Specifications
| Attribute | Value |
| Package | Tube |
| ProductStatus | Active |
| 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 | Through Hole |
| Package/Case | 16-DIP (0.300, 7.62mm) |
Overview
Description
The SG3525AN is a pulse width modulation (PWM) controller integrated circuit, commonly used in power electronics for controlling the output of switch-mode power supplies and other related devices. It is designed to regulate voltage and current in various applications, such as DC-DC converters and inverters. Key features of the SG3525AN include an on-chip oscillator, error amplifier, and dual-output for push-pull configurations, making it versatile for different power control needs.
The IC operates over a wide input voltage range and provides precise control over output frequency and duty cycle, enhancing the efficiency and stability of power systems. It has built-in protections, such as overcurrent protection, and can be synchronized with external systems. The SG3525AN is known for its reliability and ease of implementation, often chosen for its ability to handle high-power loads with minimal external components. Its compact DIP or surface-mount packaging allows for versatile integration in various electronic designs.
The IC operates over a wide input voltage range and provides precise control over output frequency and duty cycle, enhancing the efficiency and stability of power systems. It has built-in protections, such as overcurrent protection, and can be synchronized with external systems. The SG3525AN is known for its reliability and ease of implementation, often chosen for its ability to handle high-power loads with minimal external components. Its compact DIP or surface-mount packaging allows for versatile integration in various electronic designs.
Equivalent
The SG3525AN is a pulse width modulation (PWM) controller. Equivalent products to the SG3525AN include:
1. TL494: A widely used PWM controller with similar functionalities.
2. KA3525A: A direct equivalent, offering similar specifications.
3. UC3525A: Another close equivalent with comparable features.
4. NCP3525A: Offers similar performance and functions.
5. LM3525: Another alternative with similar operational characteristics.
These equivalents can be used in power supply and DC-DC converter applications similar to the SG3525AN.
1. TL494: A widely used PWM controller with similar functionalities.
2. KA3525A: A direct equivalent, offering similar specifications.
3. UC3525A: Another close equivalent with comparable features.
4. NCP3525A: Offers similar performance and functions.
5. LM3525: Another alternative with similar operational characteristics.
These equivalents can be used in power supply and DC-DC converter applications similar to the SG3525AN.
Features
The SG3525AN is a pulse width modulation (PWM) controller IC commonly used in power supply and motor control applications. Key features include:
1. PWM Control: It provides precise pulse width modulation control for efficient power management.
2. Voltage Reference: It includes a built-in voltage reference for stable operation.
3. Oscillator: The IC has an on-chip oscillator with frequency stability, adjustable via external resistors and capacitors.
4. Error Amplifier: It contains an error amplifier for voltage regulation and feedback control.
5. Soft-Start Capability: The IC supports soft-start to gradually increase output voltage, reducing startup stress.
6. Shutdown Feature: It includes a shutdown option for energy-saving and protective measures.
7. Current Limiting: The device offers current limiting to prevent overload conditions.
8. Output Drive: It can drive MOSFETs and bipolar transistors, enhancing flexibility in various applications.
These features make the SG3525AN suitable for switch-mode power supplies, DC-DC converters, and other applications requiring reliable PWM control.
1. PWM Control: It provides precise pulse width modulation control for efficient power management.
2. Voltage Reference: It includes a built-in voltage reference for stable operation.
3. Oscillator: The IC has an on-chip oscillator with frequency stability, adjustable via external resistors and capacitors.
4. Error Amplifier: It contains an error amplifier for voltage regulation and feedback control.
5. Soft-Start Capability: The IC supports soft-start to gradually increase output voltage, reducing startup stress.
6. Shutdown Feature: It includes a shutdown option for energy-saving and protective measures.
7. Current Limiting: The device offers current limiting to prevent overload conditions.
8. Output Drive: It can drive MOSFETs and bipolar transistors, enhancing flexibility in various applications.
These features make the SG3525AN suitable for switch-mode power supplies, DC-DC converters, and other applications requiring reliable PWM control.
Pinout
The SG3525AN is a pulse width modulation (PWM) controller integrated circuit used for switching power supplies and other power control applications. It typically comes in a 16-pin dual in-line package (DIP). Here is a brief overview of its pin functions:
1. Pin 1 (INV): Inverting input to the error amplifier.
2. Pin 2 (NI): Non-inverting input to the error amplifier.
3. Pin 3 (OSC OUT): Oscillator output.
4. Pin 4 (RT): Timing resistor for setting oscillator frequency.
5. Pin 5 (CT): Timing capacitor for setting oscillator frequency.
6. Pin 6 (DEAD TIME CTL): Adjusts dead time between outputs.
7. Pin 7 (SYNC): Synchronization input.
8. Pin 8 (GND): Ground.
9. Pin 9 (C OUT A): Output A for driving external transistors.
10. Pin 10 (C OUT B): Output B for driving external transistors.
11. Pin 11 (VCC): Supply voltage.
12. Pin 12 (VC): Control voltage.
13. Pin 13 (E/A OUT): Error amplifier output.
14. Pin 14 (SOFT START): Soft-start control.
15. Pin 15 (COMP): Compensation pin for stability.
16. Pin 16 (REF OUT): Reference voltage output.
This IC is widely used for its flexibility and the ability to adjust frequency, duty cycle, and dead-time, making it suitable for various power management tasks.
1. Pin 1 (INV): Inverting input to the error amplifier.
2. Pin 2 (NI): Non-inverting input to the error amplifier.
3. Pin 3 (OSC OUT): Oscillator output.
4. Pin 4 (RT): Timing resistor for setting oscillator frequency.
5. Pin 5 (CT): Timing capacitor for setting oscillator frequency.
6. Pin 6 (DEAD TIME CTL): Adjusts dead time between outputs.
7. Pin 7 (SYNC): Synchronization input.
8. Pin 8 (GND): Ground.
9. Pin 9 (C OUT A): Output A for driving external transistors.
10. Pin 10 (C OUT B): Output B for driving external transistors.
11. Pin 11 (VCC): Supply voltage.
12. Pin 12 (VC): Control voltage.
13. Pin 13 (E/A OUT): Error amplifier output.
14. Pin 14 (SOFT START): Soft-start control.
15. Pin 15 (COMP): Compensation pin for stability.
16. Pin 16 (REF OUT): Reference voltage output.
This IC is widely used for its flexibility and the ability to adjust frequency, duty cycle, and dead-time, making it suitable for various power management tasks.
Manufacturer
The SG3525AN is manufactured by STMicroelectronics. STMicroelectronics is a global semiconductor company that designs, develops, manufactures, and markets a wide range of semiconductor products used in microelectronics applications. It is one of the largest semiconductor companies in the world, known for providing solutions across various sectors including automotive, industrial, personal electronics, communications equipment, and IoT applications.
Application
The SG3525AN is a versatile PWM controller IC commonly used in various power electronics applications. It is widely used in switch-mode power supplies (SMPS), DC-DC converters, and inverters. The IC is suitable for both voltage and current mode control in power systems. It is also employed in battery chargers, motor speed controllers, and uninterruptible power supplies (UPS) due to its efficient regulation and control capabilities. Its features, such as adjustable dead time control, soft-start, and built-in protection mechanisms, make it ideal for these applications, ensuring reliability and stability in power management systems.
Package
The SG3525AN is typically available in a Dual In-line Package (DIP) with 16 pins. This package type is suitable for through-hole mounting on printed circuit boards (PCBs).
