UC3852

The UC1852 provides a large capacity on the control time to adjust the output DC voltage, a cutoff time defined by the boost inductor, zero current detection circuit, and restart the switching cycle switch. Even if both switching frequencies vary instantaneously with load and line voltage, it can be maintained within a reasonable range to minimize noise generation.

characteristic

• Low-cost power factor correction
• The power factor is greater than 0.99
• The number of external parts required
• PWM boost with controlled on-time
• Zero current switch
• Peak current limit
• Minimum and maximum frequency limits
• The start-up current is less than 1mA
• The high-current FET drives the output
• Undervoltage lockout