LTC3855IUJ#TRPBF

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LTC3855IUJ#TRPBF

IC REG CTRLR BUCK 40QFN

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Spécifications

Series PolyPhase®
Part Status Active
Output Type Transistor Driver
Function Step-Down
Output Configuration Positive
Topology Buck
Number of Outputs 2
Output Phases 2
Voltage - Supply (Vcc/Vdd) 4.5V ~ 38V
Frequency - Switching 250kHz ~ 770kHz
Duty Cycle (Max) 95%
Synchronous Rectifier Yes
Clock Sync No
Control Features Current Limit, Enable, Frequency Control, Phase Control, Power Good, Soft Start, Tracking
Operating Temperature -40°C ~ 125°C (TJ)
Mounting Type Surface Mount
Package / Case 40-WFQFN Exposed Pad
Supplier Device Package 40-QFN (6x6)
Base Product Number LTC3855

Vue d'ensemble

Description

The LTC3855IUJ#TRPBF is a high-performance, dual-output synchronous step-down DC/DC controller designed by Analog Devices. It features a wide input voltage range of 4.5V to 60V, making it suitable for various applications, including industrial, automotive, and telecommunications. The controller supports a current mode architecture, enabling precise control and excellent transient response.
Key features include adjustable output voltage, programmable switching frequency, and built-in protection mechanisms such as over-voltage, under-voltage, and over-current protection. The LTC3855 also supports a power good indicator, soft-start functionality, and can be configured for parallel operation to meet higher current demands.
With its efficiency and flexibility, the LTC3855 is ideal for applications requiring reliable power management in complex systems. It is typically housed in a compact 32-lead HTQFP package, facilitating easy integration into various circuit designs.

Features

The LTC3855IUJ#TRPBF is a high-performance, synchronous step-down (buck) DC-DC controller designed for converting a wide input voltage range to a regulated output. Key features include:
1. Input Voltage Range: Operates from 4.5V to 60V, making it suitable for various applications.
2. Output Voltage Control: Adjustable output voltage down to 0.8V with an accurate reference voltage.
3. Current Mode Control: Provides fast transient response and easy compensation.
4. Dual Output Channels: Supports power delivery for multiple outputs with phase interleaving.
5. High Efficiency: Achieves efficiency levels over 95%, reducing thermal management requirements.
6. Programmable Switching Frequency: Adjustable from 250kHz to 1MHz, allowing design flexibility.
7. Power Good Indicator: Monitors output voltage and signals when it falls outside preset limits.
8. Compact Package: Available in a 28-lead HTQFN package for space-constrained applications.
These features make the LTC3855 suitable for industrial, automotive, and telecom power supply designs.

Package

The LTC3855IUJ#TRPBF is packaged in a 28-pin HTQFN (Heat Sink Thin Quad Flat No-lead) package, which is designed for efficient thermal performance and compact surface-mount applications.

Pinout

The LTC3855IUJ#TRPBF is a dual step-down (buck) synchronous controller with a total of 32 pins. Designed for high-efficiency power management, it can operate from a wide input voltage range and provides precise output regulation.
Key functions include:
1. Dual Output Control: Can control two outputs with programmable voltage and current settings.
2. Current Mode Control: Ensures fast transient response and improved stability.
3. Power Good Indicator: Monitors output voltage levels.
4. Synchronization: Can synchronize with an external clock for minimized noise.
5. Soft-Start Feature: Reduces inrush current during startup.
The LTC3855 is suitable for applications in industrial, telecom, and high-performance computing. For detailed specifications and functionalities, refer to the manufacturer's datasheet.

Manufacturer

The LTC3855IUJ#TRPBF is manufactured by Analog Devices, Inc. (ADI). Analog Devices is a multinational semiconductor company that specializes in data conversion, signal processing, and power management solutions. Founded in 1965, the company is known for its high-performance analog, mixed-signal, and digital signal processing (DSP) integrated circuits. ADI serves a variety of industries, including automotive, telecommunications, industrial automation, healthcare, and consumer electronics. The LTC3855 is a high-performance step-down voltage regulator, showcasing ADI's expertise in power management technologies.

Application

The LTC3855IUJ#TRPBF is a dual-output synchronous step-down voltage regulator designed for high-performance applications. Its primary application areas include power management in telecommunications, industrial equipment, and automotive systems. It is also suitable for powering FPGAs, processors, and other digital loads, where efficient voltage regulation and high current capability are essential. Additionally, it can be used in battery-powered devices requiring efficient power supply solutions.

Equivalent

The LTC3855IUJ#TRPBF is a dual step-down controller. Equivalent products include the LM25118 from Texas Instruments, the TPS53318 from Texas Instruments, and the MAX15123 from Maxim Integrated. Other alternatives are the ISL69138 from Renesas and the LTC3866 from Analog Devices. It's important to compare specifications like voltage range, current capability, and features to ensure compatibility.

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.

Paiements

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