LTC3780IUH

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LTC3780IUH

IC POWER MANAGEMENT

  • Fabricant
  • Mfr. Partie #LTC3780IUH
  • Paquet QFN-32
  • Fiche de données
  • En stock4667

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Spécifications

Package Tube
ProductStatus Obsolete
OutputType Transistor Driver
Function Step-Up/Step-Down
OutputConfiguration Positive
Topology Buck-Boost
NumberofOutputs 1
OutputPhases 1
Voltage-Supply(Vcc/Vdd) 4V ~ 30V
Frequency-Switching 200kHz ~ 400kHz
DutyCycle(Max) 99%
SynchronousRectifier Yes
ClockSync No
ControlFeatures Current Limit, Enable, Power Good, Soft Start
OperatingTemperature -40°C ~ 125°C (TJ)
MountingType Surface Mount
Package/Case 32-WFQFN Exposed Pad

Vue d'ensemble

Description

The LTC3780IUH is a high-performance DC/DC converter controller manufactured by Analog Devices. It is designed for applications requiring a wide range of input and output voltages, offering seamless operation in buck, boost, or buck-boost modes. This controller features a unique architecture that allows it to transition smoothly between step-up and step-down conversions, making it ideal for battery-operated devices and power supply systems where the input voltage can vary significantly.
Key features of the LTC3780IUH include high efficiency over a wide range of loads, low quiescent current, and precise output voltage regulation. It supports both synchronous and non-synchronous rectification, which enhances efficiency and reduces heat generation. The device also includes protection features such as overvoltage and overcurrent protection, and thermal shutdown to ensure reliable operation under various conditions.
The LTC3780IUH is typically used in applications like portable electronics, automotive systems, and industrial power supplies where efficient power conversion and battery management are critical. Its compact form factor and robust performance make it a versatile choice for engineers designing power management solutions.

Features

The LTC3780IUH is a high-performance buck-boost DC/DC converter controller featuring seamless transitions between buck and boost modes. It supports a wide input voltage range from 4V to 38V and can output between 0.8V and 38V, making it versatile for various applications. Key features include high efficiency with synchronous rectification, current mode control for excellent line and load transient response, and a programmable switching frequency ranging from 200kHz to 600kHz. The LTC3780IUH also offers overcurrent protection, soft-start capability, and an external clock synchronization option. Its design is optimized for compact solutions with minimal external components, suitable for scenarios requiring a stable output despite variations in input voltage, such as battery-powered systems and automotive applications.

Package

The LTC3780IUH is housed in a 5mm × 5mm QFN (Quad Flat No-leads) package.

Pinout

The LTC3780IUH is a high-performance buck-boost switching regulator controller IC designed by Analog Devices (formerly Linear Technology). It comes in a 38-pin QFN (Quad Flat No-leads) package. The IC is capable of regulating output voltages above, below, or equal to the input voltage, making it versatile for various power management applications.
Functionally, the LTC3780IUH operates with a constant frequency, current mode architecture that allows seamless transitions between step-up and step-down modes. It provides high efficiency over a wide range of input and output conditions and integrates several features for enhanced performance, including programmable frequency, soft-start, and over-current protection. The controller also includes input and output voltage monitoring capabilities, making it suitable for applications where precise voltage regulation is critical.
The 38 pins of the package facilitate connectivity to various external components like inductors, capacitors, and resistors, enabling the configuration of the IC according to specific application requirements. The pin configuration supports functionalities including power input, feedback control, switching nodes, and compensation networks.

Manufacturer

The manufacturer of the LTC3780IUH is Analog Devices, Inc. Analog Devices is a multinational semiconductor company that designs and manufactures a broad range of integrated circuits (ICs) and other semiconductor devices. The company is known for its high-performance analog, mixed-signal, and digital signal processing (DSP) ICs used in various electronics applications such as industrial, automotive, communications, and consumer electronics. The LTC3780IUH is a synchronous step-up DC/DC controller, which is part of their power management product lineup.

Application

The LTC3780IUH is a high-performance, synchronous buck-boost DC/DC controller. Its application areas include battery-powered devices, automotive systems, industrial equipment, and portable electronics. It is ideal for situations requiring efficient voltage regulation over a wide input voltage range, such as battery chargers, power supplies, and LED drivers. Its ability to seamlessly transition between buck, boost, and buck-boost modes makes it suitable for applications with fluctuating input voltages.

Equivalent

Equivalent products to the LTC3780IUH, a high-performance buck-boost converter, include the LM5176 from Texas Instruments, the MAX17599 from Maxim Integrated, and the ISL85410 from Renesas Electronics. These alternatives offer similar functionalities such as wide input voltage ranges and high efficiency, suitable for applications requiring buck-boost conversion. Always verify specific requirements like voltage and current ratings, efficiency, and feature sets to ensure compatibility with your application.

Expédition

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Référence des frais d'expédition (DHL/FedEx):

DHL: Les frais d'expédition vont de 25 à 45 $ (0,5 kg), avec un délai de livraison estimé de 2 à 5 jours ouvrables.

FedEx: Les frais d'expédition varient de 25 à 40 $ (0,5 kg), avec un délai de livraison estimé de 3 à 7 jours ouvrables.

UPS: Les frais d'expédition vont de 25 à 45 $ (0,5 kg), avec un délai de livraison estimé de 3 à 7 jours ouvrables.

TNT: Les frais d'expédition varient de 25 à 65 $ (0,5 kg), avec un délai de livraison estimé de 3 à 7 jours ouvrables.

EMS: Les frais d'expédition varient de 30 à 50 $ (0,5 kg), avec un délai de livraison estimé de 7 à 15 jours ouvrables.

Courrier aérien enregistré: Le coût d'expédition est de 2 à 4 $ (0,1 kg), avec un délai de livraison estimé de 5 à 20 jours ouvrables.

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