Texas Instruments UC1854B Enhanced High Power Factor Preregulator 5962-9326102MEA

The UC1854B Enhanced High Power Factor Preregulator is designed for applications requiring active power factor correction. It achieves near-unity power factor through average current mode control, which maintains a stable, low distortion sinusoidal line current. The device limits line current distortion to less than 3% and operates worldwide without the need for switches. Key features include a fixed-frequency oscillator, a 1% accurate 7.5 V reference, and integrated current and voltage amplifiers. The product also offers improved amplifier performance with high bandwidth and low offset current, as well as enhanced accuracy in the enable comparator. It supports various undervoltage lockout (UVLO) options and has a maximum supply voltage of 20 V, with an operating temperature range from -55¬8C to 125¬8C. The UC1854B is available in a 16-pin CDIP package and is suitable for applications that require robust power management and efficiency.