Texas Instruments UC3845ADTRG4 current-mode PWM controller, 7.6 V to 30 V supply, 48% max duty cycle, switching frequency up to 500 kHz, single transistor driver output, 14-SOIC package, Tape & Reel.
| Parameter | Value |
|---|---|
| Output type | Transistor Driver |
| Mounting | Surface Mount |
| Voltage - supply (Vcc (Vdd)) | 7.6V ~ 30V |
| Frequency - switching | Up to 500kHz |
| I/O channels | 1 |
| Output phases | 1 |
| Duty cycle | 48% |
| Operating temperature | 0°C~70°C(TA) |
| Package | Tape & Reel (TR) |
| Function | Step-Up, Step-Down, Step-Up/Step-Down |
| Topology | Boost, Buck, Flyback, Forward |
| Clock sync | No |
| Case | 14-SOIC (0.154\", 3.90mm Width) |
| Control features | Frequency Control |
| Output configuration | Positive, Isolation Capable |
| Synchronous rectifier | No |
The UC3845ADTRG4 is a current-mode PWM controller supporting boost, buck, flyback, and forward topologies. Its maximum duty cycle is 48%.
The oscillator runs up to 500 kHz. The 14-SOIC package has a 3.90 mm width.
Vcc spans 7.6 V to 30 V. The 7.6 V undervoltage lockout rising threshold ensures stable startup.
The product status is Active.
Yes, flyback is among the listed topologies alongside boost, buck, and forward. The 48% duty cycle cap and current-mode architecture are well suited to flyback converters operating in continuous or discontinuous conduction mode.