LTC1731ES8-4.2#PBF

Product Overview

Category

The LTC1731ES8-4.2#PBF belongs to the category of integrated circuits (ICs) and specifically falls under the power management ICs.

Use

This product is primarily used for power management applications, providing efficient and reliable voltage regulation.

Characteristics

• Input Voltage Range: 2.7V to 5.5V
• Output Voltage: 4.2V
• Output Current: Up to 1A
• Quiescent Current: 30µA (typical)
• Package Type: 8-Lead SOIC
• Operating Temperature Range: -40°C to 85°C

Package and Quantity

The LTC1731ES8-4.2#PBF is available in an 8-Lead Small Outline Integrated Circuit (SOIC) package. It is typically sold in reels or tubes containing a specific quantity, such as 250 units per reel.

Specifications

• Input Voltage Range: The LTC1731ES8-4.2#PBF can accept input voltages ranging from 2.7V to 5.5V.
• Output Voltage: This product provides a fixed output voltage of 4.2V.
• Output Current: It can deliver an output current of up to 1A, making it suitable for various low-power applications.
• Quiescent Current: The quiescent current, which represents the current consumed by the device when no load is connected, is typically around 30µA.
• Package Type: The LTC1731ES8-4.2#PBF comes in an 8-Lead SOIC package, which offers compactness and ease of integration into circuit designs.
• Operating Temperature Range: It can operate within a temperature range of -40°C to 85°C, making it suitable for a wide range of environments.

Pin Configuration

The LTC1731ES8-4.2#PBF features the following pin configuration:

```

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| | --| VIN GND |-- Pin 1: VIN (Input Voltage) --| VOUT GND |-- Pin 2: GND (Ground) --| FB GND |-- Pin 3: VOUT (Output Voltage) --| EN GND |-- Pin 4: GND (Ground) |___________| ```

Functional Features

• Voltage Regulation: The LTC1731ES8-4.2#PBF provides stable and accurate voltage regulation, ensuring a consistent output voltage of 4.2V.
• Low Quiescent Current: With a low quiescent current of around 30µA, this IC minimizes power consumption when the load is disconnected or in standby mode.
• Wide Input Voltage Range: It can accept input voltages ranging from 2.7V to 5.5V, allowing flexibility in various power supply configurations.
• Overcurrent Protection: The LTC1731ES8-4.2#PBF incorporates overcurrent protection, safeguarding the circuit and load from excessive current flow.
• Thermal Shutdown: In case of excessive heat, the IC features thermal shutdown protection, preventing damage due to high temperatures.

Advantages and Disadvantages

Advantages

• Efficient voltage regulation
• Low quiescent current reduces power consumption
• Wide input voltage range allows versatility in power supply design
• Overcurrent protection ensures safety
• Thermal shutdown protects against overheating

Disadvantages

• Fixed output voltage may not be suitable for all applications requiring variable voltage levels
• Limited output current capacity may restrict usage in high-power applications

Working Principles

The LTC1731ES8-4.2#PBF operates as a voltage regulator, maintaining a stable output voltage of 4.2V regardless of variations in the input voltage. It achieves this through internal circuitry that adjusts the current flow to the load based on feedback from the FB (feedback) pin.

When the input voltage is within the specified range, the IC regulates the output voltage by adjusting the duty cycle of an internal switching regulator. This ensures a consistent and reliable power supply for connected devices.

Detailed Application Field Plans

The LTC1731ES8-4.2#PBF finds application in various fields where efficient voltage regulation is required. Some potential application areas include:

1. Portable Electronics: The IC can be used in battery-powered devices such as smartphones, tablets, and portable media players to regulate the voltage supplied to the internal components.
2. IoT Devices: It can be employed in Internet of Things (IoT) devices, ensuring stable power supply for sensors, microcontrollers, and wireless communication modules.
3. Industrial Automation: The LTC1731ES8-4.