TOP233YN Offline Switching Regulator 5.85V 1.5mA TO-220-7B

Description

TOP233YN Offline Switching Regulator 5.85V 1.5mA TO-220-7B The TOP233YN belongs to the TOP Switch-FX family of power management ICs, designed to simplify the design of switch-mode power supplies (SMPS). It integrates a high-voltage power MOSFET, PWM controller, start-up circuitry, and multiple protection features into a single chip. This high level of integration reduces the need for external components, making it ideal for compact and cost-effective power supply designs such as adapters, chargers, and standby power supplies. This IC operates directly from rectified AC mains, supporting universal input ranges. It includes advanced features like soft-start, auto-restart during fault conditions, thermal shutdown, and line over/under-voltage protection. The device also supports frequency jittering to reduce EMI and allows flexible configuration through its multi-function pin. Its TO-220-7B package provides better thermal performance, making it suitable for higher power applications. Features: Integrated high-voltage power MOSFET. Built-in PWM controller. Soft-start for reduced start-up stress. Auto-restart and fault protection. Thermal shutdown protection. Line over-voltage and under-voltage protection. Frequency jittering for EMI reduction. Cycle skipping for low no-load power consumption. External current limit programmability. Remote ON/OFF capability. High efficiency operation. Reduced external component count. Specifications: Parameter Value / Range Switching Frequency 132kHz (66kHz optional) Maximum Duty Cycle 78% Breakdown Voltage (BVdss) 700V Peak Drain Current 1.6A Typical RDS(on) 4.0Ω (at Tj=25°C) CONTROL Pin Voltage 5.85V (shunt regulation) CONTROL Pin Current 1.5mA (enabled) MULTI‑FUNCTION Pin Voltage 2.6V (source) Remote Off Consumption 160mW (230VAC) Soft‑Start Time 10ms Auto‑Restart Duty Cycle 4% Thermal Shutdown 135°C with 70°C hysteresis Operating Junction Temp -40°C to +150°C Pinout: Pin Number Pin Name Description 1 CONTROL (C) Error amplifier and feedback current input. Shunt regulator connection. Auto‑restart / compensation capacitor. 3 MULTI-FUNCTION (M) OV/UV line sensing, line feed‑forward with DCmax reduction, external current limit setting, remote ON/OFF, synchronization. 4 SOURCE (S) Output MOSFET source connection. Primary side circuit reference. 5 FREQUENCY (F) Switching frequency select: tie to SOURCE for 132 kHz, tie to CONTROL for 66 kHz. 7 DRAIN (D) High‑voltage power MOSFET drain. Internal start‑up bias current. Current limit sense point. Applications: AC-DC power adapters. Battery chargers. Standby power supplies. TV/DVD/set-top box power supplies. Industrial SMPS. LED drivers. Consumer electronics power supplies. Package Included: 1x TOP233YN Five-terminal MOSFET 5.85V 1.5mA TO-220-7B. Documents: TOP233YN Datasheet.

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