Professional IC Distribution & Technical Solutions

The NCP1052ST136T3G is a monolithic high-voltage switching regulator from ON Semiconductor. It is designed for offline power supply applications, providing a compact and efficient solution for low-power systems.

Specifications:

• Input Voltage Range: 85 V to 265 V AC
• Output Voltage: Adjustable (depends on external components)
• Output Power: Up to 5 W (depending on configuration)
• Switching Frequency: 100 kHz (fixed)
• Maximum Duty Cycle: 80%
• Start-Up Current: 100 µA (typical)
• Operating Current: 2.5 mA (typical)
• Peak Current Limit: 136 mA (fixed)
• Operating Temperature Range: -40°C to +125°C
• Package: SOT-223 (4-pin)

Descriptions:

The NCP1052ST136T3G integrates a high-voltage power switch, oscillator, control circuitry, and protection features into a single chip. It is commonly used in flyback and buck converter topologies for offline power supplies, such as adapters, auxiliary power supplies, and standby circuits.

Features:

• Integrated 700 V Power MOSFET
• Auto-Restart Protection (for overload and short-circuit conditions)
• Built-in Soft-Start (reduces inrush current)
• Frequency Jittering (reduces EMI emissions)
• Under-Voltage Lockout (UVLO)
• Thermal Shutdown Protection
• Low Standby Power Consumption

This device is suitable for cost-effective, space-constrained applications requiring reliable offline power conversion.