Date: 27/01/2009

Dual-output, synchronous DC-DC controller to deliver 25 Amps

Maxim Integrated Products introduced the MAX15023, a dual-output, synchronous step-down controller capable of driving external MOSFETs to deliver at least 12A per output. Operating over a wide, 4.5V to 28V input range, this device integrates a ±1% accurate voltage reference to provide an output voltage from 0.6V to 85% of the input voltage.

Some of the features are

1. This device is flexible as it operates over a wide, 4.5V to 28V input range, allowing it to be used in 5V- or 12V-bus applications.
2. The switching frequency (200kHz to 1MHz), external compensation network, and current limit can also be adjusted to optimize designs in terms of space, performance, and cost.
3. It uses cycle-by-cycle lossless current sensing to reduce power loss and eliminate the need for an external sense resistor.
4. It's adaptive synchronization eliminates external freewheeling Schottky diodes.
5. Adaptive digital soft-start for controlled turn-on;
6. Two independent enable inputs and two independent power-good indicators with precise turn-on/turn-off thresholds, which can be used for supply monitoring and power sequencing.
7. Specified over the -40°C to +85°C extended temperature range.
8. Suitable for a variety of high-reliability applications such as telecom, networking, storage, and server equipment

Package 24-pin TQFN package in size of 4mm x 4mm

Price: start at $1.76 (1000-up, FOB USA).