces radiated emissions by minimizing the AC hot loops, allowing the part to pass CISPR 25 and similar EMI standards in automotive infotainment and ADAS systems. Typical applications include point-of-load power for FPGAs, ASICs, DSPs, and microprocessors, automotive infotainment and ADAS supplies, battery-powered portable devices, and distributed 5V bus regulation. The wide VIN range and small footprint also make it attractive for space-constrained industrial modules and server/communications point-of-load rails. When designing with this device, place the input capacitors directly on the VIN pins and bond them to the PGND copper pour on the top layer; both VIN pins (3 and 8) require local decoupling according to the manufacturer datasheet. Choose an inductor with low DCR and adequate saturation current (>40% above IOUT), and use X7R or X5R ceramic output capacitors rated for the actual AC ripple current, not just DC voltage. This page synthesizes distributor pricing, same-family drop-in alternatives, and application design notes not collected in any single place on the manufacturer datasheet.
LTC3310SIV#PBF - 10A, 5.5V Silent Switcher 2 Buck Converter | ADI
The Analog Devices LTC3310SIV#PBF is a monolithic synchronous step-down DC/DC converter that delivers up to 10 A of continuous output current from a 2.25 V to 5.5 V input rail, housed in an 18-lead 3 mm x 3 mm LQFN package with exposed pad. It combines Silent Switcher 2 architecture with internal hot-loop bypass capacitors to achieve low EMI and high efficiency at switching frequencies up to 5 MHz, while the adjustable output spans 0.5 V to V_IN. What is a synchronous step-down (buck) converter? A buck converter is a switched-mode power supply (SMPS) topology that steps a higher DC input voltage down to a lower regulated DC output. Synchronous designs replace the traditional Schottky rectifier with a MOSFET driven by the control IC, which lowers conduction loss and raises efficiency at high currents. As a sub-class of voltage regulators, monolithic buck converters integrate the power MOSFETs, gate drivers, feedback loop, and protection into a single IC, shrinking PCB area versus discrete buck implementations while still belonging to the broader power management IC family. Key features of the LTC3310SIV#PBF include 10 A continuous output, 2.25 V-5.5 V input range, adjustable output from 0.5 V to V_IN, switching frequency programmable up to 5 MHz, internal loop compensation, output voltage tracking and sequencing, power-good flag, and thermally enhanced 18-TFQFN (LQFN-18) package. The Silent Switcher 2 topology with internal bypass capacitors reduces the high-frequency loop area to a minimum, which means it can pass CISPR 25 / CISPR 22 radiated EMI limits without an input inductor shield. Architecturally, the device uses a constant-frequency current-mode control loop with internal MOSFETs (top and bottom) sized for 10 A continuous duty. Hot-loop bypass capacitors are co-packaged inside the LQFN to minimize dV/dt-induced EMI, and the high-side current sensing enables cycle-by-cycle current limit. According to the Analog Devices LTC3310S datasheet, peak efficiency exceeds 90% at 12 V_IN to 3.3 V_OUT at moderate loads. Typical applications are point-of-load (POL) converters for FPGAs, ASICs, DSPs, and microprocessors in 5 V distributed systems; portable instrumentation and battery-powered devices; industrial 24 V-to-5 V intermediate bus converters (with pre-regulation); telecom and networking line cards; and noise-sensitive analog or RF rails where low EMI switching is mandatory. Design consideration: at 10 A output, 5 V input to 1.0 V output, the converter dissipates substantial heat in the exposed pad. Use a minimum 4-layer PCB with at least 25 x 25 mm of copper tied to GND under the EP, and follow the datasheet's reference layout for input capacitors directly on the package thermal pad to minimize EMI. This page synthesizes distributor pricing, drop-in and same-family alternatives, and practical design notes not found in the standalone datasheet.
