IR3840WMTRPBF

Product Overview

Category: Integrated Circuit (IC)

Use: Power Management IC

Characteristics: - High efficiency voltage regulator - Wide input voltage range - Low dropout voltage - Adjustable output voltage - Overcurrent and thermal protection - Small package size

Package: 40-Lead QFN (Quad Flat No-Lead)

Essence: The IR3840WMTRPBF is a power management IC designed to regulate voltage efficiently in various electronic devices.

Packaging/Quantity: The IR3840WMTRPBF is typically sold in reels containing 250 units per reel.

Specifications

• Input Voltage Range: 4.5V to 28V
• Output Voltage Range: 0.6V to 5.5V
• Maximum Output Current: 40A
• Dropout Voltage: 200mV at 20A
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The IR3840WMTRPBF has a 40-lead QFN package with the following pin configuration:

1. VIN: Input voltage
2. GND: Ground
3. PGND: Power ground
4. VCC: Supply voltage
5. BOOT: Bootstrap capacitor connection
6. PHASE: Phase node connection
7. LGATE: Low-side gate driver output
8. PGND: Power ground
9. VSENSE: Current sense input
10. COMP: Compensation network connection
11. FB: Feedback voltage input
12. SS/TR: Soft-start/tracking control
13. EN: Enable control
14. OCSET: Overcurrent protection threshold setting
15. VDRV: Gate driver supply voltage
16. VDRV: Gate driver supply voltage
17. VDRV: Gate driver supply voltage
18. VDRV: Gate driver supply voltage
19. VDRV: Gate driver supply voltage
20. VDRV: Gate driver supply voltage
21. VDRV: Gate driver supply voltage
22. VDRV: Gate driver supply voltage
23. VDRV: Gate driver supply voltage
24. VDRV: Gate driver supply voltage
25. VDRV: Gate driver supply voltage
26. VDRV: Gate driver supply voltage
27. VDRV: Gate driver supply voltage
28. VDRV: Gate driver supply voltage
29. VDRV: Gate driver supply voltage
30. VDRV: Gate driver supply voltage
31. VDRV: Gate driver supply voltage
32. VDRV: Gate driver supply voltage
33. VDRV: Gate driver supply voltage
34. VDRV: Gate driver supply voltage
35. VDRV: Gate driver supply voltage
36. VDRV: Gate driver supply voltage
37. VDRV: Gate driver supply voltage
38. VDRV: Gate driver supply voltage
39. VDRV: Gate driver supply voltage
40. VDRV: Gate driver supply voltage

Functional Features

• High efficiency power conversion
• Fast transient response
• Adjustable output voltage through external resistors
• Overcurrent protection with adjustable threshold
• Thermal shutdown protection
• Soft-start and tracking control for smooth startup

Advantages and Disadvantages

Advantages: - Wide input voltage range allows for versatile applications - High efficiency reduces power loss and improves energy efficiency - Compact package size saves board space - Overcurrent and thermal protection ensure device safety

Disadvantages: - Limited maximum output current of 40A may not be suitable for high-power applications - Requires external components for proper operation

Working Principles

The IR3840WMTRPBF operates as a voltage regulator by converting the input voltage to a regulated output voltage. It utilizes a control loop to maintain the desired output voltage by adjusting the duty cycle of an internal switching transistor. The feedback voltage is compared to a reference voltage, and any deviation is corrected by adjusting the duty cycle. This ensures a stable and accurate output voltage.

Detailed Application Field Plans

The IR3840WMTRPBF is commonly used in various applications, including: - Server power supplies - Networking equipment - Industrial automation systems - Telecommunications devices - Gaming consoles - High-performance computing

Detailed and Complete Alternative Models

Some alternative models that can be considered as alternatives to the IR3840WMTRPBF are: - IR3842WMTRPBF - IR3844WMTRPBF - IR3846WMTRPBF - IR3848WMTRPBF - IR3850WMTRPBF

These models offer similar functionality and characteristics, providing flexibility in design choices.

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