Richtek USA Inc.
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RT9166-12GVL
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RT9166-12GVL

Product Overview

Category: Voltage Regulator
Use: Regulating voltage in electronic circuits
Characteristics: Low dropout, low noise, high accuracy
Package: SOT-23-3
Essence: Integrated circuit for voltage regulation
Packaging/Quantity: Tape & Reel, 3000 units per reel

Specifications

  • Input Voltage Range: 2.5V to 12V
  • Output Voltage: 1.2V
  • Output Current: 400mA
  • Dropout Voltage: 300mV at 100mA
  • Quiescent Current: 75µA
  • Operating Temperature Range: -40°C to 85°C

Detailed Pin Configuration

  1. VIN: Input Voltage
  2. GND: Ground
  3. VOUT: Output Voltage

Functional Features

  • Low dropout voltage
  • Low output noise
  • High accuracy over line and load variations
  • Thermal shutdown and current limit protection

Advantages and Disadvantages

Advantages: - Wide input voltage range - Low dropout voltage - Low quiescent current

Disadvantages: - Limited output current compared to some alternatives - SOT-23-3 package may be challenging for hand soldering

Working Principles

The RT9166-12GVL is a linear voltage regulator that uses a PNP pass transistor to regulate the output voltage. It compares the reference voltage with the divided output voltage to adjust the pass transistor's conduction, maintaining a stable output voltage.

Detailed Application Field Plans

The RT9166-12GVL is suitable for various battery-powered applications, such as portable equipment, consumer electronics, and industrial instruments. Its low dropout voltage and low quiescent current make it ideal for powering sensitive components in these devices.

Detailed and Complete Alternative Models

  1. LM2937-3.3: Similar dropout voltage and output current, different package
  2. MIC5205-3.3: Higher output current, similar package, slightly higher dropout voltage

This completes the entry for RT9166-12GVL, providing comprehensive information about its category, specifications, features, and application.

Énumérez 10 questions et réponses courantes liées à l'application de RT9166-12GVL dans les solutions techniques

  1. What is the RT9166-12GVL?

    • The RT9166-12GVL is a low dropout (LDO) voltage regulator designed to provide a stable 1.2V output voltage with a maximum input voltage of 5.5V.

  2. What are the typical applications of the RT9166-12GVL?

    • The RT9166-12GVL is commonly used in battery-powered devices, portable equipment, and other applications where a stable low voltage supply is required.

  3. What is the maximum input voltage for the RT9166-12GVL?

    • The RT9166-12GVL can handle a maximum input voltage of 5.5V, making it suitable for use with various power sources.

  4. What is the dropout voltage of the RT9166-12GVL?

    • The dropout voltage of the RT9166-12GVL is typically around 300mV at full load, ensuring efficient regulation even when the input voltage is close to the output voltage.

  5. What is the output current capability of the RT9166-12GVL?

    • The RT9166-12GVL can deliver up to 150mA of output current, making it suitable for powering a wide range of low-power devices and components.

  6. Does the RT9166-12GVL require any external components for operation?

    • The RT9166-12GVL requires only a small ceramic capacitor for stability, simplifying its application and reducing the overall component count in the circuit.

  7. Is the RT9166-12GVL suitable for low-power or energy-efficient designs?

    • Yes, the RT9166-12GVL's low quiescent current and low dropout voltage make it well-suited for low-power and energy-efficient designs.

  8. What are the key features of the RT9166-12GVL?

    • The key features of the RT9166-12GVL include low dropout voltage, low quiescent current, thermal shutdown protection, and short-circuit current limiting.

  9. Can the RT9166-12GVL be used in automotive applications?

    • Yes, the RT9166-12GVL is suitable for automotive applications, provided that it meets the specific requirements and standards for automotive electronics.

  10. Are there any recommended layout considerations for using the RT9166-12GVL?

    • It is recommended to place the input and output capacitors as close to the device as possible to minimize parasitic effects and ensure stable operation. Additionally, proper grounding and thermal management should be considered for optimal performance.