The CRM6112 is a high‑precision, integrated primary‑side feedback LED driver chip with a built‑in 600 V power MOSFET, supporting 85‑264 VAC input and up to…
The CRM6112 is a high‑integration DCM (inductor‑current discontinuous mode) LED driver chip that uses primary‑side feedback to maintain constant current without a secondary feedback circuit. It integrates a 600 V power MOSFET, offers ±3 % current accuracy, and includes multiple protection features such as LED short‑circuit, open‑circuit, over‑temperature, over‑voltage, and UVLO.
The device is supplied in an SOP8 package with a pinout that provides FB, VDD, CS, DRAIN and GND connections. Electrical parameters include an input voltage range of 85‑264 VAC, a typical switching frequency of 40 kHz, a maximum power dissipation of 0.5 W, and an operating temperature range of –40 °C to 85 °C. Detailed PCB layout guidelines are provided to minimize interference and ensure reliable operation. This manual is written in Chinese.
| Input voltage range | 85‑264 VAC |
|---|---|
| Output current accuracy | ±3 % |
| Maximum power dissipation | 0.5 W |
| Operating temperature range | –40 °C to 85 °C |
| Package type | SOP8 |
| Typical switching frequency | 40 kHz |
| VDD over‑voltage protection threshold | 15.75‑17.25 V |
The CRM6112 operates with an input voltage from 85 VAC to 264 VAC.
The typical switching frequency is 40 kHz, with a recommended range of 20 kHz to 75 kHz.