All trademarks are the property of their respective owners.
DescriptionThe LM73605/LM73606RNPT family of devices are easy-to-use synchronousstep-down DC-DC converters capable of driving up to 5 A (LM73605) or 6 A(LM73606) of load currentfrom a supply voltage ranging from 3.5 V to 36 V. The LM73605/LM73606RNPT 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 anexternal clock, FPWM option, power-good flag, precision enable, adjustable soft start, and trackingprovide both flexible and easy-to-use solutions for a wide range of applications. Automaticfrequency foldback at light load and optional external bias improve efficiency over the entire loadrange. The family requires few external components and has a pinout designed for simple PCB layoutwith optimal EMI and thermal performance. Protection features include thermal shutdown, inputundervoltage lockout, cycle-by-cycle current limiting, and hiccup short-circuit protection. TheLM73605 and LM73606RNPT devices are pin-to-pin compatible for easy current scaling.
Feature
- Synchronous Rectification
- WettableFlanks QFN Package (WQFN)
- Low Quiescent Current
- 0.8 μA in Shutdown (typical)
- 15 μA in 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 m?(typical)
- RDS_ON_LS = 31 m?(typical)
- External Bias Input to ImproveEfficiency
- Pin-Selectable Auto Mode or Forced PWMOperation
- Adjustable Frequency Range: 350 kHz to 2.2 MHz
- Synchronizable to External Clock
- InternalCompensation
- Power-Good Flag
- Precision Enable to ProgramSystem UVLO
- Flexible Soft-Start :
- Start-up into Pre-Biased Load
- Fixed or Adjustable Soft-Start Time
- Output Voltage Tracking
- Cycle-by-Cycle CurrentLimiting
- Short-Circuit Protection With Hiccup Mode
- Thermal Shutdown Protection
- Create a CustomDesign With the WEBENCH? PowerDesigner usingLM73605orLM73606
All trademarks are the property of their respective owners.
DescriptionThe LM73605/LM73606 family of devices are easy-to-use synchronousstep-down DC-DC converters capable of driving up to 5 A (LM73605) or 6 A(LM73606) of load currentfrom a supply voltage ranging from 3.5 V to 36 V. The LM73605/LM73606 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 anexternal clock, FPWM option, power-good flag, precision enable, adjustable soft start, and trackingprovide both flexible and easy-to-use solutions for a wide range of applications. Automaticfrequency foldback at light load and optional external bias improve efficiency over the entire loadrange. The family requires few external components and has a pinout designed for simple PCB layoutwith optimal EMI and thermal performance. Protection features include thermal shutdown, inputundervoltage lockout, cycle-by-cycle current limiting, and hiccup short-circuit protection. TheLM73605 and LM73606 devices are pin-to-pin compatible for easy current scaling.
