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UC3526NG4
Product Overview
Category
The UC3526NG4 belongs to the category of integrated circuits (ICs) and specifically falls under the family of PWM controllers.
Use
This product is commonly used in power supply applications, particularly in switch-mode power supplies (SMPS) and DC-DC converters.
Characteristics
- Package: The UC3526NG4 is typically available in a 16-pin dual in-line package (DIP).
- Essence: It serves as a versatile PWM controller with various features for efficient power supply regulation.
- Packaging/Quantity: The product is usually packaged in reels or tubes, with quantities varying based on manufacturer specifications.
Specifications
The UC3526NG4 features the following specifications: - Input Voltage Range: 8V to 40V - Output Voltage Range: 1.25V to 36V - Operating Temperature Range: -40°C to 85°C - Maximum Duty Cycle: 100% - Oscillator Frequency Range: 100Hz to 500kHz
Detailed Pin Configuration
The pin configuration of the UC3526NG4 is as follows: 1. VREF 2. COMP 3. RT/CT 4. DISCH 5. GROUND 6. OUTPUT 7. VCC 8. SYNC 9. OSC 10. CT 11. RT 12. THRESH 13. RESET 14. ERROR AMP INVERTING INPUT 15. ERROR AMP NON-INVERTING INPUT 16. FEEDBACK
Functional Features
The UC3526NG4 offers the following functional features: - Precision voltage reference - Error amplifier with high gain - Pulse-by-pulse current limiting - Soft start capability - Overvoltage protection - Undervoltage lockout
Advantages and Disadvantages
Advantages
- Wide input voltage range
- High efficiency
- Comprehensive protection features
- Flexible frequency control
Disadvantages
- Limited maximum duty cycle
- External components required for full functionality
Working Principles
The UC3526NG4 operates by comparing the feedback voltage from the power supply output with a precise internal reference. It then adjusts the duty cycle of the PWM signal to regulate the output voltage.
Detailed Application Field Plans
The UC3526NG4 finds extensive application in various power supply systems, including: - Uninterruptible power supplies (UPS) - Battery chargers - LED drivers - Industrial power converters
Detailed and Complete Alternative Models
Some alternative models to the UC3526NG4 include: - UC3525A - SG3526N - TL494CN - LM5036
In conclusion, the UC3526NG4 is a versatile PWM controller with a wide range of applications in power supply systems, offering efficient regulation and comprehensive protection features.
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What is UC3526NG4?
- UC3526NG4 is a pulse width modulation (PWM) controller IC commonly used in power supply and motor control applications.
What are the key features of UC3526NG4?
- The key features of UC3526NG4 include adjustable frequency operation, soft-start capability, current limiting, and over-temperature shutdown.
How is UC3526NG4 typically used in power supply applications?
- In power supply applications, UC3526NG4 is used to regulate the output voltage by controlling the duty cycle of the switching transistors.
Can UC3526NG4 be used for motor control?
- Yes, UC3526NG4 can be used for motor control applications by regulating the speed and direction of DC motors through PWM control.
What is the maximum operating frequency of UC3526NG4?
- The maximum operating frequency of UC3526NG4 is typically around 300 kHz.
How does UC3526NG4 provide over-temperature protection?
- UC3526NG4 provides over-temperature protection by monitoring the junction temperature and shutting down the device if it exceeds a certain threshold.
Is UC3526NG4 suitable for high-power applications?
- Yes, UC3526NG4 is suitable for high-power applications as it can handle relatively high currents and voltages.
What are the typical input and output voltage ranges for UC3526NG4?
- The typical input voltage range for UC3526NG4 is around 8V to 40V, and the output voltage range depends on the specific application and external components used.
Does UC3526NG4 require external components for operation?
- Yes, UC3526NG4 requires external components such as resistors, capacitors, and inductors to form a complete power supply or motor control circuit.
Are there any application notes or reference designs available for UC3526NG4?
- Yes, Texas Instruments provides application notes and reference designs for UC3526NG4 to assist with its implementation in various technical solutions.