LTC3111HMSE#PBF

Product Overview

Category: Integrated Circuit (IC)

Use: Power Management

Characteristics: - High Efficiency - Low Quiescent Current - Wide Input Voltage Range - Adjustable Output Voltage - Small Package Size

Package: MSOP-10E

Essence: The LTC3111HMSE#PBF is a high-efficiency synchronous buck-boost DC/DC converter. It provides a regulated output voltage, regardless of whether the input voltage is higher or lower than the desired output voltage.

Packaging/Quantity: The LTC3111HMSE#PBF is available in a MSOP-10E package and is typically sold in reels of 2500 units.

Specifications

• Input Voltage Range: 2.5V to 15V
• Output Voltage Range: 1.8V to 15V
• Maximum Output Current: 3A
• Switching Frequency: 2MHz
• Quiescent Current: 50µA
• Operating Temperature Range: -40°C to 125°C

Pin Configuration

The LTC3111HMSE#PBF has the following pin configuration:

```

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| | --| VIN SW |-- --| GND FB |-- --| EN VOUT|-- --| PG PGD |-- |___________| ```

• VIN: Input Voltage
• SW: Switch Node
• GND: Ground
• FB: Feedback Pin
• EN: Enable Pin
• VOUT: Output Voltage
• PG: Power Good Indicator
• PGD: Power Good Delay

Functional Features

1. Buck-Boost Operation: The LTC3111HMSE#PBF can regulate the output voltage even when the input voltage is higher or lower than the desired output voltage. It can step-up or step-down the input voltage as required.

2. High Efficiency: The converter operates with high efficiency, minimizing power losses and maximizing battery life in portable applications.

3. Low Quiescent Current: The device has a low quiescent current of 50µA, reducing power consumption during standby or idle modes.

4. Wide Input Voltage Range: The LTC3111HMSE#PBF accepts input voltages ranging from 2.5V to 15V, making it suitable for a wide range of applications.

5. Adjustable Output Voltage: The output voltage can be adjusted within the range of 1.8V to 15V, providing flexibility for different system requirements.

Advantages and Disadvantages

Advantages: - Buck-boost operation allows regulation of output voltage regardless of input voltage - High efficiency minimizes power losses - Low quiescent current reduces power consumption during standby - Wide input voltage range accommodates various applications - Adjustable output voltage provides flexibility

Disadvantages: - None identified

Working Principles

The LTC3111HMSE#PBF utilizes a synchronous buck-boost topology to regulate the output voltage. It employs a combination of switches, inductors, capacitors, and control circuitry to efficiently convert the input voltage to the desired output voltage. By adjusting the duty cycle of the switches, the converter can step-up or step-down the voltage as needed.

Detailed Application Field Plans

The LTC3111HMSE#PBF is commonly used in various applications, including but not limited to: - Battery-powered devices - Portable electronics - Industrial equipment - Automotive systems - Distributed power supplies

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the LTC3111HMSE#PBF include: - LTC3112 - LTC3113 - LTC3114 - LTC3115

These models are also part of the LTC31xx series and provide buck-boost DC/DC conversion capabilities.

In conclusion, the LTC3111HMSE#PBF is a versatile and efficient buck-boost DC/DC converter suitable for a wide range of applications. Its high efficiency, low quiescent current, and adjustable output voltage make it an excellent choice for power management in various electronic systems.