4.5V to 42V, 5A High-Efficiency, DC-DC Step-Down Power Module with Integrated Inductor

The Himalaya series of voltage regulator ICs and power modules enable cooler, smaller and simpler power supply solutions. The MAXM17546 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 4.5V to 42V and delivers up to 5A continuous output current with excellent line and load regulation over an output-voltage range of 0.9V to 12V. 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 MAXM17546 is available in a low-profile, highly thermal-emissive, compact, 29-pin, 9mm x 15mm x 4.32mm SiP package that reduces power dissipation in the package and enhances efficiency. The package is easily soldered onto a printed circuit board and suitable for automated circuit board assembly.

Applications

* Base-Station Point-of-Load Regulator * Distributed Supply Regulation * FPGA and DSP Point-of-Load Regulator * HVAC and Building Control * Test and Measurement Equipment

* Reduces Design Complexity, Manufacturing Risks, and Time-to-Market

* Integrated Synchronous Step-Down DC-DC Converter

* Integrated Inductor

* Integrated FETs

* Integrated Compensation Components

* Saves Board Space in Space-Constrained Applications

* Complete Integrated Step-Down Power Supply in a Single Package

* Small Profile 9mm x 15mm x 4.32mm SiP Package

* Simplified PCB Design with Minimal External BOM Components

* Offers Flexibility for Power-Design Optimization

* Wide Input-Voltage Range from 4.5V to 42V

* Output-Voltage Adjustable Range from 0.9V to 12V

* Adjustable Frequency with External Frequency Synchronization (100kHz to 2.2MHz)

* PWM, PFM, or DCM Current-Mode Control

* Programmable Soft-Start

* Auxiliary Bootstrap LDO for Improved Efficiency

* Optional Programmable EN/UVLO

* Operates Reliably in Adverse Industrial Environments

* Integrated Thermal Protection

* Hiccup Mode Overload Protection

* Active-Low RESET Output-Voltage Monitoring

* Ambient Operating Temperature Range (-40°C to +125°C) / Junction Temperature Range (-40°C to +150°C)