LM5107SDX

Product Overview

Category: Integrated Circuit (IC)

Use: The LM5107SDX is a high-voltage gate driver IC designed for driving both high-side and low-side N-channel MOSFETs in a synchronous buck or boost converter. It provides the necessary voltage and current levels to efficiently switch the power MOSFETs.

Characteristics: - High-voltage capability - Fast switching speed - Low quiescent current - Wide operating temperature range - Small package size

Package: The LM5107SDX is available in a small outline package (SOIC) with 8 pins.

Essence: The LM5107SDX is an essential component in power electronics systems, enabling efficient power conversion in various applications.

Packaging/Quantity: The LM5107SDX is typically sold in reels containing 2500 units per reel.

Specifications

• Input Voltage Range: 4.5V to 100V
• Output Voltage Range: Up to 100V
• Maximum Output Current: 2A
• Operating Temperature Range: -40°C to 125°C
• Quiescent Current: 120µA

Pin Configuration

The LM5107SDX features the following pin configuration:

1. VDD: Power supply input for the IC.
2. HO: High-side gate drive output.
3. LO: Low-side gate drive output.
4. BOOT: Bootstrap capacitor connection for high-side gate drive.
5. PGND: Power ground.
6. LGND: Logic ground.
7. RT: Timing resistor connection for setting switching frequency.
8. CT: Timing capacitor connection for setting switching frequency.

Functional Features

• High-voltage gate driver for N-channel MOSFETs.
• Supports both high-side and low-side switching.
• Adaptive shoot-through protection.
• Integrated bootstrap diode for high-side gate drive.
• Adjustable switching frequency.
• Undervoltage lockout protection.

Advantages and Disadvantages

Advantages: - High-voltage capability allows for use in a wide range of applications. - Fast switching speed improves overall efficiency. - Low quiescent current reduces power consumption. - Small package size enables compact designs.

Disadvantages: - Limited to driving N-channel MOSFETs only. - Requires external timing components for setting switching frequency.

Working Principles

The LM5107SDX operates by receiving input voltage from the power supply (VDD) and generating high and low-side gate drive signals (HO and LO) to control the switching of N-channel MOSFETs. The integrated bootstrap diode (BOOT) simplifies the high-side gate drive circuitry, while adaptive shoot-through protection prevents both MOSFETs from conducting simultaneously, ensuring efficient operation.

Application Field Plans

The LM5107SDX is widely used in various power electronics applications, including: 1. DC-DC converters 2. Solar inverters 3. Motor drives 4. LED lighting systems 5. Battery charging circuits

Alternative Models

Other alternative models that can be considered as replacements or substitutes for the LM5107SDX include: - LM5113 - IRS21844 - UCC27211 - MAX15062

These alternative models offer similar functionality and features, providing flexibility in design choices.

In conclusion, the LM5107SDX is a versatile high-voltage gate driver IC used in power electronics systems. Its fast switching speed, low quiescent current, and small package size make it suitable for a wide range of applications. However, it is important to consider alternative models based on specific design requirements.