Torex XD9267/68

The XD9267/68 is a synchronous step-down DC/ DC with P-Ch High Side Switch to ensure low voltage operation with 100% max duty ratio. It can operate from3.0V~36.0V and deliver loads up to 600mA.Designed for very high efficiencies at low output loads,with low quiescent current and automatic PFM/PWM mode.

The XD9267/68 also works with Low ESR ceramic capacitors and comes with a choice of two switching frequencies, adjustable soft start and a power good output.
Available in the ultra-small USP-6C package, measuring only 2.0 x 1.8 x 0.6mm an extremely small DC/DC circuit can be implemented with a minimal number of external components.

The XD9267/68 includes a fold-back type current limit circuit and the IC will automatically resume normal operation as soon as the over-current condition disappears.

Key features

• Wide 3.0V to 36V Operating Input Range (abs. max 40V)
• Up to 600mA Output Current
• High (2.2MHz) Frequency Operation
• Adjustable 1V to 25V Output Voltage Range 
• CISPR25 Class 5 Compliant
• AEC-Q100 qualified (-40˚C ~ +105˚C)

Key benefits

• Space Saving Solution
  • Smallest-In-Class USP-6C Package (2.0 x 1.8mm)
  • Extremely Small-Value Inductor (3.3µH)
  • Minimised External Component Count
• Ultra-Low IQ and High Efficiency at Light Load Conditions
  • 12.6µA in Sleep Mode
  • 1.65µA in Shutdown Mode 
• Low Voltage Operation to Support Cold-Cranking Conditions
  • 100% Duty Cycle
  • Minimum Input Voltage of 3V

Applications

• Automotive Sensors & Modules
• Infotainment & HMI
• Climate Control
• Industrial Automation & Sensors (industrial grade XC9267/68 version)

Block diagram