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Home » NEWEST Products » New by Category » Semiconductors » Power Management ICs » IFX90121 2.2MHz Step-Down Regulator - Infineon
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Infineon IFX90121 2.2MHz Step-Down Regulator

Infineon IFX90121 2.2MHz Step-Down Regulator

Infineon's IFX90121 2.2MHz Step-Down Regulator is a high frequency PWM step-down DC/DC converter with a wide input voltage range from 4.75 to 45V that makes the IFX90121 suitable for a wide variety of applications. The switching frequency of 2.2MHz allows the use of small inductors and capacitors, resulting in minimized board space. Pulse Frequency Modulation is used to optimize efficiency in light load conditions. The low quiescent current in shutdown (less than 45μA at nominal input voltage) makes the device suitable for battery powered systems. Additional applications include smart metering and general purpose industrial.

  • 500mA step down voltage regulator
  • 5V Output voltage
  • ±2% output voltage tolerance
  • Low quiescent current (less than 45μA at nominal input voltage)
  • Integrated power transistor
  • Current mode PWM regulation
  • PFM mode for light load current
  • Input voltage range from 4.75V to 45V
  • 2.2MHz switching frequency
  • 100% Duty cycle
  • Synchronization input

  • Very low shutdown current consumption (<2μA)
  • Soft-start function
  • Input under voltage lockout
  • Suited for industrial applications: Tj = -40°C to +125°C
  • Green Product (RoHS compliant)

  • Battery powered systems
  • Smart Metering
  • General purpose industrial applications
Block Diagram
Block Diagram
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