Download the SG3845 datasheet PDF.
This datasheet also includes the SG3844 variant, as both parts are published together in a single manufacturer document.
The SG1844/45 family of control ICs provides all the required
Overview
SG1844/SG1845/SG3844/SG3845 Current Mode PWM Controller.
Key Features
to implement off-line Fixed Frequency, Current-mode switching power supplies with a minimum number of external components. Current-mode architecture demonstrates improved line regulation, improved load regulation, pulse-by pulse current limiting and inherent protection of the power supply output switch. The Bandgap reference is trimmed to ±1% over temperature. Oscillator discharge current is trimmed to less than ±10%. The SG1844/45 has under-voltage lockout, current-limiting circuitry and start-.
