The TL3842P is a popular integrated circuit (IC) component that functions as a fixed frequency current-mode PWM controller. It is widely used in various applications, including switch-mode power supplies, LED drivers, and battery chargers.
The TL3842P offers several key features that make it suitable for use in these applications. Firstly, it operates at a fixed frequency, which simplifies the design and ensures stability. The fixed frequency can be set using external timing components to achieve the desired switching frequency.
Another important feature is its current-mode control operation. This means that the TL3842P regulates the output current rather than the output voltage, which provides better loop stability and enables excellent transient response. The current-mode control also facilitates easier implementation of overcurrent protection and current limiting.
The TL3842P has a wide input voltage range, typically from 7V to 35V, allowing it to accommodate various input sources. It has a driving capability of up to 100mA, making it capable of handling diverse loads.
To enhance design flexibility, the TL3842P offers an adjustable output voltage. By adding an external resistor divider, the output voltage can be set to the desired level. This flexibility, combined with its high accuracy voltage reference, makes it adaptable to multiple applications.
Moreover, the TL3842P incorporates a soft-start feature to limit inrush current during startup, protecting the circuit components
