LM76003RNPR

The LM76002/LM76003 regulator is an easy-to-use synchronous step-down DC-DC converter capable of driving up to 2.5 A (LM76002) or 3.5 A (LM76003) of load current from an input up to 60 V. The LM76002/LM76003 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, FPWM option, power-good flag, precision enable, adjustable soft start, and tracking provide 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. This device requires few external components and has a pinout designed for simple PCB layout with best-in-class EMI (CISPR22) and thermal performance. Protection features include input undervoltage lockout, thermal shutdown, cycleby-cycle current limit, and short-circuit protection. The LM76002/LM76003 device is available in the WQFN 30-pin leadless package with wettable flanks.

Applications

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

Key features

• Integrated synchronous rectification
• Input voltage 3.5 V to 60 V (65 V maximum)
• Output current:
• LM76002: 2.5 A
• LM76003: 3.5 A
• Output voltage 1 V to 95% VIN
• 15-μA Quiescent current in regulation
• Wide voltage conversion range
• tON-MIN = 65 ns (typical)
• tOFF-MIN = 95 ns (typical)
• System-level features
• Synchronization to external clock
• Power-good flag
• Precision enable
• Adjustable soft-start (6.3 ms default)
• Voltage tracking capability
• Pin-selectable FPWM operation
• Adjustable frequency range: 300 kHz to 2.2 MHz
• High-efficiency at light-load architecture (PFM)
• Protection features
• Cycle-by-cycle current limit
• Short-circuit protection with hiccup mode
• Overtemperature thermal shutdown protection
• Create a custom design using the LM76002/LM76003 with the WEBENCH Power Designer