LT3844IFE

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LT3844IFE

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  • メーカー品番 #LT3844IFE

  • データシート LT3844IFE DataSheet

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仕様

属性
Brand Analog Devices
ProductType Switching Voltage Regulators
Subcategory PMIC - Power Management ICs
MountingStyle SMD/SMT
Package/Case TSSOP-16
MinimumOperatingTemperature - 40 C
MaximumOperatingTemperature + 125 C
Height 1.1 mm
Topology Boost, Buck, Inverting, SEPIC
OutputVoltage 36 V
OutputCurrent 5 A
NumberofOutputs 1 Output
InputVoltage-Min 4 V
InputVoltage-Max 60 V
SwitchingFrequency 100 kHz to 500 kHz
ShippingRestrictions Mouser does not presently sell this product in your region.
Series LT3844
OperatingSupplyCurrent 120 uA
FactoryPackQuantity:FactoryPackQuantity 95

概要

Description

The LT3844IFE is a high-performance, adjustable, synchronous step-down switching regulator from Analog Devices (formerly Linear Technology). It is designed to efficiently convert a wide input voltage range (4.5V to 60V) into a regulated output voltage, making it suitable for various applications, including industrial, automotive, and telecommunications.
Key features include a high efficiency (up to 95%), a programmable output voltage range (0.8V to 15V), and the ability to deliver up to 2A of output current. The device includes an internal compensation network for stability, a soft-start feature to reduce inrush current, and a power-good output for system monitoring.
The LT3844IFE also supports parallel operation for increased current capability and features robust protection mechanisms, including overcurrent protection, thermal shutdown, and undervoltage lockout. Its compact package and integrated components simplify design and reduce board space requirements. This makes the LT3844IFE an excellent choice for designers seeking reliable and efficient power management solutions.

Equivalent

Equivalent products to the LT3844IFE chip include the LM5118, MAX15036, and TPS40055. These devices serve similar functions in high-voltage, step-down (buck) converter applications, offering comparable features such as current mode control, high efficiency, and wide input voltage ranges. Always verify specifications to ensure compatibility for your specific application.

Features

The LT3844IFE is a high-performance DC-DC controller designed for boost, flyback, and SEPIC applications. Key features include:
1. Wide Input Voltage Range: Operates from 4.5V to 60V, suitable for various battery and power supply applications.
2. Adjustable Output Voltage: Allows for flexibility in setting the desired output voltage.
3. High Efficiency: Designed for efficiencies up to 95%, reducing heat and increasing reliability.
4. Current Mode Control: Provides improved transient response and simplifies compensation.
5. Integrated Soft-Start: Reduces inrush current during startup, enhancing system reliability.
6. Frequency Adjustability: Supports adjustable switching frequencies from 100 kHz to 1 MHz for design optimization.
7. Thermal Shutdown: Protects against overheating to ensure safe operation.
8. Power Good Indicator: Monitors output voltage, providing a status signal for system integration.
Overall, the LT3844IFE is ideal for compact, high-efficiency power solutions in demanding environments.

Pinout

The LT3844IFE is a high-performance, step-down (buck) switching regulator from Analog Devices. It features a 28-pin (TSSOP package) configuration.
Key pin functions include:
1. VIN: Supply voltage input.
2. SW: Switch output connected to the inductor.
3. GND: Ground reference.
4. COMP: Compensation network connection for stability.
5. FB: Feedback voltage input to regulate output voltage.
6. Rset: Resistor connection for setting the output current limit.
7. SENSE+ / SENSE-: Current sensing inputs for overcurrent detection.
8. SS: Soft-start pin for controlling startup time.
9. RUN: Enable pin to turn the device on/off.
10. VOUT: Regulated output voltage.
The LT3844IFE is designed for high efficiency and fast transient response in power management applications, making it suitable for a variety of systems requiring regulated DC output.

Manufacturer

The LT3844IFE is manufactured by Analog Devices, Inc. Analog Devices is a global company specializing in high-performance analog, mixed-signal, and digital signal processing (DSP) integrated circuits. Founded in 1965, the company is headquartered in Norwood, Massachusetts, and is known for its innovative technologies that cater to various industries, including automotive, communications, healthcare, and industrial automation. Analog Devices focuses on providing solutions for signal processing, data conversion, and power management, making it a key player in the semiconductor industry. The LT3844IFE itself is a high voltage step-down regulator, designed for applications requiring efficient power management.

Application

The LT3844IFE is a high-performance, dual-output synchronous step-down switching regulator controller designed for various applications, including:
1. Power Management: Efficiently converts higher input voltages to lower output voltages for microcontrollers, DSPs, and FPGAs.
2. Telecommunications: Supplies power for base stations and networking equipment.
3. Industrial Automation: Provides reliable power for sensors, actuators, and control systems.
4. Consumer Electronics: Used in power supplies for gadgets and appliances.
5. Automotive: Powers infotainment systems and advanced driver-assistance systems (ADAS).
Its versatility and efficiency make it suitable for a wide range of applications in diverse industries.

Package

The LT3844IFE comes in a 28-lead TSSOP (Thin Shrink Small Outline Package) package type. This compact form factor is designed for efficient thermal performance and reduced space on printed circuit boards.

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