TOP266VG Integrated Off-Line Switcher IC eDIP-12B

Description

TOP266VG Integrated Off-Line Switcher IC eDIP-12B The TOP266VG is a TOPSwitch-JX family integrated off-line switcher designed for efficient AC-DC power conversion in compact power supplies. It combines a high-voltage power MOSFET, control circuitry, oscillator, thermal shutdown, and protection functions into a single monolithic device, which helps reduce external parts count and overall system complexity. It is built for applications that need good efficiency, low standby power, and stable operation across a wide load range. The device supports multi-mode PWM control, soft-start, frequency jitter, and line-sense functions, all of which help improve performance, reduce EMI, and make the design easier to optimize for small adapters and similar supplies. For the TOP266VG variant in the eDIP-12B package, the datasheet shows it as a practical choice for universal-input flyback power supplies with good thermal handling and compact packaging. It is positioned for designs that need reliable output capability, strong protection behavior, and a balance of efficiency and space-saving construction. Features: Integrated 725 V power MOSFET. Multi-mode PWM control for higher efficiency over the full load range. 132 kHz default switching frequency, with 66 kHz selectable by pin connection. Fully integrated 17 ms soft-start. Frequency jitter to reduce EMI peaks. Line undervoltage and overvoltage protection. Output overvoltage, overload, overcurrent, and short-circuit protection. External current limit programmability through the X pin. Hysteretic thermal shutdown protection. Low-profile eDIP-12B package with heat transfer to PCB and heat sink. Specifications: Specification TOP266VG Value Family: TOPSwitch-JX Package: eDIP-12B (V Package) Maximum Output Power (230 VAC, Adapter): 24 W Maximum Output Power (85–265 VAC, Open Frame): 28.5 W Switching Frequency: 132 kHz, 66 kHz selectable Maximum Duty Cycle: 78% Soft-Start Time: 17 ms Drain Peak Current: 4.08 A Breakdown Voltage: 725 V On-State Resistance (25°C): 3.2 Ω On-State Resistance (100°C): 4.75 Ω (max) Thermal Resistance θJA: 68 °C/W or 58 °C/W Thermal Resistance θJC: 2 °C/W Pinout: DRAIN (D) CONTROL (C) EXTERNAL CURRENT LIMIT (X) VOLTAGE MONITOR (V) FREQUENCY (F) SOURCE (S) Applications: Notebook or laptop adapter. Generic adapter. Printer. LCD monitor. Set-top box. PC or LCD TV standby. Audio amplifier. Package Contents 1x TOP266VG Integrated Off-Line Switcher IC eDIP-12B Datasheet

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