ON Semiconductor UC2842AD1013TR Product Overview

The UC2842AD1013TR from ON Semiconductor is a high-performance current mode pulse width modulator (PWM) controller that is widely used in switch mode power supplies and DC-DC converters. This integrated circuit is designed for off-line and DC-to-DC converter applications offering the designer a cost-effective solution with minimal external components.

This device features an automatic feed-forward compensation and a robust PWM latch for enhanced protection. With a trimmed oscillator for precise frequency control and a temperature compensated reference, the UC2842AD1013TR ensures consistent and reliable operation. The oscillator frequency is guaranteed to be within a ±5% tolerance under specified input voltage and temperature conditions.

The UC2842AD1013TR operates at a fixed frequency, which is set by an external resistor and capacitor, and provides a range of user-programmable frequencies. The device can be programmed to operate at 100% duty cycle, making it suitable for battery-operated applications requiring maximum power transfer over a wide range of input voltages.

It also includes under-voltage lockout with hysteresis, making it stable during power-up and power-down sequences. The device is equipped with a high current totem pole output that is capable of sourcing or sinking 1A, which is ideal for driving a power MOSFET or IGBT directly. The UC2842AD1013TR also features current sensing comparator that allows for over-current protection by using an external resistor and capacitor.

With a wide operating range of -40°C to +85°C, the UC2842AD1013TR is suitable for a variety of harsh environments. Its low start-up and operating current contribute to a low power consumption, making it an energy-efficient choice for many applications. The device is available in a compact 8-pin SOIC package, which is convenient for space-constrained applications.

Overall, the UC2842AD1013TR PWM controller from ON Semiconductor is a versatile and reliable component for designing efficient power management systems, and its high level of integration helps to reduce design complexity and time to market.