RT9742QGJ5

Product Overview

Category: Integrated Circuit (IC)

Use: Power Management IC

Characteristics: - High efficiency - Low power consumption - Compact size - Wide input voltage range - Multiple protection features

Package: QFN (Quad Flat No-leads)

Essence: The RT9742QGJ5 is a power management IC designed to efficiently regulate and distribute power in electronic devices.

Packaging/Quantity: Available in reels, with 2500 units per reel.

Specifications

• Input Voltage Range: 2.7V - 5.5V
• Output Voltage Range: 0.6V - 3.3V
• Maximum Output Current: 1.5A
• Operating Temperature Range: -40°C to +85°C
• Efficiency: Up to 95%
• Quiescent Current: 50µA

Detailed Pin Configuration

The RT9742QGJ5 has the following pin configuration:

1. VIN: Input voltage pin
2. GND: Ground pin
3. EN: Enable pin
4. FB: Feedback pin
5. SW: Switching pin
6. VOUT: Output voltage pin

Functional Features

• Integrated synchronous step-down converter
• Adjustable output voltage
• Overcurrent protection
• Thermal shutdown protection
• Under-voltage lockout
• Soft-start function

Advantages and Disadvantages

Advantages: - High efficiency leads to reduced power consumption - Compact size allows for space-saving designs - Wide input voltage range provides flexibility in various applications - Multiple protection features ensure safe operation

Disadvantages: - Limited maximum output current of 1.5A may not be suitable for high-power applications - Requires external components for proper operation

Working Principles

The RT9742QGJ5 utilizes a synchronous step-down converter to regulate the input voltage and provide a stable output voltage. It operates by switching the input voltage through an inductor and then filtering it to obtain the desired output voltage. The integrated control circuitry ensures efficient power conversion while maintaining protection features.

Detailed Application Field Plans

The RT9742QGJ5 is commonly used in various electronic devices, including but not limited to: - Mobile phones - Tablets - Portable media players - Digital cameras - Wireless communication devices

Detailed and Complete Alternative Models

1. RT9742AGB: Similar specifications, different package (SOT-23)
2. RT9742CGF: Higher maximum output current (2A), similar specifications, different package (DFN)

These alternative models offer similar functionality and can be considered as substitutes for the RT9742QGJ5 depending on specific requirements.

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