MAXM17xxx Power Module

By Maxim Integrated 169

MAXM17xxx Power Module

Maxim's Himalaya series of voltage regulator ICs and power modules enable cooler, smaller, and simpler power supply solutions. The MAXM17xxx family is an easy-to-use, step-down power module that combines a switching power supply controller, dual n-channel MOSFET power switches, fully shielded inductor, and the compensation components in a low-profile, thermally-efficient, system-in-package (SiP). The device operates over a wide input voltage range of 4.5 V to 42 V and delivers up to 1.7 A,  2.5 A, or 3.5 A continuous output current with excellent line and load regulation over an output voltage range of 0.9 V to 12 V. The device only requires five external components to complete the total power solution. The high level of integration significantly reduces design complexity, manufacturing risks, and offers a true plug-and-play power supply solution, reducing time-to-market.

The device can be operated in the pulse-width modulation (PWM), pulse-frequency modulation (PFM), or discontinuous conduction mode (DCM) control schemes.

The MAXM17xxx is available in a low-profile, highly thermal-emissive, compact 29-pin, 9 mm x 15 mm x 2.8 mm SiP package that reduces power dissipation in the package and enhances efficiency. The package is easily soldered onto a printed circuit board (PCB) and is suitable for automated circuit board assembly. The device can operate over the industrial temperature range from -40°C to 125°C.

Key Features

  • Reduces design complexity, manufacturing risks, and time-to-market
    • Integrated switching power supply controller and dual-MOSFET power switches
    • Integrated inductor
    • Integrated compensation components
    • Integrated thermal-fault protection
    • Integrated peak current limit
  • Saves board space in space-constrained applications
    • Complete integrated step-down power supply in a single package
    • Small profile 9 mm x 15 mm x 2.8 mm SiP package
    • Simplified PCB design with minimal external BOM components

  • Offers flexibility for power-design optimization
    • Wide input voltage range from 4.5 V to 42 V
    • Output-voltage adjustable range from 0.9 V to 12 V
    • MAXM17543: 2.5 A output current
    • MAXM17544: 3.5 A output current
    • MAXM17545: 1.7 A output current
    • Adjustable frequency with external frequency synchronization (100 kHz to 1.8 MHz)
    • Soft-start programmable
    • Autoswitch PWM, PFM, or DCM current-mode control
    • Optional programmable EN/UVLO