General Description

The MAX15023 dual, synchronous step-down controller operates from a 5.5V to 28V or 5V ±10 input voltage range and generates two independent output voltages. Each output is adjustable from 85 of the input voltage down to 0.6V and supports loads of 12A or higher. Input voltage ripple and total RMS input ripple current are reduced by interleaved 180° out-of-phase operation.

Features

● 5.5V to 28V or 5V ±10 Input Supply Range

● 0.6V to (0.85 x VIN) Adjustable Outputs

● Adjustable 200kHz to 1MHz Switching Frequency

● Guaranteed Monotonic Startup into a Prebiased Load

● Lossless, Cycle-by-Cycle, Low-Side, Source Peak Current Limit with Adjustable, TemperatureCompensated Threshold

● Cycle-by-Cycle, Low-Side, Sink Peak Current-Limit Protection

● Proprietary Adaptive Internal Digital Soft-Start

● ±1 Accurate Voltage Reference

● Internal Boost Diodes

● Adaptive Synchronous Rectification Eliminates External Freewheeling Schottky Diodes

● Hiccup-Mode Short-Circuit Protection and Thermal Shutdown

● Power-Good Outputs and Analog Enable Inputs for Power Sequencing

Applications

● Point-of-Load Regulators

● Set-Top Boxes

● LCD TV Secondary Supplies

● Switches/Routers

● Power Modules

● DSP Power Supplies