LM5100ASDX/NOPB

Product Overview

• Category: Integrated Circuit (IC)
• Use: Power Management
• Characteristics: High Voltage Gate Driver
• Package: SOIC-8
• Essence: The LM5100ASDX/NOPB is a high voltage gate driver IC designed for driving both the high-side and low-side N-channel MOSFETs in a synchronous buck or half-bridge configuration.
• Packaging/Quantity: The LM5100ASDX/NOPB is available in a standard SOIC-8 package. It is typically sold in reels of 2500 units.

Specifications

• Input Voltage Range: -0.3V to 7V
• Output Voltage Range: -0.3V to 14V
• Supply Voltage Range: 4.5V to 14V
• Operating Temperature Range: -40°C to 125°C
• Switching Frequency: Up to 1MHz
• Peak Output Current: ±2A
• Propagation Delay: 50ns (typical)

Pin Configuration

The LM5100ASDX/NOPB has the following pin configuration:

1. VDD: Supply voltage input
2. HO: High-side gate drive output
3. LO: Low-side gate drive output
4. VB: Bootstrap supply voltage input
5. GND: Ground reference
6. LIN: Logic input
7. SD: Shutdown input
8. VSS: Negative supply voltage input

Functional Features

• High Voltage Capability: The LM5100ASDX/NOPB can handle high voltages, making it suitable for applications that require driving high-side and low-side MOSFETs.
• Integrated Bootstrap Diode: The IC includes an integrated bootstrap diode, simplifying the design and reducing external component count.
• Fast Switching Speed: The LM5100ASDX/NOPB has a fast propagation delay of 50ns, enabling efficient switching in high-frequency applications.
• Under-Voltage Lockout (UVLO): The IC incorporates UVLO protection to prevent improper operation when the supply voltage is below the specified threshold.

Advantages

• High voltage capability allows for driving MOSFETs in demanding applications.
• Integrated bootstrap diode reduces external component count and simplifies the design.
• Fast switching speed enables efficient operation in high-frequency applications.
• Under-voltage lockout protection ensures proper operation under varying supply voltages.

Disadvantages

• Limited output current may not be suitable for applications requiring higher peak currents.
• Availability in only SOIC-8 package may limit compatibility with certain designs.

Working Principles

The LM5100ASDX/NOPB operates by receiving logic inputs and generating corresponding gate drive signals for the high-side and low-side MOSFETs. It utilizes a bootstrap circuit to generate the high-side gate drive voltage, eliminating the need for an external isolated power supply. The IC incorporates various protection features, such as UVLO, to ensure safe and reliable operation.

Application Field Plans

The LM5100ASDX/NOPB is commonly used in the following application fields:

1. Switching Power Supplies
2. Motor Control Systems
3. LED Lighting Drivers
4. Solar Inverters
5. Electric Vehicle Charging Stations

Alternative Models

Here are some alternative models that can be considered as substitutes for the LM5100ASDX/NOPB:

1. IR2104S: High and Low Side Driver IC
2. MAX4427: Dual High-Speed MOSFET Driver
3. FAN73832: Half-Bridge Gate Driver IC
4. UCC27211A: 120V Half-Bridge Gate Driver

These alternative models offer similar functionalities and can be used as replacements depending on specific design requirements.

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