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Analog Devices / Maxim Integrated MAX77504 Synchronous 3A Step-Down DC-DC Converter

Analog Devices Inc. MAX77504 Synchronous 3A Step-Down DC-DC Converter is optimized for portable 2-cell and 3-cell battery-operated applications. The converter operates on an input supply voltage between 2.6V and 14V. The output voltage is adjustable between 0.6V and 6V with external feedback resistors. The device features a low-IQ SKIP mode, allowing excellent light load efficiency. The MAX77504 can be synchronized by driving the FPWM pin with an external clock. Dedicated enable, power-OK, and FPWM pins allow simple hardware control. The SEL input easily configures switching frequency, gain, and output active discharge options. Built-in under-voltage lockout (UVLO), output active discharge, cycle-by-cycle inductor current limit, thermal shutdown, and short-circuit protection ensure safe operation under abnormal operating conditions.

Features

  • 3A single-channel buck regulator
  • 2.6V to 14V input voltage
  • 0.6V to 6V output voltage range
  • 0.5MHz to 1.5MHz fixed-frequency switching options
  • High efficiency, low IQ extends battery life
    • 94% peak efficiency at 7.4VIN, 3.3VOUT (2520 inductor)
    • 10μA ISUP (12VIN, 1.8VOUT)
    • OUT powers VL automatically (VOUT > 1.7V) for low IQ
  • Enable pin (EN) for direct hardware control
  • External clock synchronization is available through the FPWM/SYNC pin
  • Power-OK output (POK) monitors VOUT quality
  • Protection features
    • Cycle-by-Cycle inductor current limit
    • Short-circuit hiccup mode, UVLO, and thermal shutdown protection
    • Soft-start
  • FC2QFN or WLP package option
    • 2.5mm x 2.5mm (0.6mm max. height) 12-Lead FC2QFN, 0.5mm pitch
    • 1.7mm x 1.7mm (0.7mm max. height) 16-Bump WLP, 0.4mm pitch, 4x4 array
  • All WLP Package Bumps (Except POK) routable on a non-HDI PCB

Applications

  • 1- to 3-cell Li+/Li-ion battery-powered devices
  • Professional radio, handheld computers
  • Mirrorless cameras, DSLR, and notebook computers
  • Portable scanners, POS terminals, printers
  • Space-constrained portable electronics

Associated Development Tool

Analog Devices / Maxim Integrated MAX77504EVKIT Converter Evaluation Kit

Provides a proven design to evaluate the MAX77504, a 3A high-efficiency buck converter.

Learn Moreom Analog Devices / Maxim Integrated MAX77504EVKIT Converter Evaluation Kit View Productsrelaterat till Analog Devices / Maxim Integrated MAX77504EVKIT Converter Evaluation Kit

Simplified Application Circuit

Application Circuit Diagram - Analog Devices / Maxim Integrated MAX77504 Synchronous 3A Step-Down DC-DC Converter
Publicerad: 2019-12-10 | Uppdaterad: 2025-09-25