2A Synchronous Buck Regulator with Integrated MOSFETs

The ISL8502A is a synchronous buck controller with internal MOSFETs packaged in a small 4mmx4mm QFN package. The ISL8502A can support a continuous load of 2A and has a very wide input voltage range. With the switching MOSFETs integrated into the IC, the complete regulator footprint can be very small and provide a much more efficient solution than a linear regulator.

Features

• Up to 2A Continuous Output Current

• Integrated MOSFETs for Small Regulator Footprint

• Adjustable Switching Frequency, 500kHz to 1.2MHz

• Tight Output Voltage Regulation, ±1 Over-temperature

• Wide Input Voltage Range, 5V ±10 or 5.5V to 14V

• Wide Output Voltage Range, from 0.6V

• Simple Single-Loop Voltage-Mode PWM Control Design

• Input Voltage Feed-Forward for Constant Modulator Gain

• Fast PWM Converter Transient Response

• Lossless rDS(ON) High Side and Low Side Overcurrent Protections

• Undervoltage Detection

• Integrated Thermal Shutdown Protection

• Power-Good Indication

• Adjustable Soft-Start

• Start-Up with Pre-Bias Output

• Pb-free (RoHS Compliant)

Applications

• Point of Load Applications

• Graphics Cards - GPU and Memory Supplies

• ASIC Power Supplies

• Embedded Processor and I/O Supplies

• DSP Supplies