Feature
- 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 SwitchingNoise
- Low Quiescent Current
- 0.8 μA in Shutdown (typical)
- 15 μAin Active Mode With No Load (typical)
- Wide VoltageConversion Range:
- tON-MIN =60 ns (typical)
- tOFF-MIN =70 ns (typical)
- Low MOSFET ON-Resistance:
- RDS_ON_HS = 53 m?(typical)
- RDS_ON_LS = 31 m?(typical)
- Adjustable Frequency Range: 350 kHz to2.2 MHz
- Pin-Selectable Auto Mode or Forced PWM Mode
- Start-up into Pre-Biased Load, Fixed or Adjustable Soft-Start Time, andTracking
- Synchronizable to External Clock,Internal Compensation, Power-Good Flag, and Precision Enable
- Cycle-by-Cycle Current Limiting, Hiccup, UVLO, and ThermalShutdown Protections
- Create a Custom Design With theWEBENCH? Power Designer usingLM73605-Q1orLM73606-Q1
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DescriptionThe 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 improveefficiency 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.
