MAX1858 Dual 180° Out-of-Phase PWM Step-Down Controller With Power Sequencing And POR

The MAX1858 dual, synchronized, Step-down controller generates two outputs from input supplies ranging from 4.75V to 23V. Each output is adjustable from sub-1V to 18V and supports loads of 10A or higher. Input voltage ripple and total RMS input ripple current are reduced by synchronized 180 out-of-phase operation.
The switching frequency is adjustable from 100kHz to 600kHz with an external resistor. Alternatively, the controller CAN be synchronized to an external Clock generated to another MAX1858 or a system Clock One MAX1858 CAN be set to generate an in-phase, or 90 out-of-phase, Clock signal for synchronization with additional controllers. This allows two controllers to operate either as an interleaved two- or four-phase system with each output shifted by 90. The device also features first-on/last-off power sequencing for compatibility with DSPs ASICs and FPGAs as well as soft-start and soft-stop to ensure reliable and repeatable power sequencing.
The MAX1858 eliminates the need for current-sense resistors by utilizing the low-side MOSFET's on-resistance as a current-sense element. This protects the DC-DC components from damage during output-overload conditions or when output short-circuit faults without requiring a current-sense resistor. Adjustable foldback current limit reduces power dissipation during short-circuit condition. A power-on reset output signals the system when both outputs reach regulation.
The MAX1858 is available in a 24-pin QSOP package. An evaluation kit is available to speed designs.
By Maxim Integrated Products
MAX1858 's PackagesMAX1858 's pdf datasheet

MAX1858 Pinout, Pinouts
MAX1858 pinout,Pin out
This is one package pinout of MAX1858,If you need more pinouts please download MAX1858's pdf datasheet.

MAX1858 Application circuits
MAX1858 circuits
This is one application circuit of MAX1858,If you need more circuits,please download MAX1858's pdf datasheet.

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