36V, 8A/10A Fully Integrated Buck Converter with 20μA Quiescent Current and Dual-Phase Capability

The MAX42408/MAX42410 are highly-integrated synchronous buck converters with internal high-side and low-side switches. The ICs deliver up to 8A/10A with input voltage from 4.5V to 36V. The MAX42408/MAX42410 can operate in the dropout mode by running at very high duty cycle, which make them ideal for industrial applications.

The MAX42408/MAX42410 offer programmable output-voltage options. High switching frequency at 1.5MHz and 400kHz options allow for small external components and reduced output ripple. SYNC input programmability enables three modes for optimized performance: forced PWM mode, skip mode with ultra-low quiescent current, and synchronization to an external clock.

The MAX42408/MAX42410 also come with dual-phase capability, which allows up to 20A designs. Two ICs can be configured as a controller and target with dynamic current sharing and 180º out-of-phase operation.

The MAX42408/MAX42410 are available in a small 3.5mm x 3.75mm, 17-pin FC2QFN package. They are pin-to-pin compatible with the MAX42405/MAX42406 (5A to 6A) family of products.

APPLICATIONS

* Point-of-Load

* Industrial Automation

* Distributed DC Power Systems

* High-Power DC/DC Converter in Small Solution Size

* Operating VIN range of 4.5V to 36V

* Synchronous DC-DC Converter with Integrated FETs

* 8A/10A Maximum Output Current

* 400kHz and 1.5MHz Fixed Frequency Options

* Fixed Soft-Start Time

* 2.5ms for 400kHz

* 3.5ms for 1.5MHz

* 36ns Minimum On-Time

* Programmable Output Voltage

* 0.8V to 10V for 400kHz

* 0.8V to 6V for 1.5MHz

* Symmetric and Balanced SUP and PGND Pinout Placement for Better EMI Performance

* Thermally-Enhanced 3.5mm x 3.75mm, 17-Pin FC2QFN Package