This datasheet describes the UTC3845D/E, a bipolar linear integrated circuit for offline or DC-DC fixed-frequency current-mode control schemes.
The UTC3845 is designed to provide necessary functions for offline or DC-to-DC fixed-frequency current-mode control schemes with minimal external components. Key features include low startup current (less than 1mA), automatic feedforward compensation, pulse-by-pulse current limiting, enhanced load response characteristics, and a high-current totem-pole output stage. This manual is written in Chinese.
| Startup Current | < 1mA |
|---|---|
| Operating Frequency | 500kHz |
| Supply Voltage (Low Impedance Source) | 30 V |
| Output Current | ±1 A |
| Oscillator Initial Accuracy | 49 to 55 kHz |
The maximum supply voltage (low impedance source) is 30 V.
The device supports operation up to 500kHz.