SG3525AP

SG3525AP is an STMicroelectronics SG3525A pulse-width modulator in SO-16 — voltage-mode PWM controller with dual totem-pole outputs (over 200 mA source/sink; ±500 mA absolute maximum), 8 V to 35 V supply, 100 Hz to 400 kHz oscillator range, 0 to 49% maximum duty cycle per output, 5.1 V reference trimmed to ±1%, built-in soft-start, shutdown and undervoltage lockout, 0 to +70 °C, tube packing. The SO-16 package is the selection point: the P suffix is the surface-mount SOIC version — the AN suffix is the DIP-16 through-hole version, so match the package letter to your board. Selection advice: the 49% duty-cycle limit per output suits push-pull and half-bridge topologies; it cannot drive a single-ended boost directly beyond that limit. A sync pin allows multiple units to be slaved to one clock. Evidence: ST SG2525A/SG3525A datasheet and element14 listings confirm voltage-mode PWM, 8-35 V, 400 kHz, SO-16 and tube packing. Match the full SG3525AP code.