RT8128CGSP

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Regulator
• Characteristics: High efficiency, low dropout voltage, compact size
• Package: SOP-8 (Small Outline Package)
• Essence: Power management IC
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Input Voltage Range: 2.5V to 5.5V
• Output Voltage Range: 0.6V to VIN
• Output Current: Up to 1.5A
• Dropout Voltage: 200mV at 1A
• Quiescent Current: 50µA
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The RT8128CGSP features an SOP-8 package with the following pin configuration:

1. EN (Enable): Enable control pin for turning the regulator on/off.
2. FB (Feedback): Feedback pin for setting the output voltage.
3. GND (Ground): Ground reference for the IC.
4. SW (Switch): Switching node for connecting the inductor.
5. PG (Power Good): Output power good indicator.
6. COMP (Compensation): Compensation pin for stability optimization.
7. SS (Soft Start): Soft start control pin for gradual output voltage rise.
8. VIN (Input Voltage): Input voltage supply pin.

Functional Features

• High Efficiency: The RT8128CGSP offers high efficiency, minimizing power loss during voltage regulation.
• Low Dropout Voltage: With a dropout voltage as low as 200mV, the IC can maintain stable output even when the input voltage is close to the desired output voltage.
• Compact Size: The SOP-8 package allows for a compact design, making it suitable for space-constrained applications.

Advantages and Disadvantages

Advantages: - High efficiency leads to reduced power consumption. - Low dropout voltage ensures stable output even with varying input voltages. - Compact size enables integration into small form factor devices.

Disadvantages: - Limited output current capacity of up to 1.5A. - Requires external components for proper operation.

Working Principles

The RT8128CGSP is a voltage regulator IC that utilizes a switching regulator topology. It operates by converting the input voltage to a higher frequency AC signal, which is then rectified and filtered to provide a regulated output voltage. The feedback mechanism adjusts the duty cycle of the switching signal to maintain the desired output voltage.

Detailed Application Field Plans

The RT8128CGSP is commonly used in various applications, including but not limited to:

1. Portable Electronic Devices: Provides voltage regulation for battery-powered devices such as smartphones, tablets, and portable media players.
2. Computer Peripherals: Ensures stable power supply for USB hubs, external hard drives, and other computer accessories.
3. Industrial Equipment: Suitable for powering sensors, actuators, and control circuits in industrial automation systems.
4. Automotive Electronics: Used in automotive infotainment systems, lighting modules, and other vehicle electronics.
5. IoT Devices: Enables efficient power management in Internet of Things (IoT) devices, such as smart home appliances and wearable devices.

Detailed and Complete Alternative Models

1. RT8129CGSP: Similar to RT8128CGSP, but with an adjustable output voltage range.
2. RT8130CGSP: Higher output current capability of up to 3A.
3. RT8145CGSP: Dual-channel voltage regulator with independent outputs.
4. RT8150CGSP: Synchronous buck-boost converter for wider input voltage range.

These alternative models offer similar functionality and can be considered based on specific application requirements.

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