LTC1503CS8-1.8

Product Overview

Category

The LTC1503CS8-1.8 belongs to the category of voltage regulators.

Use

This product is commonly used in electronic devices to regulate and stabilize voltage levels.

Characteristics

• Voltage regulation: The LTC1503CS8-1.8 provides a fixed output voltage of 1.8V.
• Efficiency: It offers high efficiency, ensuring minimal power loss during operation.
• Low dropout voltage: The regulator maintains a low dropout voltage, allowing it to operate even when the input voltage is close to the desired output voltage.
• Compact package: The LTC1503CS8-1.8 comes in an industry-standard 8-pin SOIC package, making it suitable for space-constrained applications.
• Low quiescent current: It has a low quiescent current, minimizing power consumption when the load is light.

Packaging/Quantity

The LTC1503CS8-1.8 is typically packaged in reels or tubes, containing a specified quantity of units per package. The exact packaging and quantity may vary depending on the supplier.

Specifications

• Input Voltage Range: 2.5V - 6V
• Output Voltage: 1.8V (fixed)
• Maximum Output Current: 500mA
• Dropout Voltage: 200mV at 500mA
• Quiescent Current: 75µA
• Operating Temperature Range: -40°C to 85°C
• Package Type: 8-Pin SOIC

Pin Configuration

The LTC1503CS8-1.8 features the following pin configuration:

```

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| | --| VIN | --| GND | --| FB | --| EN | --| SW | --| PGND | --| VOUT | |_______| ```

Functional Features

• Fixed Output Voltage: The LTC1503CS8-1.8 provides a stable output voltage of 1.8V, ensuring consistent performance of connected devices.
• Low Dropout Voltage: With a low dropout voltage of 200mV at 500mA, the regulator can maintain a stable output even when the input voltage is close to the desired output voltage.
• Enable Pin: The EN pin allows for easy control of the regulator's operation. When pulled low, the regulator enters a low-power shutdown mode, reducing power consumption.
• Power Good Indicator: The PGND pin serves as a power good indicator, providing a signal that indicates whether the output voltage is within the specified range.

Advantages and Disadvantages

Advantages

• High efficiency, minimizing power loss.
• Compact package suitable for space-constrained applications.
• Low quiescent current, reducing power consumption.
• Stable output voltage ensures reliable device performance.

Disadvantages

• Fixed output voltage may limit flexibility in certain applications.
• Limited maximum output current of 500mA.

Working Principles

The LTC1503CS8-1.8 operates based on a switching regulator topology. It utilizes an internal control loop to regulate the output voltage. The regulator continuously monitors the output voltage and adjusts the duty cycle of the internal switch to maintain a stable 1.8V output. This switching action allows for efficient voltage conversion while minimizing power dissipation.

Detailed Application Field Plans

The LTC1503CS8-1.8 finds application in various electronic devices and systems, including but not limited to: - Battery-powered devices - Portable consumer electronics - Embedded systems - Industrial control systems - Automotive electronics

Detailed and Complete Alternative Models

• LM1117-1.8: A popular alternative with similar specifications and a fixed output voltage of 1.8V.
• LT1763-1.8: Another alternative offering a fixed 1.8V output voltage, with lower dropout voltage and higher maximum output current compared to LTC1503CS8-1.8.

These alternative models provide similar functionality and can be considered as substitutes for the LTC1503CS8-1.8 in various applications.

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