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Automotive Qualified 3.5V to 36V, 5A Synchronous Step-Down Voltage Converter


Package | PIN: RNP | 30
Temp: Q (-40 to 125)
Carrier: Cut Tape
Qty Price
1-9 $6.41
10-24 $5.76
25-99 $5.38
100-249 $4.83
250-499 $4.51
500-749 $3.92
750-999 $3.39
1000+ $3.33


  • AEC-Q100 Qualified for Automotive Applications
    • Device Temperature Grade 1: –40°C to +125°C Ambient OperatingTemperature
    • Device HBM ESD Classification Level 2kV
    • Device CDM ESD Classification LevelC5
  • Wettable Flanks QFN Package (WQFN)
  • Low EMI and Low Switching Noise
  • Low Quiescent Current
    • 0.8 µA in Shutdown (typical)
    • 15 µAin Active Mode With No Load (typical)
  • Wide Voltage Conversion Range:
    • tON-MIN =60 ns (typical)
    • tOFF-MIN =70 ns (typical)
  • Low MOSFET ON-Resistance:
    • RDS_ON_HS = 53 mΩ(typical)
    • RDS_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

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Texas Instruments  LM73605QRNPTQ1

The LM73605-Q1/LM73606-Q1 familyof 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 asupply voltage ranging from 3.5 V to 36 V. The LM73605-Q1/LM73606-Q1 provideexceptional efficiency and output accuracy in a very small solution size. Peak current-mode controlis employed. Additional features such as adjustable switching frequency,synchronization to an external clock, FPWM option,power-good flag, precision enable, adjustable soft start, andtracking provide both flexible and easy-to-use solutions for a wide range of applications.Automatic frequency foldback at light load and optional externalbias improve efficiency over the entire load range.The family requires few external components and has a pinout designed for simple PCB layout withoptimal EMI and thermal performance. Protection features include thermal shutdown, inputundervoltage lockout, cycle-by-cycle current limiting, and hiccup short-circuit protection. TheLM73605-Q1 andLM73606-Q1 devices are pin-to-pincompatible for easy current scaling.