LTC1728ES5-1.8#TRMPBF

Overview

Product Category: Integrated Circuit (IC)

Use: Voltage Regulator

Characteristics: - Low Dropout Voltage - Low Quiescent Current - Adjustable Output Voltage - Small Package Size - High Accuracy

Package: SOT-23-5

Essence: The LTC1728ES5-1.8#TRMPBF is a low dropout voltage regulator IC designed to provide a stable output voltage with low quiescent current.

Packaging/Quantity: Tape & Reel, 3000 units per reel

Specifications

• Input Voltage Range: 2.5V to 6V
• Output Voltage Range: 1.8V
• Dropout Voltage: 200mV at 100mA Load Current
• Quiescent Current: 30µA
• Line Regulation: ±0.02%
• Load Regulation: ±0.05%
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The LTC1728ES5-1.8#TRMPBF has the following pin configuration:

```

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| | --| VIN GND |-- Pin 1: Ground --| VOUT EN |-- Pin 2: Enable --| FB |-- Pin 3: Feedback --| NC |-- Pin 4: No Connection --| VIN |-- Pin 5: Input Voltage |___________| ```

Functional Features

• Low dropout voltage allows for efficient regulation even when the input voltage is close to the desired output voltage.
• Low quiescent current ensures minimal power consumption during standby or idle mode.
• Adjustable output voltage provides flexibility in various applications.
• Small package size enables space-saving designs.
• High accuracy ensures precise voltage regulation.

Advantages

• Stable output voltage even with low input voltage.
• Low power consumption during standby or idle mode.
• Flexibility in setting the desired output voltage.
• Compact size for space-constrained applications.
• High accuracy for precise voltage regulation.

Disadvantages

• Limited to a fixed output voltage of 1.8V.
• Not suitable for applications requiring higher output voltages.

Working Principles

The LTC1728ES5-1.8#TRMPBF operates as a low dropout voltage regulator by maintaining a stable output voltage despite variations in the input voltage. It achieves this through a combination of internal circuitry and feedback control.

When the input voltage is applied, the regulator compares it to a reference voltage and adjusts the internal circuitry to maintain the desired output voltage. The feedback pin allows for fine-tuning of the output voltage by connecting an external resistor divider network.

The low dropout voltage ensures efficient regulation even when the input voltage is close to the desired output voltage. The low quiescent current minimizes power consumption during standby or idle mode, making it suitable for battery-powered devices.

Detailed Application Field Plans

The LTC1728ES5-1.8#TRMPBF is commonly used in various electronic devices and systems that require a stable 1.8V power supply. Some typical application fields include:

1. Mobile Devices: Smartphones, tablets, portable media players.
2. IoT Devices: Wearable devices, sensors, smart home devices.
3. Embedded Systems: Microcontrollers, digital cameras, audio/video equipment.
4. Communication Systems: Wireless routers, modems, networking equipment.
5. Automotive Electronics: Infotainment systems, navigation systems, dashboard displays.

Detailed and Complete Alternative Models

1. LTC1728ES5-2.5#TRMPBF: Provides a fixed output voltage of 2.5V.
2. LTC1728ES5-3.3#TRMPBF: Provides a fixed output voltage of 3.3V.
3. LTC1728ES5-5#TRMPBF: Provides a fixed output voltage of 5V.

These alternative models offer different fixed output voltages to cater to specific application requirements.

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