SP2637AF is a high perfomance offli€©ne PSR power switch fo δα®r low power AC/DC chargeσ§←r and adapter applications∏δ. It operates in primary-side sensing∞ γ and regulation.Thus, opto-coupler φ≤§ and TL431 are not requi≥♦↑red. In CC control, the output curreπ£☆nt and power setting can be ad¶®σ justed extemally by the sense resiσ¶stor Rcs at CS PIN. In ≈®CV control,multi-mode o☆∏perations are utilized to a↑£chieve high performance ✔↕πand high efficiency. In addition, goεπ×od load regulation is ac¥↔₹®hieved by the built-in cable drop comp​®&ensation. SP2637AF operates®"₽σ in PFM in CC mode, and it o♣± ‍perates in PWM+PFM in C→ §V mode with frequency reduct↑>¥αion at light/medium load. The chip conε≈σsumes very low operation current. ItΩ✔≤£ achieves less than 75mW standby poweδ↑₹r to meet all global✔Ω energy efficiency r∞¶•δegulations. SP2637AF offers comprehen®₹÷♣sive protection cove ₩rage with auto-recovery feature ←©including Cycle-by-Cycle £εσcurrent limiting, VDD over volta≠≤ge protection (OVP),∑•≠↕FB over voltage protection,load short ←€circuit protection, V✘δ≈"DD under voltage lockout (U​∑ γVLO), OTP etc. SP2637AF is offereλ∏÷d in SOP8 packages.