IR3842WMTRPBF

Basic Information Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Regulator
• Characteristics: High efficiency, compact size, wide input voltage range
• Package: 5x6 mm QFN package
• Essence: Monolithic synchronous buck regulator
• Packaging/Quantity: Tape and reel, 2500 units per reel

Specifications

• Input Voltage Range: 4.5V to 21V
• Output Voltage Range: 0.6V to 16V
• Maximum Output Current: 20A
• Switching Frequency: 300kHz to 1MHz
• Efficiency: Up to 95%
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The IR3842WMTRPBF has a total of 12 pins. The pin configuration is as follows:

1. VIN: Input voltage pin
2. PGND: Power ground pin
3. BOOT: Bootstrap capacitor connection pin
4. PHASE: Phase node connection pin
5. VCC: Control supply voltage pin
6. COMP: Compensation pin
7. SS/TR: Soft-start/tracking pin
8. FB: Feedback voltage pin
9. EN: Enable pin
10. LGATE: Low-side gate driver output pin
11. PGATE: Power ground pin for the low-side gate driver
12. SW: Switching node pin

Functional Features

• Monolithic synchronous buck regulator with integrated power MOSFETs
• Adaptive dead-time control for improved efficiency
• Programmable soft-start and tracking functions
• Overcurrent protection with adjustable current limit
• Thermal shutdown protection
• Fault flag indication for easy system monitoring

Advantages and Disadvantages

Advantages: - High efficiency resulting in reduced power dissipation - Compact size suitable for space-constrained applications - Wide input voltage range allows for versatile usage

Disadvantages: - Limited maximum output current of 20A - Requires external components for proper operation

Working Principles

The IR3842WMTRPBF is a monolithic synchronous buck regulator that converts a higher input voltage to a lower output voltage. It utilizes integrated power MOSFETs to achieve high efficiency. The control circuitry adjusts the duty cycle of the switching signal to regulate the output voltage. Adaptive dead-time control minimizes power losses during switching transitions. The soft-start and tracking functions ensure a controlled startup and synchronization with other power supplies.

Detailed Application Field Plans

The IR3842WMTRPBF is commonly used in various applications, including but not limited to: - Desktop computers and servers - Telecommunications equipment - Industrial automation systems - Power distribution units - LED lighting systems - Automotive electronics

Detailed and Complete Alternative Models

1. IR3843WMTRPBF: Similar to IR3842WMTRPBF but with a higher maximum output current of 30A.
2. IR3844WMTRPBF: Similar to IR3842WMTRPBF but with a lower maximum output current of 15A.
3. IR3845WMTRPBF: Similar to IR3842WMTRPBF but with a wider input voltage range of 4.5V to 60V.

These alternative models provide flexibility in choosing the appropriate voltage regulator based on specific application requirements.

In conclusion, the IR3842WMTRPBF is a highly efficient and compact voltage regulator suitable for a wide range of applications. Its integrated features, such as adaptive dead-time control and programmable soft-start, make it a versatile choice for various power supply designs. However, its limited maximum output current and requirement for external components should be considered when selecting this IC for a particular application.