Thông số kỹ thuật
| thuộc tính | Giá trị |
| Package | Tube,Tube |
| ProductStatus | Obsolete |
| OutputType | Transistor Driver |
| Function | Step-Up/Step-Down |
| OutputConfiguration | Positive |
| Topology | Push-Pull |
| NumberofOutputs | 2 |
| OutputPhases | 1 |
| Voltage-Supply(Vcc/Vdd) | 8V ~ 35V |
| Frequency-Switching | 100Hz ~ 400kHz |
| DutyCycle(Max) | 49% |
| SynchronousRectifier | Yes |
| ClockSync | Yes |
| ControlFeatures | Enable, Frequency Control, Soft Start |
| OperatingTemperature | 0°C ~ 70°C (TA) |
| MountingType | Surface Mount |
| Package/Case | 16-SOIC (0.295, 7.50mm Width) |
Tổng quan
Description
The SG3525ADW is a pulse width modulation (PWM) controller used in power electronics for efficient power conversion. It is commonly employed in applications such as switch-mode power supplies, DC-DC converters, and inverters. The device integrates a voltage reference, error amplifier, oscillator, pulse-width modulator, and output drive circuitry.
Key features of the SG3525ADW include a wide supply voltage range, typically from 8V to 35V, which provides flexibility in various applications. It has an on-chip oscillator with an adjustable frequency, which determines how often the output switches, and also includes a soft-start function to limit inrush current.
The SG3525ADW can directly drive power MOSFETs and bipolar transistors, offering high output current capability. It supports push-pull or single-ended configurations, enhancing its versatility. The device also includes protection features like undervoltage lockout to prevent operation under insufficient power conditions.
Overall, the SG3525ADW is appreciated for its reliability, ease of use, and cost-effectiveness in designing efficient power management systems.
Key features of the SG3525ADW include a wide supply voltage range, typically from 8V to 35V, which provides flexibility in various applications. It has an on-chip oscillator with an adjustable frequency, which determines how often the output switches, and also includes a soft-start function to limit inrush current.
The SG3525ADW can directly drive power MOSFETs and bipolar transistors, offering high output current capability. It supports push-pull or single-ended configurations, enhancing its versatility. The device also includes protection features like undervoltage lockout to prevent operation under insufficient power conditions.
Overall, the SG3525ADW is appreciated for its reliability, ease of use, and cost-effectiveness in designing efficient power management systems.
Equivalent
Equivalent products to the SG3525ADW chip, which is a PWM controller, include:
1. TL494
2. UC3525
3. KA3525
4. LM3525
5. NCP1252
These alternatives offer similar functionality for power supply and inverter circuit designs. Always check the specific datasheets for compatible electrical characteristics and pin configurations to ensure they meet your application's requirements.
1. TL494
2. UC3525
3. KA3525
4. LM3525
5. NCP1252
These alternatives offer similar functionality for power supply and inverter circuit designs. Always check the specific datasheets for compatible electrical characteristics and pin configurations to ensure they meet your application's requirements.
Features
The SG3525ADW is a versatile PWM controller IC used for power conversion applications. Key features include:
1. PWM Control: It provides pulse width modulation control, which is essential for efficient power management in switching power supplies.
2. Frequency Range: Capable of operating with a wide frequency range, it allows for flexibility in design and application.
3. Output Configuration: The IC has dual output with push-pull drive capability, suitable for driving power transistors in various configurations.
4. Oscillator Stability: Incorporates a built-in oscillator with precise frequency stability, ensuring consistent and reliable performance.
5. Soft Start Capability: Features soft start functionality to prevent high inrush currents during startup, enhancing system reliability.
6. Shutdown Pin: Includes a shutdown pin for easy power-down control, useful in safety and power management scenarios.
7. Undervoltage Lockout: Equipped with undervoltage lockout to protect the system from low voltage conditions.
8. Error Amplifier: Contains an onboard error amplifier for feedback control, improving regulation accuracy.
These features make the SG3525ADW suitable for a broad range of applications, including DC-DC converters and inverters.
1. PWM Control: It provides pulse width modulation control, which is essential for efficient power management in switching power supplies.
2. Frequency Range: Capable of operating with a wide frequency range, it allows for flexibility in design and application.
3. Output Configuration: The IC has dual output with push-pull drive capability, suitable for driving power transistors in various configurations.
4. Oscillator Stability: Incorporates a built-in oscillator with precise frequency stability, ensuring consistent and reliable performance.
