MP4655GY

Product Overview

• Category: Integrated Circuit (IC)
• Use: Power Management
• Characteristics: High efficiency, compact size, versatile functionality
• Package: 16-pin QFN (Quad Flat No-Lead)
• Essence: Power management IC designed for various applications
• Packaging/Quantity: Available in reels of 2500 units

Specifications

• Input Voltage Range: 2.7V to 5.5V
• Output Voltage Range: 0.6V to VIN
• Maximum Continuous Output Current: 3A
• Switching Frequency: 1.5MHz
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The MP4655GY features a 16-pin QFN package with the following pin configuration:

1. EN (Enable): Enable control pin
2. FB (Feedback): Feedback voltage input pin
3. SS (Soft Start): Soft start control pin
4. PGND (Power Ground): Power ground connection
5. SW (Switch Node): Switching node connection
6. LX (Inductor Connection): Inductor connection pin
7. VOUT (Output Voltage): Output voltage pin
8. VIN (Input Voltage): Input voltage pin
9. AGND (Analog Ground): Analog ground connection
10. COMP (Compensation): Compensation pin for stability control
11. BST (Bootstrap): Bootstrap capacitor connection
12. PG (Power Good): Power good indicator output
13. NC (No Connect): Not connected pin
14. NC (No Connect): Not connected pin
15. NC (No Connect): Not connected pin
16. NC (No Connect): Not connected pin

Functional Features

• Wide input voltage range allows for flexibility in power source selection.
• High efficiency conversion ensures minimal power loss.
• Integrated soft start feature prevents inrush current during startup.
• Power good indicator provides feedback on output voltage stability.
• Overcurrent protection safeguards against excessive load conditions.
• Thermal shutdown protection prevents IC damage due to overheating.

Advantages and Disadvantages

Advantages: - High efficiency operation - Compact size for space-constrained applications - Versatile functionality for various power management needs - Integrated protection features enhance reliability

Disadvantages: - Limited maximum continuous output current (3A) - Operating temperature range may not be suitable for extreme environments

Working Principles

The MP4655GY is a step-down (buck) converter that utilizes a high-frequency switching regulator to efficiently convert input voltage to a lower output voltage. It employs pulse width modulation (PWM) control to regulate the output voltage based on the feedback received from the FB pin. The soft start feature gradually increases the output voltage during startup to prevent excessive inrush current. The integrated protection mechanisms ensure safe operation under different load conditions.

Detailed Application Field Plans

The MP4655GY can be applied in various fields, including but not limited to: - Portable electronic devices - Battery-powered systems - IoT (Internet of Things) devices - Industrial automation - Automotive electronics

Detailed and Complete Alternative Models

1. MP4656GY: Similar specifications and features, with an extended operating temperature range (-40°C to +125°C).
2. MP4654GY: Lower maximum continuous output current (2A), suitable for less demanding applications.
3. MP4657GY: Higher maximum continuous output current (4A), ideal for power-hungry applications.

These alternative models provide options based on specific requirements and operating conditions.

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