LM76002/LM76003 Synchronous Step-Down Voltage Converters

Texas Instruments' LM76002 and LM76003 are 3.5 V to 60 V, 2.5 A/3.5 A synchronous step-down voltage regulators

Image of Texas Instruments' LM76002/LM76003 Synchronous Step-Down Voltage ConvertersTexas Instruments' LM76002 and LM76003 regulators are easy-to-use synchronous step-down DC-DC converters 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 and LM76003 provide 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. These devices require few external components and have a pinout designed for simple PCB layout with best-in-class EMI (CISPR22) and thermal performance. Protection features include thermal shutdown, input undervoltage lockout, cycle-by-cycle current limit, and short-circuit protection. The LM76002 and LM76003 devices are available in the WQFN 30-pin leadless package with wettable flanks.

Features
  • Integrated synchronous rectification
  • Input voltage 3.5 V to 60 V (65 V max.)
  • 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 (typ.)
    • tOFF-MIN = 95 ns (typ.)
  • Create a custom design using the LM76002/LM76003 with the WEBENCH® Power Designer
  • 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
  • High-efficiency at light-load architecture (PFM)
  • Protection features
    • Cycle-by-cycle current limit
    • Short-circuit protection with hiccup mode
    • Overtemperature thermal shutdown protection
Applications
  • Telecommunications infrastructure
  • Asset and fleet management systems
  • Video surveillance
  • Programmable logic controllers

LM76002/LM76003 Synchronous Step-Down Voltage Converters

ImageManufacturer Part NumberDescriptionAvailable QuantityView Details
LM76002RNPT datasheet linkIC REG BUCK ADJ 2.5A 30WQFNLM76002RNPTIC REG BUCK ADJ 2.5A 30WQFN171 - Immediate
LM76002RNPT product page link
LM76003RNPT datasheet linkIC REG BUCK ADJ 3.5A SYNC 30WQFNLM76003RNPTIC REG BUCK ADJ 3.5A SYNC 30WQFN23 - Immediate
LM76003RNPT product page link
LM76002RNPR datasheet linkIC REG BUCK ADJ 2.5A 30WQFNLM76002RNPRIC REG BUCK ADJ 2.5A 30WQFN0LM76002RNPR product page link
LM76003RNPR datasheet linkIC REG BUCK ADJ 3.5A SYNC 30WQFNLM76003RNPRIC REG BUCK ADJ 3.5A SYNC 30WQFN0LM76003RNPR product page link
LM76002QRNPRQ1 datasheet linkIC REG BUCK ADJ 2.5A 30WQFNLM76002QRNPRQ1IC REG BUCK ADJ 2.5A 30WQFN0LM76002QRNPRQ1 product page link
LM76003QRNPRQ1 datasheet linkIC REG BUCK ADJ 3.5A SYNC 30WQFNLM76003QRNPRQ1IC REG BUCK ADJ 3.5A SYNC 30WQFN0LM76003QRNPRQ1 product page link
LM76002QRNPTQ1 datasheet linkIC REG BUCK ADJ 2.5A 30WQFNLM76002QRNPTQ1IC REG BUCK ADJ 2.5A 30WQFN1500 - Factory StockLM76002QRNPTQ1 product page link
LM76003QRNPTQ1 datasheet linkIC REG BUCK ADJ 3.5A SYNC 30WQFNLM76003QRNPTQ1IC REG BUCK ADJ 3.5A SYNC 30WQFN0LM76003QRNPTQ1 product page link

Evaluation Board

ImageManufacturer Part NumberDescriptionAvailable QuantityView Details
LM76002EVM-500K datasheet linkEVAL BOARD FOR LM76002LM76002EVM-500KEVAL BOARD FOR LM760024 - Immediate
54 - Factory Stock
LM76002EVM-500K product page link
Published: 2018-03-15