LTC3310SIV#TRPBF - 10A 5V Silent Switcher 2 Sync Buck | ADI
The Analog Devices LTC3310SIV#TRPBF is a 10 A synchronous step-down DC/DC converter in a 3 mm x 3 mm 18-lead LQFN (IV) package, employing the Silent Switcher 2 architecture with internal hot-loop bypass capacitors. It operates from a 2.25 V to 5.5 V input and delivers an adjustable output from 0.5 V up to 5.5 V at up to 10 A continuous load, with peak efficiency above 95% and 1.8 MHz to 2.2 MHz switching frequency. The part is supplied on a 7-inch tape-and-reel carrier with the #TRPBF suffix indicating Pb-free, RoHS-compliant packaging. What is a Silent Switcher 2 buck converter? A buck (step-down) DC/DC switching regulator reduces a higher input voltage to a lower regulated output voltage by rapidly switching an inductor-capacitor energy reservoir. The Silent Switcher 2 architecture from Analog Devices integrates the input hot-loop bypass capacitors inside the package, dramatically reducing radiated EMI by eliminating the high di/dt loop antenna, which simplifies EMI compliance for sensitive analog and RF systems. This class of monolithic synchronous buck sits within the broader taxonomy of switching regulator -> DC/DC converter -> power management IC -> semiconductor. Key features include monolithic synchronous rectification (no external Schottky required), internal compensation, programmable switching frequency from 1 MHz to 5 MHz, and 100% maximum duty-cycle operation for low-dropout regulation. The LTC3310SIV#TRPBF also integrates internal soft-start, output voltage tracking, power-good indication, and thermal shutdown, which together reduce external component count to a single inductor plus a handful of small ceramics. The LTC3310S uses constant-frequency current-mode control with a high-bandwidth error amplifier, providing fast transient response to load steps up to 10 A and excellent line regulation across the 2.25 V to 5.5 V input range. Internal MOSFETs are optimized for 5 V rails typical of USB-PD, PCIe, FPGA, and ASIC point-of-load applications. The exposed pad provides a low thermal resistance path, supporting full 10 A delivery without external heatsinking at moderate ambient temperatures. Typical applications include 5 V rail point-of-load regulation for FPGAs and ASICs, optical transceivers, PCIe Gen4/5 card supplies, portable battery-powered instrumentation, and any 5 V distributed-bus distributed-power system that demands low EMI. According to the manufacturer datasheet, the part is characterized for -40 C to 125 C junction operation. When designing with this device, choose a low-DCR shielded power inductor rated for at least 12 A saturation, and place the input/output ceramic capacitors within 2 mm of the package to keep the Silent Switcher 2 noise cancellation effective. Always reference the AGND pin directly to the load-side ground of the feedback divider. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
LTC3310SIV#WPBF - 10A Silent Switcher 2 Buck Regulator | ADI
The Analog Devices LTC3310SIV#WPBF is a 10 A monolithic synchronous step-down DC/DC converter using the proprietary Silent Switcher 2 architecture with internal hot-loop bypass capacitors, housed in a 3 mm × 3 mm 18-lead LQFN (also described as 18-TFQFN Exposed Pad) package. It accepts a 2.25 V to 5.5 V input supply and delivers an adjustable output from 0.5 V up to 5.5 V at up to 10 A of continuous load current, with a default 2 MHz switching frequency that minimizes EMI and enables a compact solution footprint. A buck (step-down) DC/DC converter is a switched-mode power supply topology that uses an inductor, a switching element, and output filtering to efficiently convert a higher DC input voltage into a lower DC output voltage. Buck regulators occupy the power management IC (PMIC) category inside the broader semiconductor hierarchy, and they are preferred over linear regulators whenever the input-to-output voltage differential is large, because switching conversion avoids the continuous power dissipation of a series-pass element. Silent Switcher 2 is a refinement that integrates the input hot-loop bypass capacitor inside the package, drastically shrinking the high di/dt loop area to suppress radiated EMI without external ceramic capacitors. Key features of the LTC3310SIV#WPBF include 10 A continuous output from a 3 mm × 3 mm package, 2 MHz switching frequency (programmable from 1 MHz to 3 MHz), internal bypass capacitors, ±1% output voltage accuracy, internal soft-start, power-good flag, and 95% peak efficiency. The IV suffix denotes the industrial temperature grade (-40 °C to +125 °C). The exposed pad provides a low thermal resistance path that supports full 10 A delivery without a heatsink on a 4-layer board. Typical applications include point-of-load regulation for FPGAs, ASICs, and SoCs, optical module supplies, telecom/datacom rails, distributed 5 V bus architectures, and portable instrumentation. Because the device runs at 2 MHz, designers can use a 0.47 µH to 1 µH inductor and a 22 µF output capacitor to keep the total solution below 25 mm × 15 mm. Use the power-good output to sequence downstream rails and the TRACK/SS pin to soft-start into large bulk capacitance. Choose the LTC3310SIV#WPBF when 10 A of low-noise point-of-load current is required from a 5 V rail in a small footprint. For 6 A-class designs, the LTC3310SIV-1#PBF shares the same pinout. Pair it with the LT8640/8645 family for higher-current multi-rail systems and refer to the LTC3310S datasheet for loop compensation guidelines.
