Description
The UC3872DW from Texas Instruments is a PWM controller IC for power management applications, designed as a primary-side controller for flyback or forward converters. It features an internal start-up circuit, adjustable cycle-by-cycle current limiting, soft-start, under-voltage lockout with hysteresis, and low start-up current of 20uA. Additionally, it offers auto-restart timer, over-temperature protection, and is available in a SOIC-16 package.
This IC is applicable to various power management systems, including switch-mode power supplies, industrial control systems, motor drive circuits, battery chargers, telecommunication power systems, LED lighting, renewable energy, HVAC, automotive power, and UPS systems. With its comprehensive features and compact package, the UC3872DW can be effectively used in a variety of applications to manage power efficiently.
Features
According to the product information, the features of UC3872DW include:
- Primary side controller for flyback or forward converters
- Internal start-up circuit
- Adjustable cycle-by-cycle current limiting
- Internal soft-start
- Under-voltage lockout with hysteresis
- Low start-up current (20uA)
- Auto-restart timer
- Over-temperature protection
These features make the UC3872DW suitable for use in various applications, including switch-mode power supplies, industrial power control systems, and more.
Package
The package type of UC3872DW is SOIC-16-300mil.
Pinout
The UC3872DW has a pin count of 16.
Here's a concise overview of its pin functions:
- Pins 1-4: Input voltage (VCC)
- Pin 5: Enable input
- Pin 6: Soft-start input
- Pin 7: Cycle-by-cycle current limit set
- Pin 8: Under-voltage lockout threshold
- Pin 9: Auto-restart timer input
- Pins 10-11: Feedback voltage (VFB)
- Pin 12: Output (OUT)
- Pins 13-14: Ground (GND)
- Pin 15: Over-temperature protection input
- Pin 16: Not connected
Please note that this is a brief summary, and you should refer to the datasheet for more detailed information.
Manufacturer
The manufacturer of the UC3872DW is Texas Instruments (TI), a leading American technology company that designs, manufactures, and sells semiconductors and other electronic components. TI is a global leader in the development and manufacturing of analog and embedded processing technologies. The company was founded in 1930 and is headquartered in Dallas, Texas.
Applications
The UC3872DW PWM controller IC is suitable for various applications, including:
- Switch-mode power supplies
- Industrial power control systems
- Motor drive circuits
- Battery charger circuits
- Telecommunication power systems
- LED lighting systems
- Renewable energy systems
- HVAC systems
- Automotive power systems
- UPS systems
Equivalent
Based on Texas Instruments' documentation and industry knowledge, some equivalent products to UC3872DW are:
- UC3844
- TL3425
- UC3760
- STP16CHE05 (from STMicroelectronics)
- LM5117 (from Texas Instruments itself)
These PWM controllers share similar functions such as primary side control, adjustable current limiting, and soft-start features. However, please note that pin-to-pin compatibility may vary between devices, and thorough analysis of each device's specification is recommended before replacement or migration.
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Happy with the delivery.2 modules are already working.