General Description

The MAX1710/MAX1711 step-down controllers are intended for core CPU DC-DC converters in notebook

computers. They feature a triple-threat combination of ultra-fast transient response, high DC accuracy, and

high efficiency needed for leading-edge CPU core power supplies. Maxim’s proprietary Quick-PWM™ quick-response, constant-on-time PWM control scheme handles wide input/output voltage ratios with ease and

provides 100ns “instant-on” response to load transients while maintaining a relatively constant switching frequency.

Features

♦ Ultra-High Efficiency

♦ No Current-Sense Resistor (Lossless ILIMIT)

♦ Quick-PWM with 100ns Load-Step Response

♦ ±1 VOUTAccuracy over Line and Load

♦ 4-Bit On-Board DAC (MAX1710)

♦ 5-Bit On-Board DAC (MAX1711/MAX1712)

♦ 0.925V to 2V Output Adjust Range(MAX1711/MAX1712)

♦ 2V to 28V Battery Input Range

♦ 200/300/400/550kHz Switching Frequency

♦ Remote GND and VOUTSensing

♦ Over/Undervoltage Protection

♦ 1.7ms Digital Soft-Start

♦ Drive Large Synchronous-Rectifier FETs

♦ 2V ±1 Reference Output

♦ Power-Good Indicator

♦ Small 24-Pin QSOP Package

Applications

Notebook Computers

Docking Stations

CPU Core DC-DC Converters

Single-Stage (BATT to VCORE)Converters

Two-Stage (+5V to VCORE) Converters