LM5107MA

Product Overview

Category: Integrated Circuit (IC)

Use: The LM5107MA 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 - Wide input voltage range - Fast switching speed - Low quiescent current - Thermal shutdown protection - Under-voltage lockout

Package: The LM5107MA is available in a small outline package (SOP) with 8 pins.

Essence: The LM5107MA is an essential component in power electronics applications, enabling efficient power conversion by controlling the switching of MOSFETs.

Packaging/Quantity: The LM5107MA is typically sold in reels or tubes, with a quantity of 250 units per reel/tube.

Specifications

• Input Voltage Range: 4.5V to 100V
• Output Voltage Range: 0V to 100V
• Maximum Output Current: 2A
• Operating Temperature Range: -40°C to 125°C
• Supply Voltage Range: 4.5V to 100V
• Quiescent Current: 1.3mA

Pin Configuration

The LM5107MA has the following pin configuration:

1. VDD: Power supply voltage input
2. GND: Ground reference
3. HO: High-side gate drive output
4. LO: Low-side gate drive output
5. BOOT: Bootstrap capacitor connection
6. PH: Phase node connection
7. RT: Oscillator timing resistor connection
8. CT: Oscillator timing capacitor connection

Functional Features

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

Advantages and Disadvantages

Advantages: - Wide input voltage range allows for versatile applications - Fast switching speed improves efficiency - Low quiescent current reduces power consumption - Thermal shutdown protection prevents overheating - Under-voltage lockout ensures safe operation

Disadvantages: - Limited maximum output current (2A) - Requires external components for complete circuit implementation

Working Principles

The LM5107MA operates by generating the necessary gate drive voltages to control the switching of N-channel MOSFETs in a synchronous buck or boost converter. It utilizes an adjustable oscillator to set the switching frequency and provides adaptive shoot-through protection to prevent both high-side and low-side MOSFETs from conducting simultaneously.

The integrated bootstrap diode simplifies the high-side gate drive circuitry, reducing component count and board space requirements. The device also incorporates over-current protection and under-voltage lockout features to ensure safe and reliable operation.

Application Field Plans

The LM5107MA is widely used in various power electronics applications, including:

1. DC-DC converters
2. Solar inverters
3. Motor drives
4. Uninterruptible power supplies (UPS)
5. LED lighting systems
6. Battery charging circuits

Its high-voltage capability, fast switching speed, and efficient gate drive make it suitable for applications requiring high power conversion efficiency and precise control.

Alternative Models

For similar functionality and performance, alternative models to the LM5107MA include:

1. LM5113
2. IRS21844
3. MAX15062
4. FAN73832
5. UCC27211

These alternative models offer comparable features and can be considered as substitutes based on specific application requirements.

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