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LTC1771EMS8
+BOMSwitching Voltage Regulators LTC1771 - 10- A Quiescent Current High Efficiency Step-Down DC/DC Controller
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Nhà sản xuấtAnalog Devices
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Ông. Phần #LTC1771EMS8
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Bảng dữ liệu LTC1771EMS8 DataSheet
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Description
Key features include a fixed frequency operation of 550kHz, which facilitates the use of small inductors and capacitors, contributing to a reduced overall footprint. Its current-mode architecture ensures fast transient response and good loop stability. It also provides a maximum output current of up to 600mA, with an adjustable output voltage via an external resistor divider network.
Moreover, the LTC1771 includes features such as low shutdown current, internal soft-start, and overcurrent protection, enhancing its reliability and efficiency. The device is available in an 8-lead MSOP package, making it suitable for space-constrained designs.
Equivalent
1. LM2596 by Texas Instruments - A step-down voltage regulator with similar functionality.
2. MC34063A by ON Semiconductor - A versatile DC/DC converter that can be configured as a buck converter.
3. TPS5430 by Texas Instruments - Provides similar step-down power conversion.
4. MAX639 by Maxim Integrated - A step-down switching regulator with similar applications.
These alternatives may vary slightly in specifications, so it's important to verify the requirements for specific applications.
Features
Key features include a low shutdown current of 10µA, high efficiency of up to 95%, and the ability to deliver output currents up to several amperes with appropriate external components. The LTC1771EMS8 also supports Burst Mode operation, optimizing efficiency at light loads. It comes with built-in soft-start and current limiting features to protect against inrush currents and short circuits. The device is available in a compact MSOP-8 package, making it suitable for space-constrained designs. Overall, the LTC1771EMS8 is ideal for battery-powered and portable applications requiring efficient power conversion.
Pinout
1. VIN: Input supply voltage.
2. SW: Switch node connection to the inductor.
3. GND: Ground pin.
4. FB: Feedback input for output voltage regulation.
5. ISET: Sets the maximum current limit.
6. SENSE: Current sense input.
7. RUN/SS: Run/soft-start control input.
8. SYNC/MODE: Synchronization and mode selection pin.
These pins assist in the regulation and control of the converter's operation, enabling efficient step-down conversion from the input voltage to a regulated lower output voltage.
Manufacturer
Application
1. Portable Electronics: Used in devices such as smartphones, tablets, and laptops for efficient power management.
2. Battery-Powered Devices: Ideal for extending battery life in gadgets like digital cameras and handheld instruments.
3. Telecommunications: Employed in modems and routers to ensure stable power supply.
4. Automotive Systems: Utilized in infotainment and navigation systems for efficient voltage regulation.
5. Industrial Equipment: Supports various low-power industrial applications requiring DC/DC conversion.
These application areas benefit from the LTC1771EMS8's compact size, high efficiency, and low component count.