Torex Semiconductor XC9290/XC9291 Step-Down DC/DC Converters

Torex XC9290 / XC9291 Step-down DC/DC Converters feature HiSAT-COT® control and a synchronous rectification buck DC/DC converter. The XC9290 / XC9291 devices offer a small 3.52mm2 mounting area, high-speed response, and ultra-low radiation noise. Using HiSAT-COT, Torex XC9290 / XC9291 Step-down DC/DC Converters provide faster response than PWM control methods, which allows for a reduced capacitor size with stable operation. The converters have an ultra-compact layout and improved oscillation frequency for greater user control. The converters feature an extended battery life, reduced heat generation, and are ideal for consumer and industrial applications.

Features

  • HiSAT-COT control method
  • Extremely small mounting area (3.52mm2)
  • Faster response time compared to PWM control
  • Smaller capacitor size with stable operation
  • Ultra-compact layout
  • Improves oscillation frequency variation (4MHz, 6MHz)
  • Achieves 90% efficiency
  • Extended battery life
  • Reduced heat generation
  • Low EMI
  • Low ripple
  • Very low radiation noise
  • Lead-free and RoHS-compliant

Applications

  • Smartphones/mobile phones
  • Wireless earphones/headsets
  • Wearable devices
  • DSC/camcorders
  • Portable game consoles
  • Smartcards
  • Module power supplies
  • Various small power sources

Specifications

  • 2.5V to 6V input voltage range
  • 0.7V to 3.6V output voltage range
  • 600mA output current
  • 11μA quiescent current
  • 4MHz, 6MHz oscillation frequency rating
  • -40°C to +105°C operating ambient temperature range

Application Circuit

Application Circuit Diagram - Torex Semiconductor XC9290/XC9291 Step-Down DC/DC Converters
Veröffentlichungsdatum: 2023-10-20 | Aktualisiert: 2024-08-08