LTC3108IDE#PBF

Product Overview

Category: Integrated Circuit (IC)

Use: Power Management

Characteristics: - Low Voltage Boost Converter - Energy Harvesting Applications - Ultra-Low Quiescent Current - Wide Input Voltage Range - Small Package Size

Package: DFN-10 (3mm x 3mm)

Essence: The LTC3108IDE#PBF is a low voltage boost converter designed for energy harvesting applications. It efficiently converts low input voltages from sources such as solar cells, thermoelectric generators, and fuel cells to higher output voltages required to power various electronic devices.

Packaging/Quantity: The LTC3108IDE#PBF is available in a DFN-10 package and is typically sold in reels of 2500 units.

Specifications

• Input Voltage Range: 225mV to 5V
• Output Voltage Range: 1.8V to 5.25V
• Maximum Output Current: 300mA
• Quiescent Current: 950nA
• Efficiency: Up to 90%
• Operating Temperature Range: -40°C to 85°C

Pin Configuration

The LTC3108IDE#PBF has the following pin configuration:

```

---

| | --| VIN VOUT |-- --| EN GND |-- --| PG FB |-- |_______________| ```

• VIN: Input Voltage
• VOUT: Output Voltage
• EN: Enable Pin
• GND: Ground
• PG: Power Good Indicator
• FB: Feedback Pin

Functional Features

• Low quiescent current allows for efficient energy harvesting even from low input voltages.
• Wide input voltage range enables compatibility with various energy sources.
• Integrated boost converter provides a regulated output voltage.
• Power good indicator (PG) signals when the output voltage is within the desired range.
• Enable pin (EN) allows for control of the converter's operation.

Advantages and Disadvantages

Advantages: - Ultra-low quiescent current minimizes power consumption during idle periods. - Wide input voltage range enhances compatibility with different energy sources. - Small package size enables compact designs in space-constrained applications. - High efficiency ensures maximum power transfer from the energy source to the load.

Disadvantages: - Limited maximum output current may restrict usage in high-power applications. - Operating temperature range may not be suitable for extreme environments.

Working Principles

The LTC3108IDE#PBF operates as a boost converter, utilizing an internal power switch and control circuitry to step up the input voltage to a higher output voltage. It employs a pulse frequency modulation (PFM) control scheme to optimize efficiency and minimize power losses. The feedback pin (FB) regulates the output voltage by adjusting the duty cycle of the internal switch.

When enabled, the LTC3108IDE#PBF continuously monitors the input voltage and adjusts the switching frequency accordingly to maintain a stable output voltage. The power good indicator (PG) signals when the output voltage reaches the desired level.

Detailed Application Field Plans

The LTC3108IDE#PBF finds applications in various fields, including:

1. Solar Energy Harvesting: The IC efficiently converts low voltage outputs from solar panels into higher voltages suitable for charging batteries or powering electronic devices in solar-powered systems.

2. Thermoelectric Generators: It can be used to harvest energy from temperature differences using thermoelectric generators, providing power for remote sensors, wireless communication modules, or IoT devices.

3. Fuel Cells: The LTC3108IDE#PBF enables the extraction of usable power from fuel cells, making it suitable for applications such as portable fuel cell chargers or backup power systems.

4. Wireless Sensor Networks: It can be utilized in energy harvesting systems for wireless sensor networks, enabling self-powered and autonomous operation without the need for battery replacement.

Detailed and Complete Alternative Models

1. LTC3105: Similar to LTC3108IDE#PBF, but with a different pin configuration and slightly different specifications.
2. LTC3330: A more advanced energy harvesting power management IC with additional features such as MPPT (Maximum Power Point Tracking) and multiple output channels.
3. BQ25504: Another energy harvesting power management IC designed specifically for solar energy harvesting applications.

These alternative models offer similar functionality and can be considered depending on specific requirements and design constraints.

Word count: 510 words