LTC3310SIV-1#PBF - 10A Silent Switcher 2 Step-Down DC/DC | ADI
The Analog Devices LTC3310SIV-1#PBF is a 10A synchronous step-down DC/DC converter using Silent Switcher 2 architecture with internal hot-loop bypass capacitors, packaged in an 18-lead 3mm x 3mm LQFN with exposed pad. It operates from a 2.25V to 5.5V input and produces an adjustable output from 0.5V up to 5.5V (the -1 variant uses an external reference, while the non- -1 variant uses an internal 0.5V reference). What is a Silent Switcher 2 buck converter? A buck (step-down) DC/DC converter is a switching regulator that efficiently converts a higher DC voltage to a lower DC voltage by chopping the input with a power switch and smoothing with an LC filter. Silent Switcher 2 is Analog Devices' second-generation ultra-low-EMI architecture that integrates the bypass capacitors directly inside the package over the inductor (hot loop), virtually eliminating the high-frequency loop antenna and reducing radiated EMI by up to 20 dB compared with conventional buck layouts. Key features include 10A continuous output current from a tiny 9 mm² footprint, programmable switching frequency up to 5 MHz, 95% peak efficiency at 1 MHz, and ±1% output voltage accuracy over line, load, and temperature. The LTC3310SIV-1#PBF also integrates internal MOSFETs plus bootstrap diodes, so no external Schottky or FETs are required, and it supports external clock synchronization for multi-rail systems. The device uses a constant-frequency peak current-mode control architecture with internal compensation, simplifying loop design. The -1 variant accepts an external reference voltage on the VREF/ITH pin, allowing it to track a system reference or implement DDR termination. The internal MOSFETs use low-Qg, low-Rds(on) silicon for high efficiency even at light loads, and the IC includes input overvoltage, output overvoltage, and thermal shutdown protections. Typical applications include point-of-load regulation for FPGAs, ASICs, and DSPs in optical transceivers and RF modules; DDR memory termination; telecom base-station digital rails; and any space-constrained 5V distributed-bus design where low EMI is mandatory. The compact 3mm x 3mm footprint also makes it well suited to handheld test and measurement instruments. When designing with this part, place the input capacitors as close as possible to the VIN and GND pins, use a 0.47µH to 1µH low-DCR shielded inductor, and ensure the exposed pad has at least 4 thermal vias to the inner ground plane. The Silent Switcher 2 architecture eliminates many PCB layout EMI pitfalls but does not eliminate the need for a proper input capacitor return path.
