Features • Low RDS(on) and FOM • Extremely low switching losses • Excellent stability and uniformity • Fast switching and soft recovery Applications • Consumer electronics power supplies • Motor control • Synchronous rectification • Isolated DC/DC converters

The P61089B series provides a programmable SIDACtor overvoltage protection device for SLIC applications. The single-port negative‑terminal Battrax series offers a programmable device that references a negative‑terminal voltage supply, while an internal diode protects against positive‑terminal surge events. ● Dual‑voltage tracking protector ● Wide negative voltage range: VMGL = −167 VMAX ● Low dynamic switching voltage: VFP and VDGL ● Low gate trigger current: IGT = 5 mA max ● Peak pulse current: IPP = 50 A (10/700 µs) ● High holding current: IH ≥ 150 mA.

On-state RMS current IT(RMS): 2 A; Off-state repetitive peak voltage VDRM/VRRM: 600 V; On-state peak voltage VTM: 1.5 V; Gate trigger current Igt3: 25 mA.

I. Overview The R7731 is a high-performance, low-cost, current-mode PWM controller with low inrush current, featuring burst‑mode operation to support energy‑saving green‑mode operation. It integrates functions such as soft start, undervoltage lockout (UVLO), leading edge blanking (LEB), overtemperature protection (OTP), and internal slope compensation, providing users with an efficient, low‑component‑count, and cost‑effective solution for AC/DC power supply applications. To prevent damage to the external power MOSFET caused by power supply overvoltage, the R7731’s output driver is clamped at 12 V. Additionally, it offers multiple protection features, including overload protection (OLP) and overvoltage protection (OVP), eliminating the need for external protection circuits and ensuring reliable operation. The device is packaged in SOT‑23‑6. II. Application Areas The R7731 is suitable for applications such as ATX standby power supplies, set-top boxes (STBs), DVD and CD(R) players, TV/monitor standby power supplies, PC peripherals, and more. III. Features - Extremely low inrush current (< 30 μA) - 10/14 V UVLO - Soft-start function - Current-mode control - Frequency jittering - Internal leading edge blanking - Built-in slope compensation - Burst‑mode triple PWM for green mode operation - Cycle-by-cycle current limiting - Output open‑circuit protection - Output overvoltage protection - Overtemperature protection - Overload protection - Soft drive reduces EMI - High noise immunity - Optocoupler short‑circuit protection - RoHS compliant and halogen‑free