Torex XDL601/02

The XDL601/02 are ultra-small, 1.5A, synchronous step-down Micro DC/DC Converters with integrated inductor and high-speed transient response. The superfast load transient performance is due to Torex’s innovative Hi-SAT COT control method, which, when compared to standard Constant On-Time (COT) control also provides less fluctuation in oscillation frequency against load and input voltage.

The XDL601/02 total solution size is only 30mm2 and is optimised for space constrained applications such as sensors, cameras, small control modules, telematics, infotainment & HMI.  The XDL601 operates with Hi-SAT COT plus fixed PWM mode with a 3.0MHz switching frequency whereas the XCL602 automatically switches between PWM and PFM (pulse-skipping) mode to maximise efficiency at lighter loads.

The input voltage range is 2.5V to 5.5V and the output voltage range is 0.8V to 3.3V (accuracy ±2.0%). The operating ambient temperature range is -40°C ~ 105°C and this series is AEC-Q100 Grade 2 compliant. In addition, Thermal shutdown, integral soft-start and a built-in UVLO function are also included for added protection.

The XDL601 is available in a small DFN3625-11B (3.6 x 2.5 x 1.6mm) package which has Wettable flanks.

Key features

• Operates from 2.5V to 5.5V
• Up to 1.5A Output Current
• Output Voltages from 0.8V to 3.3V
• Hi-SAT COT with PWM Control or PWM/PFM Auto-Switching
• AEC-Q100 qualified (-40˚C ~ +105˚C)

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Key benefits

• Integrated Coil Structure
  • More than 50% of PCB Area Savings
  • Minimized Radiated Noise (EMI)
• High Efficiency at 3.0MHz Operation
  • 93% (at VIN=5.0V, VOUT=3.3V/500mA)
• Enhanced COT Technology
  • Fast Transient Response
  • Stable Frequency Operation
  • Superior Load Regulation
• High Reliability 
  • Exposed Flanks Package 
  • High Thermal Performance

Applications

• Advanced driver-assistance systems
• Automotive Sensors & Modules
• Infotainment & HMI
• Climate Control

Block diagram