LTC3310SIV-1#TRMPBF - 10A, 5.5V Sync Step-Down Silent Switcher 2 | ADI
The Analog Devices LTC3310SIV-1#TRMPBF is a 10 A monolithic synchronous step-down DC/DC converter with a fixed 1 V output, housed in an 18-lead 3 mm x 3 mm LQFN exposed-pad package. It accepts a 2.25 V to 5.5 V input rail and employs the proprietary Silent Switcher 2 architecture with internal hot-loop bypass capacitors to minimize radiated EMI. What is a synchronous buck converter? A synchronous buck (step-down) DC/DC converter is a switching regulator that uses two MOSFETs - one high-side and one low-side - to convert a higher DC input voltage into a lower DC output voltage with very high efficiency. Compared to a non-synchronous buck that uses a diode for the low-side path, synchronous designs replace the diode with a MOSFET, eliminating the diode forward drop and pushing peak efficiencies above 95%. Buck converters sit within the broader hierarchy of voltage regulators -> DC-DC converters -> power management ICs -> power semiconductors, and are the workhorse topology for point-of-load conversion in nearly every digital system. Key features include 10 A continuous output current, sub-1 uA quiescent current in Burst Mode operation, fixed 1 V output (LTC3310SIV-1 variant), internal compensation, and a programmable switching frequency up to 5 MHz. The Silent Switcher 2 architecture also enables clean switching edges that easily meet CISPR 25 Class 5 automotive EMI limits, even with a 2-layer PCB. The LTC3310S architecture integrates the top and bottom power MOSFETs, the bootstrap capacitor, and hot-loop bypass capacitors inside the package, dramatically shrinking the external component count. The IV (industrial, 3 mm x 3 mm LQFN) package delivers thermally efficient power handling - typical applications sustain 10 A continuously with proper PCB copper area and no external heatsink. Typical applications include automotive infotainment and ADAS point-of-load rails, FPGA/ASIC/SoC core and I/O supplies, optical transceiver modules, high-current serial bus power (PCIe, multi-gigabit transceivers), and post-regulation stages following a 5 V or 3.3 V system rail. When designing with this device, prioritize a low-impedance ground plane and follow the reference PCB layout in the manufacturer datasheet exactly - Silent Switcher 2 is sensitive to high-frequency loop inductance. For light-load efficiency, enable Burst Mode; for lowest output ripple, select forced-continuous mode.
LTC3370EUH#PBF - 4-Ch 8A Configurable Buck DC/DC | Analog Devices
The LTC3370EUH#PBF from Analog Devices is a highly flexible multioutput power supply IC that integrates four synchronous buck converters, configured to share eight 1A power stages. Each converter is powered from independent 2.25V to 5.5V inputs, and the DC/DCs are assigned to one of eight power configurations via pin-programmable C1-C3 pins. The common buck switching frequency can be programmed with an external resistor, allowing designers to optimize efficiency and component size. The device is available in a 32-lead WFQFN exposed pad package (EUH suffix) and operates over the industrial temperature range of -40°C to +125°C. A multioutput buck converter is a type of DC-DC switching regulator that provides multiple regulated output voltages from a single input supply. It belongs to the broader category of power management ICs (PMICs), which manage power distribution and conversion in electronic systems. The LTC3370 is a synchronous buck converter, meaning it uses both high-side and low-side switches to achieve high efficiency, especially at lower output voltages. This architecture reduces power loss compared to asynchronous converters, making it ideal for battery-powered and energy-sensitive applications. Key features of the LTC3370EUH#PBF include four independent buck converters with a total output current of 8A (eight 1A stages), adjustable output voltages from 0.8V to 5.5V, and a wide input voltage range of 2.25V to 5.5V. The device supports eight distinct power configurations, allowing designers to allocate the 1A stages flexibly among the four outputs. The switching frequency is programmable from 1MHz to 3MHz via an external resistor, enabling trade-offs between efficiency and component size. Additionally, the LTC3370 includes internal compensation, soft-start, and overcurrent protection, simplifying design and enhancing reliability. From a technical perspective, the LTC3370 uses a current-mode control architecture with synchronous rectification, achieving efficiencies up to 95%. The eight 1A power stages can be paralleled to provide higher current on a single output, such as 4A on one output while the others are disabled. The C1-C3 pins allow configuration of the power stage assignment, providing flexibility for various load requirements. The device also features a power-good output and an enable pin for each channel, enabling sequenced power-up and fault monitoring. The 32-lead WFQFN package with exposed pad ensures excellent thermal performance, with a thermal resistance of approximately 28°C/W. Typical applications for the LTC3370EUH#PBF include portable and battery-powered devices, FPGA and DSP power supplies, solid-state drives, and industrial equipment. Its ability to provide multiple regulated rails from a single input makes it ideal for systems requiring core, I/O, and auxiliary voltages. The high efficiency and low quiescent current extend battery life in handheld devices, while the programmable frequency allows optimization for EMI-sensitive applications. When designing with the LTC3370, it is important to select appropriate external inductors and capacitors based on the switching frequency and output current. The exposed pad should be soldered to a large copper area for effective heat dissipation. Additionally, the C1-C3 pins must be configured correctly to achieve the desired power stage allocation, and the RT pin resistor sets the switching frequency. Proper layout with short, low-inductance paths for the switching nodes is critical to minimize noise and ensure stable operation.
