LT1761ES5-SD#TRMPBF

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The LT1761ES5-SD#TRMPBF is a low dropout positive linear regulator from Linear Technology Corporation suitable for a wide range of high precision applications.

Product Overview

The LT1761ES5-SD#TRMPBF is a 0.75A linear regulator featuring low dropout voltage and fast transient response. The output voltage can be programmed with an external resistor divider, and the device is optimized for use with small capacitor values at both the input and the output. The device features an output voltage range of 0.8V to 28V and an input voltage range of 2.25V to 28V. It also features adjustable current limit, thermal protection, and output over-voltage protection. The LT1761ES5-SD#TRMPBF comes in a low profile 6-lead SOT-23 package with a heat slug, and has an operating temperature range of -55°C to 150°C. The device operates from a wide supply voltage range, and is capable of supplying up to 0.75A of load current. The output voltage can be finely adjusted with an external resistor divider. By enabling Enable, Power Good, and Shutdown mode, the LT1761ES5-SD#TRMPBF offers high precision voltage regulation with full load and line regulation.

Features and Benefits

• Low Dropout Voltage: Allows operation with small input to output voltage differences.
• Programmable Output Voltage: Output is adjustable using an external resistor divider.
• Fast Transient Response: Adapts quickly to load and line changes.
• Enter Shutdown and Enable Mode: Shut down the output when not in use, and reactivate it quickly when needed.
• High Regulation: Output voltage is precisely regulated over full load, line, and temperature ranges.
• Protection Features: Over-voltage, current-limit, and thermal shutdown protection.
• Wide Operating Voltage Range: Works with supply voltages from 2.25V to 28V.

Applications

The LT1761ES5-SD#TRMPBF is suitable for a wide range of high precision applications, such as automotive systems, industrial systems, and battery operated systems. It is ideal for local on board power supplies, providing stable output voltages for high current analog circuits, and for powering digital logic. It is also useful for powering microprocessors and other logic devices that require precise voltage regulation.

Working Principle

The LT1761ES5-SD#TRMPBF works by providing a reference voltage that is compared with the output voltage. When the output voltage rises above the reference voltage, a Control Pin (ENABLE) will control a P-Channel MOSFET to adjust the voltage on the loop, keeping the output voltage at the correct level. A P-Channel MOSFET is used to ensure that the minimum dropout voltage is kept to a minimum, allowing operation with low input-to-output voltage differences. The output voltage can be programmed using an external resistor divider.The LT1761ES5-SD#TRMPBF also includes protection features such as thermal protection, current limit, and output over-voltage protection. When the output voltage reaches its maximum limit, the current limit circuit will limit the load current, preventing damage to the device. The device will also shut down the output if the temperature exceeds its rated safe operating temperature, protecting the device from any potential damage.

Conclusion

The LT1761ES5-SD#TRMPBF from Linear Technology Corporation is a low dropout linear regulator suitable for a wide range of high precision applications. With its adjustable output voltage, fast transient response, and protection features, the LT1761ES5-SD#TRMPBF is a highly efficient, reliable, and cost-effective solution for voltage regulation. For more information about this device, please contact Linear Technology Corporation.

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