LTC1877EMS8#TRPBF

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LTC1877EMS8#TRPBF

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規格

Package Tape & Reel (TR),Cut Tape (CT)
ProductStatus Active
Function Step-Down
OutputConfiguration Positive
Topology Buck
OutputType Adjustable
NumberofOutputs 1
Voltage-Input(Min) 2.65V
Voltage-Input(Max) 10V
Voltage-Output(Min/Fixed) 0.8V
Voltage-Output(Max) 10V
Current-Output 600mA
Frequency-Switching 550kHz
SynchronousRectifier Yes
OperatingTemperature -40°C ~ 85°C (TA)
MountingType Surface Mount
Package/Case 8-TSSOP, 8-MSOP (0.118, 3.00mm Width)

概述

Description

The LTC1877EMS8#TRPBF is a high-efficiency step-down (buck) DC/DC converter designed by Linear Technology, now part of Analog Devices. It operates from an input voltage range of 2.5V to 5.5V, making it suitable for portable electronics powered by single-cell lithium-ion batteries or multiple alkaline/NiMH cells. The device delivers up to 600mA of output current and features a fixed or adjustable output voltage, enhancing flexibility for various applications.
The LTC1877 employs a current mode control architecture, ensuring fast transient response and excellent stability over a wide range of load and voltage conditions. Its design offers high efficiency in both light and heavy load conditions, maximizing battery life in portable applications. The device includes features like low dropout operation, short-circuit protection, and thermal shutdown for enhanced reliability.
Packaged in a compact MSOP-8, the LTC1877 is well-suited for space-constrained applications. Its low quiescent current and shutdown mode further contribute to energy savings, making it a popular choice for power management in portable devices like smartphones, tablets, and other handheld electronics.

Features

The LTC1877EMS8#TRPBF is a step-down DC/DC converter from Analog Devices, known for its compact design and efficient performance. Key features include:
1. Input Voltage Range: It operates over a wide input voltage range from 2.65V to 10V.
2. Output Current: The device can deliver up to 600mA of output current, making it suitable for a variety of low-power applications.
3. Efficiency: It offers high efficiency, up to 95%, due to its synchronous rectification design, which reduces power loss.
4. Quiescent Current: The LTC1877 consumes a low quiescent current, enhancing battery life in portable applications.
5. Switching Frequency: It operates at a fixed frequency of 550kHz, allowing for the use of small external components.
6. Package: The device is available in a small MSOP-8 package, which is beneficial for space-constrained designs.
7. Additional Features: Includes features like internal soft-start, short-circuit protection, and low-dropout operation, ensuring reliable performance under various conditions.
This combination of features makes the LTC1877EMS8#TRPBF ideal for portable electronics, battery-powered devices, and other applications requiring efficient step-down voltage conversion.

Package

The LTC1877EMS8#TRPBF is packaged in an 8-lead MSOP (Mini Small Outline Package). This surface-mount package type is compact, making it suitable for applications where space is limited.

Pinout

The LTC1877EMS8#TRPBF is a step-down (buck) DC/DC converter. It is housed in an 8-lead MSOP package, meaning it has 8 pins. This device is designed to convert a higher input voltage to a lower output voltage with high efficiency.
Key functions of some of the pins are as follows:
- Vin: Input supply voltage pin.
- GND: Ground pin.
- SW (Switch): Switch node that connects to the inductor.
- VFB (Feedback): Feedback input for setting the output voltage.
- RUN/SS (Run/Soft-Start): Input for enabling the converter and implementing soft-start.
- ITH (Error Amplifier Compensation): Used for compensating the control loop.
- SYNC/MODE: Allows synchronization to an external clock or selection of operating mode.
These pins work together to regulate the voltage output, implement control and feedback, and ensure efficient operation. Always refer to the datasheet for detailed pin functions and configurations.

Manufacturer

The LTC1877EMS8#TRPBF is manufactured by Analog Devices, Inc. Analog Devices is a multinational semiconductor company that designs and manufactures integrated circuits used in electronic equipment. They specialize in data conversion, signal processing, and power management technology, catering to a wide range of industries including communications, automotive, industrial, and consumer electronics.

Application

The LTC1877EMS8#TRPBF is a step-down DC/DC converter integrated circuit. Its application areas include portable electronic devices, battery-powered systems, telecommunications equipment, distributed power systems, and embedded systems. It is commonly used in applications requiring efficient voltage regulation with minimal heat dissipation, compact size, and low quiescent current, such as mobile phones, PDAs, and other handheld gadgets.

Equivalent

The LTC1877EMS8#TRPBF is a step-down DC/DC converter from Analog Devices. Equivalent products would include step-down converters with similar specifications from other manufacturers, such as the TPS62125 from Texas Instruments, the LM3671 from Texas Instruments, or the MAX16910 from Maxim Integrated. When looking for equivalents, ensure they match in terms of input voltage range, output voltage range, current capability, and package type. Always verify the compatibility with your specific application requirements.

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