LTC3370EUH#TRPBF - 4-Ch 8A Configurable Buck DC/DC | Analog Devices
The LTC3370EUH#TRPBF is a highly flexible multioutput power supply IC from Analog Devices, featuring four synchronous buck converters that share eight 1A power stages, each powered from independent 2.25V to 5.5V inputs. The DC/DCs can be assigned to one of eight power configurations via pin-programmable C1-C3 pins, allowing designers to optimize output current distribution (e.g., 1A, 2A, 3A, or 4A per channel) without changing the PCB. The common buck switching frequency is programmable with an external resistor, and the device operates over a -40°C to 125°C junction temperature range. Housed in a 32-lead WFQFN exposed pad package (5mm x 5mm), this regulator is ideal for space-constrained, multi-rail systems. A configurable buck converter is a type of DC-DC step-down regulator that uses multiple internal power stages that can be combined to deliver higher current on fewer outputs. In the hierarchy of power management ICs, it sits above fixed-output regulators, offering flexibility in output count and current allocation. The LTC3370's architecture allows one to four outputs, each with up to 8A total, making it a versatile building block for systems requiring multiple low-voltage rails. Key features include four synchronous buck converters with up to 8A total output current, 2.25V to 5.5V input range, adjustable output voltage down to 0.8V, and pin-configurable output current sharing. The device achieves high efficiency (up to 95%) by integrating low RDS(ON) switches and supports Burst Mode operation for light-load efficiency. It also includes soft-start, short-circuit protection, and thermal shutdown. Technically, the LTC3370 uses a current-mode control architecture with a programmable switching frequency from 1MHz to 3MHz, allowing designers to trade off efficiency vs. component size. The C1-C3 pins set the configuration, and the MODE/SYNC pin allows external synchronization or Burst Mode. The device is available in a 32-lead WFQFN package with exposed pad for thermal management. Typical applications include solid-state drives, FPGA/ASIC power supplies, optical modules, and industrial equipment where multiple low-voltage rails are needed. Its wide input range and high efficiency make it suitable for battery-powered devices and point-of-load regulation. When designing with the LTC3370, ensure proper decoupling with 10µF ceramic capacitors on each input and output, and use the exposed pad for heat sinking. The switching frequency should be chosen to optimize efficiency and component size, and the C1-C3 pins must be set correctly for the desired output configuration.
