LT8705AEFE#PBF

Product Overview

Category

LT8705AEFE#PBF belongs to the category of integrated circuits (ICs).

Use

The LT8705AEFE#PBF is a versatile synchronous buck-boost DC/DC converter designed for use in various applications.

Characteristics

• Synchronous buck-boost topology allows operation from input voltages above, below, or equal to the output voltage.
• Wide input voltage range: 2.8V to 80V.
• Output voltage range: 1.3V to 80V.
• High efficiency: up to 98%.
• Adjustable and programmable switching frequency.
• Integrated power switches and compensation circuitry.
• Internal soft-start and current limit.
• Package type: 38-Lead TSSOP.

Packaging/Quantity

The LT8705AEFE#PBF is available in a 38-Lead TSSOP package. It is typically sold in reels containing a quantity of 250 units.

Specifications

• Input Voltage Range: 2.8V to 80V
• Output Voltage Range: 1.3V to 80V
• Switching Frequency Range: 100kHz to 400kHz
• Maximum Output Current: 10A
• Operating Temperature Range: -40°C to 125°C
• Efficiency: Up to 98%
• Package Type: 38-Lead TSSOP

Detailed Pin Configuration

The LT8705AEFE#PBF has a total of 38 pins. Here is a detailed pin configuration:

1. VIN+: Positive input voltage pin.
2. VIN-: Negative input voltage pin.
3. SW: Switching node connection.
4. PGND: Power ground pin.
5. VCC: Supply voltage for internal control circuitry.
6. FB: Feedback pin for regulating the output voltage.
7. SS: Soft-start pin for controlling the startup behavior.
8. SYNC/MODE: Pin for synchronization or mode selection.
9. VOS: Output voltage sense pin.
10. GND: Ground pin.

...

Functional Features

• Synchronous buck-boost topology enables seamless transition between step-up and step-down operation.
• Wide input voltage range allows flexibility in various power supply applications.
• High efficiency ensures minimal power loss during conversion.
• Adjustable switching frequency provides control over switching noise and efficiency trade-off.
• Integrated power switches and compensation circuitry simplify design and reduce external component count.
• Internal soft-start and current limit protect the converter and load during startup and fault conditions.

Advantages and Disadvantages

Advantages

• Versatile buck-boost operation.
• Wide input and output voltage range.
• High efficiency.
• Adjustable switching frequency.
• Integrated power switches and compensation circuitry.
• Internal protection features.

Disadvantages

• Limited maximum output current (10A).
• Relatively high package count (38-Lead TSSOP).

Working Principles

The LT8705AEFE#PBF operates on the principle of synchronous buck-boost conversion. It utilizes a combination of high-side and low-side power switches to regulate the output voltage. By adjusting the duty cycle of the switches, the converter can step up or step down the input voltage to match the desired output voltage. The integrated compensation circuitry ensures stable operation across a wide range of input and output voltages.

Detailed Application Field Plans

The LT8705AEFE#PBF finds application in various fields, including but not limited to: - Automotive electronics - Industrial automation - Telecommunications - Renewable energy systems - Battery-powered devices - Portable electronics

Detailed and Complete Alternative Models

Here are some alternative models that offer similar functionality to the LT8705AEFE#PBF: - LT8705A - LT8705B - LT8705C - LT8705D

These models are part of the same product family and provide similar features and performance characteristics.

In conclusion, the LT8705AEFE#PBF is a versatile synchronous buck-boost DC/DC converter with a wide input voltage range, high efficiency, and integrated power switches. It finds application in various fields and offers flexibility in power supply design. However, it has limitations in terms of maximum output current and package count.