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INFINEON ICE2QS03GXUMA1 Quasi-Resonant PWM Controller

The ICE2QS03G is a high-performance off-line quasi-resonant PWM controller designed for power supply applications. It features digital frequency reduction for improved efficiency and ultra-low standby power through active burst mode. The integrated 500V startup cell ensures reliable startup, while protections like over-voltage, under-voltage, short-winding, and over-temperature safeguard the system. It supports a wide input voltage range up to 25V, making it ideal for adapters, TVs, monitors, and media players. The device includes a soft-start, cycle-by-cycle peak current limit, and precise zero-crossing detection, ensuring stable operation in flyback converters and similar topologies.

Authorized Distributors
Source:Newark
Part No:ICE2QS03GXUMA1
Stock:196
Inv Date:05-29-2026
Price: Unit price: $0.267
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Source:DigiKey
Part No:ICE2QS03GXUMA1
Stock:580
Inv Date:05-29-2026
Price: Unit price: $1.59
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Part No:ICE2QS03GXUMA1
Stock:2354
Inv Date:05-30-2026
Price: Unit price: $1.36
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Part No:ICE2QS03GXUMA1
Stock:0
Inv Date:05-29-2026
Price: Unit price: $0.555
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Part No:ICE2QS03GXUMA1
Stock:868
Inv Date:05-30-2026
Price: N/A
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INFINEON ICE2QS03GXUMA1 Quasi-Resonant PWM Controller Specifications:

  • Package: PG-DSO-8
  • Maximum HV voltage: 500V
  • Supply Voltage Range: 17.0-19.0V (turn-on), 9.8-11.2V (turn-off)
  • VCC Operating Range: 17V to 25V
  • Zero Crossing Threshold Voltage: 50-170 mV
  • Maximum Switching Frequency: 82 kHz in burst mode, typical 52 kHz
  • Soft-start Time: 8.5-12 ms
  • Peak Current Limitation: 1.09 V in normal mode, 0.39 V in burst mode
  • Feedback Pin Resistance: 14-33 kΩ
  • Maximum On-Time: 22-30 μs
  • Cycle-by-cycle peak current limit: 0.97-1.09 V
  • Protection: Over-voltage (output, VCC), Over-load, Over-temperature, Short winding, Auto restart mode
  • Operating Temp Range: -40°C to +130°C
  • Junction Temperature Limit: 130°C

Buy the Infineon Series ICE2QS03G Quasi-Resonant PWM: ICE2QS03G

Order the Infineon ICE2QS03G today and enhance your power supply designs. This advanced PWM controller features digital frequency reduction, active burst mode for low standby power, and robust protection functions. Its integrated 500V startup cell provides reliable start-up performance, making it ideal for adapters, TVs, and media players. With a wide input voltage range and a soft-start function, ICE2QS03G ensures stable operation, high efficiency, and excellent system protection in flyback converters and off-line power supplies. Purchase online now for dependable, cutting-edge power management.

Get Infineon ICE2QS03G today—built for ultra-efficient, reliable power conversion with integrated 500V startup cell and comprehensive protections.

Frequently Asked Questions

Where can I buy INFINEON ICE2QS03GXUMA1?

You can click on the BUY or RFQ button to purchase ICE2QS03GXUMA1 from an authorized INFINEON distributor.

How do I troubleshoot issues or seek technical support for part ICE2QS03GXUMA1?

You can download the ICE2QS03GXUMA1 datasheet or visit the INFINEON website for support.

Who is the manufacturer of ICE2QS03GXUMA1?

INFINEON

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