TOP244P Off-Line Switching Power Converter IC PDIP-8B

Description

TOP244P Off-Line Switching Power Converter IC PDIP-8B TOP244P Off-Line Switching Power Converter IC PDIP-8B is a high-performance offline switching power converter from the TOPSwitch-GX family. It integrates a high-voltage power MOSFET, PWM controller, fault protection, and control circuitry into a single device, reducing component count and simplifying power supply design. Designed for compact and energy-efficient AC-DC converters, the IC offers programmable current limiting, line sensing, soft-start, thermal shutdown, frequency jittering for EMI reduction, and excellent standby efficiency. It is widely used in switch-mode power supplies, industrial equipment, consumer electronics, adapters, and embedded power conversion applications. Features Integrated high-voltage 700V power MOSFET and PWM controller. Built-in Eco Smart technology for low standby power consumption. Programmable current limit for flexible power supply design. Integrated soft-start minimizes startup stress and overshoot. Frequency jittering helps reduce EMI emissions. Automatic thermal shutdown with hysteretic recovery. Line under-voltage and over-voltage protection. Operates without dummy load at no-load conditions. Requires very few external components. PDIP-8B package for through-hole applications. Specifications Parameter Details Product Type Off-Line Switching Power Converter IC Series TOPSwitch-GX Model TOP244P Package PDIP-8B Mounting Type Through Hole Breakdown Voltage 700V(Min) CONTROL Pin Voltage 5.85V Supply Current 1.5mA Switching Frequency 132kHz(Internal, Fixed) Maximum Duty Cycle 78% Current Limit (TOP244P/G) 1.00A(Internal, di/dt=200mA/µs,25°C) Current Limit (TOP244Y/R/F) 1.35A(Internal, di/dt=270mA/µs,25°C) ON-State Resistance (25°C) 6.0Ω ON-State Resistance (100°C) 10.0Ω Auto-Restart Upper Threshold 5.8V Auto-Restart Lower Threshold 4.8V Soft-Start Time 10ms PWM Gain -23%/mA Thermal Shutdown Temperature 140°C Thermal Shutdown Hysteresis 75°C Operating Junction Temperature -40°Cto+150°C Storage Temperature -65°Cto+150°C Dimensions Pinout: Pin Number Pin Name Function / Description 1 M (Multi-Function) Multi-function pin used for line overvoltage protection, remote ON/OFF control, synchronization, and programmable current limit. 2 S (Source) Source terminal of the internal power MOSFET. Primary-side ground reference. 3 S (Source) Source terminal of the internal power MOSFET. Connected internally to Pin 2. 4 C (Control) Control pin. Provides feedback input, error amplifier connection, and supply bypass capacitor connection. 5 D (Drain) Drain terminal of the internal high-voltage power MOSFET. Connected to the primary winding of the transformer. 6 NC No internal connection (Not Connected). 7 S (Source) Source terminal of the internal power MOSFET. Connected internally to Pins 2 and 3. 8 S (Source) Source terminal of the internal power MOSFET. Connected internally to Pins 2, 3, and 7. Applications AC-DC switch-mode power supplies. Power adapters and battery chargers. Industrial control power supplies. Consumer electronic power supplies. Home appliance power modules. Set-top boxes and networking equipment. LED driver power supplies. Embedded auxiliary power supplies. Instrumentation power supplies. Smart energy and IoT power systems. Package Contents 1 x TOP244P Off-Line Switching Power Converter IC PDIP-8B Datasheet TOP244P

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