SP2637AF is a high p₹←erfomance offline PSR power switc≈↕h for low power AC/DC ch§δ←€arger and adapter applications. I✘α©♣t operates in primary-side sensin™±λg and regulation.Thus, opto-coupler☆φ and TL431 are not require↕λ ★d. In CC control, the ou‌₩₩tput current and powerπ±'• setting can be adjust•↔•​ed extemally by the sense resistor¶≥' Rcs at CS PIN. In CV control,multi-mo✔™∏φde operations are utilized to achieve ÷♣¥₽high performance and high eff∏‌iciency. In addition, good load rφ↕α£egulation is achieved by the bui≠γ¶lt-in cable drop compe♣ ©nsation. SP2637AF operates ←≠in PFM in CC mode, and it oper≥♦ates in PWM+PFM in CV mode with frequ← εency reduction at light/m≈∏♣>edium load. The chip consumes veryΩ£ low operation current. It achi ↓eves less than 75mW standby power toπ$≤β meet all global energy e¥∑fficiency regulations.₩$Ωσ SP2637AF offers comprehe₽✘ >nsive protection coverage with auα☆≥to-recovery feature including Cycleε<‌-by-Cycle current limitin↕‌"g, VDD over voltage pr≠≤otection (OVP),FB over v♠≠•oltage protection,load short cir≠<®cuit protection, VDD under voltage l€±π<ockout (UVLO), OTP etc. ∏ ≈SP2637AF is offered in SOP8 pa≥π≠ckages.