Texas Instruments Surface Mount 8-Pin SOIC Current Mode PWM Controller, 500 kHz Switching Frequency, 125V Maximum UC2845AD8

Texas Instruments UC2845AD8 is a surface-mounted PWM controller in an 8-pin SOIC package, designed for power management applications in industrial, electronic, and construction equipment. This device utilizes current mode pulse width modulation control with a high switching frequency of up to 500 kHz, enabling efficient and compact power supply designs.

The controller features a maximum supply voltage rating of 125V and operates with a low supply current of 4mA, contributing to low power consumption. Its standard output voltage of 5.2V and output current capability of 1A allow it to drive power stages effectively. The PWM controller supports a maximum 50% duty cycle which ensures stable operation in flyback power supply configurations.

The device is housed in a compact SOIC package with dimensions 4.9 mm (length) by 3.91 mm (width) and 1.58 mm (height), suitable for space-saving PCB layouts. It operates reliably within a temperature range of -40°C to 85°C, making it robust for use in harsh industrial environments.

The UC2845AD8 is noted for its incorporation of primary-side regulation (PSR), which improves transient response to load changes and eliminates the need for optocouplers in isolated flyback designs. This contributes to simplified circuit design and enhanced reliability. The device is part of Texas Instruments' UC series of PWM controllers, trusted for energy-efficient and reliable power management solutions.

Operates at a maximum frequency of 500kHz allowing for compact and efficient power supplies. Low supply current of 4mA minimizes power wastage during operation. Output voltage of 5.2V and 1A output current suitable for various power stages.

Compact SOIC 8-pin surface mount package size facilitates high-density PCB design. Wide operating temperature range from -40°C to 85°C ensures durability across environments.

This PWM controller is widely used in industrial electronics, power converters, HVAC systems, manufacturing equipment, and other applications requiring reliable pulse width modulation with compact form factors. It enables efficient power conversion with enhanced transient response, making it ideal for flyback power supply implementations.

Explore more Texas Instruments PWM Controllers and power management ICs in EnvMart’s Electronics & Electricals category to find components tailored to your industrial and electronic design needs.