LT1776IS8

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LT1776IS8

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Thông số kỹ thuật

Minimum Operating Temperature - 40 C
Maximum Operating Temperature + 125 C
Series LT1776
Brand Analog Devices
Product Type Switching Voltage Regulators
Subcategory PMIC - Power Management ICs
Mounting Style SMD/SMT
Operating Supply Current 3.2 mA
Topology Buck
Output Voltage Adjustable
Output Current 560 mA
Number of Outputs 1 Output
Input Voltage - Min 7.4 V
Input Voltage - Max 40 V
Switching Frequency 200 kHz
Height 1.75 mm
Delivery Restrictions Mouser does not sell this product in your region.
Package/Case SOIC-8

Tổng quan

Description

The LT1776IS8 is a high-efficiency step-down (buck) switching regulator produced by Analog Devices, originally by Linear Technology. It is designed to convert higher DC input voltages to lower DC output voltages with high efficiency, typically used in power management applications. The device can deliver up to 700 mA of output current and operates over a wide input voltage range of 7.4V to 25V, making it suitable for a variety of applications including battery-powered devices and distributed power systems.
The LT1776IS8 features a fixed frequency operation at 200kHz, which allows for smaller external components compared to low-frequency regulators and improves transient response. The device also incorporates current mode control, which provides excellent line and load regulation. It includes protection features such as soft-start, thermal shutdown, and current limiting to enhance reliability.
Packaged in an 8-lead SOIC, it offers a compact solution for space-constrained applications. Its design ensures minimal external components are needed, simplifying the overall complexity and cost of the power supply design. The LT1776IS8 is particularly valued for its efficiency, reliability, and ease of use in various electronic applications.

Features

The LT1776IS8 is a step-down (buck) switching regulator integrated circuit from Analog Devices. Key features include:
1. Wide Input Voltage Range: Operates from 7.4V to 60V, making it suitable for a variety of applications, including industrial and automotive systems.
2. Output Voltage: Adjustable output voltage down to 1.23V through an external resistor divider, allowing flexibility for different applications.
3. Efficiency: High efficiency due to its switching regulator characteristics, reducing power loss and improving thermal performance.
4. Current Limit: Built-in current limiting to protect against overcurrent conditions.
5. Switching Frequency: Operates at a fixed frequency of 200kHz, providing a good balance between efficiency and size of external components.
6. Thermal Protection: Incorporates thermal shutdown to prevent damage from overheating.
7. Package: Available in an 8-pin SOIC package, facilitating compact design and simple integration into circuits.
8. Applications: Suitable for battery-powered systems, power supplies, and distributed power systems due to its robustness and versatility.
These features make the LT1776IS8 a reliable choice for efficient voltage regulation in demanding environments.

Package

The LT1776IS8 is an integrated circuit in an SO-8 package. The SO-8 (Small Outline 8) package is a surface-mount package with 8 leads.

Pinout

The LT1776IS8 is a monolithic buck-mode switching regulator IC designed by Linear Technology, now part of Analog Devices. It is housed in an 8-pin SOIC (Small Outline Integrated Circuit) package. The pin functions are as follows:
1. SW (Pin 1): Switch pin, connected to the inductor.
2. GND (Pin 2): Ground pin.
3. SENSE (Pin 3): Current sense pin, monitors the current through the inductor.
4. VC (Pin 4): Compensation pin, used for frequency compensation of the feedback loop.
5. VFB (Pin 5): Feedback pin, used to set the output voltage.
6. SHDN (Pin 6): Shutdown pin, used to enable or disable the regulator.
7. VIN (Pin 7): Input voltage pin, supplies power to the IC.
8. N/C (Pin 8): No connection or unused.
This IC is primarily used for efficient step-down voltage conversion in various electronic devices, including portable gadgets and distributed power systems.

Manufacturer

The LT1776IS8 is manufactured by Analog Devices, Inc. Analog Devices is a multinational semiconductor company that specializes in the design and manufacturing of analog, mixed-signal, and digital signal processing (DSP) integrated circuits. The company focuses on developing solutions that serve various markets, including industrial, automotive, communications, and consumer electronics. Analog Devices is known for its expertise in areas such as data conversion, signal processing, power management, and radio frequency (RF) technology.

Application

The LT1776IS8 is a step-down (buck) switching regulator designed for efficient voltage regulation in various applications. Key application areas include power management in telecommunications equipment, industrial systems, automotive electronics, and consumer electronics. It is well-suited for situations requiring reliable DC output from a higher voltage source, such as battery-powered devices, embedded systems, and microcontroller-based applications. Its compact size and high efficiency make it ideal for space-constrained designs.

Equivalent

The LT1776IS8 is a step-down switching regulator from Analog Devices (formerly Linear Technology). Equivalent products might include similar buck converters such as the TPS54160 from Texas Instruments, the LM2675 from Texas Instruments, and the MC34063 from ON Semiconductor. Comparing specifications like input voltage range, output current, and switching frequency will help in selecting the closest match. Always consult datasheets to ensure compatibility with your specific application requirements.

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