LM73606-Q1

• AEC-Q100-qualified for automotive applications
  • Device temperature grade 1: –40°C to +125°C ambient operating temperature
  • Device HBM ESD classification level 2 kV
  • Device CDM ESD classification level C5
• Wettable flanks QFN package (WQFN)
• Low EMI and low switching noise
• Low quiescent current
  • 0.8 µA in shutdown (typical)
  • 15 µA in active mode with no load (typical)
• Wide voltage conversion range:
  • t_ON-MIN = 60 ns (typical)
  • t_OFF-MIN = 70 ns (typical)
• Low MOSFET ON-resistance:
  • R_{DS_ON_HS} = 53 mΩ (typical)
  • R_{DS_ON_LS} = 31 mΩ (typical)
• Adjustable frequency range: 350 kHz to 2.2 MHz
• Pin-selectable auto mode or forced PWM mode
• Start-up into pre-biased load, fixed or adjustable soft-start time, and tracking
• Synchronizable to external clock, internal compensation, power-good flag, and precision enable
• Cycle-by-cycle current limiting, hiccup, UVLO, and thermal shutdown protections
• Create a custom design with the WEBENCH power designer using LM73605-Q1 or LM73606-Q1

The LM73605-Q1/LM73606-Q1family of devices are easy-to-use synchronous step-down DC/DC converters capable of driving up to 5 A (LM73605-Q1)or 6 A (LM73606-Q1) of load current from a supply voltage ranging from 3.5 V to 36 V. The LM73605-Q1/LM73606-Q1 provide exceptional efficiency and output accuracy in a very small solution size. Peak current-mode control is employed. Additional features such as adjustable switching frequency, synchronization to an external clock, power-good flag, precision enable, adjustable soft start, and tracking provide both flexible and easy-to-use solutions for a wide range of applications. Automatic frequency foldback at light load and optional external bias improve efficiency over the entire load range. The family requires few external components and has a pinout designed for simple PCB layout with optimal EMI and thermal performance. Protection features include thermal shutdown, input undervoltage lookout, cycle-cy-cycle current limiting, and hiccup short-citcuit protection. The LM73605-Q1 and LM73606-Q1 devices are pin-to-pin compatible for easy current scaling.