QW2889F Xinquanwei emergency light professional detection chip

QW2889F is a special chip for emergency detection and control. The chip adopts patented high-voltage isolation and detection technology, directly monitors the status of AC input signals without any peripheral components, and directly or indirectly drives LED light strings. It also supports full voltage 85-265Vac input.

QW2889F integrates high-precision single-cell lithium battery management and 0V battery charging functions, and has overcharge protection and over-discharge protection functions. The EN terminal of QW2889F supports series current limiting resistors to directly drive a single string of LEDs, and also supports external boost circuits to drive multiple strings of LEDs.

QW2889F adopts patented technology. When multiple lamps are connected in parallel, LED lamps do not need to distinguish between neutral and live wires. The chip also has a dimming function in emergency mode.

The QW2889F is packaged in a ROHS compliant SP-8 package and has an operating temperature range of 40°C to 105°C.

• Extremely simple application circuit

• Accurate AC input impedance detection

• 85-265Vac full voltage input

• EN directly drives LED load

• Complete battery protection and management

• No need to distinguish between neutral and live wires

• Emergency dimming

• Full-parallel full-bright LED emergency light • Full-string half-bright LED emergency light

• LED emergency light with boost circuit • Fire emergency light