Texas Instruments LM7360x-Q1 Step-Down Voltage Converters

Texas Instruments LM7360x-Q1 Step-Down Voltage Converters are easy-to-use synchronous step-down DC-DC converters capable of driving up to 5A (LM73605-Q1) or 6A (LM73606-Q1) of load current. This feature can be done from a supply voltage of 3.5V to 36V. The LM73605-Q1/LM73606-Q1 provides 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, FPWM option, power-good flag, precision enable, adjustable soft start, and tracking provides 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 a simple PCB layout with optimal EMI and thermal performance. Protection features include thermal shutdown, input under voltage lockout, cycle-by-cycle current limiting, and hiccup short-circuit protection. The Texas Instruments LM73605-Q1 and LM73606-Q1 devices are pin-to-pin compatible for easy current scaling.

Features

AEC-Q100 qualified for automotive applications
- Device temperature grade 1 (–40°C to +125°C junction operating temperature)
- Device HBM ESD Classification Level 2kV
- Device CDM ESD Classification Level C5
Wettable flanks QFN package (WQFN)
Low EMI and low switching noise
Low quiescent current
- 0.8µA in shutdown (typical)
- 15µA in active mode with no load (typical)
Wide voltage conversion range
- t_ON-MIN = 60ns (typical)
- t_OFF-MIN = 70ns (typical)

Low MOSFET ON-resistance
- R_{DS_ON_HS} = 53mΩ (typical)
- R_{DS_ON_LS} = 31mΩ (typical)
350kHz to 2.2MHz adjustable frequency range
Pin-selectable auto mode or forced PWM mode
Start-up into a pre-biased load, fixed or adjustable soft-start time, and tracking
Synchronizable to an external clock, internal compensation, Power-Good flag, and precision enable
Cycle-by-cycle current limiting, hiccup, UVLO, and thermal shutdown protections