BUY UC3844D https://www.utsource.net/itm/p/817101.html
SMPS Controller
UC3844D is a PWM controller IC from Texas Instruments. It is available in a 14 pin SOP package. Description: The UC3844D is a current-mode PWM control integrated circuit for controlling switching power supplies. The UC3844D is excellent for controlling lights, motors, and other power-driven circuits with high frequency. Features: Current Mode Control Voltage Lockout Thermal Shutdown Undervoltage Lockout Protection Precise Pulse-by-Pulse Current Limiting TTL Compatible Inputs High Frequency Range (30 kHz to 500 kHz) Applications: Switched Mode Power Supplies Battery Chargers Power Factor Correction Motor Control Lighting Control (For reference only)