RT9728BHGQW

Product Overview

• Category: Integrated Circuit
• Use: Power Management
• Characteristics: High Efficiency, Low Power Consumption
• Package: QFN (Quad Flat No-Lead)
• Essence: Voltage Regulator
• Packaging/Quantity: Tape and Reel, 3000 pieces per reel

Specifications

• Input Voltage Range: 2.7V to 5.5V
• Output Voltage Range: 0.6V to VIN
• Maximum Output Current: 1A
• Dropout Voltage: 200mV at 500mA
• Quiescent Current: 50µA
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The RT9728BHGQW has a total of 8 pins:

1. EN (Enable): Controls the regulator's output.
2. GND (Ground): Ground reference for the IC.
3. FB (Feedback): Connects to an external resistor divider network to set the output voltage.
4. VOUT (Output Voltage): Provides the regulated output voltage.
5. VIN (Input Voltage): Accepts the input voltage.
6. PG (Power Good): Indicates if the output voltage is within regulation limits.
7. SS (Soft Start): Controls the soft start time of the regulator.
8. BST (Bootstrap): Boosts the internal gate drive voltage.

Functional Features

• High efficiency power management solution.
• Low power consumption in standby mode.
• Fast transient response.
• Overcurrent protection.
• Thermal shutdown protection.
• Adjustable output voltage through external resistors.
• Soft start function for controlled startup.

Advantages and Disadvantages

Advantages

• High efficiency results in reduced power dissipation.
• Wide input voltage range allows for versatile applications.
• Small package size saves board space.
• Excellent load and line regulation.
• Robust protection features ensure device safety.

Disadvantages

• Limited maximum output current of 1A.
• Dropout voltage may affect performance in low input voltage scenarios.

Working Principles

The RT9728BHGQW is a voltage regulator that converts an input voltage into a regulated output voltage. It utilizes a feedback mechanism to maintain the desired output voltage level. The enable pin allows for control of the regulator's output, while the soft start feature ensures a controlled startup process. The bootstrap pin boosts the internal gate drive voltage, enabling efficient power management.

Detailed Application Field Plans

The RT9728BHGQW finds applications in various fields, including:

1. Portable electronic devices: Provides power management for smartphones, tablets, and portable media players.
2. IoT (Internet of Things) devices: Enables efficient power supply for connected devices.
3. Automotive electronics: Suitable for powering infotainment systems, navigation units, and other automotive applications.
4. Industrial equipment: Used in motor control systems, sensors, and other industrial automation applications.
5. Consumer electronics: Provides power management for TVs, set-top boxes, and audio/video equipment.

Detailed and Complete Alternative Models

1. RT9728AHGQW: Similar specifications, but with a higher maximum output current of 1.5A.
2. RT9728CHGQW: Similar specifications, but with a lower dropout voltage of 150mV at 500mA.
3. RT9728DHGQW: Similar specifications, but with a wider operating temperature range of -40°C to +125°C.

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

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