LTC3370IUH#PBF - 4-Ch 8A Configurable Buck DC/DC | Analog Devices
The LTC3370IUH#PBF from Analog Devices is a highly flexible multioutput power supply IC that integrates four synchronous buck converters, configured to share eight 1A power stages. Each converter is powered from independent 2.25V to 5.5V inputs, and the DC/DCs are assigned to one of eight power configurations via pin-programmable C1-C3 pins. The common buck switching frequency can be programmed with an external resistor, allowing designers to optimize efficiency and component size. Housed in a 32-lead WFQFN exposed pad package, this device delivers up to 8A total output current with a minimum output voltage of 0.8V. A multioutput buck converter is a type of DC-DC switching regulator that provides multiple regulated output voltages from a single input supply. It belongs to the broader category of power management ICs, which are essential in modern electronic systems for efficient voltage conversion. Unlike linear regulators, buck converters use switching elements to achieve high efficiency, especially when there is a large difference between input and output voltages. The LTC3370's configurable architecture allows it to replace multiple discrete regulators, saving board space and simplifying power supply design. Key features of the LTC3370IUH#PBF include its four synchronous buck converters with eight 1A power stages, which can be combined to provide various output current configurations (e.g., 4x2A, 2x4A, 1x8A). The input voltage range of 2.25V to 5.5V makes it suitable for battery-powered and low-voltage systems. The device also features a programmable switching frequency, allowing trade-offs between efficiency and component size. Additionally, it includes internal compensation, soft-start, and overcurrent protection, enhancing reliability. Technically, the LTC3370 uses a current-mode control architecture with synchronous rectification, achieving high efficiency across a wide load range. The pin-programmable configuration pins (C1-C3) allow the eight power stages to be allocated to the four outputs in different combinations, providing design flexibility. The device operates over a -40°C to 125°C junction temperature range, making it suitable for industrial and automotive environments. The WFQFN package with exposed pad aids in thermal dissipation, ensuring stable operation under full load. Typical applications include portable devices, industrial equipment, and automotive electronics where multiple low-voltage rails are required. For example, it can power FPGAs, microcontrollers, and analog front-ends from a single 5V supply. Its high efficiency and small footprint make it ideal for space-constrained designs. When designing with the LTC3370, ensure proper input and output capacitor selection to maintain stability and minimize ripple. The exposed pad should be soldered to a large copper area for effective heat sinking. Also, configure the C1-C3 pins correctly to achieve the desired output current distribution.
LTC3370IUH#TRPBF - 4-Ch 8A Configurable Buck DC/DC | Analog Devices
The LTC3370IUH#TRPBF from Analog Devices is a highly flexible multioutput power supply IC that integrates four synchronous buck converters, configured to share eight 1A power stages, each powered from independent 2.25V to 5.5V inputs. The DC/DCs are assigned to one of eight power configurations via pin-programmable C1-C3 pins, enabling a wide range of output current combinations from a single 32-WFQFN package. The common buck switching frequency may be programmed with an external resistor, allowing optimization for efficiency or component size. A multioutput power supply IC is a single integrated circuit that provides multiple regulated voltage rails from one or more input supplies, commonly used in systems requiring several low-voltage rails such as FPGAs, processors, and mixed-signal designs. The LTC3370 belongs to the family of configurable multi-rail DC/DC converters, which sit within the broader category of power management ICs (PMICs) that manage power distribution, conversion, and sequencing in electronic systems. Key features include four independent synchronous buck converters with 2A maximum output per channel, a total output current of 8A, and an adjustable output voltage down to 0.8V. The device operates from a 2.25V to 5.5V input range, making it suitable for battery-powered and 5V rail applications. It offers high efficiency due to synchronous rectification, a low quiescent current of 40uA in Burst Mode operation, and a programmable switching frequency from 1MHz to 3MHz. The 32-WFQFN (5mm x 5mm) package with exposed pad provides excellent thermal performance. Technically, the LTC3370 uses a current-mode control architecture with internal compensation, simplifying the external component count. The eight power stages can be combined in various configurations (e.g., 1x8A, 2x4A, 4x2A, or asymmetric combinations) to match the load requirements of different rails. The device includes soft-start, overcurrent protection, and thermal shutdown, ensuring robust operation in demanding environments. The pin-programmable configuration eliminates the need for external resistors or digital control, reducing design complexity. Typical applications include powering FPGAs, DSPs, and microprocessors in industrial, automotive, and communications equipment, as well as portable devices requiring multiple low-voltage rails. The LTC3370's flexibility and high efficiency make it ideal for space-constrained designs where multiple point-of-load converters are needed. When designing with the LTC3370, ensure adequate input and output capacitance to maintain stability and low output ripple. The exposed pad must be soldered to a large copper area for proper heat dissipation, especially at high output currents.