ACT8890Q4I2A0-T

Basic Information Overview

• Category: Integrated Circuit (IC)
• Use: Power Management IC
• Characteristics: High efficiency, compact size, low power consumption
• Package: QFN (Quad Flat No-leads) package
• Essence: Regulates and controls power supply in electronic devices
• Packaging/Quantity: Typically sold in reels of 2500 units

Specifications

• Input Voltage Range: 2.7V to 5.5V
• Output Voltage Range: Programmable from 0.6V to 3.3V
• Maximum Output Current: 1.2A
• Efficiency: Up to 95%
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The ACT8890Q4I2A0-T has a total of 24 pins. The pin configuration is as follows:

1. VIN: Input voltage
2. EN: Enable pin
3. PGND: Power ground
4. SW: Switching node
5. LX1: Inductor connection
6. LX2: Inductor connection
7. LX3: Inductor connection
8. LX4: Inductor connection
9. BST: Boost capacitor connection
10. FB1: Feedback pin 1
11. FB2: Feedback pin 2
12. FB3: Feedback pin 3
13. FB4: Feedback pin 4
14. VOUT1: Output voltage 1
15. VOUT2: Output voltage 2
16. VOUT3: Output voltage 3
17. VOUT4: Output voltage 4
18. AGND: Analog ground
19. SS: Soft-start capacitor connection
20. PG: Power good indicator
21. PGOOD: Power good output
22. ISET: Current limit setting
23. VREF: Reference voltage output
24. VCC: Supply voltage

Functional Features

• Integrated power management solution for portable electronic devices
• Multiple output channels with programmable voltages
• High efficiency and low power consumption
• Overcurrent protection and thermal shutdown features
• Soft-start function for smooth power-up

Advantages and Disadvantages

Advantages: - Compact size and high integration - Wide input voltage range - Programmable output voltages - Efficient power conversion - Built-in protection features

Disadvantages: - Limited maximum output current (1.2A) - Requires external components for operation - Relatively higher cost compared to simpler power management solutions

Working Principles

The ACT8890Q4I2A0-T is a power management IC that regulates and controls the power supply in electronic devices. It operates by converting the input voltage to the desired output voltage using a combination of switching regulators, control circuitry, and feedback mechanisms. The integrated design allows for efficient power conversion and precise voltage regulation.

Detailed Application Field Plans

The ACT8890Q4I2A0-T is commonly used in various portable electronic devices, including smartphones, tablets, portable media players, and handheld gaming consoles. Its compact size, high efficiency, and multiple output channels make it suitable for applications where space is limited, and power management is critical. Some specific application areas include:

1. Mobile Phones: Powering the main system, display, camera modules, and other peripherals.
2. Tablets: Regulating power for the processor, memory, display, and wireless connectivity modules.
3. Portable Media Players: Providing power to audio/video playback components, storage, and user interface.
4. Handheld Gaming Consoles: Managing power for the gaming processor, graphics, display, and audio subsystems.

Detailed and Complete Alternative Models

1. ACT8847Q4I2A0-T: Similar power management IC with a lower maximum output current of 800mA.
2. ACT8931Q4I2A0-T: Power management IC with higher maximum output current (up to 3A) and additional features such as USB Type-C support.
3. ACT8865Q4I2A0-T: Compact power management IC with integrated battery charger functionality.

These alternative models offer different specifications and features, allowing designers to choose the most suitable option based on their specific requirements.

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