LT1111CN8-12#PBF

Product Overview

Category

The LT1111CN8-12#PBF belongs to the category of integrated circuits (ICs) and specifically falls under the voltage regulators category.

Use

This product is primarily used as a step-up DC-DC converter. It provides a regulated output voltage that is higher than the input voltage.

Characteristics

• Input Voltage Range: 2V to 18V
• Output Voltage: 12V
• Maximum Output Current: 500mA
• Switching Frequency: 100kHz
• Package Type: DIP-8
• Operating Temperature Range: -40°C to 85°C

Package and Quantity

The LT1111CN8-12#PBF is packaged in a DIP-8 package, which stands for Dual In-line Package with 8 pins. It is commonly available in reels or tubes containing multiple units.

Specifications

• Input Voltage Range: 2V to 18V
• Output Voltage: 12V
• Output Current: Up to 500mA
• Switching Frequency: 100kHz
• Efficiency: Up to 90%
• Quiescent Current: 3.5mA
• Shutdown Current: 20μA
• Soft-Start Time: 10ms
• Operating Temperature Range: -40°C to 85°C
• Package Type: DIP-8

Pin Configuration

The LT1111CN8-12#PBF has eight pins arranged as follows:

```

---

| | --| Vout |-- --| GND |-- --| Vin |-- --| FB |-- --| SW |-- --| NC |-- --| NC |-- |_______| ```

• Vout: Output Voltage
• GND: Ground
• Vin: Input Voltage
• FB: Feedback Pin
• SW: Switching Pin
• NC: No Connection

Functional Features

• Step-up DC-DC Converter: The LT1111CN8-12#PBF efficiently boosts the input voltage to a regulated 12V output.
• Wide Input Voltage Range: It can accept input voltages ranging from 2V to 18V, making it versatile for various applications.
• High Efficiency: With an efficiency of up to 90%, it minimizes power losses during voltage conversion.
• Low Quiescent Current: The quiescent current of 3.5mA ensures low power consumption during operation.
• Soft-Start Functionality: The soft-start time of 10ms prevents excessive inrush current during startup.

Advantages

• Compact Size: The DIP-8 package allows for easy integration into electronic circuits.
• Wide Input Voltage Range: Enables compatibility with a broad range of input sources.
• High Efficiency: Reduces power dissipation and improves overall system efficiency.
• Soft-Start Functionality: Protects components from excessive current during startup.

Disadvantages

• Limited Maximum Output Current: The LT1111CN8-12#PBF can provide a maximum output current of 500mA, which may not be sufficient for high-power applications.
• Fixed Output Voltage: The output voltage is fixed at 12V, limiting its flexibility for applications requiring different output voltages.

Working Principles

The LT1111CN8-12#PBF operates as a step-up DC-DC converter using a switching regulator topology. It utilizes an internal oscillator to control the switching of an external power MOSFET. This switching action converts the input voltage to a higher regulated output voltage. The feedback pin (FB) monitors the output voltage and adjusts the duty cycle of the switching signal to maintain a stable 12V output.

Application Field Plans

The LT1111CN8-12#PBF finds applications in various fields, including: 1. Battery-powered devices: It can be used to step up battery voltages to power higher voltage components. 2. Automotive electronics: Enables voltage conversion for automotive systems requiring a regulated 12V supply. 3. Industrial equipment: Provides a stable 12V source for powering control circuits and sensors. 4. Telecommunications: Used in telecom infrastructure to convert lower voltages to 12V for powering communication modules.

Alternative Models

There are several alternative models available that offer similar functionality to the LT1111CN8-12#PBF. Some notable alternatives include: - LM2577: A popular step-up DC-DC converter with adjustable output voltage. - MC34063: Another widely used integrated circuit for step-up voltage conversion. - MAX1771: Offers high efficiency and adjustable output voltage options.

These alternative models provide flexibility in terms of output voltage adjustment and may better suit specific application requirements.

In conclusion, the LT1111CN8-12#P