ISL78420AVEZ-T7A

Product Overview

Category

ISL78420AVEZ-T7A belongs to the category of integrated circuits (ICs).

Use

This product is commonly used in automotive applications, specifically for power management.

Characteristics

• High efficiency
• Wide input voltage range
• Low quiescent current
• Overvoltage and overcurrent protection
• Thermal shutdown protection

Package

ISL78420AVEZ-T7A is available in a small outline package (SOP) with exposed pad.

Essence

The essence of ISL78420AVEZ-T7A lies in its ability to efficiently manage power in automotive systems, ensuring reliable operation and protection against various electrical faults.

Packaging/Quantity

This product is typically packaged in reels and the quantity per reel may vary depending on the manufacturer's specifications.

Specifications

• Input Voltage Range: 4.5V to 40V
• Output Voltage Range: 0.8V to 5.5V
• Quiescent Current: 50µA
• Operating Temperature Range: -40°C to +125°C
• Maximum Switching Frequency: 2.2MHz
• Number of Pins: 20

Detailed Pin Configuration

1. VIN: Input voltage pin
2. PGND: Power ground pin
3. SW: Switching node pin
4. LX: Inductor connection pin
5. FB: Feedback pin
6. EN: Enable pin
7. SS/TR: Soft-start/tracking pin
8. VCC: Supply voltage pin
9. AGND: Analog ground pin
10. COMP: Compensation pin
11. BST: Bootstrap pin
12. PGND: Power ground pin
13. PGND: Power ground pin
14. PGND: Power ground pin
15. PGND: Power ground pin
16. PGND: Power ground pin
17. PGND: Power ground pin
18. PGND: Power ground pin
19. PGND: Power ground pin
20. PGND: Power ground pin

Functional Features

• High efficiency power conversion
• Overvoltage and overcurrent protection
• Thermal shutdown protection
• Soft-start and tracking capability
• Adjustable output voltage
• Wide input voltage range

Advantages and Disadvantages

Advantages

• High efficiency leads to reduced power dissipation
• Wide input voltage range allows for compatibility with various automotive systems
• Overvoltage and overcurrent protection ensure system safety
• Thermal shutdown protection prevents damage due to excessive heat
• Soft-start and tracking capability enable smooth power-up sequences

Disadvantages

• Limited output voltage range (0.8V to 5.5V)
• Higher cost compared to traditional linear regulators

Working Principles

ISL78420AVEZ-T7A operates as a buck converter, converting the higher input voltage to a lower output voltage using pulse-width modulation (PWM) techniques. The integrated circuit regulates the output voltage by adjusting the duty cycle of the switching transistor. It also incorporates various protection features to safeguard the system against faults such as overvoltage, overcurrent, and thermal issues.

Detailed Application Field Plans

ISL78420AVEZ-T7A finds extensive application in automotive systems, including:

1. Electric power steering
2. Infotainment systems
3. Advanced driver-assistance systems (ADAS)
4. Lighting control modules
5. Engine control units (ECUs)
6. Battery management systems (BMS)

Detailed and Complete Alternative Models

1. ISL78220AVEZ-T7A
2. ISL78320AVEZ-T7A
3. ISL78520AVEZ-T7A
4. ISL78620AVEZ-T7A

These alternative models offer similar functionality and characteristics, providing flexibility in design choices for power management in automotive applications.

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