LM5115AMT

Product Overview

Category: Integrated Circuit (IC)

Use: LM5115AMT is a high voltage, high-side and low-side gate driver IC. It is specifically designed for driving both the high-side and low-side N-channel MOSFETs in a synchronous buck or boost converter.

Characteristics: - High voltage capability - Fast switching speed - Low propagation delay - Wide operating temperature range - Compact package size

Package: LM5115AMT is available in a small surface mount 16-pin TSSOP package.

Essence: The LM5115AMT is an essential component in power electronics applications where efficient switching of high-side and low-side MOSFETs is required.

Packaging/Quantity: The LM5115AMT is typically sold in reels containing 250 units per reel.

Specifications

• Input Voltage Range: 4.5V to 100V
• Output Voltage Range: 0V to 100V
• Maximum Supply Voltage: 110V
• Maximum Operating Temperature: 125°C
• Maximum Switching Frequency: 2MHz
• Maximum Output Current: 3A

Detailed Pin Configuration

The LM5115AMT has the following pin configuration:

1. VCC - Power supply input
2. GND - Ground reference
3. HO - High-side gate driver output
4. LO - Low-side gate driver output
5. BOOT - Bootstrap capacitor connection for high-side gate driver
6. PH - Phase node connection
7. RT - Oscillator timing resistor connection
8. CT - Oscillator timing capacitor connection
9. SS/TR - Soft-start/tracking input
10. EN - Enable input
11. PGND - Power ground reference
12. FB - Feedback input
13. COMP - Compensation node connection
14. SS - Soft-start capacitor connection
15. UVLO - Undervoltage lockout input
16. VCC - Power supply input

Functional Features

• High voltage capability allows for driving MOSFETs in high voltage applications.
• Fast switching speed enables efficient power conversion.
• Low propagation delay ensures accurate timing control.
• Wide operating temperature range makes it suitable for various environments.
• Compact package size saves board space and simplifies design.

Advantages and Disadvantages

Advantages: - High voltage capability - Fast switching speed - Wide operating temperature range - Compact package size

Disadvantages: - Limited maximum output current (3A)

Working Principles

The LM5115AMT is designed to drive both the high-side and low-side MOSFETs in a synchronous buck or boost converter. It utilizes a bootstrap capacitor to generate a voltage higher than the input voltage to drive the high-side MOSFET efficiently. The IC incorporates various protection features such as undervoltage lockout (UVLO) and overcurrent protection to ensure safe operation.

Detailed Application Field Plans

The LM5115AMT is commonly used in the following applications:

1. Switching power supplies
2. DC-DC converters
3. Motor drives
4. Solar inverters
5. LED lighting systems

Detailed and Complete Alternative Models

1. IR2104S - High and low side driver IC
2. MAX4420 - Dual MOSFET driver
3. LTC4440 - High voltage gate driver
4. FAN7388 - Half-bridge gate driver
5. UCC27211 - High-speed MOSFET driver

These alternative models offer similar functionality and can be considered as alternatives to the LM5115AMT based on specific application requirements.

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