The TS19820 is a single-stage active power factor (PF) corrected switch-mode power supply IC supporting high PF over a wide AC input voltage range.  Output current modulation dimming is controlled from a dedicated pin capable of either PWM or linear analog signal input. The TS19820 achieves high accuracy line- and load-regulation in discontinuous conduction mode (DCM) architecture. Output switching regulation is controlled with pulse frequency modulation (PFM) which is particularly suited for high conversion efficiency and high PF even at low output power levels. The TS19820 also features a 3.3V LDO output for MCU applications. Integrated protection features such as an external switching MOSFET gate drive voltage clamp, VCC over-voltage protection, and system output open/short circuit protection increase system reliability.