RM6203 is a cost-effective AC/DC converter with an integrated 700V power transistor, which offers up to 12W continuous output power in the wide voltage range of 85V~265V. It features an optimized current mode control system, which provides excellent transient response and good loop stability. It also has built-in undervoltage lockout, overvoltage protection, and overtemperature protection circuits, ensuring the safe and stable operation of the chip.
The RM6203 is designed for cost‑effective AC/DC converters and integrates a 700 V rated power transistor, allowing operation over a wide input range of 85 V to 265 V. It provides up to 12 W continuous and 18 W peak output power while maintaining low standby loss and high transient response.
The device includes internal protections such as under‑voltage lockout, over‑voltage protection, over‑temperature shutdown, and over‑current limiting. It is supplied in a DIP‑8 package and is suitable for applications like power adapters, DVD players, set‑top boxes, fax machines, printers, and LCD displays. This manual is written in Chinese.
| Power transistor voltage rating | 700 V |
|---|---|
| Input voltage range | 85 V – 265 V |
| Continuous output power | 12 W |
| Peak output power | 18 W |
| Total dissipation power | 1 W |
| Operating temperature range | 0 °C – 75 °C |
| Startup current | 1.6 – 3.2 mA |
| Static current | 55 – 80 µA |
| Undervoltage lockout threshold | 3.8 V |
| Overvoltage protection threshold | 9.5 – 10.5 V |
| Maximum duty cycle | 53 % – 61 % |
| Minimum duty cycle | 3.5 % |
| Current sampling threshold | 0.55 – 0.65 V |
| Current limit | 0.25 – 0.29 A |
The RM6203 operates over a wide input voltage range of 85 V to 265 V.
It includes under‑voltage lockout, over‑voltage protection, over‑temperature protection, and over‑current limiting.
The device can deliver up to 12 W of continuous output power.
The RM6203 is supplied in a DIP‑8 package.