5. Soft Start Capability: Features soft start functionality to prevent high inrush currents during startup, enhancing system reliability.
6. Shutdown Pin: Includes a shutdown pin for easy power-down control, useful in safety and power management scenarios.
7. Undervoltage Lockout: Equipped with undervoltage lockout to protect the system from low voltage conditions.
8. Error Amplifier: Contains an onboard error amplifier for feedback control, improving regulation accuracy.
These features make the SG3525ADW suitable for a broad range of applications, including DC-DC converters and inverters.
Pinout
The SG3525ADW is a pulse-width modulation (PWM) controller, commonly used in power electronics for controlling the output voltage and current of power supplies and converters. It typically comes in a 16-pin surface-mount package. Here’s a brief overview of its pin functions:
1. Comp (1): Compensation pin for the error amplifier.
2. Vref (2): Provides a 5.1V reference voltage.
3. Osc Out (3): Output of the oscillator, used for timing.
4. CT (4): Timing capacitor connection for setting the oscillator frequency.
5. RT (5): Timing resistor connection for setting the oscillator frequency.
6. Sync (6): Synchronization pin for connecting external clock signals.
7. Discharge (7): Controls the discharge time of the oscillator.
8. Soft Start (8): Used for soft-start operations to limit inrush current.
9. Shutdown (9): Disables output when activated.
10. Ground (10): Ground reference.
11. Output A (11): PWM output A.
12. Vcc (12): Supply voltage.
13. Output B (13): PWM output B.
14. Vc (14): Supply for the output stages.
15. E/S (15): Used for external synchronization and frequency control.
16. Non-inv Input (16): Non-inverting input to the error amplifier.
1. Comp (1): Compensation pin for the error amplifier.
2. Vref (2): Provides a 5.1V reference voltage.
3. Osc Out (3): Output of the oscillator, used for timing.
4. CT (4): Timing capacitor connection for setting the oscillator frequency.
5. RT (5): Timing resistor connection for setting the oscillator frequency.
6. Sync (6): Synchronization pin for connecting external clock signals.
7. Discharge (7): Controls the discharge time of the oscillator.
8. Soft Start (8): Used for soft-start operations to limit inrush current.
9. Shutdown (9): Disables output when activated.
10. Ground (10): Ground reference.
11. Output A (11): PWM output A.
12. Vcc (12): Supply voltage.
13. Output B (13): PWM output B.
14. Vc (14): Supply for the output stages.
15. E/S (15): Used for external synchronization and frequency control.
16. Non-inv Input (16): Non-inverting input to the error amplifier.
Manufacturer
The SG3525ADW is manufactured by STMicroelectronics. STMicroelectronics is a leading global semiconductor company that designs, develops, manufactures, and markets a wide range of semiconductor products. The company operates in diverse markets, including automotive, industrial, personal electronics, communications equipment, and others. STMicroelectronics is known for its innovation in semiconductor solutions, providing products that help companies bring electronics to life and drive advancements in technology. It is headquartered in Geneva, Switzerland, and has a strong global presence with offices, manufacturing sites, and research and development facilities around the world.
Application
The SG3525ADW is a versatile PWM (Pulse Width Modulation) controller used primarily in power electronics applications. Key areas of application include:
1. Switched-Mode Power Supplies (SMPS): It is used to design efficient power supply units for various electronic devices.
2. DC-DC Converters: Utilized in converting DC power from one voltage level to another.
3. Inverters: Essential in converting DC to AC power, often used in solar power systems and uninterruptible power supplies (UPS).
4. Motor Control: Provides efficient control in both AC and DC motor applications.
5. Battery Chargers: Used in managing charging cycles for various battery types.
Its features like adjustable duty cycle, built-in soft-start, and high output current capability make it suitable for these applications.
1. Switched-Mode Power Supplies (SMPS): It is used to design efficient power supply units for various electronic devices.
2. DC-DC Converters: Utilized in converting DC power from one voltage level to another.
3. Inverters: Essential in converting DC to AC power, often used in solar power systems and uninterruptible power supplies (UPS).
4. Motor Control: Provides efficient control in both AC and DC motor applications.
5. Battery Chargers: Used in managing charging cycles for various battery types.
Its features like adjustable duty cycle, built-in soft-start, and high output current capability make it suitable for these applications.
Package
The SG3525ADW is typically available in a surface-mount package type called SOIC-16 (Small Outline Integrated Circuit with 16 pins). This package is designed for ease of mounting on printed circuit boards and is commonly used in power supply and PWM controller applications.