Richtek USA Inc.
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RT9742CNGJ5
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RT9742CNGJ5

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-16

Essence: The RT9742CNGJ5 is a power management IC designed for various applications requiring efficient power conversion and management.

Packaging/Quantity: The RT9742CNGJ5 is typically packaged in reels of 2500 units.

Specifications

The RT9742CNGJ5 has the following specifications:

  • Input Voltage Range: 2.7V to 5.5V
  • Output Voltage Range: 0.6V to VIN
  • Maximum Output Current: 1A
  • Switching Frequency: 1.2MHz
  • Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The RT9742CNGJ5 has a total of 16 pins, each serving a specific function. The pin configuration is as follows:

  1. VIN: Input voltage pin
  2. GND: Ground pin
  3. EN: Enable pin
  4. FB: Feedback pin
  5. SW: Switching pin
  6. PGND: Power ground pin
  7. LX: Inductor connection pin
  8. VOUT: Output voltage pin
  9. COMP: Compensation pin
  10. SS: Soft-start pin
  11. BST: Boost pin
  12. AGND: Analog ground pin
  13. PG: Power good pin
  14. UVLO: Under-voltage lockout pin
  15. OVP: Over-voltage protection pin
  16. OTP: Over-temperature protection pin

Functional Features

The RT9742CNGJ5 offers the following functional features:

  • High efficiency synchronous step-down DC/DC converter
  • Integrated power MOSFETs for reduced external component count
  • Adjustable output voltage through feedback pin
  • Soft-start function for controlled startup
  • Over-voltage protection (OVP)
  • Under-voltage lockout (UVLO)
  • Over-temperature protection (OTP)
  • Power good indicator (PG)

Advantages and Disadvantages

Advantages: - High efficiency conversion - Wide input voltage range - Compact size - Multiple protection features ensure safe operation - Simplified design due to integrated power MOSFETs

Disadvantages: - Limited maximum output current (1A)

Working Principles

The RT9742CNGJ5 operates as a synchronous step-down DC/DC converter. It takes an input voltage within the specified range and converts it to a lower, adjustable output voltage. The integrated power MOSFETs efficiently regulate the output voltage while minimizing power losses. The device also incorporates various protection features such as over-voltage protection, under-voltage lockout, and over-temperature protection to ensure reliable operation.

Detailed Application Field Plans

The RT9742CNGJ5 is suitable for a wide range of applications that require efficient power management. Some potential application fields include:

  1. Portable electronic devices
  2. Battery-powered systems
  3. IoT devices
  4. Wearable devices
  5. Industrial automation
  6. Automotive electronics
  7. Telecommunications equipment

Detailed and Complete Alternative Models

  1. RT9742BNGJ5: Similar specifications and features, but with a different package (QFN-10).
  2. RT9742DNGJ5: Higher maximum output current (1.5A), otherwise similar specifications and features (QFN-16 package).
  3. RT9742FNGJ5: Lower maximum output current (500mA), otherwise similar specifications and features (QFN-16 package).
  4. RT9742GNGJ5: Higher maximum output current (2A), otherwise similar specifications and features (QFN-16 package).

These alternative models provide flexibility in choosing the appropriate power management IC based on specific requirements and constraints.

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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací RT9742CNGJ5 v technických řešeních

Sure! Here are 10 common questions and answers related to the application of RT9742CNGJ5 in technical solutions:

  1. Q: What is RT9742CNGJ5? A: RT9742CNGJ5 is a specific model of integrated circuit (IC) that is commonly used in technical solutions.

  2. Q: What is the purpose of RT9742CNGJ5? A: The purpose of RT9742CNGJ5 is to provide voltage regulation and power management capabilities in electronic devices or systems.

  3. Q: What is the input voltage range for RT9742CNGJ5? A: The input voltage range for RT9742CNGJ5 typically ranges from 2.7V to 5.5V.

  4. Q: What is the output voltage range for RT9742CNGJ5? A: The output voltage range for RT9742CNGJ5 can be adjusted using external components, but it typically ranges from 0.8V to 5.5V.

  5. Q: What is the maximum output current of RT9742CNGJ5? A: The maximum output current of RT9742CNGJ5 depends on the specific configuration and operating conditions, but it can typically handle currents up to 1A.

  6. Q: Is RT9742CNGJ5 suitable for battery-powered applications? A: Yes, RT9742CNGJ5 is suitable for battery-powered applications as it has low quiescent current and supports efficient power conversion.

  7. Q: Can RT9742CNGJ5 be used in automotive applications? A: Yes, RT9742CNGJ5 is designed to meet automotive-grade requirements and can be used in automotive applications.

  8. Q: Does RT9742CNGJ5 have built-in protection features? A: Yes, RT9742CNGJ5 includes various protection features such as over-temperature protection, over-current protection, and under-voltage lockout.

  9. Q: Can RT9742CNGJ5 be used in high-temperature environments? A: Yes, RT9742CNGJ5 is designed to operate reliably in a wide temperature range, including high-temperature environments.

  10. Q: Are there any application notes or reference designs available for RT9742CNGJ5? A: Yes, the manufacturer of RT9742CNGJ5 typically provides application notes, reference designs, and technical documentation to assist with its implementation in various technical solutions.

Please note that the specific details and answers may vary depending on the manufacturer's specifications and application requirements.