LM76003RNPT

The LM76002/LM76003 regulators are easy-to-use synchronous step-down DC/DC converters capable of driving load currents up to 2.5A (LM76002) or 3.5A (LM76003) with input voltages up to 60V. The LM76002/LM76003 solution offers an extremely small footprint while delivering excellent efficiency and output accuracy. Peak current mode control is employed. Adjustable features — such as adjustable switching frequency, synchronization, FPWM option, power-good flag, precision enable, adjustable soft-start, and tracking — provide a flexible and easy-to-use solution for a wide range of applications. Automatic frequency foldback under light load and an optional external bias supply further improve efficiency. The device requires minimal external components, and its pinout is designed to simplify PCB layout, delivering excellent EMI (CISPR22) and thermal performance. Protection features include input undervoltage lockout, thermal shutdown, cycle-by-cycle current limiting, and short-circuit protection. The LM76002/LM76003 devices are available in a 30-pin WQFN leadless package with wettable flanks.

Applications

• Telecom infrastructure
• Asset and fleet management systems
• Video surveillance
• Programmable logic controllers

Key features

• Integrated synchronous rectification
• Input voltage 3.5V to 60V (65V maximum)
• Output current: 2.5A (LM76002), 3.5A (LM76003)
• Output voltage 1V to 95% VIN
• Quiescent current 15μA in regulation
• Wide voltage conversion range
• tON-MIN = 65ns (typical)
• tOFF-MIN = 95ns (typical)
• Synchronization to external clock
• Power good flag
• Precision enable
• Adjustable soft-start (default 6.3ms)
• Voltage tracking
• Pin-selectable FPWM operation
• Adjustable frequency range: 300kHz to 2.2MHz
• High efficiency at light load (PFM)