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SG1845Y-883B

SG1845Y-883B

Product Overview

Category

SG1845Y-883B belongs to the category of integrated circuits (ICs).

Use

This IC is commonly used in power supply applications.

Characteristics

  • High efficiency
  • Low power consumption
  • Wide input voltage range
  • Stable output voltage
  • Overload and short-circuit protection

Package

SG1845Y-883B is available in a compact 8-pin DIP (Dual Inline Package) format.

Essence

The essence of SG1845Y-883B lies in its ability to regulate and control the output voltage of a power supply circuit.

Packaging/Quantity

SG1845Y-883B is typically packaged in reels or tubes, with a quantity of 1000 units per package.

Specifications

  • Input Voltage Range: 7V to 40V
  • Output Voltage Range: 1.25V to 37V
  • Output Current: Up to 500mA
  • Operating Temperature Range: -40°C to +85°C
  • Frequency Range: 50kHz to 500kHz

Detailed Pin Configuration

  1. COMP: Compensation pin for regulating the output voltage.
  2. FB: Feedback pin for sensing the output voltage.
  3. RT/CT: Timing components connection pins for setting the oscillator frequency.
  4. GND: Ground reference pin.
  5. VREF: Reference voltage output pin.
  6. CT: Timing capacitor connection pin.
  7. OSC: Oscillator timing resistor connection pin.
  8. VCC: Power supply input pin.

Functional Features

  • Voltage regulation: SG1845Y-883B provides precise voltage regulation, ensuring a stable output voltage even under varying load conditions.
  • Overload and short-circuit protection: The IC incorporates built-in protection mechanisms to safeguard against overloading and short-circuits, preventing damage to the power supply circuit.
  • Wide input voltage range: SG1845Y-883B can operate within a wide range of input voltages, making it suitable for various applications.
  • High efficiency: The IC exhibits high efficiency, minimizing power losses and maximizing energy conversion.

Advantages and Disadvantages

Advantages

  • Precise voltage regulation
  • Overload and short-circuit protection
  • Wide input voltage range
  • High efficiency

Disadvantages

  • Limited output current capacity (up to 500mA)
  • Requires external timing components for frequency adjustment

Working Principles

SG1845Y-883B operates based on the principle of pulse width modulation (PWM). It compares the feedback voltage with a reference voltage and adjusts the duty cycle of the output waveform accordingly. By controlling the duty cycle, the IC regulates the output voltage to maintain a constant value.

Detailed Application Field Plans

SG1845Y-883B finds extensive use in various power supply applications, including: 1. Switching power supplies 2. Battery chargers 3. LED drivers 4. Industrial control systems 5. Automotive electronics

Detailed and Complete Alternative Models

  1. LM2576-ADJ: Adjustable voltage regulator IC with similar specifications and features.
  2. MC34063A: Step-up, step-down, and inverting switching regulator IC suitable for various applications.
  3. LT1073: Micropower DC-DC converter IC with adjustable output voltage.

These alternative models offer comparable functionality and can be used as substitutes for SG1845Y-883B in different applications.

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تکنیکی حل میں SG1845Y-883B کے اطلاق سے متعلق 10 عام سوالات اور جوابات کی فہرست بنائیں

Sure! Here are 10 common questions and answers related to the application of SG1845Y-883B in technical solutions:

  1. Q: What is SG1845Y-883B? A: SG1845Y-883B is a voltage mode PWM controller IC used in power supply applications.

  2. Q: What is the operating voltage range of SG1845Y-883B? A: The operating voltage range of SG1845Y-883B is typically between 8V and 35V.

  3. Q: What is the maximum output current that SG1845Y-883B can handle? A: SG1845Y-883B can handle a maximum output current of around 500mA.

  4. Q: Can SG1845Y-883B be used in both buck and boost converter topologies? A: Yes, SG1845Y-883B can be used in both buck and boost converter topologies.

  5. Q: Does SG1845Y-883B have built-in protection features? A: Yes, SG1845Y-883B has built-in protection features such as overcurrent protection and thermal shutdown.

  6. Q: What is the frequency range of the PWM signal generated by SG1845Y-883B? A: The frequency range of the PWM signal generated by SG1845Y-883B is typically between 50kHz and 500kHz.

  7. Q: Can SG1845Y-883B operate in a wide temperature range? A: Yes, SG1845Y-883B is designed to operate in a wide temperature range, typically from -55°C to 125°C.

  8. Q: Is SG1845Y-883B suitable for high-reliability applications? A: Yes, SG1845Y-883B is a high-reliability IC that meets military-grade specifications.

  9. Q: Can SG1845Y-883B be used in battery charging applications? A: Yes, SG1845Y-883B can be used in battery charging applications by controlling the charging voltage and current.

  10. Q: Are there any application notes or reference designs available for SG1845Y-883B? A: Yes, the manufacturer of SG1845Y-883B provides application notes and reference designs to help users implement the IC effectively in their technical solutions.

Please note that the answers provided here are general and may vary depending on specific datasheet information and application requirements.